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等級
for fluorescence
化驗
≥95.0% (HPLC)
mp
260-262 °C (dec.) (lit.)
溶解度
H2O: 10 mg/mL, opaque, very dark red
螢光
λex 480 nm; λem 620 nm in H2O
λex 530 nm; λem 600 nm in 50 mM phosphate buffer pH 7.0 (upon binding to DNA)
SMILES 字串
[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 密鑰
ZMMJGEGLRURXTF-UHFFFAOYSA-N
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一般說明
Ethidium bromide (EtBr) undergoes complexation with nucleic acids (DNA and RNA) specifically to the saturated sites. These complexes decomposes by employing a cation-exchange resin. It has been reported to inhibit the production of mitochondrial RNA in HeLa cells. On interaction with helical polynucleotides under high salt medium, it forms fluorescent complex (having high fluorescence quantum yield).
應用
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。
插入双链 DNA 和 RNA 的移码诱变剂。
Ethidium bromide has been used to prepare fluorescent stock solution for the evaluation of cell viability during the live/dead assay of adipose-derived stem cells (ADSCs) seeded on irradiated hydrogels.
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。
重構
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。
其他說明
Intercalating agent and fluorescent label for DNA. Review; Destruction and decontamination of solutions
訊號詞
Danger
危險聲明
危險分類
Acute Tox. 1 Inhalation - Acute Tox. 4 Oral - Muta. 2
儲存類別代碼
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
水污染物質分類(WGK)
WGK 1
閃點(°F)
Not applicable
閃點(°C)
Not applicable
個人防護裝備
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Analytical biochemistry, 162(2), 453-458 (1987-05-01)
Ethidium bromide in water, TBE buffer, Mops buffer, and cesium chloride solution may be completely degraded by reaction with sodium nitrite and hypophosphorous acid. Only non-mutagenic reaction mixtures were produced. Destruction was greater than 99.8% in all cases; the limit
Antibiotics III, 141-141 (1975)
Selective inhibition of the synthesis of mitochondria-associated RNA by ethidium bromide.
Journal of molecular biology, 44(1), 195-204 (1969-08-28)
Complex formation between ethidium bromide and nucleic acids.
Journal of Microbiology, 13(1), 269-282 (1965)
A fluorescent complex between ethidium bromide and nucleic acids. Physical-chemical characterization.
Journal of molecular biology, 27(1), 87-106 (1967-07-14)
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