Conserved Protein Domain Family
HdeA

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pfam06411: HdeA 
HdeA/HdeB family
HdeA (hns-dependent expression protein A) is a single domain alpha-helical protein localized in the periplasmic space. HdeA is involved in acid resistance essential for infectivity of enteric bacterial pathogens. Functional studies demonstrate that HdeA is activated by a dimer-to-monomer transition at acidic pH, leading to suppression of aggregation by acid-denatured proteins. The gene encoding HdeA was initially identified as part of an operon regulated by the nucleoid protein H-NS. This family also contains HdeB.
Statistics
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PSSM-Id: 428923
Aligned: 21 rows
Threshold Bit Score: -1
Created: 20-Apr-2021
Updated: 29-Sep-2021
Structure
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Aligned Rows:
PubMed ReferencesClick to see Conserved Features Help

Sequence Alignment
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Format: Row Display: Color Bits: Type Selection:
jgi:Aave_0086       13 SSLAAAAAMaqtpspaaPSAAATNPAAatapAAKARkplvKTTCSDYV----GMDETVKPKFIYYAVGHTQ-GGKKEAVF 87  Acidovora...
WP_004236529         7 TACLVAASA--------FSSVALAEPAd---IQVPD----KMTCKEFV----NLNPQSWAPVALWVISKDTqYPGGDFVA 67  Morganella
P0AET2              14 GAVAALSLV--------NAQSALAANEsa----------kDMTCQEFI----DLNPKAMTPVAWWMLHEETvYKGGDTVT 71  Escherich...
Q7CQI8               9 agIIVAALV--------TSVSVNAATDttktNVTPK----GMSCQEFV----DLNPQTMAPVAFWVLNEDEdFKGGDYVD 72  Salmonell...
jgi:Bind_1699        2 rKLALFAAAm-------MTISAIPAKA------QVMidmsLVTCKQFL----DSDAERAAILASWMGGYFS-ASKNLSTV 63  Beijerinc...
Q89I73               7 TMLSILFAAa-------LSLSSMPAHA-------VKwdlsTMTCRQFL----ESGEDNIAVVLTWMDGWYK-GDEDNAII 67  Bradyrhiz...
gigasnome:DGI_2961   8 AMIAASLVAl-------CASPAMAKKQ----GI-QDidfsQITCGDFVadlqTASAEDVGVIFMWLDGYLS-GVSGDTTL 74  Desulfovi...
WP_015225356        11 ASMTMGILS--------IGVEAIAQPEn---EPVSPinleAITCRDLL----LMDGEEEENTILFMHGYMS-GEREETMI 74  Halothece...
jgi:PCC8801_0830    11 LVLTTVISGv-------GTSSSQAQEN----SGEMTvnlmEVTCRELF----KASAEDKDLILVFYHGLVT-AKKNQMVI 74  Rippkaea ...
jgi:PCC7424_2053     9 LALTLCFAEs-------VVLRSYAQDNaipnSAASSvdfsKIDCETLL----KMDGDERDYTIIFFQGFMS-GRRNTMIV 76  Gloeothec...
WP_004236529         7 TACLVAASA--------FSSVALAEPAd---IQVPD----KMTCKEFV----NLNPQSWAPVALWVISKDTqYPGGDFVA 67  Morganella
P0AET2              14 GAVAALSLV--------NAQSALAANEsa----------kDMTCQEFI----DLNPKAMTPVAWWMLHEETvYKGGDTVT 71  Escherich...
Q7CQI8               9 agIIVAALV--------TSVSVNAATDttktNVTPK----GMSCQEFV----DLNPQTMAPVAFWVLNEDEdFKGGDYVD 72  Salmonell...
jgi:Bind_1699        2 rKLALFAAAm-------MTISAIPAKA------QVMidmsLVTCKQFL----DSDAERAAILASWMGGYFS-ASKNLSTV 63  Beijerinc...
Q89I73               7 TMLSILFAAa-------LSLSSMPAHA-------VKwdlsTMTCRQFL----ESGEDNIAVVLTWMDGWYK-GDEDNAII 67  Bradyrhiz...
gigasnome:DGI_2961   8 AMIAASLVAl-------CASPAMAKKQ----GI-QDidfsQITCGDFVadlqTASAEDVGVIFMWLDGYLS-GVSGDTTL 74  Desulfovi...
WP_015225356        11 ASMTMGILS--------IGVEAIAQPEn---EPVSPinleAITCRDLL----LMDGEEEENTILFMHGYMS-GEREETMI 74  Halothece...
jgi:PCC8801_0830    11 LVLTTVISGv-------GTSSSQAQEN----SGEMTvnlmEVTCRELF----KASAEDKDLILVFYHGLVT-AKKNQMVI 74  Rippkaea ...
jgi:PCC7424_2053     9 LALTLCFAEs-------VVLRSYAQDNaipnSAASSvdfsKIDCETLL----KMDGDERDYTIIFFQGFMS-GRRNTMIV 76  Gloeothec...
jgi:Aave_0086       88 EEDAIEKIKPELDQYCSVHLTKSAYA 113 Acidovorax citrulli AAC00-1
WP_004236529        68 LSEKGVAEAPKIVEFCKKFPEGTLQD 93  Morganella
P0AET2              72 LNETDLTQIPKVIEYCKKNPQKNLYT 97  Escherichia coli K-12
Q7CQI8              73 FQETETTAVPLAVELCKKNPQSELSK 98  Salmonella enterica subsp. enterica serovar Typhimurium
jgi:Bind_1699       64 DLRYVERNTKKVINYCEANKSKTLMS 89  Beijerinckia indica subsp. indica ATCC 9039
Q89I73              68 DTEVFIENAKKFGAYCGKNPTVSVVt 93  Bradyrhizobium japonicum
gigasnome:DGI_2961  75 RWDGMQDFGTNLVDLCKKKPRMKVLD 100 Desulfovibrio gigas DSM 1382 = ATCC 19364
WP_015225356        75 DIGKLIAVTDQVKNTCIDEPSNELMQ 100 Halothece sp. PCC 7418
jgi:PCC8801_0830    75 DRTQLEQATDKITDYCIDNPKATLMT 100 Rippkaea orientalis PCC 8801
jgi:PCC7424_2053    77 DELAFARATDEVIDYCVDNPNDRVIs 102 Gloeothece citriformis PCC 7424
WP_004236529        68 LSEKGVAEAPKIVEFCKKFPEGTLQD 93  Morganella
P0AET2              72 LNETDLTQIPKVIEYCKKNPQKNLYT 97  Escherichia coli K-12
Q7CQI8              73 FQETETTAVPLAVELCKKNPQSELSK 98  Salmonella enterica subsp. enterica serovar Typhimurium
jgi:Bind_1699       64 DLRYVERNTKKVINYCEANKSKTLMS 89  Beijerinckia indica subsp. indica ATCC 9039
Q89I73              68 DTEVFIENAKKFGAYCGKNPTVSVVt 93  Bradyrhizobium japonicum
gigasnome:DGI_2961  75 RWDGMQDFGTNLVDLCKKKPRMKVLD 100 Desulfovibrio gigas DSM 1382 = ATCC 19364
WP_015225356        75 DIGKLIAVTDQVKNTCIDEPSNELMQ 100 Halothece sp. PCC 7418
jgi:PCC8801_0830    75 DRTQLEQATDKITDYCIDNPKATLMT 100 Rippkaea orientalis PCC 8801
jgi:PCC7424_2053    77 DELAFARATDEVIDYCVDNPNDRVIs 102 Gloeothece citriformis PCC 7424
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