43815

DL-Dithiothreitol

BioUltra, for molecular biology, ≥99.5% (RT)

• 동의어(들): (±)-Dithiothreitol, rac-Dithiothreitol, Dithiothreitol, threo-1,4-Dimercapto-2,3-butanediol, Cleland’s reagent, DTT
• Linear Formula: HSCH₂CH(OH)CH(OH)CH₂SH
• CAS Number: 3483-12-3
• Molecular Weight: 154.25
• Beilstein: 1719757
• EC Number: 222-468-7
• MDL number: MFCD00004877
• UNSPSC 코드: 12161504
• PubChem Substance ID: 57650195
• NACRES: NA.25

속성

• Grade: for molecular biology
• Quality Level: 200
• 제품 라인: BioUltra
• 분석: ≥99.5% (RT)
• 양식: powder
• 반응 적합성: reagent type: reductant
• 불순물: DNases, none detected; RNases, none detected; insoluble matter, passes filter test; phosphatases, none detected; proteases, none detected; ≤0.3% 4,5-dihydroxy-1,2-dithiane
• pH: 4.0-6.5 (25 °C, 0.1 M in H₂O)
• mp: 41-44 °C (lit.)
• solubility: H₂O: 0.1 M at 20 °C, clear, colorless
• 음이온 미량물: sulfate (SO₄^2-): ≤50 mg/kg
• 양이온 미량물: Al: ≤5 mg/kg; As: ≤0.5 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; K: ≤50 mg/kg; Li: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Mo: ≤5 mg/kg; Na: ≤500 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Sr: ≤5 mg/kg; Zn: ≤5 mg/kg
• λ: 0.1 M in H₂O
• UV 흡수: λ: 260 nm A_max: 0.400; λ: 280 nm A_max: 0.100
• SMILES string: O[C@H](CS)[C@H](O)CS
• 저장 온도: 2-8°C
• InChI: 1S/C4H10O2S2/c5-3(1-7)4(6)2-8/h3-8H,1-2H2/t3-,4-/m1/s1
• InChI key: VHJLVAABSRFDPM-QWWZWVQMSA-N

설명

일반 설명

Dithiothreitol (DTT) is a thiol-reducing reagent that quantitatively reduces disulfide (SH) groups in biological molecules. It specifically targets the disulfide bridge of the cross-linker N,N′-bis(acryloyl)cystamine to break apart the matrix of a polyacrylamide gel. DTT is less pungent and less toxic than 2-mercaptoethanol. Typically, a seven-fold lower concentration of DTT (100 mM) is more efficient than that of 2-mercaptoethanol (5% v/v, 700 mM).

애플리케이션

An excellent reagent for maintaining SH groups in reduced state; quantitatively reduces disulfides. DTT is effective in sample buffers for reducing protein disulfide bonds prior to SDS-PAGE. DTT can also be used for reducing the disulfide bridge of the cross-linker N,N′-bis(acryloyl)cystamine to break apart the matrix of a polyacrylamide gel. DTT is less pungent and is less toxic than 2-mercaptoethanol. Typically, a seven fold lower concentration of DTT (100 mM) is needed than is used for 2-mercaptoethanol (5% v/v, 700 mM).

DTT has been used:

• as an enzyme stabilizer to maintain exebacase stability[1]
• for peptide extraction and protein denaturation[2]
• in sample preparation and reversal of formaldehyde crosslinks before mass spectrometry[3]
• as a buffer component to extract synaptogliosome[4]

생화학적/생리학적 작용

Dithiothreitol (DTT) is broadly used in chemical peptide synthesis and biochemical preparations of thiol proteins. Additionally, studies on protein folding and enzyme activity in protein chemistry make use of DTT. This reagent explicitly mediates the thiol-disulfide exchange reaction to completely reduce the intra-or between sub-atomic disulfide bonds in biomolecules. This reaction brings about the arrangement of thiols and the cyclic disulfide of DTT.[5]

특징 및 장점

• BioUltra grade powder suitable for molecular biology
• DNase, RNase, phosphatase, and protease-free insoluble matter, passes the filter test
• Stringently tested and free from trace metals

기타 정보

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Isolation of RNA using guanidinium salts. Inclusion of a reductant enhances denaturation by breaking intramolecular protein disulfide bonds.[6]

안전성 정보

• 픽토그램: GHS05,GHS07
• 신호어: Danger
• 유해 및 위험 성명서: H302,H315,H318
• 예방조치 성명서: P264 - P280 - P301 + P312 - P302 + P352 - P305 + P351 + P338 - P332 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1 - Skin Irrit. 2
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 2
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable
• 개인 보호 장비: dust mask type N95 (US), Eyeshields, Faceshields, Gloves