| BAY-u 9773Antagonist of CysLT1/CysLT2 receptors |
Sample solution is provided at 25 µL, 10mM.
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| Cas No. | 154978-38-8 | SDF | Download SDF |
| Synonyms | N/A | ||
| Chemical Name | 4-(((4S,5R,6E,8E,10E,13E)-1-carboxy-4-hydroxynonadeca-6,8,10,13-tetraen-5-yl)thio)benzoic acid | ||
| Canonical SMILES | O[C@H]([C@@H](/C=C/C=C/C=C/C/C=C/CCCCC)SC1=CC=C(C(O)=O)C=C1)CCCC(O)=O | ||
| Formula | C27H36O5S | M.Wt | 472.64 |
| Solubility | Soluble in ethanol | Storage | Store at -80°C |
| Physical Appearance | A solution in ethanol | Shipping Condition | Evaluation sample solution : ship with blue ice.All other available size:ship with RT , or blue ice upon request |
| General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. | ||
BAY-u9773, an antagonist of cysteinyl leukotriene (Cys-LT) receptor, which have equal affinity towards CysLT1 and CysLT2 receptors.
The Cys-LTs are a family of potent bioactive lipids, acting through two distinct G protein-coupled receptors named the CysLT1 and CysLT2 receptors.
To determine the profile of BAY-u9773 as a Cys-LT receptor antagonist, the effect of this component on different smooth muscle preparations was investigated. The result showed that BAY u9773 antagonised "typical" cysteinyl-leukotriene receptors and inhibited bronchial and venous muscle contractions in the human muscle preparations [1].
BAY-u9773 was also extensively used in animal model to study the function of CysLT1 and CysLT2 receptors. For instance, BAY-u9773 treatment inhibited the infiltration of eosinophil in BAL Fluid in a model of OVA-induced airway hypersensitivity and inflammation in guinea pigs [2]. In addition, this components was shown to act as competitive antagonist towards LTC4 and LTE4 receptors and results in contractions in trachea of guinea pig models [3].
References:1. Tudhope SR, Cuthbert NJ, Abram TS, Jennings MA, Maxey RJ, Thompson AM, et al. BAY u9773, a novel antagonist of cysteinyl-leukotrienes with activity against two receptor subtypes. Eur J Pharmacol 1994,264:317-323.2. Muraki M, Imbe S, Santo H, Sato R, Sano H, Iwanaga T, et al. Effects of a cysteinyl leukotriene dual 1/2 receptor antagonist on antigen-induced airway hypersensitivity and airway inflammation in a guinea pig asthma model. Int Arch Allergy Immunol 2011,155 Suppl 1:90-95.3. Wikstrom Jonsson E, Rosenqvist U, Dahlen SE. Agonist and antagonist activities of the leukotriene analogue BAY u9773 in guinea pig lung parenchyma. Eur J Pharmacol 1998,357:203-211.
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利用NheI和HindIII双酶切插入目的片段，为什么双酶切有目的片段和切开的质粒，测序却没有？
并且测序后在NheI位点后的序列变成了-GGCTAGGTAC-Kpn位点（CGTTTAAACTTAAGCTTG消失。之前和之后的序列都相符），之间的怎么都没了？
请教高人，这样的问题怎么解决？
多谢
你所说的“测序酶”在一般情况下就是“聚合酶”。
因为目前的的测序方法主要就是借助聚合反应。
当然，有些测序方法（比如曾经的SOLiD系统）是利用连接反应，那么它用的“测序酶”肯定是连接酶。
估计，也就是这个原因有人把它。
两个基因大小分别230kb和450kb，酶切后，450kb的有目的条带，但很弱，230kb的质粒条带亮，其下方有一很微弱条带，用的酶分别是：Ncol和Spel体系是（Takara，两个酶切体系不同，用的官网推荐体系）：
NcoI1μl
Spel1μl
10×KBuffer2μl
0.1%BSA2μl
DNA3ul
灭菌水upto20μl37℃4h电泳1h
期待着高手们的指点，谢谢。
【之前构建的4个重组质粒里也有两个出现这样的问题（aagtcc变成agtcc），但是酶切能切出插入的片段】
目前问测序公司得到的答复是样品可能不是单克隆，测序结果是不准确的，建议重新挑取单克隆测序。
不知道还有没有别的方法？
●应用酶水解多肽不会破坏氨基酸，也不会发生消旋化。水解的产物为较小的肽段。向左转|向右转
