Recombinant Human Polyadenylate-binding protein 2 (PABPN1)

1. The expression of Ala-expanded-PABPN1 causes the formation of nuclear aggregates before the onset of muscle weakness in oculopharyngeal muscular dystrophy. PMID: 27854203
2. The purpose of this study was to characterize the type of PABPN1 expanded alleles in a large cohort of Oculopharyngeal muscular dystrophy individuals from Mexico. PMID: 27980005
3. We propose that the extensive binding of CircPABPN1 to HuR prevents HuR binding to PABPN1 mRNA and lowers PABPN1 translation, providing the first example of competition between a circRNA and its cognate mRNA for an RBP that affects translation. PMID: 28080204
4. Whereas PABPN1 strongly increases the activity of its cognate poly(A) polymerase in vitro, Pab2 was unable to stimulate Pla1 to any significant extent. PMID: 28096519
5. The described is the mRNA degradation poly(A) tail exosome targeting (PAXT) connection, which comprises the ZFC3H1 Zn-knuckle protein as a central link between MTR4 and the nuclear poly(A)-binding protein PABPN1. PMID: 27871484
6. PABPN1 aggregates are able to trap TNNT3 pre-mRNA, driving it outside nuclear speckles, leading to an altered SC35-mediated splicing. PMID: 27507886
7. The levels of these 6 cytokines were not altered in expPABPN1 carriers at a pre-symptomatic stage, suggesting that this group of cytokines is a potential biomarker for muscle weakness in OPMD. Correlation pattern of expression levels could be a novel measurer for disease state PMID: 27506982
8. Large cohort study demonstrated that in heterozygous and homozygous patients with oculopharyngeal muscular dystrophy, the mean age at diagnosis and the severity of the clinical symptoms correlate to the number of PABPN1 (GCN) repeats. Homozygous patients showed the worse phenotype, suggesting a gene-dose effect in addition to the repeat number expansion. PMID: 28011929
9. we found a polyadenylation-dependent 3' end maturation pathway for the human telomerase RNA that relies on the nuclear poly(A)-binding protein PABPN1 and the poly(A)-specific RNase PARN. PMID: 26628368
10. Many ribozymes were assayed and validated, including four ribozymes targeting the transcript of a disease-causing gene (a mutant version of PABPN1). PMID: 26527730
11. Studied if the stability of the RNP domain of PABPN1 or domain swapping within the RNP domain may add to fibril formation. PMID: 26267866
12. This function is mediated by the concerted actions of the nuclear poly(A) binding protein PABPN1, poly(A) polymerase (PAP), and the nuclear exosome complex, a pathway we have named PABPN1 and PAP-mediated RNA decay (PPD) PMID: 26484760
13. These findings demonstrate a role for PABPN1 in rescuing several cytopathological features of TDP-43 proteinopathy by increasing the turnover of pathologic proteins. PMID: 26130692
14. PABPN1 inhibits expression of transcripts with pAs near the transcription start site (TSS), a property possibly related to its role in RNA degradation PMID: 25906188
15. this study provided a systematic phosphorylation analysis of the Fanconi anemia protein PALB2, and have revealed important roles of PALB2 Ser-157 and Ser-376 in driving cellular responses to genotoxic stress. PMID: 26420486
16. the first step of the cleavage and polyadenylation reaction, mRNA cleavage, is affected in muscles expressing alanine-expanded PABPN1. We propose that impaired cleavage is an early defect in Oculopharyngeal muscular dystrophy. PMID: 25816335
17. Data indicate that intron 6 of the poly(A)-binding protein nuclear 1 (PABPN1) gene is required for autoregulation. PMID: 25963658
18. The ability of PABPN1 to promote splicing requires its RNA binding and, to a lesser extent, poly(A)polymerase (PAP) - stimulatory functions. PMID: 25896913
19. We show that ARIH2 E3-ligase regulates PABPN1 protein accumulation and aggregation PMID: 24486325
20. Loss of PABPN1, a suppressor of APA, might promote tumor aggressiveness by releasing the cancer cells from microRNA-mediated gene regulation. PMID: 24975429
21. These results suggest that PABPN1 levels regulate muscle cell aging and oculopharyngeal muscular dystrophy represents an accelerated muscle aging disorder. PMID: 23793615
22. although function of PABPN1 may be compensated by nuclear translocation of PABP4 and perhaps by increase the cytoplasmic abundance of PABP5, these were not sufficient to prevent apoptosis of cells. PABPN1 may have an anti apoptotic role in mammalian cells PMID: 23300856
23. Concerning the frequency of the expanded (GCN)11 polymorphism in PABPN1, all 34 patients have the normal allele, correlating genotypic and phenotypic features. PMID: 22231868
24. we show that PABPN1 promotes lncRNA turnover via a polyadenylation-dependent mechanism PMID: 23166521
25. Time-lapse experiments in cultured myoblasts confirm nuclear speckles as biogenesis sites of PABPN1 inclusions in oculopharyngeal muscular dystrophy. PMID: 22249111
26. PABPN1 with a 17 alanine expansion generates stress that initiates apoptosis through a p53-dependent mechanism. PMID: 22519734
27. Taken together, the present data suggest that heterozygote OPMD patients may show some cognitive impairments and psychological disorders PMID: 21956377
28. Fibrillar PABPN1 has a structure that differs from native PABPN1 and circumstantial evidence is presented that the C-terminal domain is involved in fibril formation. PMID: 22570486
29. Results elucidate a novel function for PABPN1 as a suppressor of alternative cleavage and polyadenylation. PMID: 22502866
30. In myotubes, the ratio of soluble/insoluble expPABPN1 is significantly lower compared with that of the WT protein. PMID: 21854744
31. Transportin binding might delay methylation of PABPN1 until after nuclear import. PMID: 21808065
32. A GCG expansion (GCG)11 in polyadenylate-binding protein nuclear 1 gene caused oculopharyngeal muscular dystrophy in a Chinese family. PMID: 21647273
33. no correlation was found between muscle weakness, the frequency of repeats in the polyadenine binding protein nuclear , and the frequency and size of nuclear inclusions PMID: 21545772
34. The autosomal dominant form of this disease is caused by short expansions of a (GCG)(6) repeat to (GCG)(8-13) in the PABPN1 gene. PMID: 11689481
35. In COS-7 cells, predominantly nuclear protein hnRNP A1 and A/B co-localize with mPABPN1 in insoluble intranuclear aggregates. PMID: 12945950
36. All families carrying the mutation (GCG)(11)(GCA)(3)(GCG) shared a common ancestral haplotype and the age of the mutation was estimated in 37-53 generations by a composite likelihood method. PMID: 15694141
37. a 64 year old Chinese-Malaysian woman who presented with progressive dysphagia and bilateral ptosis for about 6 years. and showed repeat expansion in one allele to (GCG)9 while normal in the other (GCG)6. PMID: 15725589
38. Expanded PABPN1, presumably via the toxic effects of its polyalanine tract, leads to inclusion formation and neurodegeneration in both the transgenic mouse and the human. PMID: 15755680
39. Cytoplasmic targeting of mutant PABPN1 suppresses protein aggregation and toxicity in oculopharyngeal muscular dystrophy. PMID: 16101680
40. Recruitment of HSP70 and HSC70 into the cell nucleus reduced mutant PABPN1 aggregation in a HeLa cell culture model. PMID: 16239242
41. PABPN1 has a role in myogenesis PMID: 16378590
42. Overexpression of either the wild type or mutant PABPN1 slowed down cell proliferation. The slowing down of proliferation together with the occasional occurrence of apoptosis could contribute in vivo to the late onset of this disease. PMID: 16860991
43. Mutation of the PABPN1 in oculopharyngeal muscular dystrophy (OPMD) provokes premature senescence in dividing myoblasts, that may be due to intranuclear toxic aggregates. PMID: 17005403
44. the N-terminal domain of PABPN1 has a role in oculopharyngeal muscular dystrophy PMID: 17229142
45. This is the first report directly indicating that nuclear aggregation in OPMD may reflect an active process by which cells sequester and inactivate the soluble toxic form of expPABPN1. PMID: 17418585
46. An Italy case of oculopharyngeal muscular dystrophy in PABNPN1 mutation. PMID: 18175083
47. Wild-type PABPN1 over-expression can reduce mutant PABPN1 toxicity in both cell and mouse models of Oculopharyngeal muscular dystrophy. PMID: 18178579
48. We report a unique PABPN1 gene mutation in a large Bulgarian family with OPMD. PMID: 18274805
49. Expression of additional HSPs including HSP27, HSP40, and HSP105 were induced in mutant PABPN1 expressing cells following exposure to the chemicals mentioned above. PMID: 18343218
50. PABPN1 transgenic nematodes show muscle cell degeneration and abnormal motility. PMID: 18397876

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HGNC: 8565

OMIM: 164300

KEGG: hsa:8106

STRING: 9606.ENSP00000216727

UniGene: Hs.707712