| 货号 | AF7386-SP |
| 别名 | catechol O-methyltransferase; catechol-O-methyltransferase; EC 2.1.1.6 | 全称 | Catechol O-Methyltransferase |
| 反应种属 | Human |
| 应用 | Western Blot(0.1 µg/mL) |
| 目标/特异性 | Detects human COMT in direct ELISAs and Western blots. |
| 使用方法 | Western Blot: 0.1 µg/mL |
| 来源 | Sterile PBS to a final concentration of 0.2 mg/mL. |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 1312 (Human) |
| 纯化方式 | Antigen Affinity-purified |
| 免疫原 | E. coli-derived recombinant human COMT Gly52-Pro271 (Val158Met) Accession # P21964 |
| 生物活性 | Human |
| 标记 | Unconjugated |
| 溶解方法 | Sterile PBS to a final concentration of 0.2 mg/mL. |
| 背景 | COMT (Catechol-O-MethylTransferase) is a 29-30 kDa member of the COMT family of enzymes. It shares the same acronym with plant COMT, or caffeic acid 3-O-methyltransferase that is involved in phenylpropanoid synthesis. Mammalian COMT is widely expressed, and catalyzes the O-methylation of catecholamines, dopamine and estrogen. Human COMT is a 271 amino acid (aa) type II transmembrane (TM) protein. It contains a six aa cytoplasmic N-terminus, an 20 aa TM segment, and a 245 aa luminal/extracellular region that possesses a methyltransferase domain (aa 112-217). This TM form of COMT (termed MB-COMT) is generally associated with pre- and postsynaptic neurons plus glia, and is suggested to be very important in deactivating neurotransmitters, an activity that likely impacts cognition. There is also a 25-26 kDa COMT isoform (termed S-COMT) that utilizes an alternative start site at Met51. This isoform is cytoplasmic and generally found outside the CNS in cells such as mammary and intestinal epithelium, renal tubule epithelium, pancreatic beta -cells, monocytes and mast cells. S-COMT is believed to inactive toxic catechols (hydroxylated benzenes found in plant walls). MB-CORM exhibits high affinity:low capacity activity, while S-COMT shows low affinity:high capacity activity. Two additional alternative start sites have been reported. One starts at Met90, while a second possesses a start site 38 aa upstream of the MB-COMT start site. Over aa 52-271, human COMT shares 79% aa sequence identity with mouse COMT. |
| 运输条件 | Blue Ice |
| 存放说明 | 4℃ |
| 参考文献 |
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Detection of Human COMT by Western Blot. Western blot shows lysates of HepG2 human hepatocellular carcinoma cell line and human placenta tissue. PVDF membrane was probed with 0.1 µg/mL of Sheep Anti-Human COMT Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7386) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). Specific bands were detected for COMT at approximately 25 and 30 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1. |
