Anti-COMT Antibody Picoband® (monoclonal, 15C10) Fluoro550 Conjugated

Catechol O-methyltransferase, also called COMT, is one of the major mammalian enzymes involved in the metabolic degradation of catecholamines. This gene is mapped to 22q11.21. Catechol-O-methyltransferase catalyzes the transfer of a methyl group from S-adenosylmethionine to catecholamines, including the neurotransmitters dopamine, epinephrine, and norepinephrine. This O-methylation results in one of the major degradative pathways of the catecholamine transmitters. In addition to its role in the metabolism of endogenous substances, COMT is important in the metabolism of catechol drugs used in the treatment of hypertension, asthma, and Parkinson disease. COMT is found in two forms in tissues, a soluble form (S-COMT) and a membrane-bound form (MB-COMT) . The differences between S-COMT and MB-COMT reside within the N-termini.

E.coli-derived human COMT recombinant protein (Position: G52-P271) . Human COMT shares 81.9% and 81% amino acid (aa) sequence identity with mouse and rat COMT, respectively.

Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol.

1. Baker, K., Baldeweg, T., Sivagnanasundaram, S., Scambler, P., Skuse, D. COMT val108/158met modifies mismatch negativity and cognitive function in 22q11 deletion syndrome. Biol. Psychiat. 58: 23-31, 2005. 2. Lee, S.-G., Joo, Y., Kim, B., Chung, S., Kim, H.-L., Lee, I., Choi, B., Kim, C., Song, K.Association of Ala72Ser polymorphism with COMT enzyme activity and the risk of schizophrenia in Koreans. Hum. Genet. 116: 319-328, 2005.