Lipid kinase that can phosphorylate both monoacylglycerol and diacylglycerol to form lysophosphatidic acid (LPA) and phosphatidic acid (PA), respectively (PubMed:15939762). Does not phosphorylate sphingosine (PubMed:15939762). Phosphorylates ceramide (By similarity). Phosphorylates 1,2-dioleoylglycerol more rapidly than 2,3-dioleoylglycerol (By similarity). Independently of its lipid kinase activity, acts as a component of the TIM22 complex (PubMed:28712724, PubMed:28712726). The TIM22 complex mediates the import and insertion of multi-pass transmembrane proteins into the mitochondrial inner membrane by forming a twin-pore translocase that uses the membrane potential as the external driving force (PubMed:28712724, PubMed:28712726). In the TIM22 complex, required for the import of a subset of metabolite carriers into mitochondria, such as ANT1/SLC25A4 and SLC25A24, while it is not required for the import of TIMM23 (PubMed:28712724). Overexpression increases the formation and secretion of LPA, resulting in transactivation of EGFR and activation of the downstream MAPK signaling pathway, leading to increased cell growth (PubMed:15939762). a monoacylglycerol + ATP = ADP + H(+) + monoacyl-sn-glycero-3-phosphate a 1,2-diacyl-sn-glycerol + ATP = a 1,2-diacyl-sn-glycero-3-phosphate + ADP + H(+) an N-acylsphing-4-enine + ATP = ADP + an N-acylsphing-4-enine 1-phosphate + H(+) 1-(9Z-octadecenoyl)-sn-glycerol + ATP = 1-(9Z-octadecenoyl)-sn-glycero-3-phosphate + ADP + H(+) 1,2-di-(9Z-octadecenoyl)-sn-glycerol + ATP = 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphate + ADP + H(+) a 1-acyl-sn-glycerol + ATP = a 1-acyl-sn-glycero-3-phosphate + ADP + H(+) 1-hexadecanoyl-sn-glycerol + ATP = 1-hexadecanoyl-sn-glycero-3-phosphate + ADP + H(+) 2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-glycerol + ATP = 2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphate + ADP + H(+) 1-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycerol + ATP = 1-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphate + ADP + H(+) ATP + N-(hexanoyl)sphing-4-enine = ADP + H(+) + N-hexanoylsphing-4-enine 1-phosphate Lipid metabolism; glycerolipid metabolism. Component of the TIM22 complex, which core is composed of TIMM22, associated with TIMM10 (TIMM10A and/or TIMM10B), TIMM9, AGK and TIMM29 (PubMed:28712724, PubMed:28712726). Localizes in the mitochondrion intermembrane space, where it associates with the inner membrane (PubMed:28712724). It is unclear whether the N-terminal hydrophobic region forms a transmembrane region or associates with the membrane without crossing it (PubMed:28712724, PubMed:28712726). Highly expressed in muscle, heart, kidney and brain. Overexpressed in prostate cancer, suggesting that it may play a role in initiation and progression of prostate cancer, processes in which lysophosphatidic acid (LPA) plays key roles. The disease is caused by variants affecting the gene represented in this entry. The TIM22 complex and import of proteins into mitochondrion are affected in patients suffering of MTDPS10 (PubMed:28712726). The disease is caused by variants affecting the gene represented in this entry. Belongs to the AGK family. According to a report, the N-terminal hydrophobic region forms a transmembrane region that crosses the mitochondrion inner membrane (PubMed:28712726). According to another report, the N-terminal hydrophobic region associates with the membrane without crossing it (PubMed:28712724).