Biosynthesis of L-glutamate from L-aspartate or L-cysteine. Important regulator of levels of glutamate, the major excitatory neurotransmitter of the vertebrate central nervous system. Acts as a scavenger of glutamate in brain neuroprotection. The aspartate aminotransferase activity is involved in hepatic glucose synthesis during development and in adipocyte glyceroneogenesis. Using L-cysteine as substrate, regulates levels of mercaptopyruvate, an important source of hydrogen sulfide. Mercaptopyruvate is converted into H2S via the action of 3-mercaptopyruvate sulfurtransferase (3MST). Hydrogen sulfide is an important synaptic modulator and neuroprotectant in the brain.
Background References
1. D\'Aniello A et al. Amino acids and transaminases activity in ventricular CSF and in brain of normal and Alzheimer patients. Neurosci Lett 388:49-53 (2005).
2. Zlotnik A et al. Relationship between glutamate, GOT and GPT levels in maternal and fetal blood: a potential mechanism for fetal neuroprotection. Early Hum Dev 88:773-778 (2012).
Sequence Similarity
Belongs to the class-I pyridoxal-phosphate-dependent aminotransferase family.
Western blot analysis of GOT1 on different lysates with Rabbit anti-GOT1 antibody (ER1802-48) at 1/1,000 dilution.
Lane 1: HAP1-parental cell lysate Lane 2: HAP1-GOT1 KD cell lysate
Lysates/proteins at 10 µg/Lane.
Predicted band size: 43 kDa Observed band size: 43 kDa
Exposure time: 2 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (ER1802-48) at 1/1,000 dilution was used in K1803 at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
Immunohistochemical analysis of paraffin-embedded human liver tissue using anti-GOT1 antibody. Counter stained with hematoxylin.
Immunohistochemical analysis of paraffin-embedded human colon tissue using anti-GOT1 antibody. Counter stained with hematoxylin.
Immunohistochemical analysis of paraffin-embedded human heart tissue using anti-GOT1 antibody. Counter stained with hematoxylin.
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