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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
核苷类药物是现代临床医学上用于治疗病毒感染性、恶性肿瘤、AIDS 等疾病的一类重要药物。现如今,在使用的抗病毒药物中有近 50% 是核苷类药物。
胸苷磷酸化酶(thymidine phosphorylase,TP或TYMP)又称为胸腺嘧啶核苷磷酸化酶,或胸苷:正磷酸脱氧-D-核糖基转移酶(Thymidine: orthophosphate deoxy-D-ribosyltransferase)广泛存在于原核及真核生物细胞中,是生物体内嘧啶核苷补救途径中关键酶,也是体外酶法合成核苷类物质的重要酶。
目前该酶已经被证实有 3 种身份。第一种身份是作为 TYMP,主要功能有:①参与嘧啶补救合成途径,通过去磷酸化作用,将胸腺嘧啶核苷酸转化为胸腺嘧啶和 2-脱氧核糖-D 核糖-1-磷酸,从而维持人体内胸腺嘧啶核苷水平的动态平衡;②参与嘧啶代谢药 5-氟尿嘧啶在人体内的代谢过程,催化 5-氟尿嘧啶与 1-磷酸-2-脱氧核糖反应,产生 5-氟-2’-脱氧尿苷,阻断胸腺嘧啶脱氧核苷的生成,杀灭增殖周期S 期的细胞,从而发挥抗癌活性。第二种身份是血小板衍生内皮生长因子(PD-ECGF),经研究证实该生长因子在体外可刺激内皮细胞趋化和生长,在体内可促进血管生成。第三种身份是胶质抑制素,已被证实TYMP和PD-ECGF 为同一物质。目前 TYMP 的相关研究主要集中在肿瘤治疗效果的判断及预后方面。
基本信息:
酶学编号: EC 2.4.2.4
来源:微生物重组蛋白
等电点:5.51
分子量: 48 kDa(SDS-PAGE检测)
纯度:≥90%(SDS-PAGE检测)
Nucleoside drugs are an important class of medicines used in modern clinical practice for the treatment of viral infections, malignant tumors, AIDS and other diseases. Currently, nearly 50% of antiviral drugs in use are nucleoside drugs. Thymidine phosphorylase (TP or TYMP), also known as thymidine orthophosphate deoxy-D-ribosyltransferase, is widely present in prokaryotic and eukaryotic cells. It is a key enzyme in the pyrimidine nucleoside salvage pathway in organisms and also an important enzyme for the enzymatic synthesis of nucleoside substances in vitro.
At present, three functions of this enzyme have been confirmed.The first function is as TYMP, with main roles including:① Participating in the pyrimidine salvage synthesis pathway, converting thymidine nucleotides into thymine and 2-deoxyribose-D-ribose-1-phosphate through dephosphorylation, thereby maintaining the dynamic balance of thymidine levels in the human body;② Participating in the metabolic process of the pyrimidine antimetabolite drug 5-fluorouracil in the human body, catalyzing the reaction between 5-fluorouracil and 2-deoxyribose 1-phosphate to produce 5-fluoro-2'-deoxyuridine, blocking the formation of thymidine, killing cells in the S phase of the proliferation cycle, and thus exerting anticancer activity. The second function is as platelet-derived endothelial cell growth factor (PD-ECGF). Studies have confirmed that this growth factor can stimulate endothelial cell chemotaxis and growth in vitro and promote angiogenesis in vivo. The third function is as gliostatin. It has been verified that TYMP and PD-ECGF are the same substance. Current research on TYMP mainly focuses on the evaluation of tumor therapeutic efficacy and prognosis.
Basic Information
Enzyme Commission Number: EC 2.4.2.4
Source: Recombinant protein
Isoelectric Point: 5.51
Molecular Weight: 48 kDa (determined by SDS-PAGE)
Purity: ≥ 90% (determined by SDS-PAGE)
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | T1441634 | |
| 分析证书 | T1441634 | |
| 分析证书 | T1441634 |
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