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4BKY

Crystal structure of unphosphorylated Maternal Embryonic Leucine zipper Kinase (MELK) in complex with pyrrolopyrazole inhibitor

Functional Information from GO Data
ChainGOidnamespacecontents
A0004672molecular_functionprotein kinase activity
A0004674molecular_functionprotein serine/threonine kinase activity
A0005524molecular_functionATP binding
A0006468biological_processprotein phosphorylation
Functional Information from PDB Data
site_idAC1
Number of Residues19
DetailsBINDING SITE FOR RESIDUE 82B A 1334
ChainResidue
AGLY18
ACYS89
APRO90
AGLY92
AGLU136
AASN137
ALEU139
AILE149
AHOH2017
AHOH2050
AHOH2082
ATHR19
AGLY20
AALA23
AVAL25
AALA38
ALEU86
AGLU87
ATYR88

Functional Information from PROSITE/UniProt
site_idPS00107
Number of Residues24
DetailsPROTEIN_KINASE_ATP Protein kinases ATP-binding region signature. IGTGGFAKVKlAchiltgem..........VAIK
ChainResidueDetails
AILE17-LYS40

site_idPS00108
Number of Residues13
DetailsPROTEIN_KINASE_ST Serine/Threonine protein kinases active-site signature. YaHrDLKpeNLLF
ChainResidueDetails
ATYR128-PHE140

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues39
DetailsRegion: {"description":"UBA-like"}
ChainResidueDetails

site_idSWS_FT_FI2
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_FI3
Number of Residues9
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00159","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsModified residue: {"description":"Phosphothreonine; by autocatalysis","evidences":[{"source":"PubMed","id":"16216881","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine; by autocatalysis","evidences":[{"source":"PubMed","id":"16216881","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

238895

PDB entries from 2025-07-16

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