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Mechanistic studies have revealed ribonuclease (RNase) MRP, a conserved RNA-based enzyme, is crucial for the maturation of ribosomal RNA in eukaryotes. However, the composition and RNA substrate specificity of this multisubunit ribonucleoprotein complex in higher eukaryotes remain unknown. Here, we ...
ORGANISM(S): Mus musculus (Mouse) 
2025-09-15 | PXD061658 | Pride
C18orf21/RMP24 and Nepro/RMP64 are RNase MRP-specific subunits required for 40S ribosome biogenesis
RNase P and RNase MRP are evolutionarily-related ribonucleoprotein complexes that share common protein subunits, but carry out distinct site-specific endonuclease activities. Here, we identify two RNase MRP-specific proteins C18orf21 (RMP24) and Nepro (RMP64). C18orf21 contains a structurally simila...
ORGANISM(S): Homo sapiens 
2025-08-11 | GSE279079 | GEO
RNase MRP and RNase P are evolutionarily related complexes that facilitate rRNA and tRNA biogenesis, respectively. The two enzymes share nearly all protein subunits and have evolutionarily related catalytic RNAs. Notably, RNase P includes a unique subunit, RPP21, whereas no RNase MRP-specific protei...
ORGANISM(S): Homo sapiens (Human) 
2025-10-23 | PXD065571 | Pride
Ribonuclease (RNase) MRP is a conserved RNA-based enzyme that is essential for maturation of ribosomal RNA (rRNA) in eukaryotes. However, the composition and RNA substrate specificity of this multisubunit ribonucleoprotein complex in higher eukaryotes remain a mystery. Here, we identify NEPRO and C1...
ORGANISM(S): Mus musculus 
2025-08-05 | GSE290995 | GEO
Composition and RNA binding specificity of metazoan RNase MRP
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