Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
PAPOLA
Introduction
Poly(A) polymerase alpha is an enzyme that in humans is encoded by the PAPOLA gene.[1][2][3]
PAPOLA binds to FIP1L1 (Factor interacting with PAPOLA and CPSF1), a subunit of the cleavage and polyadenylation specificity factor subunit 1 (CPSF1) complex. This complex polyadenylates the 3′ end of precursor mRNAs (pre-mRNA) (see CPSF). CPSF1 is an RNA processing protein that binds to uracil-rich sequences in pre-mRNA, binds with and stimulates POPOLA’s Polynucleotide adenylyltransferase activity, and thereby adds adenylyl residues to pre-mRNA. This poly-adenylyl action increases pre mRNA’s maturation and movement from the nucleus to cytoplasm while dramatically increasing the stability of the mRNA formed from pre-mRNA: FIP1L1 is a Pre-mRNA 3′-end-processing factor. FIP1L1 gene fusions between it and either the platelet-derived growth factor receptor, alpha (PGDFRA) or Retinoic acid receptor alpha (RARA) genes are causes of certain human diseases associated with pathologically increased levels of blood eosinophils and/or Leukemias.[4][4]
References
References
- ↑ Thuresson AC, Astrom J, Astrom A, Gronvik KO, Virtanen A (Mar 1994). “Multiple forms of poly(A) polymerases in human cells”. Proc Natl Acad Sci U S A. 91 (3): 979–83. doi:10.1073/pnas.91.3.979. PMC 521437. PMID 8302877.
- ↑ Yamauchi T, Sugimoto J, Hatakeyama T, Asakawa S, Shimizu N, Isobe M (Sep 1999). “Assignment of the human poly(A) polymerase (PAP) gene to chromosome 14q32.1-q32.2 and isolation of a polymorphic CA repeat sequence”. J Hum Genet. 44 (4): 253–5. doi:10.1007/s100380050154. PMID 10429366.
- ↑ “Entrez Gene: PAPOLA poly(A) polymerase alpha”.
- ↑ 4.0 4.1 https://www.ncbi.nlm.nih.gov/gene/81608
Further reading
Further reading
- Weichs an der Glon C, Ashe M, Eggermont J, Proudfoot NJ (1993). “Tat-dependent occlusion of the HIV poly(A) site”. EMBO J. 12 (5): 2119–28. PMC 413433. PMID 8491200.
- Pendurthi UR, Alok D, Rao LV (1997). “Binding of factor VIIa to tissue factor induces alterations in gene expression in human fibroblast cells: up-regulation of poly(A) polymerase”. Proc. Natl. Acad. Sci. U.S.A. 94 (23): 12598–603. doi:10.1073/pnas.94.23.12598. PMC 25051. PMID 9356495.
- Varani L, Gunderson SI, Mattaj IW, et al. (2000). “The NMR structure of the 38 kDa U1A protein – PIE RNA complex reveals the basis of cooperativity in regulation of polyadenylation by human U1A protein”. Nat. Struct. Biol. 7 (4): 329–35. doi:10.1038/74101. PMID 10742179.
- Mouland AJ, Coady M, Yao XJ, Cohen EA (2002). “Hypophosphorylation of poly(A) polymerase and increased polyadenylation activity are associated with human immunodeficiency virus type 1 Vpr expression”. Virology. 292 (2): 321–30. doi:10.1006/viro.2001.1261. PMID 11878934.
- Strausberg RL, Feingold EA, Grouse LH, et al. (2003). “Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences”. Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
- Kim H, Lee JH, Lee Y (2003). “Regulation of poly(A) polymerase by 14-3-3epsilon”. EMBO J. 22 (19): 5208–19. doi:10.1093/emboj/cdg486. PMC 204469. PMID 14517258.
- Ota T, Suzuki Y, Nishikawa T, et al. (2004). “Complete sequencing and characterization of 21,243 full-length human cDNAs”. Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
- Bouwmeester T, Bauch A, Ruffner H, et al. (2004). “A physical and functional map of the human TNF-alpha/NF-kappa B signal transduction pathway”. Nat. Cell Biol. 6 (2): 97–105. doi:10.1038/ncb1086. PMID 14743216.
- Kaufmann I, Martin G, Friedlein A, et al. (2005). “Human Fip1 is a subunit of CPSF that binds to U-rich RNA elements and stimulates poly(A) polymerase”. EMBO J. 23 (3): 616–26. doi:10.1038/sj.emboj.7600070. PMC 1271804. PMID 14749727.
- Dettwiler S, Aringhieri C, Cardinale S, et al. (2005). “Distinct sequence motifs within the 68-kDa subunit of cleavage factor Im mediate RNA binding, protein-protein interactions, and subcellular localization”. J. Biol. Chem. 279 (34): 35788–97. doi:10.1074/jbc.M403927200. PMID 15169763.
- Colland F, Jacq X, Trouplin V, et al. (2004). “Functional proteomics mapping of a human signaling pathway”. Genome Res. 14 (7): 1324–32. doi:10.1101/gr.2334104. PMC 442148. PMID 15231748.
- Beausoleil SA, Jedrychowski M, Schwartz D, et al. (2004). “Large-scale characterization of HeLa cell nuclear phosphoproteins”. Proc. Natl. Acad. Sci. U.S.A. 101 (33): 12130–5. doi:10.1073/pnas.0404720101. PMC 514446. PMID 15302935.
- Gerhard DS, Wagner L, Feingold EA, et al. (2004). “The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)”. Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
- Rual JF, Venkatesan K, Hao T, et al. (2005). “Towards a proteome-scale map of the human protein-protein interaction network”. Nature. 437 (7062): 1173–8. doi:10.1038/nature04209. PMID 16189514.