RNA metabolic process | RNA processing | regulation of mRNA processing | cellular process | regulation of cellular process | regulation of metabolic process | regulation of mRNA splicing, via spliceosome | organic cyclic compound metabolic process | cellular aromatic compound metabolic process | cellular nitrogen compound metabolic process | mRNA metabolic process | nitrogen compound metabolic process | regulation of gene expression | regulation of nitrogen compound metabolic process | regulation of alternative mRNA splicing, via spliceosome | regulation of cellular metabolic process | regulation of RNA metabolic process | metabolic process | regulation of RNA splicing | nucleobase-containing compound metabolic process | organic substance metabolic process | gene expression | heterocycle metabolic process | cellular metabolic process | mRNA processing | macromolecule metabolic process
intracellular membrane-bounded organelle | cell | nuclear lumen | nucleolus | intracellular organelle | protein-containing complex | ribonucleoprotein complex | membrane-bounded organelle | preribosome | nucleus | organelle | membrane-enclosed lumen | small-subunit processome | intracellular