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重要文件

D4545

Sigma-Aldrich

Taq DNA聚合酶 来源于水生栖热菌

with 10× PCR reaction buffer without MgCl2

同義詞:

Taq polymerase, Taq polymerase enzyme

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About This Item

CAS號碼:
酶委員會編號:
MDL號碼:
分類程式碼代碼:
12352204
NACRES:
NA.55
暫時無法取得訂價和供貨情況

生物源

enzyme from bacterial (Thermus Aquaticus)

品質等級

重組細胞

expressed in E. coli

形狀

liquid

用途

sufficient for 1500 reactions
sufficient for 250 reactions
sufficient for 50 reactions
sufficient for 5000 reactions

特點

dNTPs included: no
hotstart: no

濃度

5 units/μL

技術

PCR: suitable

顏色

colorless

輸入

purified DNA

適合性

suitable for PCR and automated sequencing reactions

應用

agriculture

運輸包裝

wet ice

儲存溫度

−20°C

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一般說明

Taq聚合酶是一种热稳定的DNA聚合酶,以嗜热细菌水生栖热菌命名。 一种稳定的脱氧核糖核酸(DNA)聚合酶(最适温度为80°C)已从极端嗜热菌水生栖热菌中纯化出来。 该酶没有磷酸单酯酶,磷酸二酯酶和单链核酸外切酶活性。 该酶的最大活性需要所有四个脱氧核糖核苷酸和活化的小牛胸腺DNA。[1]

應用

来自水生栖热菌的Taq DNA聚合酶已用于:
  • DNA提取过程(基因扩增和测序过程)
  • 基因分型[2]
  • 聚合酶链式反应(PCR),研究上皮中性粒细胞活化肽78 (ENA-78)和白细胞介素-8 (IL-8)的组成性产生[3]
  • 通过常规PCR扩增原代内皮细胞的RNA[4]

生化/生理作用

Taq聚合酶可催化寡核苷酸引物驱动的、DNA模板依赖性地将dNTP掺入互补DNA链中。 它具有5′至3′聚合酶和核酸外切酶活性。

特點和優勢

  • 在单独的试管中提供MgCl 2,以优化MgCl2
  • 可以耐受反复加热至95 °C而不出现明显活性损失。

包裝

Taq DNA聚合酶具有两种形式,含MgCl2的优化型10倍反应缓冲液(D1806),或不含MgCl2的10倍反应缓冲液加独立管装MgCl2以用于滴定(D4545)。 第二种形式可能是确定最佳扩增条件所必需的。
不含MgCl2的Taq DNA聚合酶10倍反应缓冲液 包含单独一管的25  mM MgCl2

其他說明

Taq DNA聚合酶是一种来自于嗜热菌水生栖热菌( Thermus aquaticus)的特殊热稳定酶。 该酶的重组形式可在大肠杆菌( E. coli)中表达。 经过SDS-PAGE分析显示,这种分子量为94kDa的蛋白质不含可检测水平的污染性核酸内切酶或核酸外切酶。 它具有5′→3′聚合酶和核酸外切酶活性。

單位定義

一个酶活性单位是指在74℃下在30分钟内将10 nmol总dNTP掺入酸性可沉淀DNA中所需的酶量。

法律資訊

本产品的使用受到如下一项或多项美国专利及其对应的境外专利声明保护:US 8,404,464和US 7,972,828。 购买本产品,即相当于依照境外的专利声明获得了一份受限制、不可转让的使用许可。

危險聲明

防範說明

危險分類

Aquatic Chronic 3

儲存類別代碼

12 - Non Combustible Liquids

水污染物質分類(WGK)

WGK 2

閃點(°F)

Not applicable

閃點(°C)

Not applicable


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A Chien et al.
Journal of bacteriology, 127(3), 1550-1557 (1976-09-01)
A stable deoxyribonucleic acid (DNA) polymerase (EC 2.7.7.7) with a temperature optimum of 80 degrees C has been purified from the extreme thermophile Thermus aquaticus. The enzyme is free from phosphomonoesterase, phosphodiesterase and single-stranded exonuclease activities. Maximal activity of the
Nick A Bersinger et al.
Fertility and sterility, 89(5 Suppl), 1530-1536 (2007-09-01)
To analyze the constitutive production of epithelial neutrophil activating peptide 78 (ENA-78) and interleukin-8 (IL-8) by epithelial cells and the response of these cells to cytokine stimulation. In vitro study using eutopic endometrial tissue. University hospital. Cycling women undergoing laparoscopy
Slobodan Jergic et al.
The EMBO journal, 32(9), 1322-1333 (2013-02-26)
Processive DNA synthesis by the αεθ core of the Escherichia coli Pol III replicase requires it to be bound to the β2 clamp via a site in the α polymerase subunit. How the ε proofreading exonuclease subunit influences DNA synthesis
Claire Palles et al.
Nature genetics, 45(2), 136-144 (2012-12-25)
Many individuals with multiple or large colorectal adenomas or early-onset colorectal cancer (CRC) have no detectable germline mutations in the known cancer predisposition genes. Using whole-genome sequencing, supplemented by linkage and association analysis, we identified specific heterozygous POLE or POLD1
Jean-François Lutz et al.
Science (New York, N.Y.), 341(6146), 1238149-1238149 (2013-08-10)
Sequence-controlled polymers are macromolecules in which monomer units of different chemical nature are arranged in an ordered fashion. The most prominent examples are biological and have been studied and used primarily by molecular biologists and biochemists. However, recent progress in

文章

探索 PCR 從發現到諾貝爾獎的歷史。探索即時 PCR (qPCR) 和數位 PCR 的發展。

Explore PCR's history, from discovery to Nobel Prize. Discover real-time PCR (qPCR) and digital PCR developments.

The polymerase chain reaction is one of the most widely used techniques in molecular biology. The PCR process consists of three main steps, Denaturation, Annealing & Extension

聚合酶連鎖反應是分子生物學中最廣泛使用的技術之一。PCR 過程包括三個主要步驟:變性、退火和延展。

條款

Hot start dNTP protocol enhances specificity in PCR by blocking DNA polymerase nucleotide incorporation during PCR.

Hot Start dNTPs block DNA polymerase until heat activation, enhancing PCR specificity.

Learn standard PCR protocol steps and review reagent lists or cycling parameters. This method for routine PCR amplification of DNA uses standard Taq DNA polymerase.

學習標準 PCR 方案步驟,並檢視試劑清單或週期參數。本方法用於 DNA 的常規 PCR 擴增,使用標準的 Taq DNA 聚合酶。

相關內容

Protocol using hot start dNTPs. Method includes modified nucleoside triphosphates that block DNA polymerase nucleotide incorporation during hot start PCR to increase specificity. Compatible with a variety of PCR reagents.

Hot Start dNTPs are modified with a thermolabile protecting group at the 3’ terminus. The presence of this modification blocks nucleotide incorporation by DNA polymerase until the nucleotide protecting group is removed during a heat activation step.

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