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- 详细信息
- 询价记录
- 文献和实验
- 技术资料
- 保存条件:
-20℃
- 保质期:
12个月
- 英文名:
Recombinant Growth Hormone Releasing Hormone (GHRH)
- 库存:
100
- 供应商:
上海沪震
FOR IN VITRO AND RESEARCH USE ONLY, NOT FOR USE IN CLINICAL DIAGNOSTIC PROCEDURES!
Organism species Bos taurus; Bovine (Cattle)
Product No. RPA438Bo01
Source Prokaryotic expression
Host E.coli
Purity > 95%
UOM 50ug
Predicted Molecular Mass n/a
Applications SDS-PAGE; WB; ELISA; IP.
Endotoxin Level <1.0EU per 1µg (determined by the LAL method)
Residues n/a
Formulation Supplied as lyophilized form in PBS, pH7.4, containing 5% trehalose, 0.01% sarcosyl.
促生长激素释放激素(GHRH)重组蛋白USAGE
Reconstitute in sterile PBS, pH7.2-pH7.4.
STORAGE AND STABILITY
Storage: Avoid repeated freeze/thaw cycles. Store at 2-8oC for one month. Aliquot and store at -80oC for 12 months.
Stability Test: The thermal stability is described by the loss rate of the target protein. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37oC for 48h, and no obvious degradation and precipitation were observed. (Referring from China Biological Products Standard, which was calculated by the Arrhenius equation.) The loss of this protein is less than 5% within the expiration date under appropriate storage 促生长激素释放激素(GHRH)重组蛋白condition.
About the MARKER (complimentary)
Effective Size Range: 10kDa to 70kDa.
Protein bands: 10kDa, 14kDa, 18kDa, 22kDa, 26kDa, 33kDa, 44kDa and 70kDa.
Double intensity bands: The 26kDa, 18kDa, 10kDa bands are at double intensity to make location and size approximation of proteins of interest quick and easy.
促生长激素释放激素(GHRH)重组蛋白Ready-to-use: No need to heat, dilute or add reducing agents before use.
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文献和实验生长素释放激素(growth hormone releasing hormone,GHRHA)由于下丘脑中GHRH的含量极少,致化学提取困难。1982年有人首先从一例患胰腺癌伴发肢端肥大症患者的癌组织中提取并纯化出一种44个氨基酸的肽,它在整体和离体实验均显示有促GH分泌的生物活性。1983年,从大鼠下丘脑中提纯了GHRH43 ,这种四十三肽对人的腺垂体也有很强有促GH分泌作用。近年用DNA重组扶得到GHRH40 和GHRH44 的基因,这些基因已被克隆化,并非酵母系统中传代和表达
一、生长激素及胰岛素样生长因子 (一)生长激素的化学、作用及分泌调节 生长激素(growth hormone, GH;somatotropin, STH)为含191个氨基酸残基、分子量约21.5 kD的单链多肽激素,由腺垂体嗜酸细胞分泌。GH最重要的生理作用是促进骨骺软骨细胞DNA、RNA合成,软骨细胞分裂增殖,蛋白粘多糖合成活跃,骨骺板增厚,身材长高。 GH的分泌主要受下丘脑释放的GHRH
,起着换能神经元的作用,从而以下丘脑为枢纽,把神经调节与体液调节紧密联系起来。所以,下丘脑与垂体一起组成下丘脑-垂体功能单位(图11-5)。 凡是能分泌神通肽或肽类激素的神经分泌细胞称为肽能神经元。下丘脑的肽能神经元主要丰硕盱视上核、室旁核与促垂体核团。促垂体区核团位于下丘脑的内侧基底部,主要包括正中隆起、弓状核、腹内侧核、视交叉上核以及室周核等,多属于小细胞肽能神经元,其轴突投射到正中隆起,轴突末梢与垂体门脉系统的第一级毛细血管风接触,可将下丘脑调节肽释放进入门脉系统,从而调节垂体的分泌活动
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