Probable D-lactate dehydrogenase, mitochondrial; Involved in D-lactate, but not L-lactate catabolic process. Belongs to the FAD-binding oxidoreductase/transferase type 4 family.

S-formylglutathione hydrolase; Serine hydrolase involved in the detoxification of formaldehyde.

Carboxylesterase 5A; Involved in the detoxification of xenobiotics and in the activation of ester and amide prodrugs.

Acid-sensing ion channel 4; Probable cation channel with high affinity for sodium. In vitro, has no proton-gated channel activity.

Cocaine esterase; Involved in the detoxification of xenobiotics and in the activation of ester and amide prodrugs. Shows high catalytic efficiency for hydrolysis of cocaine, 4-methylumbelliferyl acetate, heroin and 6-monoacetylmorphine. Hydrolyzes aspirin, substrates with large alcohol group and small acyl group and endogenous lipids such as triacylglycerol. Belongs to the type-B carboxylesterase/lipase family.

Glycerol-3-phosphate phosphatase; Glycerol-3-phosphate phosphatase hydrolyzing glycerol-3- phosphate into glycerol. Thereby, regulates the cellular levels of glycerol-3-phosphate a metabolic intermediate of glucose, lipid and energy metabolism. Was also shown to have a 2-phosphoglycolate phosphatase activity and a tyrosine-protein phosphatase activity. However, their physiological relevance is unclear. In vitro, has also a phosphatase activity toward ADP, ATP, GDP and GTP (By similarity).

Probable E3 ubiquitin-protein ligase makorin-2; E3 ubiquitin ligase catalyzing the covalent attachment of ubiquitin moieties onto substrate proteins.

Carboxylesterase 3; Involved in the detoxification of xenobiotics and in the activation of ester and amide prodrugs. Shows low catalytic efficiency for hydrolysis of CPT-11 (7-ethyl-10-[4-(1-piperidino)-1-piperidino]- carbonyloxycamptothecin), a prodrug for camptothecin used in cancer therapeutics.

E3 ubiquitin-protein ligase makorin-1; E3 ubiquitin ligase catalyzing the covalent attachment of ubiquitin moieties onto substrate proteins. These substrates include FILIP1, p53/TP53, CDKN1A and TERT. Keeps cells alive by suppressing p53/TP53 under normal conditions, but stimulates apoptosis by repressing CDKN1A under stress conditions. Acts as a negative regulator of telomerase. Has negative and positive effects on RNA polymerase II- dependent transcription.