Recombinant human Elongin B protein
Elongin B, also known as TCEB2, is a subunit of the transcription factor B (SIII) complex. The SIII complex is a heterotrimer consisting of a transcriptionally active subunit (A) and two regulatory subunits (B and C) . It activates elongation by RNA polymerase II by suppressing transient pausing of the polymerase at many sites within transcription units. The von Hippel-Lindau tumor suppressor protein (pVHL) binds to elongins B and C, and thereby inhibits transcription elongation. Recombinant TCEB2 was expressed as insoluble protein aggregate in E. coli and purified by conventional chromatography, after refolding of the isolated inclusion bodies in a renaturation buffer.
Product Specifications
Product Name Alternative
Expression System
E.coli
Antigen Species
Human
Tag
Non-Tagged
Applications
SDS-PAGE
Concentration
1 mg/mL (determined by Bradford assay)
Purity
> 95% by SDS-PAGE
Molecular Weight
13.1 kDa (118aa) confirmed by MALDI-TOF
Additionnal Information
References & Citations
Piessevaux J., et al. (2008) J Biol Chem. 283 (31) :21334-46.; ; Duan DR., et al. (1995) Science. 269 (5229) :1402-6;
Storage Conditions
Can be stored at 2°C to 8°C for 1 week. For long term storage, aliquot and store at -20C to -80C. Avoid repeated freezing and thawing cycles.
Formulation
Liquid in. 20 mM Tris-HCl buffer (pH 8.0) containing 1mM DTT, 0.1mM PMSF, 20% glycerol
Scientific Category
Cell Cycle
NCBI Accession Number
NP_009039
Uniprot Accession Number
Q15370
Species
Human
AA Sequence
MDVFLMIRRH KTTIFTDAKE SSTVFELKRI VEGILKRPPD EQRLYKDDQL LDDGKTLGEC GFTSQTARPQ APATVGLAFR ADDTFEALCI EPFSSPPELP DVMKPQDSGS SANEQAVQ
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