Conserved Protein Domain Family
CbtA

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pfam09490: CbtA (This model is not part of the current CDD release)
Probable cobalt transporter subunit (CbtA)
This entry represents a family of proteins which have been proposed to act as cobalt transporters acting in concert with vitamin B12 biosynthesis systems. Evidence for this assignment includes 1) prediction of five transmembrane segments, 2) positional gene linkage with known B12 biosynthesis genes, 3) upstream proximity of B12 transcriptional regulatory sites, 4) the absence of other known cobalt import systems and 5) the obligate co-localisation with a small protein (CbtB) having a single additional transmembrane segment and a C-terminal histidine-rich motif likely to be a metal-binding site.
Statistics
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PSSM-Id: 518934
Aligned: 62 rows
Threshold Bit Score: 85.0587
Created: 15-Feb-2025
Updated: 28-Apr-2025
Structure
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Aligned Rows:
Sequence Alignment
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Format: Row Display: Color Bits: Type Selection:
WP_025350834    3 KRIIGRGVLVGAIGGLLAFLFARILAEPIINRAIDYEGARDEAHTRLEEaa--------------gHGMhg-------ve 61  Nocardia nova
WP_011748805    3 SRILTSGLIAGAVTGLIAALLQLWFVQPVLLHAELYESGQLAHFGAETVsah-------------------------qdp 57  Paracoccus den...
Q5LPH2          3 SRILTSALFAGAAAGLIAALLQFLFVQPVLLHAELYETGELVHFGAEAVs-----------------------------a 53  Ruegeria pomeroyi
Q1GEG2         28 ARILTSALFAGAAAGLIAALLQLFFVQPVLLHAELYESGALVHFGGETVs-----------------------------a 78  Ruegeria sp. T...
WP_011831809    4 RRLVWCALAAALLVGSLQFAMQRWQALPIILAAERFEDQKAAAPAPAHEhthepvhe-gaaaggheHAAaehhh-deaaw 81  Methylibium pe...
WP_011801540    4 QRLIWAALAAALLVGSVQSGVQQWQAVPIILAAEVYEGQKAEAPAAPVAvmphahvegvapaheheHGAag-------ew 76  Polaromonas na...
Q7D0G1         10 RNIVFTAILVGILGGFAVSAMQAFGTTPLILQAETFESAGEAPHSHDAPapgaa-------vpaheHNDea--------w 74  Agrobacterium ...
jgi:Xaut_3775   5 RALVFAAALSGLLAGLLMTGLQHAATTPLILKAETYEEAAPAPASHDHGshdhgtag-qsvaaphdHAda---------w 74 
1_pfamImport    2 IRYLLATLAAGLLAGLLVTPAMYLKTVPLILQAETYEDAGGGHSHGEAEatp------------hdHGAaae------sa 63 
WP_015928815    3 IRLLSAALVAGFLAACVASGLQFALTSPLILEAEKYETHASLEPVQASSlivla-------hagseHGAghgagaeteew 75  Methylobacteri...
WP_025350834   62 DAE--LFTRSVQENIGIGFGMIVFGAAMGALFAVVYCLF---VGRVGKLSPRNLALCVAGGMFAVLYAVPFFKYPANPPS 136 Nocardia nova
WP_011748805   58 GPF------EWTRNMLSVLFTMMVYAGYGLMLVALMAVS---ESQG-NAVTARQGLLWGLAGYLTMQLAPAFGLAPEVPG 127 Paracoccus den...
Q5LPH2         54 QPDlpGMFADPMRDALTVVFAMLTYTGYAVVMVALMSVA---EGMG-HAITARAGLLWGLAGFITFHFAPGLSLAPEVPG 129 Ruegeria pomeroyi
Q1GEG2         79 HPElpGIFDEPMRNLLSILFTMLIYTGYALILVALMSVA---ERQG-HEIRTGQGLLWGLAGFVALHFAPGFSLAPEVPG 154 Ruegeria sp. T...
WP_011831809   82 SPA-----DGAERGFWTWVANVLHSFSMAMLLFAVMGAWvwrRGGSGG--MARLALAVAAAGWLSLHLWPSLGLPAEVPG 154 Methylibium pe...
WP_011801540   77 APA-----DGAERIFWTWTANVLHAFSMALLVFAVMGVClwrGTAAG---SLPLGLLVAAAGWLSFHFWPSLGLHAEIPG 148 Polaromonas na...
Q7D0G1         75 APA-----DGFERTAYTVAANVLTAIGYALVLTGLISLR---GTNT----GWREGLLWGVAGFAAVMLAPMIGLPPELPG 142 Agrobacterium ...
jgi:Xaut_3775  75 APS-----DGAERLLYTALANVVGAAGFALLLLAVSEVA---GGLA----GWRDGLAWGVAAFAAVTLAPSLSLPPELPA 142
1_pfamImport   64 EEE--GAELPFGRLGNTILANLVAGAGFALLLGGVALLL---GRRI----TVQNGIYWGVAGFFAAAFLPALGLSPELPA 134
WP_015928815   76 QPA-----PGLPRLAFTALATLVSGVGYALLLGAVLLAT---GRPV----TRGEALRFAIGGFLAASLAPAIGLPPELPG 143 Methylobacteri...
WP_025350834  137 IGNPDtIKERTGLYLLMVLISAVAAVGAVWLGRRLqarlgnwtativaglafVVVVTAIAAILPSLghlsanramgeavS 216 Nocardia nova
WP_011748805  128 VAAAD-VQVRAIWWLGTALATGLALWLIAFGKGWA-----------------AWGVAVVLLLAPHV-------------I 176 Paracoccus den...
Q5LPH2        130 VSYTD-ITARQIWWTATVAAAGIAMWLIAFGGNLM-----------------AYGAAALLLIAPHL-------------I 178 Ruegeria pomeroyi
Q1GEG2        155 VAAAD-VGARQIWWAATVASAGVAMWLIAFGGNLV-----------------AYVVAALLLMAPHV-------------I 203 Ruegeria sp. T...
WP_011831809  155 MDAAD-LRARQAWWLLAAAGAAGACGMLAFSTARW-----------------RWIAAAVLLALPFV-------------V 203 Methylibium pe...
WP_011801540  149 MDAAR-LGSRQGWWVLAAGSAALACASLAGLRSPL-----------------RWAAATAWLALPFV-------------V 197 Polaromonas na...
Q7D0G1        143 SPAAA-LEARQIWWLATVAATAGGIALIAFRREPW-----------------AVLLALVLIVAPHV-------------I 191 Agrobacterium ...
jgi:Xaut_3775 143 MPAAD-LFARQAWWIGTAVATAAGIALLVYKRSLP-----------------LAALAVGLIVLPHL-------------I 191
1_pfamImport  135 MPAAD-LAERQLWWLATVVLSGLGLYLIVLRQEIW-----------------AKTLGLVLIVAPHL-------------Y 183
WP_015928815  144 MGGEA-LALRQTWWIATALATAAGLYLVAIRGGAL-----------------AVATGLALIVAPHV-------------W 192 Methylobacteri...
WP_025350834  217 ETPRpltdpsgqivfpGFPADDL------YYFRFYSFAAQVLLWTVIGVGFATLA 265 Nocardia nova
WP_011748805  177 GAPQpds------yagPVPPELS------AEFAGRALGAGAMAWVLLGLLAGWFW 219 Paracoccus denitrificans
Q5LPH2        179 GAPEpes------fagPVPTELG------ALFAARAFGVGMAAWVLLGGFAGHFW 221 Ruegeria pomeroyi
Q1GEG2        204 GAPEpet------fagPVPTEIG------ALFAARALGIGMAAWALLGVFCAYFW 246 Ruegeria sp. TM1040
WP_011831809  204 RAPQvadp-----lagFSGEAHArlaqlgRDFVWATTWVSLSFWASLGVIGGALF 253 Methylibium petroleiphilum
WP_011801540  198 GAPHigad----plagFSGPAQAqlrelgAQFIWATTWVSLSFWASMGFVCGAAF 248 Polaromonas naphthalenivorans
Q7D0G1        192 GAPLppeg-----ehaLAPLPLE------RQFIVAATITSFVFWALIGTLSAFFL 235 Agrobacterium fabrum str. C58
jgi:Xaut_3775 192 GAPQpds------hdsPVPAGLA------HGFVVAVVVTSFVFWAVLGALAGLLR 234
1_pfamImport  184 GAPHped------issPIPSLLA------SQYAVASLATNLFMWAVIGLALGWFI 226
WP_015928815  193 GAPHvae-------ssALPAAVA------AQFAARSIAVAFAFWAVLGLAFGWAW 234 Methylobacterium nodulans
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