L-盐酸半胱氨酸（用于细胞培养） 7048-04-6

L-盐酸半胱氨酸（用于细胞培养） 7048-04-6 L-盐酸半胱氨酸（用于细胞培养） 7048-04-6
产品名称：L-盐酸半胱氨酸 7048-04-6
产品编号：A2257
中文别称 L-盐酸半胱氨酸；L-盐酸半胱氨酸一水物;L-半胱氨酸盐酸盐一水物;L-丰胱胺酸盐酸盐一水物;（R）-2-氨基-3-巯基丙.酸盐酸盐;L（+）-β-盐酸硫氢代丙氨酸;L(+)-盐酸半膀胱氨基酸;L-半胱一水;L-一水半胱；L-半胱氨酸盐酸盐一水物
英文别称 L-Cysteine hydrochloride monohydrate
CAS 7048-04-6
分子式 C3H7NO2S·HCl·H2O
分子量 175.6
储存条件 RT
纯度 ≥99%
有效期 2年
溶解性 500 mg/mlWater
性状 白色结晶粉末
包装 瓶
规格 25g 500g
半胱氨酸是硫的主要生物来源，也是两种常见的含硫氨基酸之一。半胱氨酸的生物合成是通过半胱氨酸和丝氨酸通过胱硫醚合酶的初始缩合形成胱硫醚，胱硫醚又被胱硫醚酶切割产生半胱氨酸和a-酮丁酸。半胱氨酸可以通过硫醇侧链残基的氧化容易地二聚化形成胱氨酸，从而形成二硫键共价键。蛋白质中半胱氨酸残基之间形成这种胱氨酸连接是蛋白质三维结构稳定的重要组成部分。
据报道，对正常和恶性细胞中半胱氨酸和胱氨酸水平与g-胱硫醚水平以及肿瘤对L-半胱氨酸和胱胺酸耗竭的敏感性的关系进行了研究。研究了人神经元细胞系对半胱氨酸及其代谢产物的毒性。半胱氨酸可以抑制卵磷脂胆固醇酰基转移酶等酶的活性。
已经报道了在脉冲追逐实验中使用半胱氨酸来研究诱导型启动子的蛋白质表达的方案。
准备说明：
本产品可溶于水（50 mg/ml），形成澄清无色的溶液。
储存/稳定性：
半胱氨酸的储备溶液在酸性pH下相对稳定，尤其是在脱气溶液中。半胱氨酸的水溶液在空气中容易氧化，在中性或碱性pH下产生胱氨酸。
L-cysteine hydrochloride (for cell culture) 7048-04-6 L-cysteine hydrochloride (for cell culture) 7048-04-6

Product name: L-Cysteine hydrochloride 7048-04-6

Product number: A2257

Also known as L-cysteine hydrochloride in Chinese; L-Cysteine hydrochloride monohydrate; L-cysteine hydrochloride monohydrate; L-cysteine hydrochloride monohydrate; (R) 2-amino-3-mercaptopropanoic acid hydrochloride; L (+)- β- Sulfohydroalanine hydrochloride; L (+) - Hydroch.loric acid semi bladder amino acid; L-cysteine monohydrate; L-cysteine monohydrate; L-Cysteine hydrochloride monohydrate

Also known as L-Cysteine hydrochloride monohydrate in English

CAS 7048-04-6

Molecular formula C3H7NO2S · HCl · H2O

Molecular weight 175.6

Storage conditions RT

Purity ≥ 99%

Validity period of 2 years

Solubility 500 mg/ml Water

Appearance: White crystalline powder

Packaging bottle

Specification 25g 500g

Cysteine is the main biological source of sulfur and one of the two common sulfur-containing amino acids. The biosynthesis of cysteine is achieved through the initial condensation of cysteine and serine to form cysteine sulfide, which is then cleaved by cysteine synthase to produce cysteine and a-ketobutyrate. Cysteine can easily dimerize to form cysteine through the oxidation of thiol side chain residues, thereby forming disulfide covalent bonds. The formation of cysteine connections between cysteine residues in proteins is an important component of the three-dimensional structural stability of proteins.

According to reports, the relationship between cysteine and cysteine levels in normal and malignant cells and g-cysteine levels, as well as the sensitivity of tumors to L-cysteine and cysteine depletion, has been studied. Studied the toxicity of human neuronal cell lines to cysteine and its metabolites. Cysteine can inhibit the activity of enzymes such as phospholipid cholesterol acyltransferase.

A protocol for studying protein expression of inducible promoters using cysteine in pulse pursuit experiments has been reported.

Preparation instructions:

This product is soluble in water (50 mg/ml), forming a clear and colorless solution.

Storage/Stability:

The reserve solution of cysteine is relatively stable at acidic pH, especially in degassed solutions. Cysteine aqueous solutions are prone to oxidation in air, producing cysteine at neutral or alkaline pH.

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