Rockville, MD/Seattle, WA ?May 11, 2010 ?OriGene and the Institute for Systems Biology (ISB), announce plans to create a proteotypic PeptideAtlas and develop an SRM/MRM mass spectrometry standard database for 5,000 human proteins (Press Release)
> 80% as determined by SDS-PAGE and Coomassie blue staining
Concentration:
> 50 ug/ml as determined by BCA
Labeling Method:
Labeled with [U- 13C6, 15N4]-L-Arginine and [U- 13C6, 15N2]-L-Lysine
Labeling Efficiency:
> 90% incorporation
Buffer and Storage:
100 mM glycine, 25 mM Tris-HCl, pH 7.3. Store at -80C. Avoid repeated freeze-thaw cycles. Stable for 3 months from receipt of products under proper storage and handling conditions.
*: DDK-tag is the same as FLAG tag. Flag® is a registered trademark of Sigma-Aldrich
Summary: Control of transcription by RNA polymerase II involves the basal transcription machinery which is a collection of proteins. These proteins with RNA polymerase II, assemble into complexes which are modulated by transactivator proteins that bind to cis-regulatory elements located adjacent to the transcription start site. Some modulators interact directly with the basal complex, whereas others may act as bridging proteins linking transactivators to the basal transcription factors. Some of these associated factors are weakly attached while others are tightly associated with TBP in the TFIID complex. Among the latter are the TAF proteins. Different TAFs are predicted to mediate the function of distinct transcriptional activators for a variety of gene promoters and RNA polymerases. TAF12 interacts directly with TBP as well as with TAF2I. Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Sep 2008].
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