KSC-34
目录号 : GC61579
KSC-34是蛋白质二硫键异构酶A1(PDIA1)的共价修饰剂，是一种有效的PDIA1a位点选择性抑制剂，IC50为3.5μM。KSC-34对a′结构域的选择性为30倍。KSC-34在复杂蛋白质组中对PDIA表现出选择性。
Cas No.:2226201-97-2
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >99.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
KSC-34, a covalent modifier of protein disulfide isomerase A1 (PDIA1), is also a selective and potent a-site inhibitor of PDIA1 with an IC50 of 3.5 μM. KSC-34 displays a 30-fold selectivity for a domain over a′ domain and displays high selectivity for PDIA1 in complex proteomes with minimal engagement of other members of the PDI family[1].
KSC-34 is selective for PDIA1 over other members of the PDI family, and other cellular cysteine-containing proteins. KSC-34 contains a (4-phenylbutyl)methylamine diversity element for optimized binding to the active site of the a domain of PDIA1 with a chloroacetamide electrophile for covalent modification of C53 on PDIA1[1].
[1]. Cole KS, et al. Characterization of an A-Site Selective Protein Disulfide Isomerase A1 Inhibitor. Biochemistry. 2018;57(13):2035-2043.
| Cas No. | 2226201-97-2 | SDF | |
| Canonical SMILES | O=C(NCCNC1=NC(N(C)CCCCC2=CC=CC=C2)=NC(NCC#C)=N1)CCl | ||
| 分子式 | C21H28ClN7O | 分子量 | 429.95 |
| 溶解度 | DMSO: 100 mg/mL (232.59 mM) | 储存条件 | 4°C, stored under nitrogen |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 2.3259 mL | 11.6293 mL | 23.2585 mL |
| 5 mM | 0.4652 mL | 2.3259 mL | 4.6517 mL |
| 10 mM | 0.2326 mL | 1.1629 mL | 2.3259 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Characterization of an A-Site Selective Protein Disulfide Isomerase A1 Inhibitor
Biochemistry 2018 Apr 3;57(13):2035-2043.PMID:29521097DOI:PMC5884060
Protein disulfide isomerase A1 (PDIA1) is an endoplasmic reticulum (ER)-localized thiol-disulfide oxidoreductase that is an important folding catalyst for secretory pathway proteins. PDIA1 contains two active-site domains (a and a'), each containing a Cys-Gly-His-Cys (CGHC) active-site motif. The two active-site domains share 37% sequence identity and function independently to perform disulfide-bond reduction, oxidation, and isomerization. Numerous inhibitors for PDIA1 have been reported, yet the selectivity of these inhibitors toward the a and a' sites is poorly characterized. Here, we identify a potent and selective PDIA1 inhibitor, KSC-34, with 30-fold selectivity for the a site over the a' site. KSC-34 displays time-dependent inhibition of PDIA1 reductase activity in vitro with a kinact/ KI of 9.66 × 103 M-1 s-1 and is selective for PDIA1 over other members of the PDI family, and other cellular cysteine-containing proteins. We provide the first cellular characterization of an a-site selective PDIA1 inhibitor and demonstrate that KSC-34 has minimal sustained effects on the cellular unfolded protein response, indicating that a-site inhibition does not induce global protein folding-associated ER stress. KSC-34 treatment significantly decreases the rate of secretion of a destabilized, amyloidogenic antibody light chain, thereby minimizing pathogenic amyloidogenic extracellular proteins that rely on high PDIA1 activity for proper folding and secretion. Given the poor understanding of the contribution of each PDIA1 active site to the (patho)physiological functions of PDIA1, site selective inhibitors like KSC-34 provide useful tools for delineating the pathological role and therapeutic potential of PDIA1.