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Merck

D0632

Sigma-Aldrich

DL-二硫苏糖醇

≥98% (HPLC), ≥99.0% (titration)

别名:

(±)-二硫苏糖醇,外消旋二硫苏糖醇,二硫苏糖醇, 1,4-二巯基苏糖醇, DTT, 克莱兰氏试剂

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About This Item

线性分子式:
HSCH2CH(OH)CH(OH)CH2SH
CAS号:
分子量:
154.25
Beilstein:
1719757
EC號碼:
MDL號碼:
分類程式碼代碼:
12352201
PubChem物質ID:
NACRES:
NA.21

品質等級

化驗

≥98% (HPLC)
≥99.0% (titration)

形狀

powder

反應適用性

reagent type: reductant

顏色

white

mp

41-44 °C (lit.)

溶解度

H2O: soluble 50 mg/mL, clear, colorless to very faintly yellow

應用

general analytical

儲存溫度

2-8°C

SMILES 字串

O[C@H](CS)[C@H](O)CS

InChI

1S/C4H10O2S2/c5-3(1-7)4(6)2-8/h3-8H,1-2H2/t3-,4-/m1/s1

InChI 密鑰

VHJLVAABSRFDPM-QWWZWVQMSA-N

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一般說明

二硫苏糖醇 (DTT) 是一种存在于蛋白质和氨基酸半胱氨酸中的二硫键 (SH) 还原剂。它可形成六膜环并引发硫醇-二硫键交换,从而还原二硫键。它的还原能力几乎是βME的 7 倍,因此在较低浓度下也能发挥作用。

應用

DTT已用于:α
  • 作为牛奶中主要过敏原αs1-酪蛋白的还原和烷基化反应物之一。
  • 作为精子去膜和再激活培养基的一个组分。
  • 因硫醇可有效保护生物催化剂的活性位点而维持酶的稳定性。
  • 作为还原剂用于测试N-乙基马来酰亚胺与巯基反应的特异性。
  • 蛋白质组学分析,作为质谱分析的溶液蛋白质消化物质
  • 作为蛋白质定量的缓冲液成分,制备洗涤缓冲液 、裂解缓冲液、样品缓冲液和蛋白质洗脱缓冲液
用于将 −SH 基保持在还原态的绝佳试剂;定量还原二硫化物。在 SDS-PAGE 前,DTT 在样品缓冲液中可有效还原蛋白二硫键。DTT 还可用于还原交联剂 N,N′-双(丙烯酰)胱胺的二硫键桥以分解聚丙烯酰胺凝胶基质。DTT 的刺激性和毒性都低于 2-巯基乙醇。通常,使用 DTT (100mM) 所需的浓度是使用 2-巯基乙醇 (5% v/v, 700mM) 的浓度的七分之一。

生化/生理作用

二硫苏糖醇 (DTT) 广泛用于化学肽合成及硫醇蛋白的生化制备。此外,该物质还用于各类蛋白质化学研究,例如蛋白质折叠和酶活性。另外,它还可作为避免 DNA 修饰的酶稳定剂。DTT 特异性介导硫醇-二硫键交换反应,以完全还原生物分子中的分子内或分子间二硫键。从而形成硫醇和 DTT 的环状二硫化物。

特點和優勢

  • 高品质DTT (HPLC≥98%)、(滴度≥99.0%)
  • 适于电泳、蛋白质组学分析

其他說明

如需了解生化试剂系列的更多信息,请填写此表

象形圖

CorrosionExclamation mark

訊號詞

Danger

危險聲明

危險分類

Acute Tox. 4 Oral - Eye Dam. 1 - Skin Irrit. 2

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

dust mask type N95 (US), Eyeshields, Faceshields, Gloves


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Compare columns in resolving medium-sized antibody fragments after digestion with DTT or IdeS using Reversed-Phase Chromatography for analysis.

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