2A10,2A1B,3BN4,3DN9,3DNC


Conserved Protein Domain Family
BMC_CcmK
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cd07057: BMC_CcmK 
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Carbon dioxide concentrating mechanism (CcmK); Bacterial Micro-Compartment (BMC) domain
CcmK1-4 and CcmL proteins found in Synechocystis sp. strain PCC 6803 make up the beta carboxysome shell. These CcmK proteins have been shown to form hexameric units, while the CcmL proteins have been shown to form pentameric units. Together these proteins further assemble into the flat facets of the polyhedral carboxysome shell. The structures suggest that the central pores and the gaps between hexamers limit the transport of metabolites into and out of the the carboxysome.
Links
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Statistics
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PSSM-Id: 132897
Aligned: 18 rows
Threshold Bit Score: 106.61
Created: 15-Dec-2008
Updated: 2-Oct-2020
Structure
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Program:
Drawing:
Aligned Rows:
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Conserved site includes 17 residues -Click on image for an interactive view with Cn3D
Feature 1:Hexamer interface [polypeptide binding site]
Evidence:
  • Structure:2A10; Synechocystis sp. CcmK4 forms a hexamer; contacts defined at 3.5A.
    - View structure with Cn3D
  • Structure:2A1B; Synechocystis sp. CcmK2 forms a hexamer; contacts defined at 3.5A.
    - View structure with Cn3D
  • Comment:the interaction of a single chain shown in relationship to the hexamer is shown for clarity
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Sequence Alignment
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Format: Row Display: Color Bits: Type Selection: 
Feature 1          #  #        #  ##     #    #  ###                                ### # ##  
2A10_A      6 AVGSIETIGFPGILAAADAMVKAGrITIVGYIRAGSARFTLNIRGDVQEVKTAMAAGIDAInrtegADVKTWVIIPRPHE 85  Synechocystis sp.
NP_682386  14 AVGMVQVLGYPAALAVADTLVKAAqVTLVSCEGIGAGYWTVVIRGEVADVKAAVGAARSLSg----QAVISYQIIARPDG 89  Thermosynechococcu...
NP_925037 126 AIGLLETRGFPALVGASNTMLRAAeVHLIGYEKIGAGLCTVIIQGHVADVIYAIDAGMKEAer--iGELHAVMVIPRPLD 203 Gloeobacter violac...
Q5N2Q2      4 AVGTIQTLGFPPIIAAADAMVKAArVTITQYGLAESAQFFVSVRGPVSEVETAVEAGLKAVaetegAELINYIVIPNPQE 83  Synechococcus elon...
Q8YZY7      4 AVGVIETLGFPAVLAAADAMVKSAaVTIVYYGQAESARLLVAVRGHVAEVRRAVEAGIEAGeqaygGEVITHYIVPNPPE 83  Nostoc sp. PCC 7120
P46205     16 ALGVICTRSFPAVVGTADMMLKSAdVTLIGYEKTGSGFCTAIIRGGYADIKLALEAGVATArq--fEQYVSSTILPRPQG 93  Synechococcus elon...
P46205    120 AIGLIETNGFPALVGAADAMLKSAnVKLICYEKTGSGLCTAIVQGTVSNVTVAVEAGMYAAer--iGQLNAIMVIPRPLD 197 Synechococcus elon...
EDX77775    4 AVGTIETLGFPGVLAAADAMVKAGaVTLVKFDRNESGRFMVSVRGKISEVKVAVDAGLEAVekthgAEITGYYIIPNPHE 83  Microcoleus chthon...
EDX85268    4 AVVTIETHGFPASLAAADAMVKAGrVTLIKIAPADSGHQYVVVRGPNAEVEAALKAGLKAAnachgDGAYAHTLIPSPSQ 83  Synechococcus sp. ...
EDX87438   28 ALGMVSTTSFPAIIGIADAMIKSSnVFLVGYEKTGGGHCTAIVRGGVADIRMAVHAGERMAke--fGQFVSSSMIPRPPA 105 Synechococcus sp. ...

Feature 1     #       
2A10_A     86 NVVAVLPI 93  Synechocystis sp.
NP_682386  90 NLEQVLPI 97  Thermosynechococcus elongatus BP-1
NP_925037 204 ELEQSLPI 211 Gloeobacter violaceus PCC 7421
Q5N2Q2     84 NVETVMPI 91  Synechococcus elongatus PCC 6301
Q8YZY7     84 NVVDILPI 91  Nostoc sp. PCC 7120
P46205     94 NLEAVLPI 101 Synechococcus elongatus PCC 7942
P46205    198 DLMDSLPE 205 Synechococcus elongatus PCC 7942
EDX77775   84 NVDTVLPI 91  Microcoleus chthonoplastes PCC 7420
EDX85268   84 NVITTLEL 91  Synechococcus sp. PCC 7335
EDX87438  106 NLEAVLPL 113 Synechococcus sp. PCC 7335

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