MAP/microtubule affinity-regulating kinase 4 is an enzyme that in humans is encoded by the MARK4 gene. [5] [6] [7] MARK4 belongs to the family of serine/threonine kinases that phosphorylate microtubule-associated proteins (MAP) causing their detachment from microtubules. [8] Detachment thereby increases microtubule dynamics and facilitates a number of cell activities including cell division, cell cycle control, cell polarity determination, and cell shape alterations. [9]
There are four members of the MARK protein family, MARK1-4, which are highly conserved. MARK4 kinase has been shown to be involved in microtubule organization in neuronal cells. Levels of MARK4 are elevated in Alzheimer's disease and may contribute to the pathological phosphorylation of tau protein in this disease.
MARK4 has been shown to interact with USP9X [10] and Ubiquitin C. [10]
Aurora kinase B is a protein that functions in the attachment of the mitotic spindle to the centromere.
Calcium/calmodulin-dependent protein kinase type II subunit alpha (CAMKIIα), a.k.a.Ca2+/calmodulin-dependent protein kinase II alpha, is one subunit of CamKII, a protein kinase (i.e., an enzyme which phosphorylates proteins) that in humans is encoded by the CAMK2A gene.
Microtubule-associated protein 4 is a protein that in humans is encoded by the MAP4 gene.
protein S6 kinase, 90kDa, polypeptide 3, also s RPS6KA3, is an enzyme that in humans is encoded by the RPS6KA3 gene.
Serine/threonine-protein kinase N1 is an enzyme that in humans is encoded by the PKN1 gene.
Polo-like kinase 3 (Drosophila), also known as PLK3, is an enzyme which in humans is encoded by the PLK3 gene.
Serine/threonine-protein kinase MARK2 is an enzyme that in humans is encoded by the MARK2 gene.
Tubulin beta-4B chain formerly known as tubulin beta-2C chain is a protein that in humans is encoded by the TUBB4B gene.
Serine/threonine-protein kinase MARK1 is an enzyme that in humans is encoded by the MARK1 gene.
Phosphorylase b kinase gamma catalytic chain, skeletal muscle isoform is an enzyme that in humans is encoded by the PHKG1 gene.
Rho guanine nucleotide exchange factor 2 is a protein that in humans is encoded by the ARHGEF2 gene.
Microtubule-associated serine/threonine-protein kinase 2 is an enzyme that in humans is encoded by the MAST2 gene. The protein encoded by this gene controls TRAF6 and NF-kappaB activity.
Serine/threonine-protein kinase D2 or PKD2 is an enzyme that in humans is encoded by the PRKD2 gene.
MAP/microtubule affinity-regulating kinase 3 is an enzyme that in humans is encoded by the MARK3 gene.
Ribosomal protein S6 kinase alpha-4 is an enzyme that in humans is encoded by the RPS6KA4 gene.
Calcium-binding protein 39 is a protein that in humans is encoded by the CAB39 gene.
Serine/threonine-protein kinase 10 is an enzyme that in humans is encoded by the STK10 gene.
ULK1 is an enzyme that in humans is encoded by the ULK1 gene.
TRAF2 and NCK-interacting protein kinase is an enzyme that in humans is encoded by the TNIK gene.
In molecular biology, members of the KIN2/PAR-1/MARK kinase family of proteins are kinases that are conserved from yeast to human and share the same domain organisation: an N-terminal kinase domain and a C-terminal kinase associated domain 1 (KA1). Some members of this family also contain an UBA domain. Members of this kinase family are involved in various biological processes such as cell polarity, cell cycle control, intracellular signalling, microtubule stability and protein stability. The function of the KA1 domain is not yet known.