SUPT4H1, Recombinant, Human, aa1-117, GST-Tag (Transcription Elongation Factor SPT4)
Catalog No : USB-375469
471.28€
0.00€
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| Product name | SUPT4H1, Recombinant, Human, aa1-117, GST-Tag (Transcription Elongation Factor SPT4) | ||
|---|---|---|---|
| Catalog No | USB-375469 | ||
| Supplier’s Catalog No | 375469 | ||
| Supplier | US Biologicals | ||
| Source antigen | Recombinant, E. coli | ||
| Reactivity | |||
| Cross reactivity | |||
| Applications | |||
| Molecular weight | 40.1 | ||
| Storage | -20°C | ||
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| Other names | |||
| Grade | Highly Purified | ||
| Purity | ~90% (SDS-PAGE) | ||
| Form | Supplied as a liquid in Tris, 50% glycerol. | ||
| Reactivity life | 6 months | ||
| Note | For reserch purpose only | ||
| Purity | ~90% (SDS-PAGE) | ||
| Description | Component of the DRB sensitivity-inducing factor complex (DSIF complex), which regulates mRNA processing and transcription elongation by RNA polymerase II. DSIF positively regulates mRNA capping by stimulating the mRNA guanylyltransferase activity of RNGTT/CAP1A. DSIF also acts cooperatively with the negative elongation factor complex (NELF complex) to enhance transcriptional pausing at sites proximal to the promoter. Transcriptional pausing may facilitate the assembly of an elongation competent RNA polymerase II complex. DSIF and NELF promote pausing by inhibition of the transcription elongation factor TFIIS/S-II. TFIIS/S-II binds to RNA polymerase II at transcription pause sites and stimulates the weak intrinsic nuclease activity of the enzyme. Cleavage of blocked transcripts by RNA polymerase II promotes the resumption of transcription from the new 3' terminus and may allow repeated attempts at transcription through natural pause sites. DSIF can also positively regulate transcriptional elongation and is required for the efficient activation of transcriptional elongation by the HIV-1 nuclear transcriptional activator, Tat. DSIF acts to suppress transcriptional pausing in transcripts derived from the HIV-1 LTR and blocks premature release of HIV-1 transcripts at terminator sequences. Source: Recombinant protein corresponding to aa1-117 from human SUPT4H1, fused to GST-Tag at N-terminal, expressed in E. coli. Molecular Weight: ~40.1kD AA Sequence: ALETVPKDLRHLRACLLCSLVKTIDQFEYDGCDNCDAYLQMKGNREMVYDCTSSSFDGIIAMMSPEDSWVSKWQRVSNFKPGVYAVSVTGRLPQGIVRELKSRGVAYKSRDTAIKT Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer. | ||
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