DGKH

This gene encodes a member of the diacylglycerol kinase (DGK) enzyme family. Members of this family are involved in regulating intracellular concentrations of diacylglycerol and phosphatidic acid. Variation in this gene has been associated with bipolar disorder. Alternatively spliced transcript variants have been identified. [provided by RefSeq, Jul 2014]

Full Name

Diacylglycerol Kinase Eta

Function

Diacylglycerol kinase that converts diacylglycerol/DAG into phosphatidic acid/phosphatidate/PA and regulates the respective levels of these two bioactive lipids (PubMed:12810723, PubMed:23949095).

Thereby, acts as a central switch between the signaling pathways activated by these second messengers with different cellular targets and opposite effects in numerous biological processes (Probable) (PubMed:12810723, PubMed:23949095).

Plays a key role in promoting cell growth (PubMed:19710016).

Activates the Ras/B-Raf/C-Raf/MEK/ERK signaling pathway induced by EGF (PubMed:19710016).

Regulates the recruitment of RAF1 and BRAF from cytoplasm to membranes and their heterodimerization (PubMed:19710016).

Biological Process

Diacylglycerol metabolic process Source: UniProtKB
Intracellular signal transduction Source: GO_Central
Lipid phosphorylation Source: UniProtKB
Negative regulation of catalytic activity Source: UniProtKB
Phosphatidic acid biosynthetic process Source: UniProtKB
Phosphatidic acid metabolic process Source: BHF-UCL
Platelet activation Source: Reactome
Protein kinase C-activating G protein-coupled receptor signaling pathway Source: UniProtKB

Cellular Location

Cell membrane; Cytoplasm. Translocated from the cytoplasm to endosomes in response to stress stimuli (PubMed:12810723). Isoform 2 is rapidly relocated back to the cytoplasm upon removal of stress stimuli, whereas isoform 1 exhibits sustained endosomal association (PubMed:12810723). Translocates from the cytoplasm to the cell membrane in the presence of active GTP-bound form of HRAS (PubMed:19710016).

PTM

Phosphorylated. Phosphorylation does not inhibit catalytic activity.