TransaminasePyridoxaminePhosphoserine transaminase: Phosphoserine transaminase (, PSAT, phosphoserine aminotransferase, 3-phosphoserine aminotransferase, hydroxypyruvic phosphate-glutamic transaminase, L-phosphoserine aminotransferase, phosphohydroxypyruvate transaminase, phosphohydroxypyruvic-glutamic transaminase, 3-O-phospho-L-serine:2-oxoglutarate aminotransferase, SerC, PdxC, 3PHP transaminase) is an enzyme with system name O-phospho-L-serine:2-oxoglutarate aminotransferase. This enzyme catalyses the following chemical reactionLiver sinusoid: A liver sinusoid is a type of sinusoidal blood vessel (with fenestrated, discontinuous endothelium) that serves as a location for the oxygen-rich blood from the hepatic artery and the nutrient-rich blood from the portal vein.SIU SOM Histology GIAlanine transaminase: Alanine transaminase (ALT) is a transaminase enzyme (). It is also called alanine aminotransferase (ALAT) and was formerly called serum glutamate-pyruvate transaminase (SGPT) or serum glutamic-pyruvic transaminase (SGPT).Cys/Met metabolism PLP-dependent enzyme family: In molecular biology, the Cys/Met metabolism PLP-dependent enzyme family is a family of proteins including enzymes involved in cysteine and methionine metabolism which use PLP (pyridoxal-5'-phosphate) as a cofactor.Aspartate carbamoyltransferase: Aspartate carbamoyltransferase (also known as aspartate transcarbamoylase or ATCase) catalyzes the first step in the pyrimidine biosynthetic pathway ().Futile cycle: A futile cycle, also known as a substrate cycle, occurs when two metabolic pathways run simultaneously in opposite directions and have no overall effect other than to dissipate energy in the form of heat. For example, if glycolysis and gluconeogenesis were to be active at the same time, glucose would be converted to pyruvate by glycolysis and then converted back to glucose by gluconeogenesis, with an overall consumption of ATP.Ivar Asbjørn Følling: Ivar Asbjørn Følling (23 August 1888 – 24 January 1973) was a Norwegian physician and biochemist who first described the disease named after him—Følling's disease—which is better known outside of Norway as phenylketonuria or, for short, PKU. He was born in Kvam, Steinkjer.Group II pyridoxal-dependent decarboxylases: In molecular biology, group II pyridoxal-dependent decarboxylases are family of enzymes including aromatic-L-amino-acid decarboxylase (L-dopa decarboxylase or tryptophan decarboxylase) , which catalyses the decarboxylation of tryptophan to tryptamine, tyrosine decarboxylase , which converts tyrosine into tyramine and histidine decarboxylase , which catalyses the decarboxylation of histidine to histamine.Glyoxylic acidKynurenic acidGABA transaminase inhibitor: A GABA transaminase inhibitor is an enzyme inhibitor that acts upon GABA transaminase.LeucineLiver biopsyProtein primary structure: The primary structure of a peptide or protein is the linear sequence of its amino acid structural units, and partly comprises its overall biomolecular structure. By convention, the primary structure of a protein is reported starting from the amino-terminal (N) end to the carboxyl-terminal (C) end.