GAK

In all eukaryotes, the cell cycle is governed by cyclin-dependent protein kinases (CDKs), whose activities are regulated by cyclins and CDK inhibitors in a diverse array of mechanisms that involve the control of phosphorylation and dephosphorylation of Ser, Thr or Tyr residues. Cyclins are molecules that possess a consensus domain called the 'cyclin box.' In mammalian cells, 9 cyclin species have been identified, and they are referred to as cyclins A through I. Cyclin G is a direct transcriptional target of the p53 tumor suppressor gene product and thus functions downstream of p53. GAK is an association partner of cyclin G and CDK5. Alternative splicing results in multiple transcript variants encoding different isoforms.

Full Name

cyclin G associated kinase

Function

Associates with cyclin G and CDK5. Seems to act as an auxilin homolog that is involved in the uncoating of clathrin-coated vesicles by Hsc70 in non-neuronal cells. Expression oscillates slightly during the cell cycle, peaking at G1.

Biological Process

Cell cycle Source: UniProtKB-KW
Chaperone cofactor-dependent protein refolding Source: BHF-UCL
Clathrin coat disassembly Source: ParkinsonsUK-UCL
Clathrin-coated pit assembly Source: ParkinsonsUK-UCL
Clathrin-dependent endocytosis Source: ParkinsonsUK-UCL
Endoplasmic reticulum organization Source: ParkinsonsUK-UCL
Golgi organization Source: ParkinsonsUK-UCL
Golgi to lysosome transport Source: ParkinsonsUK-UCL
Negative regulation of neuron projection development Source: ParkinsonsUK-UCL
Protein localization to Golgi apparatus Source: ParkinsonsUK-UCL
Protein localization to plasma membrane Source: ParkinsonsUK-UCL
Receptor-mediated endocytosis Source: ParkinsonsUK-UCL
Synaptic vesicle uncoating Source: BHF-UCL

Cellular Location

Trans-Golgi network; Perinuclear region; Focal adhesion. Localizes to the perinuclear area and to the trans-Golgi network. Also seen on the plasma membrane, probably at focal adhesions.