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Strongylocentrotus purpuratus (purple sea urchin) spu-miR-137 URS000001B36D_7668

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spu-mir-137: spu-mir-137 is a microRNA that is predicted to influence the expression of AjC3, a target gene in the sea cucumber, A. japonicus [PMC4669494]. In a study comparing A12 vs. A00, no miRNA was down-regulated, but spu-miR-133 and spu-mir-137 were found to be overexpressed [PMC4669494]. The expression of AjC3 showed a tendency to decrease at the fourth time point (12 h) [PMC4669494]. The mature and hairpin sequences of spu-mir-137 in A. japonicus were found to be the same as those in S. purpuratusis [PMC4669494]. To determine the evolutionary relationship within the miR-137 family, alignment of full-length sequences of spu-mir-137 hairpins with miR-137 from other species is necessary [PMC4669494]. In comparison to vertebrate members of the miR-137 family, spu-mir-137 showed an offset at the first nucleotide [PMC4669494]. At the second time point (6 h), two down-regulated miRNAs (spu-miR-133 and spu-mir-137) were observed in A06 vs. A12, but AjC3 began to increase in expression level [PMC4669494]. Through bioinformatics analysis, five target genes were predicted for various miRNAs including spu-miR-133 and spu-mir-137: novel 45, spu-miR2004 and 2006 as well as A. japonicus complement C3 or C3–2 genes [PMC4669494].

Genome locations

Gene Ontology annotations


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This sequence is found in 23 other species

  1. Acyrthosiphon pisum (pea aphid) api-miR-137
  2. Aedes aegypti (yellow fever mosquito) aae-miR-137
  3. Anopheles gambiae aga-miR-137
  4. Bactrocera dorsalis (oriental fruit fly) bdo-miR-137
  5. Blattella germanica (German cockroach) Bge-Mir-137-P14-v2_3p (mature (guide))
  6. Capitella teleta cte-miR-137
  7. Culex quinquefasciatus cqu-miR-137
  8. Drosophila ananassae Dan-Mir-137_3p (mature (guide))
  9. Drosophila melanogaster dme-miR-137-3p
  10. Drosophila mojavensis Dmo-Mir-137_3p (mature (guide))
  11. Drosophila pseudoobscura dps-miR-137-3p
  12. Drosophila pseudoobscura pseudoobscura (Fruit fly) miRNA FBtr0330769_df_nrg
  13. Drosophila simulans dsi-miR-137-3p
  14. Drosophila virilis dvi-miR-137-3p
  15. Drosophila yakuba Dya-Mir-137_3p (mature (guide))
  16. Eisenia fetida (common brandling worm) Efe-Mir-137-P5_3p (mature (guide))
  17. Lingula anatina Lan-Mir-137_3p (mature (guide))
  18. Lytechinus variegatus (green sea urchin) lva-miR-137-3p
  19. Manduca sexta (tobacco hornworm) mse-miR-137
  20. Patiria miniata (sea bat) pmi-miR-137-3p
  21. Ptychodera flava Pfl-Mir-137-v1_3p (mature (guide))
  22. Saccoglossus kowalevskii sko-miR-137
  23. Tribolium castaneum (red flour beetle) Tca-Mir-137-v2_3p (mature (guide))