Aspartate aminotransferase, cytoplasmic (P17174)

Uniprot ID P17174
Protein Name Aspartate aminotransferase, cytoplasmic
Gene Name GOT1
Species Homo sapiens (Human)
Signal peptide(a) N Secretome P(b) 0.6
Function 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 H(2)S via the action of 3-mercaptopyruvate sulfurtransferase (3MST). Hydrogen sulfide is an important synaptic modulator and neuroprotectant in the brain. .
GO - Molecular function
  • carboxylic acid binding : IEA:Ensembl
  • L-aspartate : IDA:UniProtKB
  • L-cysteine : ISS:UniProtKB
  • phosphatidylserine decarboxylase activity : IEA:Ensembl
  • pyridoxal phosphate binding : IEA:InterPro
GO - Biological process
  • 2-oxoglutarate metabolic process : ISS:UniProtKB
  • aspartate biosynthetic process : IBA:GO_Central
  • aspartate catabolic process : IDA:UniProtKB
  • aspartate metabolic process : ISS:UniProtKB
  • cellular amino acid biosynthetic process : TAS:Reactome
  • cellular response to insulin stimulus : IEP:UniProtKB
  • cellular response to mechanical stimulus : IEA:Ensembl
  • fatty acid homeostasis : IEA:Ensembl
  • gluconeogenesis : TAS:Reactome
  • glutamate catabolic process to 2-oxoglutarate : IEA:Ensembl
  • glutamate catabolic process to aspartate : IEA:Ensembl
  • glutamate metabolic process : ISS:UniProtKB
  • glycerol biosynthetic process : ISS:UniProtKB
  • negative regulation of collagen biosynthetic process : IEA:Ensembl
  • negative regulation of cytosolic calcium ion concentration : IEA:Ensembl
  • negative regulation of mitochondrial depolarization : IEA:Ensembl
  • Notch signaling pathway : IEA:Ensembl
  • oxaloacetate metabolic process : IEA:Ensembl
  • positive regulation of transforming growth factor beta receptor signaling pathway : IEA:Ensembl
  • response to cadmium ion : IEA:Ensembl
  • response to carbohydrate : IEA:Ensembl
  • response to glucocorticoid : IEP:UniProtKB
  • response to immobilization stress : IEA:Ensembl
  • response to transition metal nanoparticle : IEA:Ensembl
  • transdifferentiation : IEA:Ensembl
Back
(a) The Signal peptide D-score cutoff for "YES"(having signal peptide) is 0.45.
(b) Non-classically secreted proteins should obtain an NN-score(Neural Networks score) exceeding the normal threshold of 0.5, but not at the same time be predicted to contain a signal peptide.