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3FB6

KcsA Potassium channel in the partially open state with 16 A opening at T112

Functional Information from GO Data
ChainGOidnamespacecontents
B0002250biological_processadaptive immune response
B0005576cellular_componentextracellular region
B0005886cellular_componentplasma membrane
B0030183biological_processB cell differentiation
B0042105cellular_componentalpha-beta T cell receptor complex
B0071735cellular_componentIgG immunoglobulin complex
C0005249molecular_functionvoltage-gated potassium channel activity
C0006813biological_processpotassium ion transport
C0008076cellular_componentvoltage-gated potassium channel complex
Functional Information from PDB Data
site_idAC1
Number of Residues1
DetailsBINDING SITE FOR RESIDUE K C 2
ChainResidue
CTHR75

site_idAC2
Number of Residues2
DetailsBINDING SITE FOR RESIDUE K C 3
ChainResidue
CTHR75
CVAL76

site_idAC3
Number of Residues2
DetailsBINDING SITE FOR RESIDUE K C 4
ChainResidue
CGLY77
CTYR78

Functional Information from PROSITE/UniProt
site_idPS00290
Number of Residues7
DetailsIG_MHC Immunoglobulins and major histocompatibility complex proteins signature. YTCEATH
ChainResidueDetails
BTYR192-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 Residues45
DetailsTransmembrane: {"description":"Helical"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues16
DetailsTopological domain: {"description":"Extracellular"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues10
DetailsIntramembrane: {"description":"Helical; Pore-forming"}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues7
DetailsIntramembrane: {"description":"Pore-forming"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues5
DetailsMotif: {"description":"Selectivity filter"}
ChainResidueDetails

244693

PDB entries from 2025-11-12

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