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- 详细信息
- 文献和实验
- 技术资料
- 库存:
大量
- 英文名:
2,3-Butanedione monoxime
- CAS号:
57-71-6
- 保质期:
2年
- 供应商:
瓦兰生物
- 保存条件:
常温
- 规格:
25G
性质
| Related Categories | B, Bioactive Small Molecule Alphabetical Index, Ion Channels, Monovalent Ion Channels, Potassium Channel Modulators, 更多... |
| InChI Key | FSEUPUDHEBLWJY-HWKANZROSA |
| assay | ≥98% |
| bp | 185-186 °C(lit.) |
| mp | 75-78 °C(lit.) |
| Gene Information | human ... KCNB1(3745) |
产品描述
包装
1 kg in poly bottle
25, 100, 500 g in poly bottle
Biochem/physiol Actions
DRK1 is a delayed rectifier (Kv2.1) cloned K+ channel from rat brain with consensus sites for protein kinase-dependent phosphorylation that might be expected to be functionally regulated by phosphorylation. 2,3-Butanedione monoxime (BDM) chemically removes phosphate groups from many proteins, and its action on DRK1 channels was examined after expression of DRK1 cRNA in Xenopus oocytes. In two-microelectrode voltage-clamp experiments, the application of 2,3-Butanedione monoxime to the bath inhibited DRK1 current (ki = 16.6 mM, H = 0.96) rapidly and reversibly, with a time course similar to the time course of solution change within the bath. DRK1 current was inhibited at all potentials; the time course of current activation, deactivation and inactivation were unaffected by 2,3-Butanedione monoxime. In inside-out patch-clamp experiments, the application of 2,3-Butanedione monoxime to the cytoplasmic surface similarly inhibited channel activity rapidly and reversibly (ki = 10.7 mM, H = 1.01) in the absence of rephosphorylating substrates. These results are inconsistent with a phosphatase effect, because such an effect should be irreversible in cell-free, ATP-free patches. Instead, the results suggest that 2,3-Butanedione monoxime can inhibit DRK1 channels directly from inside or outside of the membrane.
Features and Benefits
This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.
法律信息
LOPAC is a registered trademark of Sigma-Aldrich Co. LLC
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文献和实验Voges-Proskauer(V-P) 试验的原理及注意事项
一、试验原理细菌在葡萄糖代谢中生成丙酮酸,从丙酮酸开始,随细菌种类不同而有多种分解途径,有的使丙酮酸进一步分解,生成甲酸、乙酸、乳酸等终产物,有的可以使丙酮酸脱羧变为中性最终产物乙酰甲基甲醇(Acetylmethyl carbinol),亦称 3-羧基丁酮(Acetoin)。本试验即为检查某些细菌在葡萄糖代谢中是否产生乙酰甲基甲醇,作为鉴定依据。乙酰甲基甲醇在碱性环境中可被空气中的氧气氧化为丁二酮(Diacetyl),丁二酮与蛋白胨中精氨酸所含的胍基起作用,生成红色化合物,即为 V-P 试验
与中心原子直接相连的原子叫配位原子。配体的个数称为配位数。在 [Cu ( NH 3 ) 4 ]SO 4 中氮原子为配位原子,配位数是 4 。 含有一个配位原子的配体叫单齿配体。配体可能配位的原子数目用单齿、二齿、三齿等表示。一个多齿配体通过两个或两个以上的配位原子与一个中心原子形成的配合物称为螯合物,如: 在碱性溶液中形成的丁二肟镍是一螯合物,每一个丁二肟配体提供两个配位原子(氮原子)。 F , Cl , Br
生物的遗骸、分泌物、排泄物等含氮有机物,通过微生物的作用主要是厌氧性分解的一种复杂的过程。高分子化合物在微生物的水解酶的作用下可变成低分子化合物,但供氧不足时则不能进行彻底的氧化,而是由各种厌氧菌进行不完全的分解作用。糖经发酵形成乙醇、丁醇、乙酸、丁酸、丙酸、3-羟基丁醇和丁二酮等,氨基酸脱氨基,生成低级脂肪酸与氨,氨基酸脱羧基,生成各种胺和其他含硫化合物等,因而产生恶臭。还生成二氧化碳、氢、甲烷等气体。此外,微生物还会产主毒素而造成食物中毒。
技术资料








