1. Metabolic Enzyme/Protease Cell Cycle/DNA Damage Apoptosis
  2. Cathepsin Deubiquitinase Apoptosis
  3. N-Ethylmaleimide

N-Ethylmaleimide  (Synonyms: N-乙基马来酰亚胺; NEM)

目录号: HY-D0843 纯度: ≥98.0%
COA 产品使用指南

N-Ethylmaleimide (NEM) 衍生于马来酸,能烷基化游离巯基,是一种不可逆的 半胱氨酸蛋白酶 抑制剂。N-Ethylmaleimide 特异的抑制线粒体中的磷酸盐转运。N-Ethylmaleimid 对脯氨酰内肽酶有抑制作用,其 IC50 值为6.3 μM。N-Ethylmaleimide 可用于修饰蛋白质和多肽中的半胱氨酸残基。

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N-Ethylmaleimide Chemical Structure

N-Ethylmaleimide Chemical Structure

CAS No. : 128-53-0

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规格 价格 是否有货 数量
10 mM * 1 mL in DMSO ¥550
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5 mg ¥312
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10 mg ¥474
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25 mg ¥805
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50 mg ¥1223
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100 mg ¥1838
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Customer Review

Other Forms of N-Ethylmaleimide:

  • 生物活性

  • 纯度 & 产品资料

  • 参考文献

生物活性

N-Ethylmaleimide (NEM) derives from maleic acid, it can alkylates free sulfhydryl. N-Ethylmaleimide is an irreversible cysteine protease inhibitor. N-ethylmaleimide specific inhibits phosphate transport in mitochondria. N-Ethylmaleimide inhibits prolyl endopeptidase with an IC50 value of 6.3 μM. N-Ethylmaleimide can be used to modify cysteine residues in proteins and peptides[1][2][3].

IC50 & Target

IC50: 6.3 μM (prolyl endopeptidase)[2]

细胞效力
(Cellular Effect)
Cell Line Type Value Description References
COS-7 EC50
43.7 μM
Compound: NEM
Binding affinity to rat Galpha-fused ORL1 receptor expressed in african green monkey COS7 cells after 90 mins
Binding affinity to rat Galpha-fused ORL1 receptor expressed in african green monkey COS7 cells after 90 mins
[PMID: 22061823]
KB 3-1 IC50
0.03 mM
Compound: N-ethyl maleimide
Cytotoxicity against human KB-3-1 cells incubated for 72 hrs by MTT assay
Cytotoxicity against human KB-3-1 cells incubated for 72 hrs by MTT assay
[PMID: 21657271]
KB-V1 IC50
0.016 mM
Compound: N-ethyl maleimide
Cytotoxicity against drug-resistant human KBV1 cells expressing P-gp incubated for 72 hrs by MTT assay
Cytotoxicity against drug-resistant human KBV1 cells expressing P-gp incubated for 72 hrs by MTT assay
[PMID: 21657271]
MCF7 GI50
9.9 μg/mL
Compound: 45
Cytotoxicity against human MCF7 cells assessed as cell growth after 2 days by sulforhodamine B assay
Cytotoxicity against human MCF7 cells assessed as cell growth after 2 days by sulforhodamine B assay
[PMID: 21481593]
NCI-H460 GI50
6.7 μg/mL
Compound: 45
Cytotoxicity against human H460 cells assessed as cell growth after 2 days by sulforhodamine B assay
Cytotoxicity against human H460 cells assessed as cell growth after 2 days by sulforhodamine B assay
[PMID: 21481593]
SF-268 GI50
6.5 μg/mL
Compound: 45
Cytotoxicity against human SF268 cells assessed as cell growth after 2 days by sulforhodamine B assay
Cytotoxicity against human SF268 cells assessed as cell growth after 2 days by sulforhodamine B assay
[PMID: 21481593]
体外研究
(In Vitro)

N-Ethylmaleimide (20 μM;30 min) affects PP2A activity and ROS production in vascular smooth muscle cells[2]. N-Ethylmaleimide(20 μM;30 分钟)可抑制 Akt Ser-473、Akt Thr-308、p70S6K、核糖体蛋白 S6、4E-BP1、eIF4E、BAD 和 FKHR-L1 磷酸化[2]
N-Ethylmaleimide (20 μM;30 分钟) 影响血管平滑肌细胞中 pro-caspase-3 的转化[2]
N-Ethylmaleimide(20 μM;6 小时)促进血管平滑肌细胞凋亡[2]
N-Ethylmaleimide(20 μM;30 分钟)影响血管平滑肌细胞中的 PP2A 活性和 ROS 产生[2]

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Western Blot Analysis[2]

Cell Line: Vascular smooth muscle cells
Concentration: 20 μM
Incubation Time: 2 hours
Result: Effectively inhibited platelet-derived growth factor-BB (PDGF-BB)-stimulated Akt Ser-473 , Akt Thr-308, p70S6K, ribosomal protein S6, 4E-BP1, BAD and FKHR-L1 phosphorylation with a concentration of 20 μM.

Western Blot Analysis[2]

Cell Line: Vascular smooth muscle cells
Concentration: 20 μM
Incubation Time: 2 hours
Result: Increased of 1.8-fold in the conversion of pro-caspase-3 into active form, and showed better effect with 20 ng/ml PDGF-BB adding.

Apoptosis Analysis[2]

Cell Line: Vascular smooth muscle cells
Concentration: 20 μM
Incubation Time: 6 hours
Result: Induced vascular smooth muscle cells apoptosis by 3-fold, and exhibited 5-fold apoptosis with 20 ng/ml PDGF-BB adding.

Cell Viability Assay[2]

Cell Line: Vascular smooth muscle cells
Concentration: 20 μM
Incubation Time: 30 min
Result: Increased PP2A activity 1.7-flod and increased ROS production 2-fold in vascular smooth muscle cells.
体内研究
(In Vivo)

N-Ethylmaleimide(10 mg/kg;i.h.)促进小鼠急性胃溃疡的患病情况[3]

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Male Wistar rats with acute gastric ulcers induced by absolute ethanol injection[3]
Dosage: 10 mg/kg
Administration: Subcutaneous injection; 10 mg/kg once
Result: Increased the lesion area of acute gastric ulcers and attenuated the gastroprotective effect of PAG in rats.
Clinical Trial
分子量

125.13

Formula

C6H7NO2

CAS 号
性状

<43°C 固体,>46°C 液体

颜色

White to light yellow

中文名称

N-乙基马来酰亚胺

初始来源
运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

溶解性数据
细胞实验: 

DMSO 中的溶解度 : 50 mg/mL (399.58 mM; 超声助溶; 吸湿的 DMSO 对产品的溶解度有显著影响,请使用新开封的 DMSO)

H2O 中的溶解度 : 50 mg/mL (399.58 mM; 超声助溶)

Ethanol 中的溶解度 : 12.5 mg/mL (99.90 mM; 超声助溶)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 7.9917 mL 39.9584 mL 79.9169 mL
5 mM 1.5983 mL 7.9917 mL 15.9834 mL
查看完整储备液配制表

* 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, 6 months; -20°C, 1 month (protect from light)。-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。

* 备注:如您选择水作为储备液,请稀释至工作液后,再用 0.22 μm 的滤膜过滤除菌后使用。

  • 摩尔计算器

  • 稀释计算器

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

质量
=
浓度
×
体积
×
分子量 *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

浓度 (start)

C1

×
体积 (start)

V1

=
浓度 (final)

C2

×
体积 (final)

V2

动物实验:

请根据您的 实验动物和给药方式 选择适当的溶解方案。

以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液,再依次添加助溶剂:
——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议您现用现配,当天使用
以下溶剂前显示的百分比是指该溶剂在您配制终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶

  • 方案 一

    请依序添加每种溶剂: 10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.08 mg/mL (16.62 mM); 澄清溶液

    此方案可获得 ≥ 2.08 mg/mL(饱和度未知)的澄清溶液。

    1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀;再向上述体系中加入 50 μL Tween-80,混合均匀;然后再继续加入 450 μL 生理盐水 定容至 1 mL

    生理盐水的配制:将 0.9 g 氯化钠,溶解于 ddH₂O 并定容至 100 mL,可以得到澄清透明的生理盐水溶液。
  • 方案 二

    请依序添加每种溶剂: 10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.08 mg/mL (16.62 mM); 澄清溶液

    此方案可获得 ≥ 2.08 mg/mL(饱和度未知)的澄清溶液。

    1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液 中,混合均匀。

    2 g SBE-β-CD(磺丁基醚 β-环糊精)粉末定容于 10 mL 的生理盐水中,完全溶解至澄清透明。

以下溶解方案,请直接配制工作液。建议现用现配,在短期内尽快用完。 以下溶剂前显示的百分比是指该溶剂在您配制终溶液中的体积占比; 如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶。

  • 方案 一

    请依序添加每种溶剂: PBS

    Solubility: 100 mg/mL (799.17 mM); 澄清溶液; 超声助溶

动物溶解方案计算器
请输入动物实验的基本信息:

给药剂量

mg/kg

动物的平均体重

g

每只动物的给药体积

μL

动物数量

由于实验过程有损耗,建议您多配一只动物的量
计算结果
工作液所需浓度 : mg/mL
该产品水溶性佳,请具体参考实测 水 / PBS / Saline 中的溶解度数据。
您所需的储备液浓度超过该产品的实测溶解度,如有需要,请与 MCE 中国技术支持联系。
纯度 & 产品资料

纯度: 99.89%

参考文献

完整储备液配制表

* 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, 6 months; -20°C, 1 month (protect from light)。-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。

可选溶剂 浓度 溶剂体积 质量 1 mg 5 mg 10 mg 25 mg
Ethanol / DMSO / H2O 1 mM 7.9917 mL 39.9584 mL 79.9169 mL 199.7922 mL
5 mM 1.5983 mL 7.9917 mL 15.9834 mL 39.9584 mL
10 mM 0.7992 mL 3.9958 mL 7.9917 mL 19.9792 mL
15 mM 0.5328 mL 2.6639 mL 5.3278 mL 13.3195 mL
20 mM 0.3996 mL 1.9979 mL 3.9958 mL 9.9896 mL
25 mM 0.3197 mL 1.5983 mL 3.1967 mL 7.9917 mL
30 mM 0.2664 mL 1.3319 mL 2.6639 mL 6.6597 mL
40 mM 0.1998 mL 0.9990 mL 1.9979 mL 4.9948 mL
50 mM 0.1598 mL 0.7992 mL 1.5983 mL 3.9958 mL
60 mM 0.1332 mL 0.6660 mL 1.3319 mL 3.3299 mL
80 mM 0.0999 mL 0.4995 mL 0.9990 mL 2.4974 mL
DMSO / H2O 100 mM 0.0799 mL 0.3996 mL 0.7992 mL 1.9979 mL

* 备注:如您选择水作为储备液,请稀释至工作液后,再用 0.22 μm 的滤膜过滤除菌后使用。

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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产品名称:
N-Ethylmaleimide
目录号:
HY-D0843
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