Product Name | NeurotensinpE - LYENKPRRPYIL |
Size | 1 mg |
Catalog # | AS-62677 |
US$ | $85 |
Purity | % Peak Area By HPLC ≥ 95% |
This 13 amino acid peptide was first isolated from bovine hypothalamus and was named from its neuronal localization. It was detected in the central nervous system (CNS) and peripheral tissues mainly in the gastrointestinal tract. This bioactive form of neurotensin post-translationally modified at a Glu residue was isolated from porcine intestine. In the CNS, neurotensin has dual function of neuromodulator of dopamine transmission and of anterior pituitary hormone secretion. It also shows potent hypothermic and analgesic effects in the brain. Neurotensin has been implicated in the pathophysiology of schizophrenia, Huntington, and Parkinson diseases. | |
Detailed Information | Material Safety Data Sheets (MSDS) |
Storage | -20°C |
References | Fälth, M. et al. Molec. Cell. Proteom. 5, 998 ( 2006); Huang, K-F. et al. PNAS 102, 13117 (2005); Eriste, E. et al. J. Biol. Chem. 280, 35089 (2005). |
Molecular Weight | 1672.92 |
pE-LYENKPRRPYIL | |
Sequence(Three-Letter Code) | Pyr - Leu - Tyr - Glu - Asn - Lys - Pro - Arg - Arg - Pro - Tyr - Ile - Leu - OH |
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根据组成不同,可分为两种,弱酸及其对应的强碱弱酸盐,弱碱及其对应的强酸弱碱盐。
因为HF可以和NaOH反应生成NaF和水,当NaOH反应完之后,NaF就可以与HF组成缓冲溶液,所以说可以直接使用NaOH和HF来配制缓冲溶液。
这也是一般配制缓冲溶液的方法,也就是用强碱和弱酸(或者强酸和弱碱)来配制缓冲溶液。
(2)酸和盐浓度等比例也增减时,溶液的pH值不便。
(3)酸和盐浓度相等时,缓冲液的缓冲效率为最高,比例相差越大,缓冲效率越低,一般地说缓冲液有效缓冲范围为PK±1pH
浙江大学奚振宇、徐又一、朱利平等2009年在journal of membrane science(中文翻译为《膜科学杂志》)发表的一篇论文,其中探讨了缓冲溶液的pH值对聚乙烯-多巴胺复合膜亲水性的影响,发现缓冲溶液的pH值为8.5时制备的复合膜亲水性最强。
通过大量的实验,研究人员发现,pH值为8.5时制备的多巴胺复合膜性能最优。这个是通过大量的实验总结得到的结论。
2.尿素:有膜蛋白的损失
3.RIPA:用于磷酸化蛋白的温和裂解,不破坏磷酸基团
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