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5T19

Structure of PTP1B complexed with N-(3'-(1,1-dioxido-4-oxo-1,2,5-thiadiazolidin-2-yl)-4'-methyl-[1,1'-biphenyl]-4-yl)acetamide

Functional Information from GO Data
ChainGOidnamespacecontents
A0004725molecular_functionprotein tyrosine phosphatase activity
A0006470biological_processprotein dephosphorylation
A0016311biological_processdephosphorylation
Functional Information from PDB Data
site_idAC1
Number of Residues6
Detailsbinding site for residue MG A 401
ChainResidue
AHOH527
AHOH529
AHOH530
AHOH641
AHOH651
AHOH664

site_idAC2
Number of Residues13
Detailsbinding site for residue 73U A 402
ChainResidue
APHE182
ACYS215
ASER216
AALA217
AILE219
AGLY220
AARG221
AGLN262
AGLN266
ASER285
ATYR46
AVAL49
AASP181

site_idAC3
Number of Residues6
Detailsbinding site for residue CL A 403
ChainResidue
AARG45
APRO89
ACYS121
AALA122
ALYS239
AHOH604

site_idAC4
Number of Residues3
Detailsbinding site for residue CL A 404
ChainResidue
ALYS116
AGLY117
ASER205

site_idAC5
Number of Residues4
Detailsbinding site for residue CL A 405
ChainResidue
AARG112
AVAL113
AHIS175
AHOH571

Functional Information from PROSITE/UniProt
site_idPS00383
Number of Residues11
DetailsTYR_PHOSPHATASE_1 Tyrosine specific protein phosphatases active site. VHCsaGigRSG
ChainResidueDetails
AVAL213-GLY223

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues274
DetailsDomain: {"description":"Tyrosine-protein phosphatase","evidences":[{"source":"PROSITE-ProRule","id":"PRU00160","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsActive site: {"description":"Phosphocysteine intermediate"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues7
DetailsBinding site: {"evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues1
DetailsModified residue: {"description":"N-acetylmethionine","evidences":[{"source":"PubMed","id":"2546149","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsModified residue: {"description":"Phosphotyrosine","evidences":[{"source":"PubMed","id":"15592455","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine; by PKB/AKT1, CLK1 and CLK2","evidences":[{"source":"PubMed","id":"10480872","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"11579209","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"23186163","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues1
DetailsModified residue: {"description":"Phosphotyrosine; by EGFR","evidences":[{"source":"PubMed","id":"9355745","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues1
DetailsModified residue: {"description":"S-nitrosocysteine; in reversibly inhibited form","evidences":[{"source":"PubMed","id":"22169477","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine; by CLK1 and CLK2","evidences":[{"source":"PubMed","id":"10480872","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues2
DetailsCross-link: {"description":"N,N-(cysteine-1,S-diyl)serine (Cys-Ser); in inhibited form","evidences":[{"source":"PubMed","id":"12802338","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"12802339","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idMCSA1
Number of Residues5
DetailsM-CSA 469
ChainResidueDetails
AASP181proton shuttle (general acid/base)
ACYS215covalent catalysis
AARG221activator, electrostatic stabiliser
ASER222activator, electrostatic stabiliser
AGLN262steric role

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PDB entries from 2025-12-24

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