PTRF; CGL4; CAVIN; CAVIN1; FKSG13; cavin-1; Polymerase I and transcript release factor; Cavin-1; polymerase I and transcript release factor

For Research Use Only. Not for use in diagnostic procedures.

Polyclonal

IgG

Rabbit

At least three isoforms of PTRF are known to exist; this antibody detects all three isoforms. It is predicted to not cross-react with other members of the cavin family.

PTRF Antibody is affinity chromatography purified via peptide column.

Liquid

1 mg/mL (lot specific)

PTRF antibody can be stored at 4 degree C for three months and -20 degree C, stable for up to one year.

Small volumes of anti-PTRF antibody vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

PTRF Antibody: The polymerase I and transcript release factor (PTRF) enables the dissociation of paused ternary polymerase I transcription complexes from the 3' end of pre-rRNA transcripts, regulating rRNA transcription by promoting the dissociation of transcription complexes and the re-initiation of polymerase I on nascent rRNA transcripts. PTRF also localizes to caveolae at the plasma membrane and is thought to play a critical role in the formation of caveolae and the stabilization of caveolins, translocating from caveolae to the cytoplasm after insulin stimulation. PTRF is also thought to modify lipid metabolism and insulin-regulated gene expression. Mutations in this gene result in a disorder characterized by generalized lipodystrophy and muscular dystrophy.

ELISA (EIA), Western Blot (WB), Immunohistochemistry-Paraffin (IHC-P), Immunofluorescence (IF)

PTRF antibody can be used for detection of PTRF by Western blot at 0.5 - 1 mug/mL.

Western blot analysis of PTRF in human spleen tissue lysate with PTRF antibody at (A) 0.5 and (B) 1 μg/mL

Immunohistochemistry of PTRF in human spleen tissue with PTRF antibody at 5 μg/ml.

Immunofluorescence of PTRF in human spleen tissue with PTRF antibody at 20 μg/ml.

43 kDa

polymerase I and transcript release factor

polymerase I and transcript release factor; PTRF; TTF-I interacting peptide 12; RNA polymerase I and transcript release factor

Polymerase I and transcript release factor

PTRF_HUMAN

This gene encodes a protein that enables the dissociation of paused ternary polymerase I transcription complexes from the 3' end of pre-rRNA transcripts. This protein regulates rRNA transcription by promoting the dissociation of transcription complexes and the reinitiation of polymerase I on nascent rRNA transcripts. This protein also localizes to caveolae at the plasma membrane and is thought to play a critical role in the formation of caveolae and the stabilization of caveolins. This protein translocates from caveolae to the cytoplasm after insulin stimulation. Caveolae contain truncated forms of this protein and may be the site of phosphorylation-dependent proteolysis. This protein is also thought to modify lipid metabolism and insulin-regulated gene expression. Mutations in this gene result in a disorder characterized by generalized lipodystrophy and muscular dystrophy. [provided by RefSeq, Nov 2009]

PTRF: Plays an important role in caveolae formation and organization. Required for the sequestration of mobile caveolin into immobile caveolae. Termination of transcription by RNA polymerase I involves pausing of transcription by TTF1, and the dissociation of the transcription complex, releasing pre-rRNA and RNA polymerase I from the template. PTRF is required for dissociation of the ternary transcription complex. Defects in PTRF are the cause of congenital generalized lipodystrophy type 4 (CGL4). It is a disorder characterized by the association of congenital generalized lipodystrophy with muscular dystrophy and cardiac anomalies. Congenital generalized lipodystrophy is characterized by a near complete absence of adipose tissue, extreme insulin resistance, hypertriglyceridemia, hepatic steatosis and early onset of diabetes. Belongs to the PTRF/SDPR family. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Transcription initiation complex

Chromosomal Location of Human Ortholog: 17q21.2

Cellular Component: nucleoplasm; protein complex; intracellular membrane-bound organelle; mitochondrion; endoplasmic reticulum; cytoplasm; plasma membrane; caveola; cytosol; nucleus

Molecular Function: protein binding; rRNA primary transcript binding

Biological Process: regulation of transcription, DNA-dependent; transcription from RNA polymerase I promoter; gene expression; termination of RNA polymerase I transcription; transcription initiation from RNA polymerase I promoter

Disease: Lipodystrophy, Congenital Generalized, Type 4

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