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2QI9

ABC-transporter BtuCD in complex with its periplasmic binding protein BtuF

Functional Information from GO Data
ChainGOidnamespacecontents
A0005515molecular_functionprotein binding
A0005886cellular_componentplasma membrane
A0015420molecular_functionABC-type vitamin B12 transporter activity
A0015889biological_processcobalamin transport
A0016020cellular_componentmembrane
A0022857molecular_functiontransmembrane transporter activity
A0035461biological_processvitamin transmembrane transport
A0042802molecular_functionidentical protein binding
A0043190cellular_componentATP-binding cassette (ABC) transporter complex
A0055085biological_processtransmembrane transport
A0090482molecular_functionvitamin transmembrane transporter activity
B0005515molecular_functionprotein binding
B0005886cellular_componentplasma membrane
B0015420molecular_functionABC-type vitamin B12 transporter activity
B0015889biological_processcobalamin transport
B0016020cellular_componentmembrane
B0022857molecular_functiontransmembrane transporter activity
B0035461biological_processvitamin transmembrane transport
B0042802molecular_functionidentical protein binding
B0043190cellular_componentATP-binding cassette (ABC) transporter complex
B0055085biological_processtransmembrane transport
B0090482molecular_functionvitamin transmembrane transporter activity
C0000166molecular_functionnucleotide binding
C0005515molecular_functionprotein binding
C0005524molecular_functionATP binding
C0005886cellular_componentplasma membrane
C0015420molecular_functionABC-type vitamin B12 transporter activity
C0015889biological_processcobalamin transport
C0016020cellular_componentmembrane
C0016887molecular_functionATP hydrolysis activity
C0019898cellular_componentextrinsic component of membrane
C0042626molecular_functionATPase-coupled transmembrane transporter activity
C0043190cellular_componentATP-binding cassette (ABC) transporter complex
C0055085biological_processtransmembrane transport
D0000166molecular_functionnucleotide binding
D0005515molecular_functionprotein binding
D0005524molecular_functionATP binding
D0005886cellular_componentplasma membrane
D0015420molecular_functionABC-type vitamin B12 transporter activity
D0015889biological_processcobalamin transport
D0016020cellular_componentmembrane
D0016887molecular_functionATP hydrolysis activity
D0019898cellular_componentextrinsic component of membrane
D0042626molecular_functionATPase-coupled transmembrane transporter activity
D0043190cellular_componentATP-binding cassette (ABC) transporter complex
D0055085biological_processtransmembrane transport
F0015889biological_processcobalamin transport
F0031419molecular_functioncobalamin binding
F0042597cellular_componentperiplasmic space
Functional Information from PDB Data
site_idAC1
Number of Residues8
DetailsBINDING SITE FOR RESIDUE PO4 C 701
ChainResidue
CASN35
CGLY36
CALA37
CGLY38
CLYS39
CSER40
CHOH903
CHOH906

site_idAC2
Number of Residues8
DetailsBINDING SITE FOR RESIDUE PO4 D 701
ChainResidue
DGLY36
DALA37
DGLY38
DLYS39
DSER40
DHOH903
DHOH906
DASN35

site_idAC3
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 C 601
ChainResidue
CARG217
CARG243

site_idAC4
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 C 602
ChainResidue
CARG202
CARG216

site_idAC5
Number of Residues4
DetailsBINDING SITE FOR RESIDUE SO4 C 603
ChainResidue
CARG198
CHIS199
CALA200
CHIS201

site_idAC6
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 D 601
ChainResidue
DARG217
DARG243

site_idAC7
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 D 602
ChainResidue
DARG202
DARG216

site_idAC8
Number of Residues4
DetailsBINDING SITE FOR RESIDUE SO4 D 603
ChainResidue
DARG198
DHIS199
DALA200
DHIS201

site_idAC9
Number of Residues12
DetailsBINDING SITE FOR RESIDUE 1PE C 800
ChainResidue
CGLU159
CPRO160
CMSE161
CASN162
CSER163
CLEU164
CMSE188
CSER189
CHIS191
DGLU159
DASN162
D1PE800

site_idBC1
Number of Residues12
DetailsBINDING SITE FOR RESIDUE 1PE D 800
ChainResidue
CGLU159
CASN162
C1PE800
DGLU159
DPRO160
DMSE161
DASN162
DSER163
DLEU164
DMSE188
DSER189
DHIS191

site_idBC2
Number of Residues2
DetailsBINDING SITE FOR RESIDUE PEG C 500
ChainResidue
CLYS207
CGLN228

site_idBC3
Number of Residues3
DetailsBINDING SITE FOR RESIDUE PEG C 501
ChainResidue
CGLN61
CTRP66
CLYS70

site_idBC4
Number of Residues4
DetailsBINDING SITE FOR RESIDUE PEG D 500
ChainResidue
DLYS207
DLYS210
DLEU212
DGLN228

site_idBC5
Number of Residues3
DetailsBINDING SITE FOR RESIDUE PEG D 501
ChainResidue
DGLN61
DTRP66
DLYS70

Functional Information from PROSITE/UniProt
site_idPS00211
Number of Residues15
DetailsABC_TRANSPORTER_1 ABC transporters family signature. LSGGEWQRVRLAAVV
ChainResidueDetails
CLEU127-VAL141

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues64
DetailsTopological domain: {"description":"Periplasmic","evidences":[{"source":"PubMed","id":"15919996","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues36
DetailsTopological domain: {"description":"Cytoplasmic","evidences":[{"source":"PubMed","id":"15919996","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues28
DetailsTransmembrane: {"description":"Helical; Name=3"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues48
DetailsTransmembrane: {"description":"Helical; Name=4"}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues18
DetailsTransmembrane: {"description":"Helical; Name=8"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues14
DetailsBinding site: {"evidences":[{"source":"HAMAP-Rule","id":"MF_01005","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"HAMAP-Rule","id":"MF_01000","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"12468528","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1N4A","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"HAMAP-Rule","id":"MF_01000","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"12468528","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"12475936","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1N2Z","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1N4A","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues2
DetailsSite: {"description":"Important for BtuC binding","evidences":[{"source":"HAMAP-Rule","id":"MF_01000","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"12475936","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

248636

PDB entries from 2026-02-04

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