Protein: Diacylglycerol kinase theta (DAG kinase theta) (DGKtheta) (EC 2.7.1.107) (EC 2.7.1.93) (Diglyceride kinase theta) (DGK-theta) (P52824)
Organism: Homo sapiens (Human)
Function: Diacylglycerol kinase that converts diacylglycerol/DAG into phosphatidic acid/phosphatidate/PA and regulates the respective levels of these two bioactive lipids. 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. Within the adrenocorticotropic hormone signaling pathway, produces phosphatidic acid which in turn activates NR5A1 and subsequent steroidogenic gene transcription. Also functions downstream of the nerve growth factor signaling pathway being specifically activated in the nucleus by the growth factor (By similarity). Through its diacylglycerol activity also regulates synaptic vesicle endocytosis.
Subcellular location: Cytoplasm {ECO:0000269|PubMed:15632189}. Cytoplasm, cytosol {ECO:0000250|UniProtKB:Q6P5E8}. Cell membrane {ECO:0000269|PubMed:10066731, ECO:0000269|PubMed:15632189}. Synapse {ECO:0000250|UniProtKB:Q6P5E8}. Cytoplasm, cytoskeleton {ECO:0000269|PubMed:10066731}. Nucleus {ECO:0000269|PubMed:12799190}. Nucleus speckle {ECO:0000269|PubMed:12799190}. Nucleus matrix {ECO:0000250|UniProtKB:D3ZEY4}. Note=Translocates to the plasma membrane in response to steroid hormone receptor stimulation (PubMed:15632189). Translocation to the plasma membrane is dependent on G-protein coupled receptor stimulation and subsequent activation of PRKCE and probably PRKCH (PubMed:15632189). Translocates to the nucleus in response to thrombin stimulation (Probable). Association with the nuclear matrix is regulated by nerve growth factor (By similarity). {ECO:0000250|UniProtKB:D3ZEY4, ECO:0000269|PubMed:15632189, ECO:0000305|PubMed:11309392}.
Interaction partners:
- Lipoprotein lipase
- Dihydroxyacetone phosphate acyltransferase
- Phospholipase D2
- Glycerol-3-phosphate dehydrogenase, mitochondrial
- Membrane-bound glycerophospholipid O-acyltransferase 2
- 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase epsilon-1
- Phospholipase D1
- 1-acyl-sn-glycerol-3-phosphate acyltransferase beta
- Diacylglycerol O-acyltransferase 1
- 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1
Sequence:
MAAAAEPGARAWLGGGSPRPGSPACSPVLGSGGRARPGPGPGPGPERAGVRAPGPAAAPGHSFRKVTLTKPTFCHLCSDFIWGLAGFLCDVCNFMSHEKCLKHVRIPCTSVAPSLVRVPVAHCFGPRGLHKRKFCAVCRKVLEAPALHCEVCELHLHPDCVPFACSDCRQCHQDGHQDHDTHHHHWREGNLPSGARCEVCRKTCGSSDVLAGVRCEWCGVQAHSLCSAALAPECGFGRLRSLVLPPACVRLLPGGFSKTQSFRIVEAAEPGEGGDGADGSAAVGPGRETQATPESGKQTLKIFDGDDAVRRSQFRLVTVSRLAGAEEVLEAALRAHHIPEDPGHLELCRLPPSSQACDAWAGGKAGSAVISEEGRSPGSGEATPEAWVIRALPRAQEVLKIYPGWLKVGVAYVSVRVTPKSTARSVVLEVLPLLGRQAESPESFQLVEVAMGCRHVQRTMLMDEQPLLDRLQDIRQMSVRQVSQTRFYVAESRDVAPHVSLFVGGLPPGLSPEEYSSLLHEAGATKATVVSVSHIYSSQGAVVLDVACFAEAERLYMLLKDMAVRGRLLTALVLPDLLHAKLPPDSCPLLVFVNPKSGGLKGRDLLCSFRKLLNPHQVFDLTNGGPLPGLHLFSQVPCFRVLVCGGDGTVGWVLGALEETRYRLACPEPSVAILPLGTGNDLGRVLRWGAGYSGEDPFSVLLSVDEADAVLMDRWTILLDAHEAGSAENDTADAEPPKIVQMSNYCGIGIDAELSLDFHQAREEEPGKFTSRLHNKGVYVRVGLQKISHSRSLHKQIRLQVERQEVELPSIEGLIFINIPSWGSGADLWGSDSDTRFEKPRMDDGLLEVVGVTGVVHMGQVQGGLRSGIRIAQGSYFRVTLLKATPVQVDGEPWVQAPGHMIISAAGPKVHMLRKAKQKPRRAGTTRDARADAAPAPESDPR