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2RTB

APOSTREPTAVIDIN, PH 3.32, SPACE GROUP I222

Functional Information from GO Data
ChainGOidnamespacecontents
B0009374molecular_functionbiotin binding
D0009374molecular_functionbiotin binding
Functional Information from PDB Data
site_idAC1
Number of Residues2
DetailsBINDING SITE FOR RESIDUE NA B 403
ChainResidue
BSER45
BCL1464

site_idAC2
Number of Residues5
DetailsBINDING SITE FOR RESIDUE ACT B 404
ChainResidue
BGLY48
BASN49
BALA86
BSER88
BHOH506

site_idAC3
Number of Residues1
DetailsBINDING SITE FOR RESIDUE CL D 503
ChainResidue
DVAL47

site_idAC4
Number of Residues4
DetailsBINDING SITE FOR RESIDUE CL D 1459
ChainResidue
DSER27
DTYR43
DHOH508
DASN23

site_idAC5
Number of Residues4
DetailsBINDING SITE FOR RESIDUE CL B 1464
ChainResidue
BASN23
BSER27
BTYR43
BNA403

Functional Information from PROSITE/UniProt
site_idPS00577
Number of Residues15
DetailsAVIDIN_1 Avidin-like domain signature. NawKStlVGhDtFTK
ChainResidueDetails
BASN118-LYS132

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues122
DetailsDomain: {"description":"Avidin-like","evidences":[{"source":"PROSITE-ProRule","id":"PRU00656","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues4
DetailsMotif: {"description":"Cell attachment site; atypical"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues10
DetailsBinding site: {}
ChainResidueDetails

242500

PDB entries from 2025-10-01

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