calponin homology (CH) domain found in EH domain-binding protein 1 and similar proteins; EHBP1 is a regulator of endocytic recycling and may play a role in actin reorganization by linking clathrin-mediated endocytosis to the actin cytoskeleton. It may act as an effector of small GTPases, including RAB-10 (Rab10), and play a role in vesicle trafficking. EHBP1 is associated with aggressive prostate cancer and insulin-stimulated trafficking and cell migration. Members of this subfamily contain a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  419 NASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFASIGISRLLEPS 498
Cdd:cd21254     1 NASQSLLAWCKEVTKGYRGVKITNFTTSWRNGLAFCAILHHFRPDLIDYKSLNPHDIKENNKKAYDGFASLGISRLLEPS 80

                          90       100
                  ....*....|....*....|....*..
gi 755536336  499 DMVLLAIPDKLTVMTYLYQIRAHFSGQ 525
Cdd:cd21254    81 DMVLLAVPDKLTVMTYLYQIRAHFSGQ 107

N-terminal C2 in EEIG1 and EHBP1 proteins; This version of the C2 domain was initally identified in the vertebrate estrogen early-induced gene 1 (EEIG1), and its Drosophila ortholog required for uptake of dsRNA via the endocytotic machinery to induce RNAi silencing. It is also in C.elegans ortholog Sym-3 (SYnthetic lethal with Mec-3) and the mammalian protein EHBP1 (EH domain Binding Protein-1) that regulates endocytotic recycling and two plant proteins, RPG that regulates Rhizobium-directed polar growth and PMI1 (Plastid Movement Impaired 1) that is essential for intracellular movement of chloroplasts in response to blue light.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336    12 GKHASKFQFVASYQELMVECTkkwQPDKLVVVWtrrsRRKSSKAHSWQPGIKNPYRGVVVWPvpENIEITVTLFKDPHAE 91
Cdd:pfam10358    1 KKRKPKFQFVLTIHELQNLPL---VGGELFVKW----RRGDKKGSSGTTEKALVNNGRAIFN--EEFSIPVTLFLDKKGG 71

                           90       100       110       120       130       140       150
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 755536336    92 EFEDKEWTFVIENESPSGRRKALATSSINMKQYASPMPTQTDVKLKFKplSKKVVSATLQFSLSCIFLREGKAT 165
Cdd:pfam10358   72 KYEEKLLEFSVYKVTKKGKKKVLGKASIDLAEYANLKKKPTTVRFLLK--KSSKKNATLSLSIQVLPLGEDPND 143

calponin homology (CH) domain found in EH domain-binding protein 1 and similar proteins; EHBP1 is a regulator of endocytic recycling and may play a role in actin reorganization by linking clathrin-mediated endocytosis to the actin cytoskeleton. It may act as an effector of small GTPases, including RAB-10 (Rab10), and play a role in vesicle trafficking. EHBP1 is associated with aggressive prostate cancer and insulin-stimulated trafficking and cell migration. Members of this subfamily contain a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  419 NASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFASIGISRLLEPS 498
Cdd:cd21254     1 NASQSLLAWCKEVTKGYRGVKITNFTTSWRNGLAFCAILHHFRPDLIDYKSLNPHDIKENNKKAYDGFASLGISRLLEPS 80

                          90       100
                  ....*....|....*....|....*..
gi 755536336  499 DMVLLAIPDKLTVMTYLYQIRAHFSGQ 525
Cdd:cd21254    81 DMVLLAVPDKLTVMTYLYQIRAHFSGQ 107

N-terminal C2 in EEIG1 and EHBP1 proteins; This version of the C2 domain was initally identified in the vertebrate estrogen early-induced gene 1 (EEIG1), and its Drosophila ortholog required for uptake of dsRNA via the endocytotic machinery to induce RNAi silencing. It is also in C.elegans ortholog Sym-3 (SYnthetic lethal with Mec-3) and the mammalian protein EHBP1 (EH domain Binding Protein-1) that regulates endocytotic recycling and two plant proteins, RPG that regulates Rhizobium-directed polar growth and PMI1 (Plastid Movement Impaired 1) that is essential for intracellular movement of chloroplasts in response to blue light.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336    12 GKHASKFQFVASYQELMVECTkkwQPDKLVVVWtrrsRRKSSKAHSWQPGIKNPYRGVVVWPvpENIEITVTLFKDPHAE 91
Cdd:pfam10358    1 KKRKPKFQFVLTIHELQNLPL---VGGELFVKW----RRGDKKGSSGTTEKALVNNGRAIFN--EEFSIPVTLFLDKKGG 71

                           90       100       110       120       130       140       150
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 755536336    92 EFEDKEWTFVIENESPSGRRKALATSSINMKQYASPMPTQTDVKLKFKplSKKVVSATLQFSLSCIFLREGKAT 165
Cdd:pfam10358   72 KYEEKLLEFSVYKVTKKGKKKVLGKASIDLAEYANLKKKPTTVRFLLK--KSSKKNATLSLSIQVLPLGEDPND 143

Calponin homology domain; Actin binding domains present in duplicate at the N-termini of spectrin-like proteins (including dystrophin, alpha-actinin). These domains cross-link actin filaments into bundles and networks. A calponin homology domain is predicted in yeasst Cdc24p.

                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336    424 LLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQ----DIKENNKKAYDGFASIGISR-LLEPS 498
Cdd:smart00033    3 LLRWVNSLLAEYDKPPVTNFSSDLKDGVALCALLNSLSPGLVDKKKVAASlsrfKKIENINLALSFAEKLGGKVvLFEPE 82

                            90       100
                    ....*....|....*....|
gi 755536336    499 DMVLLAiPDKLTVMTYLYQI 518
Cdd:smart00033   83 DLVEGP-KLILGVIWTLISL 101

Uncharacterized N-terminal coiled-coil domain of peptidoglycan hydrolase CwlO [Function unknown];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336 1024 QRSIQEDTKRGTEEKAEITETQRK----PSEDEVLNKGFKDTSQyvvgELAALENE----QKQIDTRAALVEKRLRYLMD 1095
Cdd:COG3883    22 QKELSELQAELEAAQAELDALQAEleelNEEYNELQAELEALQA----EIDKLQAEiaeaEAEIEERREELGERARALYR 97

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336 1096 TGRNTeeeeammQEWFMLVNKKN--ALIRRMNQLS-LLEKEHDLERRYELLNRELRAMLAIEDWQKTEAQKRREQL--LL 1170
Cdd:COG3883    98 SGGSV-------SYLDVLLGSESfsDFLDRLSALSkIADADADLLEELKADKAELEAKKAELEAKLAELEALKAELeaAK 170

                         170       180       190       200
                  ....*....|....*....|....*....|....*....|....*...
gi 755536336 1171 DELVALVDKRDALVRDLDAQEKQAEEEDEHLERTLEQNKGKMAKKEEK 1218
Cdd:COG3883   171 AELEAQQAEQEALLAQLSAEEAAAEAQLAELEAELAAAEAAAAAAAAA 218

calponin homology (CH) domain found in EH domain-binding protein 1 and similar proteins; EHBP1 is a regulator of endocytic recycling and may play a role in actin reorganization by linking clathrin-mediated endocytosis to the actin cytoskeleton. It may act as an effector of small GTPases, including RAB-10 (Rab10), and play a role in vesicle trafficking. EHBP1 is associated with aggressive prostate cancer and insulin-stimulated trafficking and cell migration. Members of this subfamily contain a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  419 NASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFASIGISRLLEPS 498
Cdd:cd21254     1 NASQSLLAWCKEVTKGYRGVKITNFTTSWRNGLAFCAILHHFRPDLIDYKSLNPHDIKENNKKAYDGFASLGISRLLEPS 80

                          90       100
                  ....*....|....*....|....*..
gi 755536336  499 DMVLLAIPDKLTVMTYLYQIRAHFSGQ 525
Cdd:cd21254    81 DMVLLAVPDKLTVMTYLYQIRAHFSGQ 107

calponin homology (CH) domain found in EH domain-binding protein 1-like protein 1 and similar proteins; EHBP1L1 may act as Rab effector protein and play a role in vesicle trafficking. It coordinates Rab8 and Bin1 to regulate apical-directed transport in polarized epithelial cells. Members of this subfamily contain a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  420 ASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFASIGISRLLEPSD 499
Cdd:cd21255     2 SSQSLLEWCQEVTAGYRGVRVTNFTTSWRNGLAFCAILHHFHPDLVDYESLDPLDIKENNKKAFEAFASLGVPRLLEPAD 81

                          90       100
                  ....*....|....*....|....
gi 755536336  500 MVLLAIPDKLTVMTYLYQIRAHFS 523
Cdd:cd21255    82 MVLLPIPDKLIVMTYLCQLRAHFT 105

Bivalent Mical/EHBP Rab binding domain; A variety of different effector proteins interact specifically with GTP-bound Rab proteins and mediate their versatile roles in membrane trafficking, including budding of vesicles from a donor membrane, directed transport through the cell and finally tethering and fusion with a target membrane. The 'bivalent Mical/EHBP Rab binding' (bMERB) domain is a Rab effector domain that is present in proteins of the Mical and EHBP families, both known to act in endosomal trafficking. The bMERB domain displays a preference for Rab8 family proteins (Rab8, 10, 13 and 15) and at least some of the bMERB domains contain two separate binding sites for Rab-proteins, allowing Micals and EHBPs to bind two Rabs simultaneously. The strong similarity between the two binding sites within one bMRB domain strongly suggests an evolutionarily development via duplication of a common ancestor supersecondary structure element. The bMERB domain has a completely alpha-helical fold consisting of a central helix and N- and C-terminal helices folding back on this central helix.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  1068 ELAALENEQKQIDTRAALVEKRLRYLMDtgrNTEEEEAMMQEWFMLVNKKNALIRRMNQLSLLEKEHDLERRYELLNREL 1147
Cdd:pfam12130    1 ELEEIEERQRELEERGVELEKALRGEMS---GDEEEEQLLQEWFKLVNEKNALVRRESELMYLAKEQDLEERQARLEQEL 77

                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....
gi 755536336  1148 RAMLAIEDWQKTEAQKRREQLLLDELVALVDKRDALVRDLDAQEKQAEEEDEHL 1201
Cdd:pfam12130   78 RELMSKPDWLKTEEDKQREEELLEELVEIVEQRDALVDSLEEDRLREEEEDEEL 131

calponin homology (CH) domain found in the MICAL-like protein family; The MICAL-L family includes MICAL-L1 and MICAL-L2. MICAL-L1, also called molecule interacting with Rab13 (MIRab13), is a probable lipid-binding protein with higher affinity for phosphatidic acid, a lipid enriched in recycling endosome membranes. It is a tubular endosomal membrane hub that connects Rab35 and Arf6 with Rab8a. It may be involved in a late step of receptor-mediated endocytosis regulating endocytosed-EGF receptor trafficking. Alternatively, it may regulate slow endocytic recycling of endocytosed proteins back to the plasma membrane. MICAL-L1 may indirectly play a role in neurite outgrowth. MICAL-L2, also called junctional Rab13-binding protein (JRAB), or molecule interacting with CasL-like 2, acts as an effector of small Rab GTPases which is involved in junctional complexes assembly through the regulation of cell adhesion molecule transport to the plasma membrane, and actin cytoskeleton reorganization. It regulates the endocytic recycling of occludins, claudins, and E-cadherin to the plasma membrane and may thereby regulate the establishment of tight junctions and adherens junctions. Members of this family contain a single copy of CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  422 QSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYD-GFASIGISRLLEPSDM 500
Cdd:cd21197     3 QALLRWCRRQCEGYPGVNITNLTSSFRDGLAFCAILHRHRPELIDFHSLKKDNWLENNRLAFRvAETSLGIPALLDAEDM 82

                          90       100
                  ....*....|....*....|..
gi 755536336  501 VLLAIPDKLTVMTYLYQIRAHF 522
Cdd:cd21197    83 VTMHVPDRLSIITYVSQYYNHF 104

calponin homology (CH) domain found in MICAL-like protein 1; MICAL-like protein 1 (MICAL-L1), also called molecule interacting with Rab13 (MIRab13), is a probable lipid-binding protein with higher affinity for phosphatidic acid, a lipid enriched in recycling endosome membranes. It is a tubular endosomal membrane hub that connects Rab35 and Arf6 with Rab8a. It may be involved in a late step of receptor-mediated endocytosis regulating endocytosed-EGF receptor trafficking. Alternatively, it may regulate slow endocytic recycling of endocytosed proteins back to the plasma membrane. MICAL-L1 may indirectly play a role in neurite outgrowth. It contains a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  420 ASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYD-GFASIGISRLLEPS 498
Cdd:cd21252     1 ARRALQAWCRRQCEGYPGVEIRDLSSSFRDGLAFCAILHRHRPDLIDFDSLSKDNVYENNRLAFEvAERELGIPALLDPE 80

                          90       100
                  ....*....|....*....|....*..
gi 755536336  499 DMVLLAIPDKLTVMTYLYQIRAHFSGQ 525
Cdd:cd21252    81 DMVSMKVPDCLSIMTYVSQYYNHFSNP 107

second calponin homology (CH) domain found in the alpha-actinin family; The alpha-actinin (ACTN) family includes alpha-actinin-1, -2, -3, and -4. They are F-actin cross-linking proteins which are thought to anchor actin to a variety of intracellular structures. ACTN1 mutations cause congenital macrothrombocytopenia. ACTN2 mutations are associated with cardiomyopathies, as well as skeletal muscle disorder. ACTN3 is critical in anchoring the myofibrillar actin filaments and plays a key role in muscle contraction. ACTN4 is associated with cell motility and cancer invasion. It is probably involved in vesicular trafficking via its association with the CART complex, which is necessary for efficient transferrin receptor recycling but not for epidermal growth factor receptor (EGFR) degradation. Members of this family contain two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  419 NASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYD-GFASIGISRLLEP 497
Cdd:cd21216    10 SAKEGLLLWCQRKTAPYKNVNVQNFHTSWKDGLAFCALIHRHRPDLLDYDKLRKDDPRENLNLAFDvAEKHLDIPKMLDA 89

                          90       100
                  ....*....|....*....|....*.
gi 755536336  498 SDMVLLAIPDKLTVMTYLYQIRAHFS 523
Cdd:cd21216    90 EDIVNTPRPDERSVMTYVSCYYHAFA 115

calponin homology (CH) domain found in molecule interacting with CasL protein 2 (MICAL-2), MICAL-3, and similar proteins; Molecule interacting with CasL protein (MICAL) is a large, multidomain, cytosolic protein with a single LIM domain, a calponin homology (CH) domain and a flavoprotein monooxygenase (MO) domain. In Drosophila, MICAL is expressed in axons, interacts with the neuronal A (PlexA) receptor and is required for Semaphorin 1a (Sema-1a)-PlexA-mediated repulsive axon guidance. The LIM and CH domains mediate interactions with the cytoskeleton, cytoskeletal adaptor proteins, and other signaling proteins. The flavoprotein MO is required for semaphorin-plexin repulsive axon guidance during axonal pathfinding in the Drosophila neuromuscular system. In addition, MICAL functions to interact with Rab13 and Rab8 to coordinate the assembly of tight junctions and adherens junctions in epithelial cells. Thus, MICAL is also called junctional Rab13-binding protein (JRAB). Members of this family, which includes MICAL-2, MICAL-3, and similar proteins, contain one CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  421 SQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYD-GFASIGISRLLEPSD 499
Cdd:cd21195     6 PSKLLTWCQQQTEGYQHVNVTDLTTSWRSGLALCAIIHRFRPELINFDSLNEDDAVENNQLAFDvAEREFGIPPVTTGKE 85

                          90       100
                  ....*....|....*....|....*
gi 755536336  500 MVLLAIPDKLTVMTYLYQIRAHFSG 524
Cdd:cd21195    86 MASAQEPDKLSMVMYLSKFYELFRG 110

second calponin homology (CH) domain found in the dystrophin family; The dystrophin family includes dystrophin and its paralog, utrophin. Dystrophin, encoded by the DMD gene, is a large, submembrane cytoskeletal protein that is the main component of the dystrophin-glycoprotein complex (DGC) in skeletal muscles. It links the transmembrane DGC to the actin cytoskeleton through binding strongly to the cytoplasmic tail of beta-dystroglycan, the transmembrane subunit of a highly O-glycosylated cell-surface protein. Dystrophin is also involved in maintaining the structural integrity of cells, as well as in the formation of the blood-brain barrier (BBB). Utrophin, also called dystrophin-related protein 1 (DRP-1), is an autosomal dystrophin homolog that increases dystrophic muscle function and reduces pathology. It is broadly expressed in both the mRNA and protein levels, and occurs in the cerebrovascular endothelium. Utrophin forms the utrophin-glycoprotein complex (UGC) by interacting with dystroglycans (DGs) and sarcoglycan-dystroglycans, as well as sarcoglycan and sarcospan (SG-SSPN) subcomplexes. It may act as a scaffolding protein that stabilizes lipid microdomains and clusters mechanosensitive channel subunits, and link the F-actin cytoskeleton to the cell membrane via the associated glycoprotein complex. Members of this family contain two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  422 QSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYD-GFASIGISRLLEPSDm 500
Cdd:cd21187     3 KTLLAWCRQSTRGYEQVDVKNFTTSWRDGLAFNALIHRHRPDLFDFDSLVKDSPESRLEHAFTvAHEHLGIEKLLDPED- 81

                          90
                  ....*....|....*
gi 755536336  501 VLLAIPDKLTVMTYL 515
Cdd:cd21187    82 VNVEQPDKKSILMYV 96

calponin homology (CH) domain found in molecule interacting with CasL protein 2; MICAL-2 is a nuclear [F-actin]-monooxygenase that promotes depolymerization of F-actin by mediating oxidation of specific methionine residues on actin to form methionine-sulfoxide, resulting in actin filament disassembly and preventing repolymerization. In the absence of actin, it also functions as a NADPH oxidase producing H(2)O(2). MICAL-2 acts as a key regulator of the serum response factor (SRF) signaling pathway elicited by nerve growth factor and serum. It mediates oxidation and subsequent depolymerization of nuclear actin, leading to the increased MKL1/MRTF-A presence in the nucleus, promoting SRF:MKL1/MRTF-A-dependent gene transcription. MICAL-2 contains a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  417 KPNasqSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYD-GFASIGISRLL 495
Cdd:cd21250     5 RPN---KLLTWCQKQTEGYQNVNVTDLTTSWKSGLALCAIIHRFRPELIDFDSLNEDDAVKNNQLAFDvAEREFGIPPVT 81

                          90       100
                  ....*....|....*....|....*....
gi 755536336  496 EPSDMVLLAIPDKLTVMTYLYQIRAHFSG 524
Cdd:cd21250    82 TGKEMASAEEPDKLSMVMYLSKFYELFRG 110

calponin homology (CH) domain found in the smoothelin family; The smoothelin family includes smoothelin and smoothelin-like proteins. Smoothelins are actin-binding cytoskeletal proteins that are abundantly expressed in healthy visceral (smoothelin-A) and vascular (smoothelin-B) smooth muscle. SMTNL1, also called calponin homology-associated smooth muscle protein (CHASM), plays a role in the regulation of contractile properties of both striated and smooth muscles. It can bind to calmodulin and tropomyosin. When it is unphosphorylated, SMTNL1 may inhibit myosin dephosphorylation. SMTNL2 is highly expressed in skeletal muscle and could be associated with differentiating myocytes. Members of this family contain a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  422 QSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFASIG-ISRLLEPSDM 500
Cdd:cd21200     4 QMLLEWCQAKTRGYEHVDITNFSSSWSDGMAFCALIHHFFPDAFDYSSLDPKNRRKNFELAFSTAEELAdIAPLLEVEDM 83

                          90       100
                  ....*....|....*....|....
gi 755536336  501 VLLAI-PDKLTVMTYLYQIRAHFS 523
Cdd:cd21200    84 VRMGNrPDWKCVFTYVQSLYRHLR 107

calponin homology (CH) domain found in cytospin-B; Cytospin-B, also called nuclear structure protein 5 (NSP5), or sperm antigen HCMOGT-1, or sperm antigen with calponin homology and coiled-coil domains 1 (SPECC1), is a novel fusion Cytospin-B that contains a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  415 GQKPNAsqsLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFASIGISRL 494
Cdd:cd21257     7 GSKRNA---LLKWCQKKTEGYPNIDITNFSSSWSDGLAFCALLHTYLPAHIPYQELSSQDKKRNLLLAFQAAESVGIKPS 83

                          90       100
                  ....*....|....*....|....*...
gi 755536336  495 LEPSDMVLLAIPDKLTVMTYLYQIRAHF 522
Cdd:cd21257    84 LELSEMMYTDRPDWQSVMQYVAQIYKYF 111

second calponin homology (CH) domain found in spectrin beta chain, non-erythrocytic 5 (SPTBN5) and similar proteins; Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. SPTBN5, also called beta-V spectrin, is a mammalian ortholog of Drosophila beta H spectrin that may play a crucial role as a longer actin-membrane cross-linker or to fulfill the need for greater extensible flexibility than can be provided by the other smaller conventional spectrins. SPTBN5 contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  419 NASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYD-GFASIGISRLLEP 497
Cdd:cd21249     4 SAKEALLIWCQRKTAGYTNVNVQDFSRSWRDGLAFNALIHAHRPDLIDYGSLRPDRPLYNLANAFLvAEQELGISQLLDP 83

                          90       100
                  ....*....|....*....|....*.
gi 755536336  498 SDmVLLAIPDKLTVMTYLYQIRAHFS 523
Cdd:cd21249    84 ED-VAVPHPDERSIMTYVSLYYHYFS 108

calponin homology (CH) domain found in smoothelin-like protein 1; Smoothelin-like protein 1 (SMTNL1), also called calponin homology-associated smooth muscle protein (CHASM), plays a role in the regulation of contractile properties of both striated and smooth muscles. It can bind to calmodulin and tropomyosin. When it is unphosphorylated, SMTNL1 may inhibit myosin dephosphorylation. SMTNL1 contains a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  424 LLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFASIG-ISRLLEPSDMVL 502
Cdd:cd21260     6 LLEWCRAKTRGYEHVDIQNFSSSWSSGMAFCALIHKFFPDAFDYAELDPANRRHNFTLAFSTAEKHAdCAPLLEVEDMVR 85

                          90
                  ....*....|....*.
gi 755536336  503 LAIPDKLTVMTYLYQI 518
Cdd:cd21260    86 MSVPDSKCVYTYIQEL 101

calponin homology (CH) domain found in cytospin-A; Cytospin-A, also called renal carcinoma antigen NY-REN-22, or sperm antigen with calponin homology and coiled-coil domains 1-like, or SPECC1-like protein (SPECC1L), is involved in cytokinesis and spindle organization. It may play a role in actin cytoskeleton organization and microtubule stabilization and hence, is required for proper cell adhesion and migration. Cytospin-A contains a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  415 GQKPNAsqsLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFASIGISRL 494
Cdd:cd21256    13 GSKRNA---LLKWCQKKTEGYQNIDITNFSSSWNDGLAFCALLHTYLPAHIPYQELNSQDKRRNFTLAFQAAESVGIKST 89

                          90       100
                  ....*....|....*....|....*...
gi 755536336  495 LEPSDMVLLAIPDKLTVMTYLYQIRAHF 522
Cdd:cd21256    90 LDINEMVRTERPDWQSVMTYVTAIYKYF 117

second calponin homology (CH) domain found in dystonin and similar proteins; Dystonin, also called 230 kDa bullous pemphigoid antigen, 230/240 kDa bullous pemphigoid antigen, bullous pemphigoid antigen 1 (BPA or BPAG1), dystonia musculorum protein, or hemidesmosomal plaque protein, is a cytoskeletal linker protein that acts as an integrator of intermediate filaments, actin, and microtubule cytoskeleton networks. It is required for anchoring either intermediate filaments to the actin cytoskeleton in neural and muscle cells, or keratin-containing intermediate filaments to hemidesmosomes in epithelial cells. Dystonin contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  419 NASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFASIGISRLLEPS 498
Cdd:cd21239     1 SAKERLLLWSQQMTEGYTGIRCENFTTCWRDGRLFNAIIHKYRPDLIDMNTVAVQSNLANLEHAFYVAEKLGVTRLLDPE 80

                          90
                  ....*....|....*..
gi 755536336  499 DmVLLAIPDKLTVMTYL 515
Cdd:cd21239    81 D-VDVSSPDEKSVITYV 96

calponin homology (CH) domain found in smoothelin-like protein 2; Smoothelin-like protein 2 (SMTNL2) is highly expressed in skeletal muscle and could be associated with differentiating myocytes. It contains a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  422 QSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFASI-GISRLLEPSDM 500
Cdd:cd21261     4 QILLEWCRSKTIGYKNIDLQNFSSSWSDGMAFCALVHSFFPEAFDYDSLSPSNRKHNFELAFSMAEKLaNCDRLIEVEDM 83

                          90       100
                  ....*....|....*....|...
gi 755536336  501 VLLA-IPDKLTVMTYLYQIRAHF 522
Cdd:cd21261    84 MVMGrKPDPMCVFTYVQSLYNHL 106

second calponin homology (CH) domain found in microtubule-actin cross-linking factor 1, isoforms 1/2/3/5 (MACF1) and similar proteins; MACF1, also called 620 kDa actin-binding protein (ABP620), actin cross-linking family protein 7 (ACF7), macrophin-1, or trabeculin-alpha, is a large protein containing numerous spectrin and leucine-rich repeat (LRR) domains. It facilitates actin-microtubule interactions at the cell periphery and couples the microtubule network to cellular junctions. MACF1 contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  419 NASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFASIGISRLLEPS 498
Cdd:cd21240     4 SAKEKLLLWTQKVTAGYTGIKCTNFSSCWSDGKMFNALIHRYRPDLVDMERVQIQSNRENLEQAFEVAERLGVTRLLDAE 83

                          90       100
                  ....*....|....*....|....
gi 755536336  499 DmVLLAIPDKLTVMTYLYQIRAHF 522
Cdd:cd21240    84 D-VDVPSPDEKSVITYVSSIYDAF 106

second calponin homology (CH) domain found in spectrin beta chain, non-erythrocytic 4 (SPTBN4) and similar proteins; Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. SPTBN4, also called beta-IV spectrin, or spectrin, non-erythroid beta chain 3 (SPTBN3), is a novel spectrin isolated as an interactor of the receptor tyrosine phosphatase-like protein ICA512. Its mutation associates with congenital myopathy, neuropathy, and central deafness. SPTBN4 contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  419 NASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYD-GFASIGISRLLEP 497
Cdd:cd21322    17 SAKDALLLWCQMKTAGYPEVNIQNFTTSWRDGLAFNALIHRHRPDLIDFSKLTKSNATYNLQQAFNtAEQHLGLTKLLDP 96

                          90       100
                  ....*....|....*....|....*.
gi 755536336  498 SDmVLLAIPDKLTVMTYLYQIRAHFS 523
Cdd:cd21322    97 ED-VNMEAPDEKSIITYVVSFYHYFS 121

second calponin homology (CH) domain found in synaptic nuclear envelope protein 1 (SYNE-1) and similar proteins; SYNE-1, also called nesprin-1, enaptin, KASH domain-containing protein 1 (KASH1), myocyte nuclear envelope protein 1 (MYNE-1), or nuclear envelope spectrin repeat protein 1, is a multi-isomeric modular protein which forms a linking network between organelles and the actin cytoskeleton to maintain subcellular spatial organization. SYNE-1 also acts as a component of the LINC (LInker of Nucleoskeleton and Cytoskeleton) complex, which is involved in the connection between the nuclear lamina and the cytoskeleton. SYNE-1 contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  417 KPNASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYD-GFASIGISRLL 495
Cdd:cd21243     3 KGGAKKALLKWVQNAAAKRFGIEVKDFGPSWRDGVAFNAIIHSIRPDLVDMESLKRRSNRENLETAFTvAEKELGIPRLL 82

                          90       100
                  ....*....|....*....|....*..
gi 755536336  496 EPSDmVLLAIPDKLTVMTYLYQIRAHF 522
Cdd:cd21243    83 DPED-VDVDKPDEKSIMTYVAQFLKKY 108

second calponin homology (CH) domain found in alpha-actinin-2; Alpha-actinin-2 (ACTN2), also called alpha-actinin skeletal muscle isoform 2, is an F-actin cross-linking protein which is thought to anchor actin to a variety of intracellular structures. ACTN2 is a bundling protein. Its mutations are associated with cardiomyopathies, as well as skeletal muscle disorder. It contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  416 QKPNASQSLLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYD-GFASIGISRL 494
Cdd:cd21288     7 EETSAKEGLLLWCQRKTAPYRNVNIQNFHTSWKDGLGLCALIHRHRPDLIDYSKLNKDDPIGNINLAMEiAEKHLDIPKM 86

                          90       100       110
                  ....*....|....*....|....*....|..
gi 755536336  495 LEPSDMVLLAIPDKLTVMTYLYQIRAHFSGQE 526
Cdd:cd21288    87 LDAEDIVNTPKPDERAIMTYVSCFYHAFAGAE 118

second calponin homology (CH) domain found in the filamin family; The filamin family includes filamin-A (FLN-A), filamin-B (FLN-B) and filamin-C (FLN-C). Filamins function to anchor various transmembrane proteins to the actin cytoskeleton. FLN-A is also called actin-binding protein 280 (ABP-280), alpha-filamin, endothelial actin-binding protein, filamin-1, or non-muscle filamin. It promotes orthogonal branching of actin filaments and links actin filaments to membrane glycoproteins. It also serves as a scaffold for a wide range of cytoplasmic signaling proteins. FLN-B is also called ABP-278, ABP-280 homolog, actin-binding-like protein, beta-filamin, filamin homolog 1 (Fh1), filamin-3, thyroid autoantigen, truncated actin-binding protein, or truncated ABP. It connects cell membrane constituents to the actin cytoskeleton and may also promote orthogonal branching of actin filaments as well as link actin filaments to membrane glycoproteins. FLN-C, also called FLNc, ABP-280-like protein, ABP-L, actin-binding-like protein, filamin-2, or gamma-filamin, is a muscle-specific filamin that plays a central role in muscle cells, probably by functioning as a large actin-cross-linking protein. It may be involved in reorganizing the actin cytoskeleton in response to signaling events, and may also display structural functions at the Z lines in muscle cells. FLN-C is critical for normal myogenesis and for maintaining the structural integrity of the muscle fibers. This family also includes Drosophila melanogaster protein jitterbug (Jbug), which is an actin-meshwork organizing protein containing three copies of the CH domain. Other members of this family contain two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  420 ASQSLLAWCREVTKNYrgvKITNFTTSWRNGLSFCAILHHFRPDLI-DYKSLNPQDIKENNKK----AYDGFasiGISRL 494
Cdd:cd21184     2 GKSLLLEWVNSKIPEY---KVKNFTTDWNDGKALAALVDALKPGLIpDNESLDKENPLENATKamdiAEEEL---GIPKI 75

                          90       100
                  ....*....|....*....|....*
gi 755536336  495 LEPSDMVLLAiPDKLTVMTYLYQIR 519
Cdd:cd21184    76 ITPEDMVSPN-VDELSVMTYLSYFR 99

second calponin homology (CH) domain found in dystrophin and similar proteins; Dystrophin, encoded by the DMD gene, is a large, submembrane cytoskeletal protein that is the main component of the dystrophin-glycoprotein complex (DGC) in skeletal muscles. It links the transmembrane DGC to the actin cytoskeleton through binding strongly to the cytoplasmic tail of beta-dystroglycan, the transmembrane subunit of a highly O-glycosylated cell-surface protein. It is involved in maintaining the structural integrity of cells, as well as in the formation of the blood-brain barrier (BBB). Mutations in dystrophin lead to Duchenne muscular dystrophy (DMD). Moreover, dystrophin deficiency is associated with abnormal cerebral diffusion and perfusion, as well as in acute Trypanosoma cruzi infection. The dystrophin subfamily has been characterized by a compact cluster of domains comprising four EF-hand-like motifs and a ZZ-domain, followed by a looser region with two coiled-coils. These domains are believed to be involved in protein-protein interactions. In addition, dystrophin contains two syntrophin binding sites (SBSs) and a long N-terminal extension that comprises two actin-binding calponin homology (CH) domains, approximately 24 spectrin repeats (SRs) and a WW domain. The model corresponds to the second CH domain.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 755536336  424 LLAWCREVTKNYRGVKITNFTTSWRNGLSFCAILHHFRPDLIDYKSLNPQDIKENNKKAYDGFA--SIGISRLLEPSDmV 501
Cdd:cd21233     5 LLSWVRQSTRNYPQVNVINFTSSWSDGLAFNALIHSHRPDLFDWNSVVSQQSATERLDHAFNIArqHLGIEKLLDPED-V 83

                          90       100
                  ....*....|....*....|...
gi 755536336  502 LLAIPDKLTVMTY---LYQIRAH 521
Cdd:cd21233    84 ATAHPDKKSILMYvtsLFQVLPQ 106