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Like-Sm protein 1 The eukaryotic LSm proteins (LSm1-7) assemble into a hetero-heptameric ring around the 3'-terminus of the gamma-methyl triphosphate (gamma-m-P3) capped U6 snRNA. Accumulation of uridylated RNAs in an lsm1 mutant suggests an involvement of the LSm1-7 complex in recognition of the 3' uridylation tag and recruitment of the decapping machinery. LSm1-7, together with Pat1, are also called the decapping activator. Members of this family share a highly conserved Sm fold containing an N-terminal helix followed by a strongly bent five-stranded antiparallel beta-sheet. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",