1. 重组蛋白
  2. Enzymes & Regulators
  3. Oxidoreductases (EC 1)
  4. CYP3A4 蛋白, Human (His)

CYP3A4 蛋白, Human (His)

目录号: HY-P74210
产品使用指南

CYP3A4蛋白由CYP3A4基因编码,是药物代谢以及胆固醇、类固醇和脂质合成的关键酶。它定位于内质网,由糖皮质激素和某些药物诱导。CYP3A4 蛋白, Human (His) 是重组的 CYP3A4 蛋白,由 E. coli 表达,带有 N-His 标签。CYP3A4 蛋白, Human (His) 全长 502 个氨基酸,分子量约为 ~59.2 kDa。

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描述

The CYP3A4 protein, encoded by the CYP3A4 gene, is a key enzyme in drug metabolism and the synthesis of cholesterol, steroids, and lipids. It localizes to the endoplasmic reticulum and is induced by glucocorticoids and certain drugs. CYP3A4 Protein, Human (His) is the recombinant human-derived CYP3A4 protein, expressed by E. coli , with N-His labeled tag. The total length of CYP3A4 Protein, Human (His) is 502 a.a., with molecular weight of ~59.2 kDa.

研究背景

CYP3A4 基因编码细胞色素 P450 酶超家族的成员,这些酶是单加氧酶,在药物代谢以及胆固醇、类固醇和脂质的合成中发挥着至关重要的作用。该酶定位于内质网,其表达由糖皮质激素和某些药物诱导。CYP3A4 在目前使用的大约一半药物的代谢中发挥着关键作用,包括对乙酰氨基酚、可待因、环孢菌素 A、地西泮、红霉素和氯喹等物质。此外,该酶还参与类固醇和致癌物的代谢。该基因位于染色体 7q21.1 上的细胞色素 P450 基因簇中。以前,人们认为存在另一个 CYP3A 基因 CYP3A3,但现在认为它是 CYP3A4 的转录变体。已鉴定出多种可变剪接转录物变体,编码该酶的不同亚型。CYP3A4 在肝脏 (RPKM 476.5)、小肠 (RPKM 282.8) 和其他组织中观察到偏向表达,是药物代谢和整体异生素加工的关键因素。

种属

Human

表达系统

E. coli

标签

N-His

蛋白编号

NP_059488.2 (A2-A503)

基因 ID
蛋白结构
N-term
His
CYP3A4 (A2-A503)
Accession # NP_059488.2
C-term
同用名
Cytochrome P450 3A4; CYPIIIA3; CYP3A4; CYP3A3
分子量

Approximately 59.2 kDa

纯度

Greater than 90% as determined by reducing SDS-PAGE.

内毒素含量

<1 EU/μg, determined by LAL method.

文件资料

CYP3A4 Protein, Human (His) 相关分类

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

浓度 (start) × 体积 (start) = 浓度 (final) × 体积 (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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