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4IMY

The AFF4 scaffold binds human P-TEFb adjacent to HIV Tat

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
C0004672molecular_functionprotein kinase activity
C0005524molecular_functionATP binding
C0006468biological_processprotein phosphorylation
D0006357biological_processregulation of transcription by RNA polymerase II
D0016538molecular_functioncyclin-dependent protein serine/threonine kinase regulator activity
E0004672molecular_functionprotein kinase activity
E0005524molecular_functionATP binding
E0006468biological_processprotein phosphorylation
F0006357biological_processregulation of transcription by RNA polymerase II
F0016538molecular_functioncyclin-dependent protein serine/threonine kinase regulator activity
G0010468biological_processregulation of gene expression
H0010468biological_processregulation of gene expression
I0010468biological_processregulation of gene expression
Functional Information from PDB Data
site_idAC1
Number of Residues14
DetailsBINDING SITE FOR RESIDUE AMP A 401
ChainResidue
AALA46
ALEU156
AALA166
AASP167
APHE168
AGLY169
ALYS48
AGLU66
ALEU70
AVAL79
APHE103
AASP104
APHE105
ACYS106

site_idAC2
Number of Residues10
DetailsBINDING SITE FOR RESIDUE AMP C 401
ChainResidue
CALA46
CLYS48
CPHE103
CASP104
CPHE105
CCYS106
CALA153
CASN154
CASP167
CPHE168

site_idAC3
Number of Residues11
DetailsBINDING SITE FOR RESIDUE AMP E 401
ChainResidue
EALA46
ELYS48
EGLU66
EVAL79
EPHE103
EASP104
EPHE105
ECYS106
ELEU156
EASP167
EPHE168

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 Residues3
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 Residues16
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00159","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues12
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 Residues3
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 Residues3
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 Residues3
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"21533037","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues3
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 Residues3
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 Residues3
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"24275569","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues3
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"19369195","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

242842

PDB entries from 2025-10-08

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