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3A4O

Lyn kinase domain

Functional Information from GO Data
ChainGOidnamespacecontents
X0004672molecular_functionprotein kinase activity
X0004713molecular_functionprotein tyrosine kinase activity
X0005524molecular_functionATP binding
X0006468biological_processprotein phosphorylation
Functional Information from PDB Data
site_idAC1
Number of Residues10
DetailsBINDING SITE FOR RESIDUE STU X 902
ChainResidue
XLEU22
XLEU143
XVAL30
XTHR88
XGLU89
XTYR90
XMET91
XGLY94
XSER95
XALA140

Functional Information from PROSITE/UniProt
site_idPS00107
Number of Residues23
DetailsPROTEIN_KINASE_ATP Protein kinases ATP-binding region signature. LGAGQFGEVWmGyynnstk...........VAVK
ChainResidueDetails
XLEU22-LYS44

site_idPS00109
Number of Residues13
DetailsPROTEIN_KINASE_TYR Tyrosine protein kinases specific active-site signature. YIHrDLRAANVLV
ChainResidueDetails
XTYR132-VAL144

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues1
DetailsActive site: {"description":"Proton acceptor","evidences":[{"source":"PROSITE-ProRule","id":"PRU00159","evidenceCode":"ECO:0000255"},{"source":"PROSITE-ProRule","id":"PRU10028","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues9
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00159","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsModified residue: {"description":"Phosphotyrosine","evidences":[{"source":"PubMed","id":"19369195","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsModified residue: {"description":"Phosphotyrosine","evidences":[{"source":"PubMed","id":"18577747","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues1
DetailsModified residue: {"description":"Phosphotyrosine","evidences":[{"source":"PubMed","id":"18691976","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"19369195","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 1ir3
ChainResidueDetails
XASP136
XALA140

site_idCSA2
Number of Residues2
DetailsAnnotated By Reference To The Literature 1ir3
ChainResidueDetails
XASP136
XARG138

site_idCSA3
Number of Residues3
DetailsAnnotated By Reference To The Literature 1ir3
ChainResidueDetails
XASP136
XARG138
XASN141

239803

PDB entries from 2025-08-06

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