Gene Symbol: LSM1
Description: Lsm1p
Alias: SPB8, Lsm1p
Species: Saccharomyces cerevisiae S288c

Top Publications

  1. Tharun S, Muhlrad D, Chowdhury A, Parker R. Mutations in the Saccharomyces cerevisiae LSM1 gene that affect mRNA decapping and 3' end protection. Genetics. 2005;170:33-46 pubmed
    The decapping of eukaryotic mRNAs is a key step in their degradation. The heteroheptameric Lsm1p-7p complex is a general activator of decapping and also functions in protecting the 3' ends of deadenylated mRNAs from a 3'-trimming ..
  2. Coller J, Tucker M, Sheth U, Valencia Sanchez M, Parker R. The DEAD box helicase, Dhh1p, functions in mRNA decapping and interacts with both the decapping and deadenylase complexes. RNA. 2001;7:1717-27 pubmed
    ..interacts with several proteins involved in mRNA decapping including the decapping enzyme Dcp1p, as well as Lsm1p and Pat1p/Mrt1p, which function to enhance the decapping rate...
  3. Mayes A, Verdone L, Legrain P, Beggs J. Characterization of Sm-like proteins in yeast and their association with U6 snRNA. EMBO J. 1999;18:4321-31 pubmed
    ..We discuss the possible existence and functions of alternative Lsm complexes, including the likelihood that they are involved in processes other than pre-mRNA splicing. ..
  4. Kufel J, Allmang C, Petfalski E, Beggs J, Tollervey D. Lsm Proteins are required for normal processing and stability of ribosomal RNAs. J Biol Chem. 2003;278:2147-56 pubmed
    ..Many, but not all, pre-rRNA species could be coprecipitated with tagged Lsm3p, but not with tagged Lsm1p or non-tagged control strains, suggesting their direct interaction with an Lsm2-8p complex...
  5. Sheth U, Parker R. Decapping and decay of messenger RNA occur in cytoplasmic processing bodies. Science. 2003;300:805-8 pubmed
    ..These results define the flux of mRNAs between polysomes and P bodies as a critical aspect of cytoplasmic mRNA metabolism and a possible site for regulation of mRNA degradation...
  6. Pilkington G, Parker R. Pat1 contains distinct functional domains that promote P-body assembly and activation of decapping. Mol Cell Biol. 2008;28:1298-312 pubmed
    ..These results indicate that Pat1 is an RNA binding protein and a multidomain protein that functions at multiple stages in the process of translation repression and mRNA decapping...
  7. Chowdhury A, Mukhopadhyay J, Tharun S. The decapping activator Lsm1p-7p-Pat1p complex has the intrinsic ability to distinguish between oligoadenylated and polyadenylated RNAs. RNA. 2007;13:998-1016 pubmed
    ..The highly conserved heptameric Lsm1p-7p complex (made up of the seven Sm-like proteins, Lsm1p-Lsm7p) and its interacting partner Pat1p activate ..
  8. Spiller M, Reijns M, Beggs J. Requirements for nuclear localization of the Lsm2-8p complex and competition between nuclear and cytoplasmic Lsm complexes. J Cell Sci. 2007;120:4310-20 pubmed
    ..Furthermore, overexpression and depletion experiments imply that Lsm1p and Lsm8p act competitively with respect to the localization of the two complexes, suggesting a potential ..
  9. He W, Parker R. The yeast cytoplasmic LsmI/Pat1p complex protects mRNA 3' termini from partial degradation. Genetics. 2001;158:1445-55 pubmed
    ..First, mutations in the LSM1 to LSM7, as well as PAT1, genes led to the accumulation of MFA2pG and PGK1pG transcripts that had been shortened by ..

More Information


  1. Reijns M, Alexander R, Spiller M, Beggs J. A role for Q/N-rich aggregation-prone regions in P-body localization. J Cell Sci. 2008;121:2463-72 pubmed publisher
    ..The yeast Lsm1-7p complex (comprising Lsm1p to Lsm7p) is recruited to P-bodies under certain stress conditions...
  2. Tharun S, Parker R. Targeting an mRNA for decapping: displacement of translation factors and association of the Lsm1p-7p complex on deadenylated yeast mRNAs. Mol Cell. 2001;8:1075-83 pubmed
    ..and includes loss of Pab1p, eIF4E, and eIF4G from the mRNA and association of the decapping activator complex, Lsm1p-7p, which enhances the coimmunoprecipitation of a decapping enzyme complex (Dcp1p and Dcp2p) with the mRNA...
  3. Fernandez C, Pannone B, Chen X, Fuchs G, Wolin S. An Lsm2-Lsm7 complex in Saccharomyces cerevisiae associates with the small nucleolar RNA snR5. Mol Biol Cell. 2004;15:2842-52 pubmed
    ..In yeast, the Lsm2-Lsm8 complex binds and stabilizes the spliceosomal U6 snRNA, whereas the Lsm1-Lsm7 complex functions in mRNA decay...
  4. Herrero A, Moreno S. Lsm1 promotes genomic stability by controlling histone mRNA decay. EMBO J. 2011;30:2008-18 pubmed publisher
    b>Lsm1 forms part of a cytoplasmic protein complex, Lsm1-7-Pat1, involved in the degradation of mRNAs. Here, we show that Lsm1 has an important role in promoting genomic stability in Saccharomyces cerevisiae...
  5. Boeck R, Lapeyre B, Brown C, Sachs A. Capped mRNA degradation intermediates accumulate in the yeast spb8-2 mutant. Mol Cell Biol. 1998;18:5062-72 pubmed
    ..Here we report that a mutation in the SPB8 (YJL124c) gene, initially identified as a suppressor mutation of a poly(A)-binding protein (PAB1) gene deletion, ..
  6. Tharun S, He W, Mayes A, Lennertz P, Beggs J, Parker R. Yeast Sm-like proteins function in mRNA decapping and decay. Nature. 2000;404:515-8 pubmed
    ..Here we show that mutations in seven yeast Lsm proteins (Lsm1-Lsm7) also lead to inhibition of mRNA decapping...
  7. Bouveret E, Rigaut G, Shevchenko A, Wilm M, Seraphin B. A Sm-like protein complex that participates in mRNA degradation. EMBO J. 2000;19:1661-71 pubmed
    ..Another yeast Sm-like protein, Lsm1p, does not interact with U6 snRNA...
  8. Spicakova T, McCann K, Brown J. A role for Lsmlp in response to ultraviolet-radiation damage in Saccharomyces cerevisiae. Radiat Res. 2008;170:411-21 pubmed
    A genome-wide screen in Saccharomyces cerevisiae identified LSM1 as a new gene affecting sensitivity to ultraviolet (UV) radiation...
  9. Haimovich G, Medina D, Causse S, Garber M, Millán Zambrano G, Barkai O, et al. Gene expression is circular: factors for mRNA degradation also foster mRNA synthesis. Cell. 2013;153:1000-11 pubmed publisher
    ..The gene expression process is therefore circular, whereby the hitherto first and last stages are interconnected. ..
  10. Chang W, Zaarour R, Reck Peterson S, Rinn J, Singer R, Snyder M, et al. Myo2p, a class V myosin in budding yeast, associates with a large ribonucleic acid-protein complex that contains mRNAs and subunits of the RNA-processing body. RNA. 2008;14:491-502 pubmed publisher
    ..P-body disassembly is delayed in the motor mutant, myo2-66, indicating that Myo2p may facilitate the release of mRNAs from the P-body. ..
  11. Hurto R, Hopper A. P-body components, Dhh1 and Pat1, are involved in tRNA nuclear-cytoplasmic dynamics. RNA. 2011;17:912-24 pubmed publisher
    ..Also, loss of the mRNA decapping activator, Lsm1, causes tRNA nuclear accumulation...
  12. Chowdhury A, Tharun S. lsm1 mutations impairing the ability of the Lsm1p-7p-Pat1p complex to preferentially bind to oligoadenylated RNA affect mRNA decay in vivo. RNA. 2008;14:2149-58 pubmed publisher
    ..The conserved Lsm1p-7p-Pat1p complex is required for normal rates of decapping in vivo, and the purified complex exhibits strong ..
  13. Tharun S. Purification and analysis of the decapping activator Lsm1p-7p-Pat1p complex from yeast. Methods Enzymol. 2008;448:41-55 pubmed publisher
    ..The Lsm1p-7p-Pat1p complex is a key activator of decapping in the 5' to 3'-mRNA decay pathway that is highly conserved in ..
  14. Shively C, Kweon H, Norman K, Mellacheruvu D, Xu T, Sheidy D, et al. Large-Scale Analysis of Kinase Signaling in Yeast Pseudohyphal Development Identifies Regulation of Ribonucleoprotein Granules. PLoS Genet. 2015;11:e1005564 pubmed publisher
    ..Kss1p pathway activity is reduced in lsm1Δ/Δ and pat1Δ/Δ strains, and these genes encoding P-body proteins are epistatic to STE7...
  15. Bonnerot C, Boeck R, Lapeyre B. The two proteins Pat1p (Mrt1p) and Spb8p interact in vivo, are required for mRNA decay, and are functionally linked to Pab1p. Mol Cell Biol. 2000;20:5939-46 pubmed
    ..a mutation previously reported to affect decapping and to bypass suppress pab1Delta, as is also the case for dcp1, spb8, and mrt3. Coimmunoprecipitation experiments show that Pat1p is associated with Spb8p...
  16. Chowdhury A, Tharun S. Activation of decapping involves binding of the mRNA and facilitation of the post-binding steps by the Lsm1-7-Pat1 complex. RNA. 2009;15:1837-48 pubmed publisher
    Decapping is a critical step in the conserved 5'-to-3' mRNA decay pathway of eukaryotes. The hetero-octameric Lsm1-7-Pat1 complex is required for normal rates of decapping in this pathway...
  17. Gimenez Barcons M, Alves Rodrigues I, Jungfleisch J, Van Wynsberghe P, Ahlquist P, Diez J. The cellular decapping activators LSm1, Pat1, and Dhh1 control the ratio of subgenomic to genomic Flock House virus RNAs. J Virol. 2013;87:6192-200 pubmed publisher
    ..positive-strand RNA viruses, such as hepatitis C virus and brome mosaic virus, depends on host decapping activators LSm1-7, Pat1, and Dhh1 (J. Diez et al., Proc. Natl. Acad. Sci. U. S. A. 97:3913-3918, 2000; A. Mas et al., J. Virol...
  18. Chowdhury A, Raju K, Kalurupalle S, Tharun S. Both Sm-domain and C-terminal extension of Lsm1 are important for the RNA-binding activity of the Lsm1-7-Pat1 complex. RNA. 2012;18:936-44 pubmed publisher
    ..The highly conserved eukaryotic Lsm1 through Lsm7 proteins are part of the cytoplasmic Lsm1-7-Pat1 complex, which is an activator of decapping in the ..
  19. Li L, Miles S, Melville Z, Prasad A, Bradley G, Breeden L. Key events during the transition from rapid growth to quiescence in budding yeast require posttranscriptional regulators. Mol Biol Cell. 2013;24:3697-709 pubmed publisher
    ..These proteins deliver mRNAs to P-bodies, and at least one P-body component, Lsm1, also plays a unique role in Q-cell longevity...
  20. Taoka M, Yamauchi Y, Nobe Y, Masaki S, Nakayama H, Ishikawa H, et al. An analytical platform for mass spectrometry-based identification and chemical analysis of RNA in ribonucleoprotein complexes. Nucleic Acids Res. 2009;37:e140 pubmed publisher
  21. Wu D, Muhlrad D, Bowler M, Jiang S, Liu Z, Parker R, et al. Lsm2 and Lsm3 bridge the interaction of the Lsm1-7 complex with Pat1 for decapping activation. Cell Res. 2014;24:233-46 pubmed publisher
    The evolutionarily conserved Lsm1-7-Pat1 complex is the most critical activator of mRNA decapping in eukaryotic cells and plays many roles in normal decay, AU-rich element-mediated decay, and miRNA silencing, yet how Pat1 interacts with ..
  22. Luhtala N, Parker R. LSM1 over-expression in Saccharomyces cerevisiae depletes U6 snRNA levels. Nucleic Acids Res. 2009;37:5529-36 pubmed publisher
    b>Lsm1 is a component of the Lsm1-7 complex involved in cytoplasmic mRNA degradation...
  23. Sharif H, Conti E. Architecture of the Lsm1-7-Pat1 complex: a conserved assembly in eukaryotic mRNA turnover. Cell Rep. 2013;5:283-91 pubmed publisher
    The decay of mRNAs is a key step in eukaryotic gene expression. The cytoplasmic Lsm1-7-Pat1 complex is a conserved component of the 5'-to-3' mRNA decay pathway, linking deadenylation to decapping...
  24. Dutko J, Kenny A, Gamache E, Curcio M. 5' to 3' mRNA decay factors colocalize with Ty1 gag and human APOBEC3G and promote Ty1 retrotransposition. J Virol. 2010;84:5052-66 pubmed publisher
    ..Together, the results suggest that VLPs assemble in P bodies and that 5' to 3' mRNA decay is essential for the packaging of Ty1 RNA in VLPs. ..
  25. Loll Krippleber R, Brown G. P-body proteins regulate transcriptional rewiring to promote DNA replication stress resistance. Nat Commun. 2017;8:558 pubmed publisher
    ..The key P-body protein Lsm1 controls the abundance of HHT1, ACF4, ARL3, TMA16, RRS1 and YOX1 mRNAs to prevent their toxic accumulation during ..
  26. Chowdhury A, Kalurupalle S, Tharun S. Mutagenic Analysis of the C-Terminal Extension of Lsm1. PLoS ONE. 2016;11:e0158876 pubmed publisher
    ..They are characterized by the presence of the Sm-domain. The Lsm1 through Lsm7 proteins are highly conserved in eukaryotes and they form a hetero-octameric complex together with the ..
  27. Hausmann S, Zheng S, Costanzo M, Brost R, Garcin D, Boone C, et al. Genetic and biochemical analysis of yeast and human cap trimethylguanosine synthase: functional overlap of 2,2,7-trimethylguanosine caps, small nuclear ribonucleoprotein components, pre-mRNA splicing factors, and RNA decay pathways. J Biol Chem. 2008;283:31706-18 pubmed publisher
    ..also highlighted synthetic interactions of Tgs1 with proteins implicated in RNA end processing and decay (Pat1, Lsm1, and Trf4) and regulation of polymerase II transcription (Rpn4, Spt3, Srb2, Soh1, Swr1, and Htz1)...
  28. Trautwein M, Dengjel J, Schirle M, Spang A. Arf1p provides an unexpected link between COPI vesicles and mRNA in Saccharomyces cerevisiae. Mol Biol Cell. 2004;15:5021-37 pubmed
    ..Hereby acts the SHE machinery in long-range mRNA transport, whereas COPI vesicles could act as short-range and localization vehicles. The endoplasmic reticulum (ER)-Golgi shuttle might be involved in concentrating mRNA at the ER. ..
  29. Reijns M, Auchynnikava T, Beggs J. Analysis of Lsm1p and Lsm8p domains in the cellular localization of Lsm complexes in budding yeast. FEBS J. 2009;276:3602-17 pubmed publisher
    ..Although no single domain is either essential or sufficient for cellular localization, the Lsm1p N-terminus may act as part of a nuclear exclusion signal for Lsm1-7p, and the shorter Lsm8p N-terminus contributes ..
  30. Chowdhury A, Kalurupalle S, Tharun S. Pat1 contributes to the RNA binding activity of the Lsm1-7-Pat1 complex. RNA. 2014;20:1465-75 pubmed publisher
    ..In this pathway, decapping is a rate-limiting step that requires the hetero-octameric Lsm1-7-Pat1 complex to occur at normal rates in vivo...
  31. Luo X, Talarek N, De Virgilio C. Initiation of the yeast G0 program requires Igo1 and Igo2, which antagonize activation of decapping of specific nutrient-regulated mRNAs. RNA Biol. 2011;8:14-7 pubmed
    ..Accordingly, Igo1/2 likely play a key role in preventing the decapping and subsequent 5'-3' degradation of a set of nutrient-regulated mRNAs that are critical for cell differentiation and chronological life span. ..
  32. Beckham C, Hilliker A, Cziko A, Noueiry A, Ramaswami M, Parker R. The DEAD-box RNA helicase Ded1p affects and accumulates in Saccharomyces cerevisiae P-bodies. Mol Biol Cell. 2008;19:984-93 pubmed
    ..size and number of P-bodies and inhibition of growth in a manner partially suppressed by loss of Pat1p, Dhh1p, or Lsm1p. Mutations that inactivate the ATPase activity of Ded1p increase the overexpression growth inhibition of Ded1p and ..
  33. 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
    ..We provide evidence for genetic interactions between SUS1 and genes coding for components of P-bodies such as PAT1, LSM1, LSM6 and DHH1...
  34. Sobti M, Cubeddu L, Haynes P, Mabbutt B. Engineered rings of mixed yeast Lsm proteins show differential interactions with translation factors and U-rich RNA. Biochemistry. 2010;49:2335-45 pubmed publisher
    ..Polyprotein rings containing truncated forms of Lsm1 and Lsm4 were found to associate with translation, initiation, and elongation protein factors in an RNA-dependent ..