Product info:

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.

Alternative names:

SUPT5H; SPT5; SPT5H; Tat-CT1; transcription elongation factor SPT5

Species reactivity:

Human, Mouse, Rat

Host:

Rabbit

Cellular localisation:

Nucleus

Isotype:

IgG

Immunogen:

Recombinant protein of human SUPT5H/SPT5.

Positive control:

HeLa

AA Sequence:

Email info@sobekbio.com for sequence

Purification:

Affinity purification

Molecular weight:

Calculated MW: 155kDa Observed MW: 150kDa

Form:

Liquid

Applications:

Request info at info@sobekbio.com

Dilution:

WB 1:500 - 1:2000 IHC 1:50 - 1:200 IF 1:50 - 1:200

Storage buffer:

Buffer: PBS with 0.02% sodium azide, 0.05% BSA, 50% glycerol, pH7.3.

Storage:

Store at 4°C short term. For long-term storage, aliquot and store at -20°C or below. Stable for 12 months at -20°C. Avoid repeated freeze-thaw cycles.

More info:

Email: info@sobekbio.com

Orders:

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