Hexokinase-1 (HK1) ELISA Kit for Mouse

HK1: a glycolytic enzyme that catalyzes the reaction ATP + D-hexose = ADP + D-hexose 6-phosphate. The first and rate-limiting step in glycosis, a pathway that produces energy in the form of ATP from glucose. An allosteric enzyme inhibited by its product glucose-6-phosphate (Glc-6-P). HK-2 and its mitochondrial receptor (VDAC) play the most pivotal and direct roles in the ""Warburg effect"". Acts as a ""glucose sensor"" by trapping glucose inside the cell by catalyzing its phosphorylation to produce Glc-6-P. In vertebrates there are four major glucose-phosphorylating isoenzymes, designated hexokinase I, II, III and IV (glucokinase). Four human isoforms are produced by alternative splicing and alternative initiation. Isoform HK1 is markedly elevated in rapidly growing tumor cells exhibiting high glucose catabolic rates. HK1 is present in most tissues but is especially prominent in brain and kidney. Isoform HK1-SC is is an integral membrane protein detected in round spermatids, condensing spermatids and mature sperm where it is found in the head membranes, mitochondria of the midpiece and the fibrous sheath of the flagellum. Isoform HK1-SA is first expressed during meiosis and continues to be present in postmeiotic germ cells while isoform HK1-SB is present only in postmeiotic germ cells.

Protein type: Carbohydrate Metabolism - galactose; EC 2.7.1.1; Carbohydrate Metabolism - starch and sucrose; Kinase, other; Carbohydrate Metabolism - glycolysis and gluconeogenesis; Carbohydrate Metabolism - fructose and mannose; Carbohydrate Metabolism - amino sugar and nucleotide sugar; Mitochondrial

Cellular Component: caveola; cilium; cytosol; lipid raft; membrane; mitochondrial outer membrane; mitochondrion; protein complex

Molecular Function: ATP binding; catalytic activity; fructokinase activity; glucokinase activity; glucose binding; hexokinase activity; kinase activity; mannokinase activity; nucleotide binding; phosphotransferase activity, alcohol group as acceptor; protein binding; protein complex binding; protein homodimerization activity; protein kinase activity; transferase activity

Biological Process: carbohydrate metabolic process; carbohydrate phosphorylation; cell glucose homeostasis; glucose 6-phosphate metabolic process; glycolysis; metabolic process; negative regulation of apoptosis; peptidyl-serine phosphorylation; peptidyl-threonine phosphorylation; peptidyl-tyrosine phosphorylation; phosphorylation; protein amino acid autophosphorylation; protein amino acid phosphorylation; regulation of anion channel activity