| all-trans Retinalconverted to retinoic acid in vivo |
Sample solution is provided at 25 µL, 10mM.
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- Purity = 98.17%
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| Cas No. | 116-31-4 | SDF | Download SDF |
| Synonyms | Retinaldehyde,Vitamin A aldehyde | ||
| Chemical Name | retinal | ||
| Canonical SMILES | CC1=C(/C=C/C(C)=C/C=C/C(C)=C/C([H])=O)C(C)(C)CCC1 | ||
| Formula | C20H28O | M.Wt | 284.4 |
| Solubility | ≥57.4 mg/mL in DMSO, ≥56.6 mg/mL in EtOH, <1.45 mg/ml="" in="" h2o=""> | Storage | Store at -20°C |
| 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. | ||
All-trans Retinal, also known as Vitamin A aldehyde or Retinaldehyde, is one of the many forms of vitamin A and also the oxidation product of all-trans retinol [1]. All-trans Retinal are associated with one of the two isoforms of cellular retinol-binding proteins (CRBP-I and CRBP-II) with Kd values of 50 and 90 nM, respectively [1].
CRBP-I and CRBP-II were the first intracellular retinoid-binding proteins. Both proteins display a similar binding affinity towards retinal. They play important roles in retinoid biology and regulation of the metabolism of retinol and retinal. CRBP-I is used to regulate vitamin A storage and synthesis of retinoic acid. And CRBP-II has a role in the initial processing of retinol from food [1].
All-trans Retinal is one form of vitamin A. All-trans Retinal, the initial substrate of retinoid cycle, is a chemically reactive aldehyde that can form toxic conjugates with proteins and lipids, leading to degeneration of the retina [2].
References:[1]. Noy N. Retinoid-binding proteins: mediators of retinoid action. Biochem J. 2000 Jun 15;348 Pt 3:481-95.[2]. Kiser PD, Golczak M, Maeda A, et al. Key enzymes of the retinoid (visual) cycle in vertebrate retina. Biochim Biophys Acta. 2012 Jan;1821(1):137-51.
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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
