Conserved Protein Domain Family
Cyt_bd_oxida_I

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pfam01654: Cyt_bd_oxida_I (This model is not part of the current CDD release)
Cytochrome bd terminal oxidase subunit I
This family are the alternative oxidases found in many bacteria which oxidise ubiquinol and reduce oxygen as part of the electron transport chain. This family is the subunit I of the oxidase E. coli has two copies of the oxidase, bo and bd', both of which are represented here In some nitrogen fixing bacteria, e.g. Klebsiella pneumoniae this oxidase is responsible for removing oxygen in microaerobic conditions, making the oxidase required for nitrogen fixation. This subunit binds a single b-haem, through ligands at His186 and Met393 (using Escherichia coli Cytochrome bd-I ubiquinol oxidase subunit 1 numbering). In addition His19 is a ligand for the haem b found in subunit II
Statistics
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PSSM-Id: 514411
Aligned: 449 rows
Threshold Bit Score: 178.781
Created: 13-Feb-2025
Updated: 28-Apr-2025
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:
Q5NI13         18 LARLQFGLTASFHFLFVPLTLGLTWILFTMELMYIRTGKEVYKDMVKFWGKLLGINFALGIITGLTMEFEFGTNWSYYSQ 97  Francisella tu...
EQB64374        7 fdRFLMGFTLASHILIVTMSIGFSILISIAEFLAIRWKDPYYEAMARRFTKAFVIFFAVGTASGTVLAVELFALWPSFMV 86 
EQB70920        7 fnRFLMGYTLGAHILIVTLSISLSVIVSAAEFIGLRRKDVYFESLSRRLAKALVIFFAVGTASGTVLAVELFALWPSFMV 86 
Q9HJH6          6 fdRLLFAYSIGSHILIVLMSIGLSVILPVLEYIAIKYKDAYYDILTRRVAKALVMFFAVGTASGAVMAVELIDLFPKFMT 85  Thermoplasma a...
WP_013486884    9 ySRILTALTLGFHVIFATIGVGIPLMIAIAEWMGIRRNDPHYTLMARRWARGFVITVAIGVVTGTAIGLQLTLLWPSFMQ 88  Evansella cell...
WP_012957283    9 ySRILTGLTLGYHVIFATIGVGIPLLIALAEWIGIKRNDEHYRLLARRWARGFVITVAIGVVTGTAIGLQLSLLWPNFMQ 88  Alkalihalophilus
Q8CUQ7          9 aSRLLTLLTLSFHIIYATIGVGVPLMIMIAQWIGIKKNDMHYLLMARRWAKGFIVTVAVGVVTGTAIGLQLSLLWPSFME 88  Oceanobacillus...
Q9K5W2          9 MSRLLTILTLSFHIFYATIGVGLPFMIIIFHWLGIKKNDLHYILMARRLAKGFVVTVAVGVVTGTAIGLQLALLWPNFMQ 88  Bacillus halod...
25_pfamImport   1 LSRMLTGITLFVHIVFASIGVGVPLMIALAEWRGLRTGDPHYTLLARRWARGFVITVAVGVVTGTSIGLQLSLLWPTFMR 80 
WP_014368396    9 ySRMLTELTLAFHIIFATIGVGVPVMIALAEWRGIRTGDPHYTLLARRWTRGFVITVAVGVVTGTAIGLQLSLLWPSFMR 88  Paenibacillus ...
Q5NI13         98 SVGDIFGTPLAIEGLAAFMLESTFAGLFFFGWDKL-TKKQHLLSTFCLAIGSSFSALLILVANGYMQHPVG--------- 167 Francisella tu...
EQB64374       87 VVGKVDILPFYYE-VFAFLLESISLVLYFYYWDFFkNRYKHWSLSVMVAVGTVMSAVFITLINAWMNTPTGfnipyylkt 165
EQB70920       87 FIGKVDILPFYYE-VFAFFLETISLVLYVYYWDAFrNRYKHWALSLFVAIGTVMSAVFITMINAFMNTPAGftlv----n 161
Q9HJH6         86 VIAVVGVLPFYYE-IFAFFLETIMLVSYYYYWDVFkNRMHHWLLTFGVAGGTLGSAVFITMINAWMNTPNGfnisyyeqt 164 Thermoplasma a...
WP_013486884   89 AAGHTIGLPMFMET-FAFFFEAIFLGIYLYTWDRFkSKWKHFLLVIPIVIGATASAFFITSVNSFMNVPQG--------- 158 Evansella cell...
WP_012957283   89 VAGHAISLPMFMET-FAFFFEAIFLGIYLYTWDRFkNKMYHFYLLIPVVIGASMSGFFITTVNAFMNAPTG--------- 158 Alkalihalophilus
Q8CUQ7         89 LAGNIIALPLFMEV-FAFFFEAIFLGIYLYTWDRFdNQKKHFLLLIPVAVGGGMSAYFITVVNSFMNSPAG--------- 158 Oceanobacillus...
Q9K5W2         89 LAGHIIALPLFMEV-FAFFFEAIFLGIYLYTWDRFdNQKKHLLLLIPVAVGGALSAFFITVVNAFMNSPSG--------- 158 Bacillus halod...
25_pfamImport  81 VAGQAIALPLFLET-FAFFIEAIFLGIYLYTWDRFkSKYFHLMLLIPVAIASSASAVFITTVNSFMNQPQG--------- 150
WP_014368396   89 IAGQAIALPLFLET-FAFFVEAIFLGIYLYTWDRFkKKTTHLLLMIPIVIGSSASAFFITTLNAFMNTPRG--------- 158 Paenibacillus ...
Q5NI13        168 ---SEFVaSTmRmetvSLLDLFLNHTAQTNFGHVMTAGYTTAAIFVIGISAFYLIRg--rDIA-FAKRSIAIGLGFGLIT 241 Francisella tu...
EQB64374      166 gilTDI----------NPIAAVLSPSGFYEDAHVVTATIAAGVFLIGTYLAYSFMKakteDGRiLYRKGLNLVAIVGLIS 235
EQB70920      162 gqpTNI----------NPLAAVMAPSGFVEISHVVTTTLAAGSFLLLAYLAFSYLKnhtqDSRiFYRKAMMLTSVVGFIA 231
Q9HJH6        165 gkiIDV----------NPFITAMTPSTGREIFHVAIVTAFSGLMVLGAFFAYQYIRsktfEEKnLWRKGLKVTFPMNMFL 234 Thermoplasma a...
WP_013486884  159 ---FNIV-DG-VltdvSPLAAMFNPATPTKIAHVIITCYLTSAFILGAIAAYHIIKgna---hvYHKKALHLTMVSAFVF 230 Evansella cell...
WP_012957283  159 ---VEIQ-NG-VvtniNPLAAMFNPATPTKVAHVLSSAYLTSAFVLAAIAAFALLKgkd---hvYHKKALHLTMTVAAVF 230 Alkalihalophilus
Q8CUQ7        159 ---FDIV-NG-ElvnaNPLAAMFTVSMPTKVAHVLSTGYMTIAFVLAAIAAFRLLQgsn---reYHKKSLNMLMKVGFVF 230 Oceanobacillus...
Q9K5W2        159 ---FELV-NG-EltnmNPLLAMLTVSMPTKVTHVLATAYMTVAFTLAAIAAFRLMKgse---tsYYKKSLNVSMKIGFIF 230 Bacillus halod...
25_pfamImport 151 ---FTLK-NG-VmtniHPIEAMLNPATPTKVSHVLASSYTLSAGVLMGLAAYSMLRgrn---hpYFKKALKLTATCTIVF 222
WP_014368396  159 ---FTLE-DG-ViknlQPLAAMFNPATPTKVSHVLASSYTTSAYILAAIAAYKLLKgsd---haYYKKALKLTVTAAFVF 230 Paenibacillus ...
Q5NI13        242 CIVAIIFGDANGVDAFRVQPLKMAAIEAEWd---TSKapAAFNAVALPSQKEQKNN----FD--VPIPAVLGLIATHST- 311 Francisella tu...
EQB64374      236 IALAGISGSVNASALITLQPLKYAAIELNLhsstSA----AETIGGI----YSSGK----ILyyLSIPHLQSLLAF--Pl 301
EQB70920      232 LLLAGITGDSNARMLISFQPLKYAAIELNLhptvNA----PEMIGGI----MINGH----LEyyITIPGLQSILAFl--- 296
Q9HJH6        235 IIMAGISGTLEMSGLLTYQPEKYAALDLDPypvaKD---APEHIFGT----IVEQNghyvIVggFKIPLLQSLLAG--Ng 305 Thermoplasma a...
WP_013486884  231 AIGTALIGDLSGKYLHEYQPEKLAAAEWHFe---TEAe-APLILGGILTEDNev-----kYA--LEIPYALSILAGGSP- 298 Evansella cell...
WP_012957283  231 AVATALIGDFSGKYLAEYQPEKLAAAEWHFe---TSTe-APLILGGVLDEDQni-----rYA--LEIPYALSILAHGSP- 298 Alkalihalophilus
Q8CUQ7        231 ALATALIGDLSGKYLAEYQPEKLAAAEWHFe---TSSe-APLVMWGVLDDNNep-----qYA--LEIPYALSILAHSWP- 298 Oceanobacillus...
Q9K5W2        231 AIASAIIGDFSGKYLAEYQPEKLAAAEWHFe---TEEr-APLILWGILGEDHev-----kYG--IEIPYALSILAHSDP- 298 Bacillus halod...
25_pfamImport 223 AISTVMIGDASGKFLAKYQPEKLAAAEWHFd---TMTh-APFVYGGFMDENGei-----kYA--LKVPYALSVLAGNLP- 290
WP_014368396  231 SLATAAIGDLSGKFLAKYQPEKLAAAEWHFe---TERe-APLVLGGVLGQNNei-----kYR--ISIPYGLSILAHGTP- 298 Paenibacillus ...
Q5NI13        312 D----TEIPGIKAIlygkktadgtrdpnlayyrdiktgqtadvspedaaadpskyekvpsalvmikegglayadllkwre 387 Francisella tu...
EQB64374      302 Tlg-kGTVPGLDQFp----------------------------------------------------------------- 315
EQB70920      297 TlnskTAVPGLSQFp----------------------------------------------------------------- 311
Q9HJH6        306 Nl--nTPVPGLSQFn----------------------------------------------------------------- 318 Thermoplasma a...
WP_013486884  299 D----TVVVGLNDFd----------------------------------------------------------------- 309 Evansella cell...
WP_012957283  299 G----AEVIGLEEFp----------------------------------------------------------------- 309 Alkalihalophilus
Q8CUQ7        299 T----AEVIGLNEFp----------------------------------------------------------------- 309 Oceanobacillus...
Q9K5W2        299 N----AEVIGLNEFp----------------------------------------------------------------- 309 Bacillus halod...
25_pfamImport 291 S----TEVKGLNDYp----------------------------------------------------------------- 301
WP_014368396  299 D----GEVIGLNEFp----------------------------------------------------------------- 309 Paenibacillus ...
Q5NI13        388 tghsgdtpdssytnynnptyqkymgfgkmlvqaaqekygvadsatiakaandpelvravatNMVPDvASVFWSFRIMVFI 467 Francisella tu...
EQB64374      316 ------------------------------------------------------------tSLWPP-LFIHLTFDTMVGG 334
EQB70920      312 ------------------------------------------------------------sSLWPP-LFVHLTFDIMVGG 330
Q9HJH6        319 ------------------------------------------------------------pSTWPP-LAVHDTFDLMVLG 337 Thermoplasma a...
WP_013486884  310 ------------------------------------------------------------eEYLPp-LWVHYAFDLMVFI 328 Evansella cell...
WP_012957283  310 ------------------------------------------------------------qDELPp-LIVHYFFDAMVGI 328 Alkalihalophilus
Q8CUQ7        310 ------------------------------------------------------------eDEQPp-LIIHYFFDTMVTI 328 Oceanobacillus...
Q9K5W2        310 ------------------------------------------------------------eEYQPp-LIIHYFFDMMITI 328 Bacillus halod...
25_pfamImport 302 ------------------------------------------------------------vEERPp-LSIHYMFDLKITT 320
WP_014368396  310 ------------------------------------------------------------eDERPp-LYIHYLFNLKVAF 328 Paenibacillus ...
Q5NI13        468 GFFMFTLIVVgLIllarnalt-snafsrfILRVMIWSIPLPYIACIAGWYVTEHGRQPWTVYDQLPTSISSsaLTAADVG 546 Francisella tu...
EQB64374      335 GFLVGLFALY--Lawrlfrr--ksitttiPLYGMIVSGLLLVLVYDSGWVTDEVGRQPWIIYNVMTVQSAA--NTSPSII 408
EQB70920      331 GTLVGLFALY--Lmyllvmr--kdltgrlSLYGMLVAGVLIEVVYDSGWVTDEVGRQPWIIYNVMTVSQAA--NTSPSVV 404
Q9HJH6        338 GSLLGLYLFV-TLiawilkk--kpyenkgFLVAQILFAILTIPIYIGGWVTDEVGRQPWIIYNVMTVYQAA--NYSPSIV 412 Thermoplasma a...
WP_013486884  329 GIYLAAVSAI--Fvfinwtkk-wnaftkpLLWAVVAGGPLSMIAIEAGWFFTEVGRQPWILNGVMTVSEGA--TTSQHVD 403 Evansella cell...
WP_012957283  329 GMFLALVSVA--Yvfiqrtkr-wnehnrlLLWAIFIGGPLSIIAIEMGWFFAELGRQPWILVGYMTTAEGA--TTSAHVD 403 Alkalihalophilus
Q8CUQ7        329 GVFMLGLSFI--Ywlgirkrw-nfveskwYRWLIVLGGPLSFLAIEAGWWMAEVGRQPWILRGIMTIDEAA--TTSDYVG 403 Oceanobacillus...
Q9K5W2        329 GMFMLALSFV--Flvarwrnw-sfvdkngYRWLIVMGAPLSFLAIQAGWWMAEVGRQPWILRGIMTVDEAA--TTAAYVD 403 Bacillus halod...
25_pfamImport 321 GVLILVIPLL--Ylirkrlpg-rkpyprwLLLALILVGPMAMVAIELGWMFAEVGRQPWILRGYMKVSEAA--TTSTSVG 395
WP_014368396  329 GMYLALVGFL--YllrsrkhrgrelvpkwLLAAIVAAGPLAMITIELGWFFAEVGRQPWILRGYMKVADAA--TTSSHVD 404 Paenibacillus ...
Q5NI13        547 TSMAIFFLIDTALFAVMVFLMFKYARLGP 575 Francisella tularensis subsp. tularensis
EQB64374      409 PLGIGIIVFYFLVVPFCFYFSYKILKNEa 437
EQB70920      405 PLGIAIIIFYLVLVPFTFYFAAKVLRQEr 433
Q9HJH6        413 VPGYLIMAFYTVIMPFSYWYAFRLMKKGD 441 Thermoplasma acidophilum
WP_013486884  404 ILLYVFVVLYAILGVTCVVVLRRMFKTNP 432 Evansella cellulosilytica
WP_012957283  404 LMLYLFIGLYLILTITCITVLRKLFSSNP 432 Alkalihalophilus
Q8CUQ7        404 IMFYLFVLLYLILGVGTVVVLRKMFQRSP 432 Oceanobacillus iheyensis
Q9K5W2        404 VVFLGFVLLYLILGIGTIVVLRRMFRKRs 432 Bacillus halodurans
25_pfamImport 396 WMLVLFVILYLVLCFSAIKVLSKLFRNK- 423
WP_014368396  405 TMLLLFCLLYLVLGVTVVRVLSKLFRNyd 433 Paenibacillus mucilaginosus
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