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T8819

Sigma-Aldrich

TFIIB human

~5 units/μL, recombinant, expressed in E. coli, solution

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About This Item

MDL number:
UNSPSC Code:
12352202
NACRES:
NA.56

recombinant

expressed in E. coli

Quality Level

form

solution

mol wt

~32 kDa

concentration

~5 units/μL

UniProt accession no.

shipped in

dry ice

storage temp.

−70°C

Gene Information

human ... GTF2B(2959)

Biochem/physiol Actions

General transcription factor for RNA Polymerase II.
The amino terminal region of TFIIB contains a zinc ribbon fold composed of antiparallel Β strands. Mutational studies show that this domain is required for recruitment of RNA Pol II for transcriptional initiation.

Unit Definition

One gel shift unit is the amount of TFIIB required to form 0.2 pmol of TFIIB/TFIID/DNA complex as detected by gel shift.

Physical form

Solution in 20 mM Tris-HCl, pH 7.4, 100 mM NaCl, 2 mM DTT, 1 mM EDTA, 0.1% Triton® X-100.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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S Hahn et al.
Genes & development, 14(6), 719-730 (2000-03-25)
The function of the conserved zinc-binding domains in the related Pol II- and Pol III-specific factors TFIIB and Brf was investigated. Three-dimensional structure modeling and mutagenesis studies indicated that for both factors, the functional surface of the zinc ribbon fold

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