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维生素B12 /Vitamin B12 {[allProObj[0].p_purity_real_show]}

货号:A884890 同义名: Cyanocobalamin;Cobalamin

Vitamin B12 is a water-soluble vitamin that is involved in the metabolism of cells as it is a cofactor in DNA synthesis.

Vitamin B12 化学结构 CAS号:68-19-9
Vitamin B12 化学结构
CAS号:68-19-9
Vitamin B12 3D分子结构
CAS号:68-19-9
Vitamin B12 化学结构 CAS号:68-19-9
Vitamin B12 3D分子结构 CAS号:68-19-9
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Vitamin B12 纯度/质量文件 产品仅供科研

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Vitamin B12 生物活性

描述 Vitamin B12 is a water soluble vitamin with a key role in the normal functioning of the brain and nervous system, and for the formation of blood. Vitamin B12 is a complex organometallic cofactor associated with three subfamilies of enzymes: the adenosylcobalamin-dependent isomerases, the methylcobalamin-dependent methyltransferases, and the dehalogenases[3]. Light excitation energy can promote covalent linkage of B12 to transcription factors with this linkage, affecting gene expression[4]. Vitamin B12 is synthesized in some bacteria but not in animals and plants. Intestinal absorption and subsequent plasma transport of vitamin B12 are mediated by specific vitamin B12-binding proteins and their receptors in mammals. Vitamin B12 taken up by the cells is enzymatically converted to coenzyme forms of vitamin B12, methyl- and adenosyl-vitamin B12, which function as coenzymes of methionine synthase (EC 2.1.13), involved in methionine biosynthesis, and methylmalonyl-CoA mutase (EC 5.4.99.2), involved in oxidation of odd-numbered fatty acids and amino acids (valine, isoleucine, and threonine), respectively[5].

Vitamin B12 参考文献

[1]Moore SJ, Lawrence AD, et al. Elucidation of the anaerobic pathway for the corrin component of cobalamin (vitamin B12). Proc Natl Acad Sci U S A. 2013 Sep 10;110(37):14906-11.

[2]Banerjee R, Ragsdale SW. The many faces of vitamin B12: catalysis by cobalamin-dependent enzymes. Annu Rev Biochem. 2003;72:209-47.

[3]Banerjee R, Ragsdale SW. The many faces of vitamin B12: catalysis by cobalamin-dependent enzymes. Annu Rev Biochem. 2003;72:209-247

[4]Cheng Z, Yamamoto H, Bauer CE. Cobalamin's (Vitamin B12) Surprising Function as a Photoreceptor. Trends Biochem Sci. 2016;41(8):647-650

[5]Watanabe F, Nakano Y. Nihon Rinsho. 1999;57(10):2205-2210

Vitamin B12 实验方案

计算器
存储液制备 1mg 5mg 10mg

1 mM

5 mM

10 mM

0.74mL

0.15mL

0.07mL

3.69mL

0.74mL

0.37mL

7.38mL

1.48mL

0.74mL

Vitamin B12 技术信息

CAS号68-19-9
分子式C63H88CoN14O14P
分子量 1355.365
别名 Cyanocobalamin;Cobalamin;NSC 80365;Docigram
运输蓝冰
存储条件

液体 -20°C:3-6个月-80°C:12个月

粉末 Inert atmosphere,2-8°C

溶解度

DMSO: 20 mg/mL(14.76 mM),配合低频超声,并水浴加热至45℃助溶,注意:DMSO长时间开封后,会吸水并导致溶解能力下降,请避免使用长期开封的DMSO

H2O: 6 mg/mL(4.43 mM),配合低频超声,并水浴加热至45℃助溶

动物实验配方
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