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1UJW

Structure of the complex between BtuB and Colicin E3 Receptor binding domain

Functional Information from GO Data
ChainGOidnamespacecontents
A0005509molecular_functioncalcium ion binding
A0005515molecular_functionprotein binding
A0006811biological_processmonoatomic ion transport
A0009279cellular_componentcell outer membrane
A0015288molecular_functionporin activity
A0015420molecular_functionABC-type vitamin B12 transporter activity
A0015889biological_processcobalamin transport
A0016020cellular_componentmembrane
A0019904molecular_functionprotein domain specific binding
A0034220biological_processmonoatomic ion transmembrane transport
A0035461biological_processvitamin transmembrane transport
A0046872molecular_functionmetal ion binding
A0046930cellular_componentpore complex
A0090482molecular_functionvitamin transmembrane transporter activity
A1902495cellular_componenttransmembrane transporter complex
Functional Information from PROSITE/UniProt
site_idPS01156
Number of Residues18
DetailsTONB_DEPENDENT_REC_2 TonB-dependent receptor (TBDR) proteins signature 2. YgyqTaGReYtLSGsYtF
ChainResidueDetails
ATYR577-PHE594

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues278
DetailsTransmembrane: {"description":"Beta stranded"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues86
DetailsTopological domain: {"description":"Extracellular","evidences":[{"source":"PubMed","id":"12652322","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues32
DetailsTopological domain: {"description":"Periplasmic","evidences":[{"source":"PubMed","id":"12652322","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues114
DetailsDomain: {"description":"TBDR plug","evidences":[{"source":"PROSITE-ProRule","id":"PRU01360","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues7
DetailsMotif: {"description":"TonB box"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues17
DetailsMotif: {"description":"TonB C-terminal box"}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues8
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"12652322","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1NQH","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues5
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"12652322","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues6
DetailsMotif: {"description":"Hairpin","evidences":[{"source":"PubMed","id":"11741540","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"14528295","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idMCSA1
Number of Residues
DetailsM-CSA 530
ChainResidueDetails

238582

PDB entries from 2025-07-09

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