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2IQA

PFA2 FAB fragment, monoclinic apo form

Functional Information from GO Data
ChainGOidnamespacecontents
A0005576cellular_componentextracellular region
A0005886cellular_componentplasma membrane
A0006955biological_processimmune response
A0019814cellular_componentimmunoglobulin complex
L0005576cellular_componentextracellular region
L0005886cellular_componentplasma membrane
L0006955biological_processimmune response
L0019814cellular_componentimmunoglobulin complex
Functional Information from PDB Data
site_idAC1
Number of Residues3
DetailsBINDING SITE FOR RESIDUE CL H 301
ChainResidue
HARG94
HALA96
HTRP100

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE ACM L 1219
ChainResidue
HARG213
LPRO118
LPRO119
LTYR185
LARG210
LCYS213

site_idAC3
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ACM A 1219
ChainResidue
AASN209
AGLU212
ACYS213
BVAL127

site_idAC4
Number of Residues8
DetailsBINDING SITE FOR RESIDUE GOL L 401
ChainResidue
HPRO167
HTHR176
HSER178
LLEU159
LSER161
LSER175
LSER176
LTHR177

site_idAC5
Number of Residues6
DetailsBINDING SITE FOR RESIDUE GOL L 407
ChainResidue
LLEU37
LGLY57
LARG61
LGLU81
LASP82
LHOH1293

site_idAC6
Number of Residues3
DetailsBINDING SITE FOR RESIDUE GOL H 405
ChainResidue
HGLU148
HVAL150
HALA168

site_idAC7
Number of Residues5
DetailsBINDING SITE FOR RESIDUE GOL H 408
ChainResidue
BASP55
BLYS57
HASP56
HASN58
HHIS97

site_idAC8
Number of Residues10
DetailsBINDING SITE FOR RESIDUE GOL A 402
ChainResidue
ALEU159
ASER161
ASER175
ASER176
ATHR177
BPRO167
BVAL169
BTHR176
BLEU177
BSER178

site_idAC9
Number of Residues6
DetailsBINDING SITE FOR RESIDUE GOL A 403
ChainResidue
ALEU37
AGLY57
APRO59
APHE62
AGLU81
AASP82

site_idBC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE GOL B 404
ChainResidue
BGLU148
BPRO149
BVAL150
BPRO167
BALA168
BHOH430

site_idBC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE GOL B 406
ChainResidue
BTRP52
BTRP53
BASP54
BASP56

Functional Information from PROSITE/UniProt
site_idPS00290
Number of Residues7
DetailsIG_MHC Immunoglobulins and major histocompatibility complex proteins signature. YTCEATH
ChainResidueDetails
LTYR191-HIS197

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI2
Number of Residues44
DetailsRegion: {"description":"Framework-1"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues30
DetailsRegion: {"description":"Complementarity-determining-1"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues28
DetailsRegion: {"description":"Framework-2"}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues12
DetailsRegion: {"description":"Complementarity-determining-2"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues62
DetailsRegion: {"description":"Framework-3"}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues16
DetailsRegion: {"description":"Complementarity-determining-3"}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues18
DetailsRegion: {"description":"Framework-4"}
ChainResidueDetails

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PDB entries from 2026-04-01

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