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3RGM

Crystal structure of spin-labeled BtuB T156R1

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
Functional Information from PDB Data
site_idAC1
Number of Residues11
DetailsBINDING SITE FOR RESIDUE C8E A 800
ChainResidue
AARG358
AHOH646
AC8E805
AARG367
AGLY369
ATHR370
ATRP371
APHE470
ATHR472
AGLY473
AHOH644

site_idAC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE C8E A 801
ChainResidue
ATHR338
AASP361
ASER363
ATYR383
APHE422
AHOH637
AHOH687

site_idAC3
Number of Residues8
DetailsBINDING SITE FOR RESIDUE C8E A 802
ChainResidue
AILE261
AASN302
AALA313
AGLY314
ATRP431
AILE433
AALA466
AC8E804

site_idAC4
Number of Residues8
DetailsBINDING SITE FOR RESIDUE C8E A 803
ChainResidue
AILE311
AGLY344
ALEU345
AGLN346
APHE353
AGLY355
AALA356
ATHR373

site_idAC5
Number of Residues6
DetailsBINDING SITE FOR RESIDUE C8E A 804
ChainResidue
ATRP214
ATYR256
AILE261
ATYR436
AGLY463
AC8E802

site_idAC6
Number of Residues3
DetailsBINDING SITE FOR RESIDUE C8E A 805
ChainResidue
ATRP371
ATYR505
AC8E800

site_idAC7
Number of Residues1
DetailsBINDING SITE FOR RESIDUE MG A 595
ChainResidue
ATYR256

site_idAC8
Number of Residues2
DetailsBINDING SITE FOR RESIDUE MG A 596
ChainResidue
ATYR522
ATHR525

site_idAC9
Number of Residues4
DetailsBINDING SITE FOR RESIDUE MG A 601
ChainResidue
AHIS174
AHIS176
AHIS449
AMG602

site_idBC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE MG A 602
ChainResidue
AHIS174
AHIS176
AHIS449
AMG601

site_idBC2
Number of Residues1
DetailsBINDING SITE FOR RESIDUE MG A 603
ChainResidue
ASER263

site_idBC3
Number of Residues3
DetailsBINDING SITE FOR RESIDUE MTN A 604
ChainResidue
ACYS156
AGLN157
ALEU168

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 Residues62
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 Residues17
DetailsMotif: {"description":"TonB C-terminal box"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues7
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"12652322","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1NQH","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"12652322","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

250359

PDB entries from 2026-03-11

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