PTRF

CAVIN1
Identifiers
Aliases	CAVIN1, CAVIN, CGL4, cavin-1, FKSG13, PTRF, polymerase I and transcript release factor, caveolae associated protein 1
External IDs	OMIM: 603198; MGI: 1277968; HomoloGene: 7499; GeneCards: CAVIN1; OMA:CAVIN1 - orthologs
Gene location (Human)
Chr.	Chromosome 17 (human)
End	42,423,256 bp
Gene location (Mouse)
Chr.	Chromosome 11 (mouse)
End	100,861,713 bp
RNA expression pattern
	Top expressed in
	right coronary artery; ; tendon of biceps brachii; ; popliteal artery; ; tibial arteries; ; Descending thoracic aorta; ; saphenous vein; ; ascending aorta; ; left coronary artery; ; body of uterus; ; gastric mucosa;
	Top expressed in
	lactiferous gland; ; ascending aorta; ; aortic valve; ; umbilical cord; ; white adipose tissue; ; ankle joint; ; gastrula; ; subcutaneous adipose tissue; ; plantaris muscle; ; tunica media of zone of aorta;
	More reference expression data
	; ;
	More reference expression data
Gene ontology
Molecular function	rRNA binding; rRNA primary transcript binding; protein binding; RNA binding; identical protein binding;
Cellular component	cytoplasm; cytosol; membrane; nucleoplasm; endoplasmic reticulum; mitochondrion; caveola; membrane raft; nucleus; plasma membrane; intracellular membrane-bounded organelle; protein-containing complex;
Biological process	termination of RNA polymerase I transcription; regulation of transcription, DNA-templated; transcription initiation from RNA polymerase I promoter; DNA-templated transcription, termination; transcription, DNA-templated; rRNA transcription; positive regulation of cell motility; protein secretion;
	Sources:Amigo / QuickGO
Orthologs
	284119
	19285
	ENSG00000177469
	ENSMUSG00000004044
	Q6NZI2
	O54724
	NM_012232
	NM_008986; NM_001359105; NM_027160
	NP_036364
	NP_033012; NP_001346034
	Wikidata
View/Edit Human	View/Edit Mouse

Polymerase I and transcript release factor, also known as Cavin1, Cavin-1 or PTRF, is a protein which in humans is encoded by the PTRF gene.^[5]^[6]

Function

PTRF (Cavin1) has been shown to be crucial for caveola formation and function.^[7] Deformation caveolae promotes the translocation of cavin-1 from caveolae to the nucleus^[8]

Termination of RNA polymerase I catalyzed transcription is a 2-step process that involves pausing of transcription elongation and release of both the pre-ribosomal RNA and Pol I from the DNA template. The pausing is mediated by TTF1 and PTRF.^[9]^[10]

PTRF is a soluble protein containing putative leucine zipper, nuclear localization signal, and PEST domains.^[11]

Interactions

PTRF (Cavin1) forms trimers with Cavin2 and Cavin3 in caveola formation and has been shown to interact with other membrane associating proteins such as EHD2 and caveolins.^[12]

PTRF has been shown to interact with ZNF148.^[13]

References

^ ^a ^b ^c GRCh38: Ensembl release 89: ENSG00000177469 – Ensembl, May 2017
^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000004044 – Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Entrez Gene: PTRF polymerase I and transcript release factor".
^ "CAVIN1 Symbol Report | HUGO Gene Nomenclature Committee". www.genenames.org. Retrieved 2017-05-30.
^ Hill MM, Bastiani M, Luetterforst R, Kirkham M, Kirkham A, Nixon SJ, et al. (January 2008). "PTRF-Cavin, a conserved cytoplasmic protein required for caveola formation and function". Cell. 132 (1): 113–124. doi:10.1016/j.cell.2007.11.042. PMC 2265257. PMID 18191225.
^ Qifti A, Balaji S, Scarlata S (June 2022). "Deformation of caveolae impacts global transcription and translation processes through relocalization of cavin-1". The Journal of Biological Chemistry. 298 (6): 102005. doi:10.1016/j.jbc.2022.102005. PMC 9168624. PMID 35513070.
^ Mason SW, Sander EE, Grummt I (January 1997). "Identification of a transcript release activity acting on ternary transcription complexes containing murine RNA polymerase I". The EMBO Journal. 16 (1): 163–172. doi:10.1093/emboj/16.1.163. PMC 1169623. PMID 9009277.
^ Jansa P, Mason SW, Hoffmann-Rohrer U, Grummt I (May 1998). "Cloning and functional characterization of PTRF, a novel protein which induces dissociation of paused ternary transcription complexes". The EMBO Journal. 17 (10): 2855–2864. doi:10.1093/emboj/17.10.2855. PMC 1170626. PMID 9582279.
^ Aboulaich N, Vainonen JP, Strålfors P, Vener AV (October 2004). "Vectorial proteomics reveal targeting, phosphorylation and specific fragmentation of polymerase I and transcript release factor (PTRF) at the surface of caveolae in human adipocytes". The Biochemical Journal. 383 (Pt 2): 237–248. doi:10.1042/BJ20040647. PMC 1134064. PMID 15242332.
^ Kovtun O, Tillu VA, Ariotti N, Parton RG, Collins BM (April 2015). "Cavin family proteins and the assembly of caveolae". Journal of Cell Science. 128 (7): 1269–1278. doi:10.1242/jcs.167866. PMC 4379724. PMID 25829513.
^ Hasegawa T, Takeuchi A, Miyaishi O, Xiao H, Mao J, Isobe K (April 2000). "PTRF (polymerase I and transcript-release factor) is tissue-specific and interacts with the BFCOL1 (binding factor of a type-I collagen promoter) zinc-finger transcription factor which binds to the two mouse type-I collagen gene promoters". The Biochemical Journal. 347 Pt 1 (Pt 1): 55–59. doi:10.1042/0264-6021:3470055. PMC 1220930. PMID 10727401.

Jansa P, Mason SW, Hoffmann-Rohrer U, Grummt I (May 1998). "Cloning and functional characterization of PTRF, a novel protein which induces dissociation of paused ternary transcription complexes". The EMBO Journal. 17 (10): 2855–2864. doi:10.1093/emboj/17.10.2855. PMC 1170626. PMID 9582279.
Hasegawa T, Takeuchi A, Miyaishi O, Xiao H, Mao J, Isobe K (April 2000). "PTRF (polymerase I and transcript-release factor) is tissue-specific and interacts with the BFCOL1 (binding factor of a type-I collagen promoter) zinc-finger transcription factor which binds to the two mouse type-I collagen gene promoters". The Biochemical Journal. 347 Pt 1 (Pt 1): 55–59. doi:10.1042/0264-6021:3470055. PMC 1220930. PMID 10727401.
Aboulaich N, Vainonen JP, Strålfors P, Vener AV (October 2004). "Vectorial proteomics reveal targeting, phosphorylation and specific fragmentation of polymerase I and transcript release factor (PTRF) at the surface of caveolae in human adipocytes". The Biochemical Journal. 383 (Pt 2): 237–248. doi:10.1042/BJ20040647. PMC 1134064. PMID 15242332.
Rush J, Moritz A, Lee KA, Guo A, Goss VL, Spek EJ, et al. (January 2005). "Immunoaffinity profiling of tyrosine phosphorylation in cancer cells". Nature Biotechnology. 23 (1): 94–101. doi:10.1038/nbt1046. PMID 15592455. S2CID 7200157.
Zhang Y, Wolf-Yadlin A, Ross PL, Pappin DJ, Rush J, Lauffenburger DA, White FM (September 2005). "Time-resolved mass spectrometry of tyrosine phosphorylation sites in the epidermal growth factor receptor signaling network reveals dynamic modules". Molecular & Cellular Proteomics. 4 (9): 1240–1250. doi:10.1074/mcp.M500089-MCP200. PMID 15951569.
Aboulaich N, Ortegren U, Vener AV, Strålfors P (November 2006). "Association and insulin regulated translocation of hormone-sensitive lipase with PTRF". Biochemical and Biophysical Research Communications. 350 (3): 657–661. doi:10.1016/j.bbrc.2006.09.094. PMID 17026959.
Olsen JV, Blagoev B, Gnad F, Macek B, Kumar C, Mortensen P, Mann M (November 2006). "Global, in vivo, and site-specific phosphorylation dynamics in signaling networks". Cell. 127 (3): 635–648. doi:10.1016/j.cell.2006.09.026. PMID 17081983. S2CID 7827573.

This article on a gene on human chromosome 17 is a stub. You can help Wikipedia by expanding it.

[refGRCh38Ensembl-1] GRCh38: Ensembl release 89: ENSG00000177469 – Ensembl, May 2017

[refGRCm38Ensembl-2] GRCm38: Ensembl release 89: ENSMUSG00000004044 – Ensembl, May 2017

[3] "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[4] "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[entrez-5] "Entrez Gene: PTRF polymerase I and transcript release factor".

[6] "CAVIN1 Symbol Report | HUGO Gene Nomenclature Committee". www.genenames.org. Retrieved 2017-05-30.

[7] Hill MM, Bastiani M, Luetterforst R, Kirkham M, Kirkham A, Nixon SJ, et al. (January 2008). "PTRF-Cavin, a conserved cytoplasmic protein required for caveola formation and function". Cell. 132 (1): 113–124. doi:10.1016/j.cell.2007.11.042. PMC 2265257. PMID 18191225.

[8] Qifti A, Balaji S, Scarlata S (June 2022). "Deformation of caveolae impacts global transcription and translation processes through relocalization of cavin-1". The Journal of Biological Chemistry. 298 (6): 102005. doi:10.1016/j.jbc.2022.102005. PMC 9168624. PMID 35513070.

[pmid9009277-9] Mason SW, Sander EE, Grummt I (January 1997). "Identification of a transcript release activity acting on ternary transcription complexes containing murine RNA polymerase I". The EMBO Journal. 16 (1): 163–172. doi:10.1093/emboj/16.1.163. PMC 1169623. PMID 9009277.

[pmid9582279-10] Jansa P, Mason SW, Hoffmann-Rohrer U, Grummt I (May 1998). "Cloning and functional characterization of PTRF, a novel protein which induces dissociation of paused ternary transcription complexes". The EMBO Journal. 17 (10): 2855–2864. doi:10.1093/emboj/17.10.2855. PMC 1170626. PMID 9582279.

[pmid15242332-11] Aboulaich N, Vainonen JP, Strålfors P, Vener AV (October 2004). "Vectorial proteomics reveal targeting, phosphorylation and specific fragmentation of polymerase I and transcript release factor (PTRF) at the surface of caveolae in human adipocytes". The Biochemical Journal. 383 (Pt 2): 237–248. doi:10.1042/BJ20040647. PMC 1134064. PMID 15242332.

[12] Kovtun O, Tillu VA, Ariotti N, Parton RG, Collins BM (April 2015). "Cavin family proteins and the assembly of caveolae". Journal of Cell Science. 128 (7): 1269–1278. doi:10.1242/jcs.167866. PMC 4379724. PMID 25829513.

[pmid10727401-13] Hasegawa T, Takeuchi A, Miyaishi O, Xiao H, Mao J, Isobe K (April 2000). "PTRF (polymerase I and transcript-release factor) is tissue-specific and interacts with the BFCOL1 (binding factor of a type-I collagen promoter) zinc-finger transcription factor which binds to the two mouse type-I collagen gene promoters". The Biochemical Journal. 347 Pt 1 (Pt 1): 55–59. doi:10.1042/0264-6021:3470055. PMC 1220930. PMID 10727401.

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PTRF

Function

Interactions

References

Further reading