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lncRNA gene - sme2 (SPNCRNA.103) - meiosis specific Smp foci lncRNA Sme2 (meiRNA), long isoform OR meiosis specific Smp foci lncRNA Sme2, short isoform

Gene summary

Standard name
sme2
Systematic ID
SPNCRNA.103
Product
meiosis specific Smp foci lncRNA Sme2 (meiRNA), long isoform OR meiosis specific Smp foci lncRNA Sme2, short isoform
Organism
Schizosaccharomyces pombe (fission yeast)
Synonyms
SPNCRNA.1341, nam4, meiRNA-L, sme2-L, SPNCRNA.4675
Feature type
lncRNA gene
Genomic location
chromosome II: 339346..340907 reverse strand

Annotation

GO biological process

GO:0051728 - cell cycle switching, mitotic to meiotic cell cycle

References:

GO:0007129 - homologous chromosome pairing at meiosis

References:

GO:0120271 - negative regulation of nuclear mRNA surveillance of meiosis-specific transcripts

References:

GO cellular component

GO:0005737 - cytoplasm

References:

GO:0033620 - Mei2 nuclear dot complex

References:

GO:1990251 - nuclear exosome focus

References:

GO:0005634 - nucleus

References:

GO molecular function

GO:0140693 - molecular condensate scaffold activity

References:

GO:0005515 - protein binding

References:

GO:0140311 - protein sequestering activity

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Multi-locus phenotype

FYPO:0007497 - aggregated nuclear exosome foci

References:

Genotypes:

FYPO:0007212 - decreased chromatin silencing at heterochromatin island

References:

Genotypes:

FYPO:0000581 - decreased spore germination frequency

References:

Genotypes:

FYPO:0000584 - decreased sporulation frequency

References:

Genotypes:

FYPO:0002960 - increased level of DSR-containing meiotic gene mRNA during vegetative growth

References:

Genotypes:

FYPO:0002173 - increased level of meiotic gene mRNA during vegetative growth

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Genotypes:

FYPO:0007147 - normal Mei2 nuclear dot formation

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Genotypes:

FYPO:0002052 - normal sporulation frequency

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Genotypes:

Qualitative gene expression

PomGeneEx:0000011 - RNA level increased

References:

Quantitative gene expression

PBO:0011963 - RNA level

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Single locus phenotype

FYPO:0000474 - abolished meiosis

References:

Genotypes:

FYPO:0002708 - abolished prospore formation

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Genotypes:

FYPO:0002962 - abolished protein localization to Mei2 nuclear dot

References:

Genotypes:

FYPO:0007496 - abolished protein localization to nuclear exosome focus at sme2 locus

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Genotypes:

FYPO:0002133 - abolished protein-RNA interaction

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Genotypes:

FYPO:0000583 - abolished sporulation

References:

Genotypes:

FYPO:0007497 - aggregated nuclear exosome foci

References:

Genotypes:

FYPO:0009021 - decreased cell population growth on cysteine nitrogen source

References:

Genotypes:

FYPO:0000251 - decreased cell population growth on galactose carbon source

References:

Genotypes:

FYPO:0000684 - decreased cell population growth on glycerol carbon source

References:

Genotypes:

FYPO:0003060 - decreased meiotic recombination at cis-acting homologous chromosome pairing region

References:

Genotypes:

FYPO:0002134 - decreased protein-RNA interaction

References:

Genotypes:

FYPO:0002959 - decreased RNA level during meiosis

References:

Genotypes:

FYPO:0001152 - decreased RNA level during nitrogen starvation

References:

Genotypes:

FYPO:0000581 - decreased spore germination frequency

References:

Genotypes:

FYPO:0000584 - decreased sporulation frequency

References:

Genotypes:

FYPO:0003055 - delayed onset of homologous chromosome pairing at cis-acting homologous chromosome pairing region

References:

Genotypes:

FYPO:0009028 - increased cell population growth on proline nitrogen source

References:

Genotypes:

FYPO:0003049 - increased transcriptional readthrough

References:

Genotypes:

FYPO:0003056 - Mei2 nuclear dot absent from cell

References:

Genotypes:

FYPO:0003747 - normal level of DSR-containing meiotic gene mRNA during vegetative growth

References:

Genotypes:

FYPO:0000760 - normal mating

References:

Genotypes:

FYPO:0002043 - normal premeiotic DNA replication

References:

Genotypes:

FYPO:0001509 - normal protein localization to chromatin during vegetative growth

References:

Genotypes:

FYPO:0007495 - normal protein localization to Mei2 nuclear dot

References:

Genotypes:

FYPO:0002357 - normal protein-RNA interaction

References:

Genotypes:

FYPO:0003121 - normal rate of homologous chromosome pairing at cis-acting homologous chromosome pairing region

References:

Genotypes:

FYPO:0001317 - normal RNA level during vegetative growth

References:

Genotypes:

FYPO:0003059 - normal RNA localization to chromatin

References:

Genotypes:

FYPO:0001029 - resistance to canavanine

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Genotypes:

FYPO:0002578 - resistance to hydroxyurea

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Genotypes:

FYPO:0007808 - resistance to valproic acid

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Genotypes:

FYPO:0001996 - RNA absent from cell during nitrogen starvation

References:

Genotypes:

FYPO:0003161 - RNA absent from cell during vegetative growth

References:

Genotypes:

FYPO:0001097 - sensitive to amitrole

References:

Genotypes:

FYPO:0000799 - sensitive to diamide

References:

Genotypes:

FYPO:0000088 - sensitive to hydroxyurea

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Genotypes:

FYPO:0002546 - sensitive to trichostatin A

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Genotypes:

FYPO:0000115 - sensitive to valproic acid

References:

Genotypes:

FYPO:0002060 - viable vegetative cell population

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Genotypes:

Warnings

PBO:0000070 - gene structure updated

References:

References / Literature

PMID:22582262 - Meiosis-specific noncoding RNA mediates robust pairing of homologous chromosomes in meiosis.
Ding DQ et al. Science 2012 May 11;336(6082):732-6
PMID:24210919 - Mtr4-like protein coordinates nuclear RNA processing for heterochromatin assembly and for telomere maintenance.
Lee NN et al. Cell 2013 Nov 21;155(5):1061-74
PMID:31533287 - meiRNA, A Polyvalent Player in Fission Yeast Meiosis.
Yamashita A Noncoding RNA 2019 Sep 17;5(3)
PMID:24920274 - Meiotic long non-coding meiRNA accumulates as a dot at its genetic locus facilitated by Mmi1 and plays as a decoy to lure Mmi1.
Shichino Y et al. Open Biol 2014 Jun;4(6):140022
PMID:9778252 - RNA-assisted nuclear transport of the meiotic regulator Mei2p in fission yeast.
Yamashita A et al. Cell 1998 Oct 02;95(1):115-23
PMID:26670050 - Regulation of mRNA Levels by Decay-Promoting Introns that Recruit the Exosome Specificity Factor Mmi1.
Kilchert C et al. Cell Rep 2015 Dec 22;13(11):2504-2515
PMID:21317872 - Red1 promotes the elimination of meiosis-specific mRNAs in vegetatively growing fission yeast.
Sugiyama T et al. EMBO J 2011 Mar 16;30(6):1027-39
PMID:33536434 - A scaffold lncRNA shapes the mitosis to meiosis switch.
Andric V et al. Nat Commun 2021 Feb 03;12(1):770
PMID:20512112 - Importance of polyadenylation in the selective elimination of meiotic mRNAs in growing S. pombe cells.
Yamanaka S et al. EMBO J 2010 Jul 07;29(13):2173-81
PMID:20622014 - Negative regulation of meiotic gene expression by the nuclear poly(a)-binding protein in fission yeast.
St-André O et al. J Biol Chem 2010 Sep 03;285(36):27859-68
PMID:11818066 - 14-3-3 protein interferes with the binding of RNA to the phosphorylated form of fission yeast meiotic regulator Mei2p.
Sato M et al. Curr Biol 2002 Jan 22;12(2):141-5
PMID:26631744 - Conserved factor Dhp1/Rat1/Xrn2 triggers premature transcription termination and nucleates heterochromatin to promote gene silencing.
Chalamcharla VR et al. Proc Natl Acad Sci U S A 2015 Dec 22;112(51):15548-55
PMID:23658229 - Red5 and three nuclear pore components are essential for efficient suppression of specific mRNAs during vegetative growth of fission yeast.
Sugiyama T et al. Nucleic Acids Res 2013 Jul;41(13):6674-86
PMID:16823445 - Selective elimination of messenger RNA prevents an incidence of untimely meiosis.
Harigaya Y et al. Nature 2006 Jul 06;442(7098):45-50
PMID:31974447 - Formation of S. pombe Erh1 homodimer mediates gametogenic gene silencing and meiosis progression.
Hazra D et al. Sci Rep 2020 Jan 23;10(1):1034
PMID:35512546 - Structural insights reveal the specific recognition of meiRNA by the Mei2 protein.
Shen S et al. J Mol Cell Biol 2022 Sep 19;14(5)
PMID:41298081 - Gamete fusion triggers cytosolic functions and P-body recruitment of the RNA-binding protein Mei2 to drive fission yeast zygotic development.
Araoyinbo A et al. Genes Dev 2025 Nov 26;
PMID:9062192 - Phosphorylation of RNA-binding protein controls cell cycle switch from mitotic to meiotic in fission yeast.
Watanabe Y et al. Nature 1997 Mar 13;386(6621):187-90
PMID:40185772 - A bifunctional snoRNA with separable activities in guiding rRNA 2'-O-methylation and scaffolding gametogenesis effectors.
Leroy E et al. Nat Commun 2025 Apr 05;16(1):3250
PMID:17032641 - Global roles of Ste11p, cell type, and pheromone in the control of gene expression during early sexual differentiation in fission yeast.
Mata J et al. Proc Natl Acad Sci U S A 2006 Oct 17;103(42):15517-22
PMID:27984744 - Survival in Quiescence Requires the Euchromatic Deployment of Clr4/SUV39H by Argonaute-Associated Small RNAs.
Joh RI et al. Mol Cell 2016 Dec 15;64(6):1088-1101
PMID:31811152 - Chromosome-associated RNA-protein complexes promote pairing of homologous chromosomes during meiosis in Schizosaccharomyces pombe.
Ding DQ et al. Nat Commun 2019 Dec 06;10(1):5598
PMID:24493644 - lncRNA recruits RNAi and the exosome to dynamically regulate pho1 expression in response to phosphate levels in fission yeast.
Shah S et al. Genes Dev 2014 Feb 01;28(3):231-44
PMID:7520368 - S. pombe mei2+ encodes an RNA-binding protein essential for premeiotic DNA synthesis and meiosis I, which cooperates with a novel RNA species meiRNA.
Watanabe Y et al. Cell 1994 Aug 12;78(3):487-98
PMID:22522705 - Mmi1 RNA surveillance machinery directs RNAi complex RITS to specific meiotic genes in fission yeast.
Hiriart E et al. EMBO J 2012 May 16;31(10):2296-308
PMID:25375137 - Systematic analysis of the role of RNA-binding proteins in the regulation of RNA stability.
Hasan A et al. PLoS Genet 2014 Nov;10(11):e1004684
PMID:23980030 - A novel factor Iss10 regulates Mmi1-mediated selective elimination of meiotic transcripts.
Yamashita A et al. Nucleic Acids Res 2013 Nov;41(21):9680-7
PMID:9167972 - Microtubule-associated coiled-coil protein Ssm4 is involved in the meiotic development in fission yeast.
Yamashita A et al. Genes Cells 1997 Feb;2(2):155-66
PMID:23101633 - Quantitative analysis of fission yeast transcriptomes and proteomes in proliferating and quiescent cells.
Marguerat S et al. Cell 2012 Oct 26;151(3):671-83
PMID:34984977 - Functional profiling of long intergenic non-coding RNAs in fission yeast.
Rodriguez-Lopez M et al. Elife 2022 Jan 05;11
PMID:39520300 - Proteins and noncoding RNAs that promote homologous chromosome recognition and pairing in fission yeast meiosis undergo condensate formation in vitro.
Ding DQ et al. FASEB J 2024 Nov 15;38(21):e70163
PMID:33574613 - TOR targets an RNA processing network to regulate facultative heterochromatin, developmental gene expression and cell proliferation.
Wei Y et al. Nat Cell Biol 2021 Mar;23(3):243-256
PMID:28841135 - Ubiquitination-dependent control of sexual differentiation in fission yeast.
Simonetti F et al. Elife 2017 Aug 25;6
PMID:39747188 - PhpC NF-Y transcription factor infiltrates heterochromatin to generate cryptic intron-containing transcripts crucial for small RNA production.
Srivastav MK et al. Nat Commun 2025 Jan 02;16(1):268