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{{Infobox_gene}}
{{PBB_Controls
'''PRP31 pre-mRNA processing factor 31 homolog (S. cerevisiae)''', also known as '''PRPF31''', is a [[protein]] which in humans is encoded by the ''PRPF31'' [[gene]].<ref name="pmid11545739"/>
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== Function ==
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PRPF31 is the gene coding for the [[splicing factor]] hPRP31. It is essential for the formation of the [[spliceosome]] hPRP31 is associated with the [[U4 spliceosomal RNA|U4]]/[[U6 spliceosomal RNA|U4]] di-snRNP and interacts with another splicing factor, h[[PRPF6|PRP6]], to form the U4/U6-[[U5 spliceosomal RNA|U5]] tri-snRNP. It has been shown that when hPRP31 is knocked down by [[RNA interference|RNAi]], U4/U6 di-snPRNPs accumulate in the [[Cajal body|Cajal bodies]] and the U4/U6-U5 tri-snRNP cannot form.<ref name="pmid15257298">{{cite journal | vauthors = Schaffert N, Hossbach M, Heintzmann R, Achsel T, Lührmann R | title = RNAi knockdown of hPrp31 leads to an accumulation of U4/U6 di-snRNPs in Cajal bodies | journal = EMBO J. | volume = 23 | issue = 15 | pages = 3000–9 |date=August 2004 | pmid = 15257298 | pmc = 514917 | doi = 10.1038/sj.emboj.7600296 | url =  }}</ref>
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PRPF31 is recruited to [[intron]]s following the attachment of U4 and U6 RNAs and the 15.5K protein [[NHP2L1]]. The addition of PRPF31 is crucial for the transition of the spliceosomal complex to the activated state.<ref name="pmid17412961">{{cite journal | vauthors = Liu S, Li P, Dybkov O, Nottrott S, Hartmuth K, Lührmann R, Carlomagno T, Wahl MC | title = Binding of the human Prp31 Nop domain to a composite RNA-protein platform in U4 snRNP | journal = Science | volume = 316 | issue = 5821 | pages = 115–20 |date=April 2007 | pmid = 17412961 | doi = 10.1126/science.1137924 | url =  }}</ref>
 
== Clinical significance ==
 
A mutation in PRPF31 is one of 4 known mutations in splicing factors which are known to cause [[retinitis pigmentosa]]. The first mutation in PRPF31 was discovered by Vithana et al. in 2001.<ref name="pmid11545739">{{cite journal | vauthors = Vithana EN, Abu-Safieh L, Allen MJ, Carey A, Papaioannou M, Chakarova C, Al-Maghtheh M, Ebenezer ND, Willis C, Moore AT, Bird AC, Hunt DM, Bhattacharya SS | title = A human homolog of yeast pre-mRNA splicing gene, PRP31, underlies autosomal dominant retinitis pigmentosa on chromosome 19q13.4 (RP11) | journal = Mol. Cell | volume = 8 | issue = 2 | pages = 375–81 |date=August 2001 | pmid = 11545739 | doi = 10.1016/S1097-2765(01)00305-7  | url =   }}</ref> Retinitis pigmentosa (RP) is a clinically and genetically heterogeneous group of retinal dystrophies characterized by a progressive degeneration of [[Photoreceptor cell|photoreceptor]]s, eventually resulting in severe visual impairment.<ref name="entrez">{{cite web | title = Entrez Gene: PRPF31 PRP31 pre-mRNA processing factor 31 homolog (S. cerevisiae)| url = https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=26121| accessdate = }}</ref>


<!-- The GNF_Protein_box is automatically maintained by Protein Box Bot.  See Template:PBB_Controls to Stop updates. -->
== Inheritance ==
{{GNF_Protein_box
| image = PBB_Protein_PRPF31_image.jpg
| image_source = [[Protein_Data_Bank|PDB]] rendering based on 2ozb.
| PDB = {{PDB2|2ozb}}
| Name = PRP31 pre-mRNA processing factor 31 homolog (S. cerevisiae)
| HGNCid = 15446
| Symbol = PRPF31
| AltSymbols =; DKFZp566J153; NY-BR-99; PRP31; RP11
| OMIM = 606419
| ECnumber = 
| Homologene = 5980
| MGIid = 1916238
| Function = {{GNF_GO|id=GO:0005515 |text = protein binding}} {{GNF_GO|id=GO:0043021 |text = ribonucleoprotein binding}}
| Component = {{GNF_GO|id=GO:0005634 |text = nucleus}} {{GNF_GO|id=GO:0005681 |text = spliceosome}} {{GNF_GO|id=GO:0015030 |text = Cajal body}} {{GNF_GO|id=GO:0016607 |text = nuclear speck}} {{GNF_GO|id=GO:0046540 |text = U4/U6 x U5 tri-snRNP complex}}
| Process = {{GNF_GO|id=GO:0000351 |text = assembly of spliceosomal tri-snRNP U4/U6.U5}} {{GNF_GO|id=GO:0000398 |text = nuclear mRNA splicing, via spliceosome}} {{GNF_GO|id=GO:0008380 |text = RNA splicing}}
| Orthologs = {{GNF_Ortholog_box
    | Hs_EntrezGene = 26121
    | Hs_Ensembl = ENSG00000105618
    | Hs_RefseqProtein = NP_056444
    | Hs_RefseqmRNA = NM_015629
    | Hs_GenLoc_db = 
    | Hs_GenLoc_chr = 19
    | Hs_GenLoc_start = 59310649
    | Hs_GenLoc_end = 59326952
    | Hs_Uniprot = Q8WWY3
    | Mm_EntrezGene = 68988
    | Mm_Ensembl = ENSMUSG00000008373
    | Mm_RefseqmRNA = NM_027328
    | Mm_RefseqProtein = NP_081604
    | Mm_GenLoc_db = 
    | Mm_GenLoc_chr = 7
    | Mm_GenLoc_start = 3233114
    | Mm_GenLoc_end = 3245335
    | Mm_Uniprot = Q8CCF0
  }}
}}
'''PRP31 pre-mRNA processing factor 31 homolog (S. cerevisiae)''', also known as '''PRPF31''', is a human [[gene]].<ref name="entrez">{{cite web | title = Entrez Gene: PRPF31 PRP31 pre-mRNA processing factor 31 homolog (S. cerevisiae)| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=26121| accessdate = }}</ref>


<!-- The PBB_Summary template is automatically maintained by Protein Box Bot. See Template:PBB_Controls to Stop updates. -->
Mutations in PRPF31 are inherited in an [[autosomal dominant]] manner, accounting for 2.5% of cases of [[autosomal dominant]] [[retinitis pigmentosa]] (adRP) in a mixed UK population.<ref name="pmid17325180">{{cite journal | vauthors = Waseem NH, Vaclavik V, Webster A, Jenkins SA, Bird AC, Bhattacharya SS | title = Mutations in the gene coding for the pre-mRNA splicing factor, PRPF31, in patients with autosomal dominant retinitis pigmentosa | journal = Investigative Ophthalmology & Visual Science | volume = 48 | issue = 3 | pages = 1330–4 |date=March 2007 | pmid = 17325180 | doi = 10.1167/iovs.06-0963 | url =  }}</ref> However, the inheritance pattern of PRPF31 mutations is atypical of dominant inheritance, showing the phenomenon of [[partial penetrance]], whereby a dominant mutations appear to "skip" generations. This is thought to be due to the presence of two [[wild type]] alleles, a high-expressivity [[allele]] and a low-expressivity allele. If a patient has a mutant allele and a high-expressivity allele, they do not show disease phenotype. If a patient has a mutant allele and a low-expressivity allele, the residual level of protein falls beneath the threahold for normal function, and so they do show disease phenotype. The inheritance pattern of PRPF31 can therefore be thought of as a variation of [[haploinsufficiency]]. This variant of haploinsufficiency is only seen in two other human diseases: [[Erythropoietic protoporphyria]], caused by mutations in the [[Ferrochelatase|FECH]] gene; and [[hereditary elliptocytosis]], caused by mutations in the [[spectrin]] gene.<ref name="pmid7819065">{{cite journal | vauthors = Randon J, Boulanger L, Marechal J, Garbarz M, Vallier A, Ribeiro L, Tamagnini G, Dhermy D, Delaunay J | title = A variant of spectrin low-expression allele alpha LELY carrying a hereditary elliptocytosis mutation in codon 28 | journal = Br J Haematol. | volume = 88 | issue = 3 | pages = 534–40 |date=Nov 1994 | pmid = 7819065 | doi = 10.1111/j.1365-2141.1994.tb05070.x}}</ref><ref name="pmid10068685">{{cite journal | vauthors = Gouya L, Puy H, Lamoril J, Da Silva V, Grandchamp B, Nordmann Y, Deybach JC | title = Inheritance in erythropoietic protoporphyria: a common wild-type ferrochelatase allelic variant with low expression accounts for clinical manifestation | journal = Am J Hum Genet  | volume = 93 | issue = 6 | pages = 2150–10 |date=Jun 1998 | pmid =10068685 }}</ref>
{{PBB_Summary
| section_title =  
| summary_text = Retinitis pigmentosa (RP) is a clinically and genetically heterogeneous group of retinal dystrophies characterized by a progressive degeneration of photoreceptors, eventually resulting in severe visual impairment. For further background and phenotypic information on RP, see MIM 268000.[supplied by OMIM]<ref name="entrez">{{cite web | title = Entrez Gene: PRPF31 PRP31 pre-mRNA processing factor 31 homolog (S. cerevisiae)| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=26121| accessdate = }}</ref>
}}


==References==
==References==
{{reflist|2}}
{{reflist}}
 
==Further reading==
==Further reading==
{{refbegin | 2}}
{{refbegin | 2}}
{{PBB_Further_reading  
{{PBB_Further_reading  
| citations =  
| citations =  
*{{cite journal  | author=Tarizzo ML |title=The World Health Organization and the prevention of blindness. |journal=Transactions. Section on Ophthalmology.  American Academy of Ophthalmology and Otolaryngology |volume=79 |issue= 3 Pt 2 |pages= OP453-6 |year= 1975 |pmid= 1154573 |doi=  }}
*{{cite journal  | author=Tarizzo ML |title=The World Health Organization and the prevention of blindness |journal=Transactions. Section on Ophthalmology.  American Academy of Ophthalmology and Otolaryngology |volume=79 |issue= 3 Pt 2 |pages= OP453–6 |year= 1975 |pmid= 1154573 |doi=  }}
*{{cite journal | author=al-Maghtheh M, Inglehearn CF, Keen TJ, ''et al.'' |title=Identification of a sixth locus for autosomal dominant retinitis pigmentosa on chromosome 19. |journal=Hum. Mol. Genet. |volume=3 |issue= 2 |pages= 351-4 |year= 1994 |pmid= 8004108 |doi=  }}
*{{cite journal   |vauthors=al-Maghtheh M, Inglehearn CF, Keen TJ, etal |title=Identification of a sixth locus for autosomal dominant retinitis pigmentosa on chromosome 19 |journal=Hum. Mol. Genet. |volume=3 |issue= 2 |pages= 351–4 |year= 1994 |pmid= 8004108 |doi=10.1093/hmg/3.2.351 }}
*{{cite journal | author=Al-Maghtheh M, Vithana E, Tarttelin E, ''et al.'' |title=Evidence for a major retinitis pigmentosa locus on 19q13.4 (RP11) and association with a unique bimodal expressivity phenotype. |journal=Am. J. Hum. Genet. |volume=59 |issue= 4 |pages= 864-71 |year= 1996 |pmid= 8808602 |doi=  }}
*{{cite journal   |vauthors=Al-Maghtheh M, Vithana E, Tarttelin E, etal |title=Evidence for a major retinitis pigmentosa locus on 19q13.4 (RP11) and association with a unique bimodal expressivity phenotype |journal=Am. J. Hum. Genet. |volume=59 |issue= 4 |pages= 864–71 |year= 1996 |pmid= 8808602 |doi= | pmc=1914817 }}
*{{cite journal  | author=Hartley JL, Temple GF, Brasch MA |title=DNA cloning using in vitro site-specific recombination. |journal=Genome Res. |volume=10 |issue= 11 |pages= 1788-95 |year= 2001 |pmid= 11076863 |doi=  }}
*{{cite journal  | vauthors=Hartley JL, Temple GF, Brasch MA |title=DNA Cloning Using In Vitro Site-Specific Recombination |journal=Genome Res. |volume=10 |issue= 11 |pages= 1788–95 |year= 2001 |pmid= 11076863 |doi=10.1101/gr.143000  | pmc=310948 }}
*{{cite journal | author=Wiemann S, Weil B, Wellenreuther R, ''et al.'' |title=Toward a catalog of human genes and proteins: sequencing and analysis of 500 novel complete protein coding human cDNAs. |journal=Genome Res. |volume=11 |issue= 3 |pages= 422-35 |year= 2001 |pmid= 11230166 |doi= 10.1101/gr.154701 }}
*{{cite journal   |vauthors=Wiemann S, Weil B, Wellenreuther R, etal |title=Toward a Catalog of Human Genes and Proteins: Sequencing and Analysis of 500 Novel Complete Protein Coding Human cDNAs |journal=Genome Res. |volume=11 |issue= 3 |pages= 422–35 |year= 2001 |pmid= 11230166 |doi= 10.1101/gr.GR1547R  | pmc=311072}}
*{{cite journal | author=Simpson JC, Wellenreuther R, Poustka A, ''et al.'' |title=Systematic subcellular localization of novel proteins identified by large-scale cDNA sequencing. |journal=EMBO Rep. |volume=1 |issue= 3 |pages= 287-92 |year= 2001 |pmid= 11256614 |doi= 10.1093/embo-reports/kvd058 }}
*{{cite journal   |vauthors=Simpson JC, Wellenreuther R, Poustka A, etal |title=Systematic subcellular localization of novel proteins identified by large-scale cDNA sequencing |journal=EMBO Rep. |volume=1 |issue= 3 |pages= 287–92 |year= 2001 |pmid= 11256614 |doi= 10.1093/embo-reports/kvd058 | pmc=1083732 }}
*{{cite journal | author=Vithana EN, Abu-Safieh L, Allen MJ, ''et al.'' |title=A human homolog of yeast pre-mRNA splicing gene, PRP31, underlies autosomal dominant retinitis pigmentosa on chromosome 19q13.4 (RP11). |journal=Mol. Cell |volume=8 |issue= 2 |pages= 375-81 |year= 2001 |pmid= 11545739 |doi=  }}
*{{cite journal   |vauthors=Vithana EN, Abu-Safieh L, Allen MJ, etal |title=A human homolog of yeast pre-mRNA splicing gene, PRP31, underlies autosomal dominant retinitis pigmentosa on chromosome 19q13.4 (RP11) |journal=Mol. Cell |volume=8 |issue= 2 |pages= 375–81 |year= 2001 |pmid= 11545739 |doi=10.1016/S1097-2765(01)00305-7 }}
*{{cite journal | author=Makarova OV, Makarov EM, Liu S, ''et al.'' |title=Protein 61K, encoded by a gene (PRPF31) linked to autosomal dominant retinitis pigmentosa, is required for U4/U6*U5 tri-snRNP formation and pre-mRNA splicing. |journal=EMBO J. |volume=21 |issue= 5 |pages= 1148-57 |year= 2002 |pmid= 11867543 |doi= 10.1093/emboj/21.5.1148 }}
*{{cite journal   |vauthors=Makarova OV, Makarov EM, Liu S, etal |title=Protein 61K, encoded by a gene (PRPF31) linked to autosomal dominant retinitis pigmentosa, is required for U4/U6·U5 tri-snRNP formation and pre-mRNA splicing |journal=EMBO J. |volume=21 |issue= 5 |pages= 1148–57 |year= 2002 |pmid= 11867543 |doi= 10.1093/emboj/21.5.1148 | pmc=125353 }}
*{{cite journal | author=Deery EC, Vithana EN, Newbold RJ, ''et al.'' |title=Disease mechanism for retinitis pigmentosa (RP11) caused by mutations in the splicing factor gene PRPF31. |journal=Hum. Mol. Genet. |volume=11 |issue= 25 |pages= 3209-19 |year= 2003 |pmid= 12444105 |doi= }}
*{{cite journal   |vauthors=Deery EC, Vithana EN, Newbold RJ, etal |title=Disease mechanism for retinitis pigmentosa (RP11) caused by mutations in the splicing factor gene PRPF31 |journal=Hum. Mol. Genet. |volume=11 |issue= 25 |pages= 3209–19 |year= 2003 |pmid= 12444105 |doi=10.1093/hmg/11.25.3209  }}
*{{cite journal | author=Strausberg RL, Feingold EA, Grouse LH, ''et al.'' |title=Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences. |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=99 |issue= 26 |pages= 16899-903 |year= 2003 |pmid= 12477932 |doi= 10.1073/pnas.242603899 }}
*{{cite journal   |vauthors=Strausberg RL, Feingold EA, Grouse LH, etal |title=Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=99 |issue= 26 |pages= 16899–903 |year= 2003 |pmid= 12477932 |doi= 10.1073/pnas.242603899 | pmc=139241 }}
*{{cite journal | author=Martínez-Gimeno M, Gamundi MJ, Hernan I, ''et al.'' |title=Mutations in the pre-mRNA splicing-factor genes PRPF3, PRPF8, and PRPF31 in Spanish families with autosomal dominant retinitis pigmentosa. |journal=Invest. Ophthalmol. Vis. Sci. |volume=44 |issue= 5 |pages= 2171-7 |year= 2003 |pmid= 12714658 |doi= }}
*{{cite journal   |vauthors=Martínez-Gimeno M, Gamundi MJ, Hernan I, etal |title=Mutations in the pre-mRNA splicing-factor genes PRPF3, PRPF8, and PRPF31 in Spanish families with autosomal dominant retinitis pigmentosa |journal=Invest. Ophthalmol. Vis. Sci. |volume=44 |issue= 5 |pages= 2171–7 |year= 2003 |pmid= 12714658 |doi=10.1167/iovs.02-0871  }}
*{{cite journal | author=Scanlan MJ, Gout I, Gordon CM, ''et al.'' |title=Humoral immunity to human breast cancer: antigen definition and quantitative analysis of mRNA expression. |journal=Cancer Immun. |volume=1 |issue=  |pages= 4 |year= 2003 |pmid= 12747765 |doi=  }}
*{{cite journal   |vauthors=Scanlan MJ, Gout I, Gordon CM, etal |title=Humoral immunity to human breast cancer: antigen definition and quantitative analysis of mRNA expression |journal=Cancer Immun. |volume=1 |issue=  |pages= 4 |year= 2003 |pmid= 12747765 |doi=  }}
*{{cite journal | author=Wang L, Ribaudo M, Zhao K, ''et al.'' |title=Novel deletion in the pre-mRNA splicing gene PRPF31 causes autosomal dominant retinitis pigmentosa in a large Chinese family. |journal=Am. J. Med. Genet. A |volume=121 |issue= 3 |pages= 235-9 |year= 2003 |pmid= 12923864 |doi= 10.1002/ajmg.a.20224 }}
*{{cite journal   |vauthors=Wang L, Ribaudo M, Zhao K, etal |title=Novel Deletion in the Pre-mRNA Splicing Gene PRPF31 Causes Autosomal Dominant Retinitis Pigmentosa in a Large Chinese Family |journal=Am. J. Med. Genet. A |volume=121 |issue= 3 |pages= 235–9 |year= 2003 |pmid= 12923864 |doi= 10.1002/ajmg.a.20224 | pmc=1579744 }}
*{{cite journal | author=Reuter TY, Medhurst AL, Waisfisz Q, ''et al.'' |title=Yeast two-hybrid screens imply involvement of Fanconi anemia proteins in transcription regulation, cell signaling, oxidative metabolism, and cellular transport. |journal=Exp. Cell Res. |volume=289 |issue= 2 |pages= 211-21 |year= 2003 |pmid= 14499622 |doi=  }}
*{{cite journal   |vauthors=Reuter TY, Medhurst AL, Waisfisz Q, etal |title=Yeast two-hybrid screens imply involvement of Fanconi anemia proteins in transcription regulation, cell signaling, oxidative metabolism, and cellular transport |journal=Exp. Cell Res. |volume=289 |issue= 2 |pages= 211–21 |year= 2003 |pmid= 14499622 |doi=10.1016/S0014-4827(03)00261-1 }}
*{{cite journal | author=Vithana EN, Abu-Safieh L, Pelosini L, ''et al.'' |title=Expression of PRPF31 mRNA in patients with autosomal dominant retinitis pigmentosa: a molecular clue for incomplete penetrance? |journal=Invest. Ophthalmol. Vis. Sci. |volume=44 |issue= 10 |pages= 4204-9 |year= 2003 |pmid= 14507862 |doi=  }}
*{{cite journal   |vauthors=Vithana EN, Abu-Safieh L, Pelosini L, etal |title=Expression of PRPF31 mRNA in patients with autosomal dominant retinitis pigmentosa: a molecular clue for incomplete penetrance? |journal=Invest. Ophthalmol. Vis. Sci. |volume=44 |issue= 10 |pages= 4204–9 |year= 2003 |pmid= 14507862 |doi=10.1167/iovs.03-0253 }}
*{{cite journal | author=Ota T, Suzuki Y, Nishikawa T, ''et al.'' |title=Complete sequencing and characterization of 21,243 full-length human cDNAs. |journal=Nat. Genet. |volume=36 |issue= 1 |pages= 40-5 |year= 2004 |pmid= 14702039 |doi= 10.1038/ng1285 }}
*{{cite journal   |vauthors=Ota T, Suzuki Y, Nishikawa T, etal |title=Complete sequencing and characterization of 21,243 full-length human cDNAs |journal=Nat. Genet. |volume=36 |issue= 1 |pages= 40–5 |year= 2004 |pmid= 14702039 |doi= 10.1038/ng1285 }}
*{{cite journal | author=Grimwood J, Gordon LA, Olsen A, ''et al.'' |title=The DNA sequence and biology of human chromosome 19. |journal=Nature |volume=428 |issue= 6982 |pages= 529-35 |year= 2004 |pmid= 15057824 |doi= 10.1038/nature02399 }}
*{{cite journal   |vauthors=Grimwood J, Gordon LA, Olsen A, etal |title=The DNA sequence and biology of human chromosome 19 |journal=Nature |volume=428 |issue= 6982 |pages= 529–35 |year= 2004 |pmid= 15057824 |doi= 10.1038/nature02399 }}
*{{cite journal | author=Xia K, Zheng D, Pan Q, ''et al.'' |title=A novel PRPF31 splice-site mutation in a Chinese family with autosomal dominant retinitis pigmentosa. |journal=Mol. Vis. |volume=10 |issue=  |pages= 361-5 |year= 2004 |pmid= 15162096 |doi=  }}
*{{cite journal   |vauthors=Xia K, Zheng D, Pan Q, etal |title=A novel PRPF31 splice-site mutation in a Chinese family with autosomal dominant retinitis pigmentosa |journal=Mol. Vis. |volume=10 |issue=  |pages= 361–5 |year= 2004 |pmid= 15162096 |doi=  }}
*{{cite journal | author=Schaffert N, Hossbach M, Heintzmann R, ''et al.'' |title=RNAi knockdown of hPrp31 leads to an accumulation of U4/U6 di-snRNPs in Cajal bodies. |journal=EMBO J. |volume=23 |issue= 15 |pages= 3000-9 |year= 2005 |pmid= 15257298 |doi= 10.1038/sj.emboj.7600296 }}
*{{cite journal   |vauthors=Schaffert N, Hossbach M, Heintzmann R, etal |title=RNAi knockdown of hPrp31 leads to an accumulation of U4/U6 di-snRNPs in Cajal bodies |journal=EMBO J. |volume=23 |issue= 15 |pages= 3000–9 |year= 2005 |pmid= 15257298 |doi= 10.1038/sj.emboj.7600296 | pmc=514917 }}
*{{cite journal | author=Gerhard DS, Wagner L, Feingold EA, ''et al.'' |title=The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). |journal=Genome Res. |volume=14 |issue= 10B |pages= 2121-7 |year= 2004 |pmid= 15489334 |doi= 10.1101/gr.2596504 }}
*{{cite journal   |vauthors=Gerhard DS, Wagner L, Feingold EA, etal |title=The Status, Quality, and Expansion of the NIH Full-Length cDNA Project: The Mammalian Gene Collection (MGC) |journal=Genome Res. |volume=14 |issue= 10B |pages= 2121–7 |year= 2004 |pmid= 15489334 |doi= 10.1101/gr.2596504 | pmc=528928 }}
}}
}}
{{refend}}
{{refend}}


{{protein-stub}}
==External links==
{{WikiDoc Sources}}
* [https://www.ncbi.nlm.nih.gov/books/NBK1417/  GeneReviews/NCBI/NIH/UW entry on Retinitis Pigmentosa Overview]
 
{{PDB Gallery|geneid=26121}}
 
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{{Post transcriptional modification}}
 
[[Category:Spliceosome]]

Revision as of 18:45, 7 September 2017

VALUE_ERROR (nil)
Identifiers
Aliases
External IDsGeneCards: [1]
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

n/a

n/a

RefSeq (protein)

n/a

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Location (UCSC)n/an/a
PubMed searchn/an/a
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View/Edit Human

PRP31 pre-mRNA processing factor 31 homolog (S. cerevisiae), also known as PRPF31, is a protein which in humans is encoded by the PRPF31 gene.[1]

Function

PRPF31 is the gene coding for the splicing factor hPRP31. It is essential for the formation of the spliceosome hPRP31 is associated with the U4/U4 di-snRNP and interacts with another splicing factor, hPRP6, to form the U4/U6-U5 tri-snRNP. It has been shown that when hPRP31 is knocked down by RNAi, U4/U6 di-snPRNPs accumulate in the Cajal bodies and the U4/U6-U5 tri-snRNP cannot form.[2]

PRPF31 is recruited to introns following the attachment of U4 and U6 RNAs and the 15.5K protein NHP2L1. The addition of PRPF31 is crucial for the transition of the spliceosomal complex to the activated state.[3]

Clinical significance

A mutation in PRPF31 is one of 4 known mutations in splicing factors which are known to cause retinitis pigmentosa. The first mutation in PRPF31 was discovered by Vithana et al. in 2001.[1] Retinitis pigmentosa (RP) is a clinically and genetically heterogeneous group of retinal dystrophies characterized by a progressive degeneration of photoreceptors, eventually resulting in severe visual impairment.[4]

Inheritance

Mutations in PRPF31 are inherited in an autosomal dominant manner, accounting for 2.5% of cases of autosomal dominant retinitis pigmentosa (adRP) in a mixed UK population.[5] However, the inheritance pattern of PRPF31 mutations is atypical of dominant inheritance, showing the phenomenon of partial penetrance, whereby a dominant mutations appear to "skip" generations. This is thought to be due to the presence of two wild type alleles, a high-expressivity allele and a low-expressivity allele. If a patient has a mutant allele and a high-expressivity allele, they do not show disease phenotype. If a patient has a mutant allele and a low-expressivity allele, the residual level of protein falls beneath the threahold for normal function, and so they do show disease phenotype. The inheritance pattern of PRPF31 can therefore be thought of as a variation of haploinsufficiency. This variant of haploinsufficiency is only seen in two other human diseases: Erythropoietic protoporphyria, caused by mutations in the FECH gene; and hereditary elliptocytosis, caused by mutations in the spectrin gene.[6][7]

References

  1. 1.0 1.1 Vithana EN, Abu-Safieh L, Allen MJ, Carey A, Papaioannou M, Chakarova C, Al-Maghtheh M, Ebenezer ND, Willis C, Moore AT, Bird AC, Hunt DM, Bhattacharya SS (August 2001). "A human homolog of yeast pre-mRNA splicing gene, PRP31, underlies autosomal dominant retinitis pigmentosa on chromosome 19q13.4 (RP11)". Mol. Cell. 8 (2): 375–81. doi:10.1016/S1097-2765(01)00305-7. PMID 11545739.
  2. Schaffert N, Hossbach M, Heintzmann R, Achsel T, Lührmann R (August 2004). "RNAi knockdown of hPrp31 leads to an accumulation of U4/U6 di-snRNPs in Cajal bodies". EMBO J. 23 (15): 3000–9. doi:10.1038/sj.emboj.7600296. PMC 514917. PMID 15257298.
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