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2DWE

Crystal structure of KcsA-FAB-TBA 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
Functional Information from PDB Data
site_idAC1
Number of Residues8
DetailsBINDING SITE FOR RESIDUE RB C 3001
ChainResidue
CGLY77
CGLY77
CGLY77
CGLY77
CTYR78
CTYR78
CTYR78
CTYR78

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE RB C 3002
ChainResidue
CTHR75
CTHR75
CTHR75
CTHR75

site_idAC3
Number of Residues8
DetailsBINDING SITE FOR RESIDUE RB C 3003
ChainResidue
CTHR75
CTHR75
CTHR75
CTHR75
CVAL76
CVAL76
CVAL76
CVAL76

site_idAC4
Number of Residues9
DetailsBINDING SITE FOR RESIDUE L2C C 201
ChainResidue
BGLU53
CPRO63
CLEU66
CVAL70
CVAL84
CTHR85
CLEU86
CARG89
CVAL93

site_idAC5
Number of Residues3
DetailsBINDING SITE FOR RESIDUE F09 C 202
ChainResidue
ATYR55
AARG57
CVAL91

site_idAC6
Number of Residues12
DetailsBINDING SITE FOR RESIDUE TBA C 4001
ChainResidue
CALA73
CALA73
CALA73
CTHR74
CTHR74
CTHR74
CTHR74
CTHR75
CTHR75
CTHR75
CTHR75
CILE100

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 Residues45
DetailsTransmembrane: {"description":"Helical"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues16
DetailsTopological domain: {"description":"Extracellular"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues10
DetailsIntramembrane: {"description":"Helical; Pore-forming"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues7
DetailsIntramembrane: {"description":"Pore-forming"}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues5
DetailsMotif: {"description":"Selectivity filter"}
ChainResidueDetails

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PDB entries from 2025-11-05

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