MELK | Maternal embryonic leucine zipper kinase
 
image/svg+xmlExtracellular space Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi Apparatus Nucleus Mitochondrion None Substrate Localization legend

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Sequence Viewer
Gene
Synonyms
KIAA0175
Protein Name
Maternal embryonic leucine zipper kinase
UniProt ID
Q14680 [go to UniProt ] [go to PDBe-KB ]
Ensembl Gene ID
NCBI Gene ID
Molecular Weight
74642
Protein Length
651
Protein Domain
3D Structure
(PDB ID : 5ihc)
Target by Small Molecules
Protein-protein Interaction Database
Gene Expression
Drugs and Diseases
Enzyme Class
2.7.11.1; (BRENDA)
Catalytic Site
Catalytic Activity
ATP + L-tyrosyl-[protein] = ADP + H(+) + O-phospho-L-tyrosyl-[protein]ATP + L-seryl-[protein] = ADP + H(+) + O-phospho-L-seryl-[protein]ATP + L-threonyl-[protein] = ADP + H(+) + O-phospho-L-threonyl-[protein]
Localization
Cell membrane;
Function
Serine/threonine-protein kinase involved in various processes such as cell cycle regulation, self-renewal of stem cells, apoptosis and splicing regulation. Has a broad substrate specificity; phosphorylates BCL2L14, CDC25B, MAP3K5/ASK1 and ZNF622. Acts as an activator of apoptosis by phosphorylating and activating MAP3K5/ASK1. Acts as a regulator of cell cycle, notably by mediating phosphorylation of CDC25B, promoting localization of CDC25B to the centrosome and the spindle poles during mitosis. Plays a key role in cell proliferation and carcinogenesis. Required for proliferation of embryonic and postnatal multipotent neural progenitors. Phosphorylates and inhibits BCL2L14, possibly leading to affect mammary carcinogenesis by mediating inhibition of the pro-apoptotic function of BCL2L14. Also involved in the inhibition of spliceosome assembly during mitosis by phosphorylating ZNF622, thereby contributing to its redirection to the nucleus. May also play a role in primitive hematopoiesis.
Gene Ontology
GO:0005938; GO:0005737; GO:0016020; GO:0005634; GO:0005886; GO:0005524; GO:0005509; GO:0008289; GO:0004715; GO:0004674; GO:0006915; GO:0008283; GO:0000086; GO:0030097; GO:0035556; GO:0008631; GO:0061351; GO:0043065; GO:0046777; GO:0006468
 
Gene Ontology