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1R3I

potassium channel KcsA-Fab complex in Rb+

Functional Information from GO Data
ChainGOidnamespacecontents
C0005249molecular_functionvoltage-gated potassium channel activity
C0006813biological_processpotassium ion transport
C0008076cellular_componentvoltage-gated potassium channel complex
L0002250biological_processadaptive immune response
L0005515molecular_functionprotein binding
L0005576cellular_componentextracellular region
L0005886cellular_componentplasma membrane
L0030183biological_processB cell differentiation
L0042105cellular_componentalpha-beta T cell receptor complex
L0071735cellular_componentIgG immunoglobulin complex
Functional Information from PDB Data
site_idAC1
Number of Residues8
DetailsBINDING SITE FOR RESIDUE RB C 201
ChainResidue
CGLY77
CGLY77
CGLY77
CGLY77
CTYR78
CTYR78
CTYR78
CTYR78

site_idAC2
Number of Residues8
DetailsBINDING SITE FOR RESIDUE RB C 202
ChainResidue
CTHR75
CTHR75
CTHR75
CVAL76
CVAL76
CVAL76
CVAL76
CTHR75

site_idAC3
Number of Residues4
DetailsBINDING SITE FOR RESIDUE RB C 203
ChainResidue
CTHR75
CTHR75
CTHR75
CTHR75

site_idAC4
Number of Residues7
DetailsBINDING SITE FOR RESIDUE DGA C 301
ChainResidue
CTYR45
CPRO63
CLEU86
CARG89
CVAL93
CHOH315
LGLU53

site_idAC5
Number of Residues2
DetailsBINDING SITE FOR RESIDUE F09 H 401
ChainResidue
CTRP87
HARG57

Functional Information from PROSITE/UniProt
site_idPS00290
Number of Residues7
DetailsIG_MHC Immunoglobulins and major histocompatibility complex proteins signature. YTCEATH
ChainResidueDetails
LTYR192-HIS198

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues97
DetailsDomain: {"description":"Ig-like","evidences":[{"source":"PROSITE-ProRule","id":"PRU00114","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues96
DetailsRegion: {"description":"CH1"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues45
DetailsTransmembrane: {"description":"Helical"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues16
DetailsTopological domain: {"description":"Extracellular"}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues10
DetailsIntramembrane: {"description":"Helical; Pore-forming"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues7
DetailsIntramembrane: {"description":"Pore-forming"}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues5
DetailsMotif: {"description":"Selectivity filter"}
ChainResidueDetails

245663

PDB entries from 2025-12-03

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