Gene Symbol: PBP1
Description: Pbp1p
Alias: MRS16, Pbp1p
Species: Saccharomyces cerevisiae S288c

Top Publications

  1. Mangus D, Amrani N, Jacobson A. Pbp1p, a factor interacting with Saccharomyces cerevisiae poly(A)-binding protein, regulates polyadenylation. Mol Cell Biol. 1998;18:7383-96 pubmed
    ..We determined that a fraction of Pbp1p cosediments with polysomes in sucrose gradients and that its distribution is very similar to that of Pab1p...
  2. Mangus D, Smith M, McSweeney J, Jacobson A. Identification of factors regulating poly(A) tail synthesis and maturation. Mol Cell Biol. 2004;24:4196-206 pubmed
    ..Previously, we demonstrated that the yeast protein Pbp1p associates with poly(A)-binding protein (Pab1p) and controls the extent of mRNA polyadenylation...
  3. Tadauchi T, Inada T, Matsumoto K, Irie K. Posttranscriptional regulation of HO expression by the Mkt1-Pbp1 complex. Mol Cell Biol. 2004;24:3670-81 pubmed
    ..We screened for proteins that associate with Mkt1 and isolated Pbp1, a protein that is known to associate with Pab1, a poly(A)-binding protein...
  4. Mangus D, Evans M, Agrin N, Smith M, Gongidi P, Jacobson A. Positive and negative regulation of poly(A) nuclease. Mol Cell Biol. 2004;24:5521-33 pubmed
    ..Pab1p also regulates poly(A) tail trimming by interacting with Pbp1p, a factor that appears to negatively regulate PAN...
  5. Buchan J, Muhlrad D, Parker R. P bodies promote stress granule assembly in Saccharomyces cerevisiae. J Cell Biol. 2008;183:441-55 pubmed publisher
    ..These observations argue that P bodies are important sites for decisions of mRNA fate and that stress granules, at least in yeast, primarily represent pools of mRNAs stalled in the process of reentry into translation from P bodies. ..
  6. Woolstencroft R, Beilharz T, Cook M, Preiss T, Durocher D, Tyers M. Ccr4 contributes to tolerance of replication stress through control of CRT1 mRNA poly(A) tail length. J Cell Sci. 2006;119:5178-92 pubmed
    ..These results implicate the coordinated regulation of Crt1 via Ccr4 and Dun1 as a crucial nodal point in the response to DNA replication stress. ..
  7. Seidel G, Meierhofer D, Åžen N, Guenther A, Krobitsch S, Auburger G. Quantitative Global Proteomics of Yeast PBP1 Deletion Mutants and Their Stress Responses Identifies Glucose Metabolism, Mitochondrial, and Stress Granule Changes. J Proteome Res. 2017;16:504-515 pubmed publisher
    The yeast protein PBP1 is implicated in very diverse pathways. Intriguingly, its deletion mitigates the toxicity of human neurodegeneration factors...
  8. Swisher K, Parker R. Localization to, and effects of Pbp1, Pbp4, Lsm12, Dhh1, and Pab1 on stress granules in Saccharomyces cerevisiae. PLoS ONE. 2010;5:e10006 pubmed publisher
    ..The yeast Pbp1 protein and its mammalian ortholog, Ataxin-2, localize to stress granules and promote their formation...
  9. Chritton J, Wickens M. A role for the poly(A)-binding protein Pab1p in PUF protein-mediated repression. J Biol Chem. 2011;286:33268-78 pubmed publisher
    ..Finally, we demonstrate two separable mechanisms of translational repression employed by Puf5p: a Pab1p-dependent mechanism and a Pab1p-independent mechanism. ..

More Information


  1. Takahara T, Maeda T. Transient sequestration of TORC1 into stress granules during heat stress. Mol Cell. 2012;47:242-52 pubmed publisher
    ..Ectopic formation of SGs achieved by Pbp1 overexpression in unstressed cells sequesters TORC1 in this compartment, thereby blunting TORC1 signaling...
  2. Armakola M, Higgins M, Figley M, Barmada S, Scarborough E, Diaz Z, et al. Inhibition of RNA lariat debranching enzyme suppresses TDP-43 toxicity in ALS disease models. Nat Genet. 2012;44:1302-9 pubmed publisher
    ..Our findings provide insight into TDP-43-mediated cytotoxicity and suggest that decreasing Dbr1 activity could be a potential therapeutic approach for ALS. ..
  3. Gomar Alba M, del Olmo M. Hot1 factor recruits co-activator Sub1 and elongation complex Spt4/5 to osmostress genes. Biochem J. 2016;473:3065-79 pubmed publisher
    ..Instead, other data presented herein indicate a key function of the Hot1 transcription factor in the recruitment of these proteins to the promoter or the 5'-coding region of the genes under its control. ..
  4. Blair L, Liu Z, Labitigan R, Wu L, Zheng D, Xia Z, et al. KDM5 lysine demethylases are involved in maintenance of 3'UTR length. Sci Adv. 2016;2:e1501662 pubmed publisher
    ..In contrast, both KDM5A and KDM5B are involved in the lengthening of DICER1. Our findings suggest both a novel role for this family of demethylases and a novel targetable mechanism for 3'UTR processing. ..
  5. Abraham K, Chan J, Salvi J, Ho B, Hall A, Vidya E, et al. Intersection of calorie restriction and magnesium in the suppression of genome-destabilizing RNA-DNA hybrids. Nucleic Acids Res. 2016;44:8870-8884 pubmed
    ..In an R-loop accumulation model of Pbp1-deficient Saccharomyces cerevisiae, magnesium ions guided by cell membrane Mg2+ transporters Alr1/2 act ..
  6. Demille D, Badal B, Evans J, Mathis A, Anderson J, Grose J. PAS kinase is activated by direct SNF1-dependent phosphorylation and mediates inhibition of TORC1 through the phosphorylation and activation of Pbp1. Mol Biol Cell. 2015;26:569-82 pubmed publisher
    ..and activation of Psk1, which phosphorylates and activates poly(A)- binding protein binding protein 1 (Pbp1), which then inhibits TORC1 through sequestration at stress granules...
  7. Salvi J, Chan J, Szafranski K, Liu T, Wu J, Olsen J, et al. Roles for Pbp1 and caloric restriction in genome and lifespan maintenance via suppression of RNA-DNA hybrids. Dev Cell. 2014;30:177-91 pubmed publisher
    ..The yeast Ataxin-2 protein Pbp1 binds noncoding RNA, suppresses RNA-DNA hybrids, and prevents aberrant rDNA recombination...
  8. Kimura Y, Irie K, Irie K. Pbp1 is involved in Ccr4- and Khd1-mediated regulation of cell growth through association with ribosomal proteins Rpl12a and Rpl12b. Eukaryot Cell. 2013;12:864-74 pubmed publisher
    The Saccharomyces cerevisiae Pbp1 [poly(A)-binding protein (Pab1)-binding protein] is believed to be involved in RNA metabolism and regulation of translation, since Pbp1 regulates a length of poly(A) tail and is involved in stress granule ..
  9. Cuenca Bono B, García Molinero V, Pascual García P, García Oliver E, Llopis A, Rodriguez Navarro S. A novel link between Sus1 and the cytoplasmic mRNA decay machinery suggests a broad role in mRNA metabolism. BMC Cell Biol. 2010;11:19 pubmed publisher
    ..These interactions suggest a role for Sus1 in gene expression during cytoplasmic mRNA metabolism in addition to its nuclear function. ..
  10. Dunn C, Jensen R. Suppression of a defect in mitochondrial protein import identifies cytosolic proteins required for viability of yeast cells lacking mitochondrial DNA. Genetics. 2003;165:35-45 pubmed
    ..Our results suggest that increased amounts of Cct6p, Ssb1p, Icy1p, Tip41p, and Pbp1p help overcome the problems resulting from a defect in protein import.