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3BLR

Crystal Structure of Human CDK9/cyclinT1 in complex with Flavopiridol

Functional Information from GO Data
ChainGOidnamespacecontents
A0004672molecular_functionprotein kinase activity
A0005524molecular_functionATP binding
A0006468biological_processprotein phosphorylation
B0006357biological_processregulation of transcription by RNA polymerase II
B0016538molecular_functioncyclin-dependent protein serine/threonine kinase regulator activity
Functional Information from PDB Data
site_idAC1
Number of Residues3
DetailsBINDING SITE FOR RESIDUE PO4 B 260
ChainResidue
BLYS99
BLYS100
BHIS103

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE PO4 A 331
ChainResidue
AHIS141
AASP305
ASER306
AASP307

site_idAC3
Number of Residues2
DetailsBINDING SITE FOR RESIDUE PO4 B 261
ChainResidue
BASN250
BARG254

site_idAC4
Number of Residues11
DetailsBINDING SITE FOR RESIDUE CPB A 940
ChainResidue
AILE25
APHE30
AALA46
ALYS48
APHE103
ACYS106
AGLU107
AALA153
AASN154
ALEU156
AASP167

Functional Information from PROSITE/UniProt
site_idPS00107
Number of Residues24
DetailsPROTEIN_KINASE_ATP Protein kinases ATP-binding region signature. IGQGTFGEVFkArhrktgqk..........VALK
ChainResidueDetails
AILE25-LYS48

site_idPS00108
Number of Residues13
DetailsPROTEIN_KINASE_ST Serine/Threonine protein kinases active-site signature. IlHrDMKaaNVLI
ChainResidueDetails
AILE145-ILE157

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":"PRU10027","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues8
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00159","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00159","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"18566585","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsModified residue: {"description":"N6-acetyllysine; by EP300/CBP, PCAF/KAT2B and GCN5/KAT2A","evidences":[{"source":"PubMed","id":"17452463","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"18250157","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues1
DetailsModified residue: {"description":"N6-acetyllysine; by PCAF/KAT2B and GCN5/KAT2A","evidences":[{"source":"PubMed","id":"18250157","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28426094","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"21533037","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsModified residue: {"description":"Phosphothreonine; by CaMK1D","evidences":[{"source":"PubMed","id":"15965233","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"18483222","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"18566585","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"18829461","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"20535204","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"20851342","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"21448926","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"21779453","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"21406692","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"18691976","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"19369195","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues1
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"24275569","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"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
AASP149
AALA153

site_idCSA2
Number of Residues2
DetailsAnnotated By Reference To The Literature 1ir3
ChainResidueDetails
ALYS151
AASP149

site_idCSA3
Number of Residues3
DetailsAnnotated By Reference To The Literature 1ir3
ChainResidueDetails
ALYS151
AASP149
ATHR191

site_idCSA4
Number of Residues3
DetailsAnnotated By Reference To The Literature 1ir3
ChainResidueDetails
ALYS151
AASN154
AASP149

238895

PDB entries from 2025-07-16

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