LSM1

U6 snRNA-associated Sm-like protein LSm1 is a protein that in humans is encoded by the LSM1 gene.[5][6][7]

LSM1
Identifiers
Aliases	LSM1, CASM, YJL124C, LSM1 homolog, mRNA degradation associated
External IDs	OMIM: 607281 MGI: 1914457 HomoloGene: 40945 GeneCards: LSM1
Gene location (Human) Chr. Chromosome 8 (human)[1] Band 8p11.23 Start 38,163,335 bp[1] End 38,176,730 bp[1]
Gene location (Mouse) Chr. Chromosome 8 (mouse)[2] Band 8|8 A2 Start 25,785,288 bp[2] End 25,803,975 bp[2]
RNA expression pattern More reference expression data
Gene ontology Molecular function • GO:0001948 protein binding • RNA cap binding • pre-mRNA binding • mRNA binding • RNA binding Cellular component • cytosol • P-body • messenger ribonucleoprotein complex • axon • neuronal cell body • dendrite • cell nucleus • cytoplasm • mRNA cap binding complex • Lsm1-7-Pat1 complex Biological process • negative regulation of neuron differentiation • deadenylation-dependent decapping of nuclear-transcribed mRNA • RNA splicing, via transesterification reactions • mRNA processing • stem cell population maintenance • RNA splicing • exonucleolytic nuclear-transcribed mRNA catabolic process involved in deadenylation-dependent decay • histone mRNA catabolic process • nuclear-transcribed mRNA catabolic process • RNA metabolic process Sources:Amigo / QuickGO
Orthologs
Species	Human	Mouse
Entrez	27257	67207
Ensembl	ENSG00000175324	ENSMUSG00000037296
UniProt	O15116	Q8VC85
RefSeq (mRNA)	NM_014462	NM_026032
RefSeq (protein)	NP_055277	NP_080308
Location (UCSC)	Chr 8: 38.16 – 38.18 Mb	Chr 8: 25.79 – 25.8 Mb
PubMed search	[3]	[4]
Wikidata
View/Edit Human View/Edit Mouse

Function

Sm-like proteins were identified in a variety of organisms based on sequence homology with the Sm protein family (see SNRPD2). Sm-like proteins contain the Sm sequence motif, which consists of 2 regions separated by a linker of variable length that folds as a loop. The Sm-like proteins are thought to form a stable heteromer present in tri-snRNP particles, which are important for pre-mRNA splicing.[7]

References

1. GRCh38: Ensembl release 89: ENSG00000175324 - Ensembl, May 2017
2. GRCm38: Ensembl release 89: ENSMUSG00000037296 - Ensembl, May 2017
3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
5. Ingelfinger D, Arndt-Jovin DJ, Luhrmann R, Achsel T (Jan 2003). "The human LSm1-7 proteins colocalize with the mRNA-degrading enzymes Dcp1/2 and Xrnl in distinct cytoplasmic foci". RNA. 8 (12): 1489–501. doi:10.1017/S1355838202021726 (inactive 2021-01-14). PMC 1370355. PMID 12515382.CS1 maint: DOI inactive as of January 2021 (link)
6. Takahashi S, Suzuki S, Inaguma S, Cho YM, Ikeda Y, Hayashi N, Inoue T, Sugimura Y, Nishiyama N, Fujita T, Ushijima T, Shirai T (Apr 2002). "Down-regulation of Lsm1 is involved in human prostate cancer progression". Br J Cancer. 86 (6): 940–6. doi:10.1038/sj.bjc.6600163. PMC 2364150. PMID 11953827.
7. "Entrez Gene: LSM1 LSM1 homolog, U6 small nuclear RNA associated (S. cerevisiae)".

Further reading

• Shimizu Y, Sugiyama H, Fujii Y, et al. (1997). "Lineage- and differentiation stage-specific expression of LSM-1 (LPAP), a possible substrate for CD45, in human hematopoietic cells". Am. J. Hematol. 54 (1): 1–11. doi:10.1002/(SICI)1096-8652(199701)54:1<1::AID-AJH1>3.0.CO;2-1. PMID 8980254.
• Schweinfest CW, Graber MW, Chapman JM, et al. (1997). "CaSm: an Sm-like protein that contributes to the transformed state in cancer cells". Cancer Res. 57 (14): 2961–5. PMID 9230209.
• Salgado-Garrido J, Bragado-Nilsson E, Kandels-Lewis S, Séraphin B (1999). "Sm and Sm-like proteins assemble in two related complexes of deep evolutionary origin". EMBO J. 18 (12): 3451–62. doi:10.1093/emboj/18.12.3451. PMC 1171424. PMID 10369684.
• Achsel T, Brahms H, Kastner B, et al. (1999). "A doughnut-shaped heteromer of human Sm-like proteins binds to the 3'-end of U6 snRNA, thereby facilitating U4/U6 duplex formation in vitro". EMBO J. 18 (20): 5789–802. doi:10.1093/emboj/18.20.5789. PMC 1171645. PMID 10523320.
• Friesen WJ, Dreyfuss G (2000). "Specific sequences of the Sm and Sm-like (Lsm) proteins mediate their interaction with the spinal muscular atrophy disease gene product (SMN)". J. Biol. Chem. 275 (34): 26370–5. doi:10.1074/jbc.M003299200. PMID 10851237.
• Eystathioy T, Peebles CL, Hamel JC, et al. (2002). "Autoantibody to hLSm4 and the heptameric LSm complex in anti-Sm sera". Arthritis Rheum. 46 (3): 726–34. doi:10.1002/art.10220. PMID 11920408.
• 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.
• Lehner B, Semple JI, Brown SE, et al. (2004). "Analysis of a high-throughput yeast two-hybrid system and its use to predict the function of intracellular proteins encoded within the human MHC class III region". Genomics. 83 (1): 153–67. doi:10.1016/S0888-7543(03)00235-0. PMID 14667819.
• Lehner B, Sanderson CM (2004). "A Protein Interaction Framework for Human mRNA Degradation". Genome Res. 14 (7): 1315–23. doi:10.1101/gr.2122004. PMC 442147. PMID 15231747.
• 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. S2CID 4427026.
• Wichroski MJ, Robb GB, Rana TM (2006). "Human Retroviral Host Restriction Factors APOBEC3G and APOBEC3F Localize to mRNA Processing Bodies". PLOS Pathog. 2 (5): e41. doi:10.1371/journal.ppat.0020041. PMC 1458959. PMID 16699599.
• Chu CY, Rana TM (2006). "Translation Repression in Human Cells by MicroRNA-Induced Gene Silencing Requires RCK/p54". PLOS Biol. 4 (7): e210. doi:10.1371/journal.pbio.0040210. PMC 1475773. PMID 16756390.
• Streicher KL, Yang ZQ, Draghici S, Ethier SP (2007). "Transforming function of the LSM1 oncogene in human breast cancers with the 8p11−12 amplicon". Oncogene. 26 (14): 2104–14. doi:10.1038/sj.onc.1210002. PMC 2435249. PMID 17001308.