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.

Target	SUPT5H
Reactivity	Human
Host	Rabbit
Clonality	Polyclonal
Tested Applications	WB
Recommended dilutions	Optimal dilutions/concentrations should be determined by the end user.
Immunogen	Human SUPT5H.
Purification	Peptide Affinity Purified Rabbit Polyclonal Antibody.
Isotype	IgG
Conjugation	Unconjugated
Specificity	This SUPT5H antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide between 395-424 amino acids from the Central region of human SUPT5H.
Storage	Aliquot and store at -20 °C. Avoid repeated freeze/thaw cycles.
Swiss Prot	O00267
Gene Symbol	SUPT5H
Buffer	PBS with 0.09% (W/V) sodium azide. This antibody is purified through a protein A column, followed by peptide affinity purification.
Availability	Shipped within 5-10 working days.
Note	This product is for research use only.