||Recombinant human COMT protein was expressed in E.coli and purified by using conventional chromatography techniques, 24.4 kDa (221 aa).
||Catechol-O-methyltrasferase (COMT) is an enzyme that catalyses the transfer of the methyl group of S-adenosylmethionine (SAM) into catechol substrates such as levodopa, dopamine, epinephrine, and norepinephirine in the presence of Mg2+. COMT appears to be located in the postsynaptic neuron and plays roles in the metabolism of catechol estrogens and the inactivation of catecholamine neurotransmitters though enzymatic degradation. COMT inhibitors prevent levodopa degradation, increase its availability and are used in the treatment of patients with Parkinson"s disease.
|Sequences of amino acids:
||MGDTKEQRIL NHVLQHAEPG NAQSVLEAID TYCEQKEWAM NVGDKKGKIV DAVIQEHQPS VLLELGAYCG YSAVRMARLL SPGARLITIE INPDCAAITQ RMVDFAGVKD KVTLVVGASQ DIIPQLKKKY DVDTLDMVFL DHWKDRYLPD TLLLEECGLL RKGTVLLADN VICPGAPDFL AHVRGSSCFE CTHYQSFLEY REVVDGLEKA IYKGPGSEAG P
||Liquid. In 20 mM Tris-HCl buffer (pH 8.0) containing 1 mM MgCl210% glycerol
||> 95% by SDS - PAGE
||1 mg/ml (determined by Bradford assay)
||< 1.0 EU per 1ug of protein (determined by LAL method)
||Can be stored at +4°C short term (1-2 weeks). For long term storage, aliquot and store at -20°C or -70°C. Avoid repeated freezing and thawing cycles.