所有图片(3)

E7637

Sigma-Aldrich

溴化乙锭

BioReagent, for molecular biology, powder

别名:
胡米溴铵, 3,8-二氨基-5-乙基-6-苯基菲啶溴化物, EtBr
Empirical Formula (Hill Notation):
C21H20BrN3
CAS号:
分子量:
394.31
Beilstein:
3642536
EC 号:
MDL编号:
PubChem化学物质编号:
NACRES:
NA.31

质量水平

200

等级

for molecular biology

产品线

BioReagent

形式

powder

technique(s)

electrophoresis: suitable

mp

260-262 °C (dec.) (lit.)

荧光

λex 360 nm; λem 590 nm in PBS
λex 526 nm; λem 605 nm (10 mM TBE; pH 8.0;)
λex 526 nm; λem 605 nm in aqueous buffer

适用性

suitable for gel electrophoresis

SMILES string

[Br-].CC[n+]1c(-c2ccccc2)c3cc(N)ccc3c4ccc(N)cc14

InChI

1S/C21H19N3.BrH/c1-2-24-20-13-16(23)9-11-18(20)17-10-8-15(22)12-19(17)21(24)14-6-4-3-5-7-14;/h3-13,23H,2,22H2,1H3;1H

InChI key

ZMMJGEGLRURXTF-UHFFFAOYSA-N

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应用

溴化乙锭 (EtBr) 是 PAGE 或琼脂糖凝胶电泳最常用的核酸染色剂。EtBr 的荧光在与双链 RNA 结合后可增加 21 倍,在与双链 DNA 结合后增加 25 倍,因此在低染色浓度(10μg/ml)下无需本底脱色。溴化乙锭已用于大量核酸荧光测定。 它已被证明可与单链 DNA(虽然没有那么强)和三链 DNA 结合。由于它能与 DNA 结合,EtBr 是 DNA 聚合酶的抑制剂。

插入双链 DNA 和 RNA 的移码诱变剂。

包装

1, 5, 25 g in glass bottle

生化/生理作用

溴化乙啶可插入双链 DNA 和 RNA 中,并作为移码诱变剂。它还可与吖啶橙结合用于区分存活的、凋亡的和坏死的细胞。

重悬

对于在电泳后进行凝胶染色,应先用水将储存液样品稀释到 0.5μg/ml,再将凝胶孵育 15-30 分钟。通常无需脱色,但是如果必须降低背景色,则可在水中脱色 15 分钟。然后可在紫外灯箱(254nm 波长)中检测 DNA 条带。也可将溴化乙啶加到凝胶和电泳缓冲液(终浓度 0.5μg/ml)中,并在电泳后立即显影。

象形图

Skull and crossbonesHealth hazard

警示用语:

Danger

危险声明

危险分类

Acute Tox. 1 Inhalation - Acute Tox. 4 Oral - Muta. 2

储存分类代码

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 1

闪点(F)

Not applicable

闪点(C)

Not applicable

个人防护装备

Eyeshields, Faceshields, Gloves, type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges

分析证书

原产地证书 (CofO)

Anna Mas-Vinyals et al.
Colloids and surfaces. B, Biointerfaces, 181, 864-871 (2019-08-07)
Regenerative medicine requires the use of heterogeneous scaffolds when the tissue that needs to be repaired presents a gradient in its properties and cannot be replaced by a homogeneous graft. Then, an intimate contact between the different layers is critical
Ulrich Braunschweig et al.
Genome research, 24(11), 1774-1786 (2014-09-27)
Alternative splicing (AS) of precursor RNAs is responsible for greatly expanding the regulatory and functional capacity of eukaryotic genomes. Of the different classes of AS, intron retention (IR) is the least well understood. In plants and unicellular eukaryotes, IR is
Suguru Shigemori et al.
Microbial cell factories, 14, 189-189 (2015-11-27)
Mucosal delivery of therapeutic proteins using genetically modified strains of lactic acid bacteria (gmLAB) is being investigated as a new therapeutic strategy. We developed a strain of gmLAB, Lactococcus lactis NZ9000 (NZ-HO), which secretes the anti-inflammatory molecule recombinant mouse heme
Patrick Seitz et al.
PLoS genetics, 10(1), e1004066-e1004066 (2014-01-07)
The DNA uptake of naturally competent bacteria has been attributed to the action of DNA uptake machineries resembling type IV pilus complexes. However, the protein(s) for pulling the DNA across the outer membrane of Gram-negative bacteria remain speculative. Here we
Li Zhang et al.
Comparative biochemistry and physiology. Part A, Molecular & integrative physiology, 186, 39-51 (2014-12-04)
Bill Milsom has made seminal contributions to our understanding of ventilatory control in a wide range of vertebrates. Teleosts are particularly interesting, because they produce a 3rd, potentially toxic respiratory gas (ammonia) in large amounts. Fish are well known to

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