RNA, Small Nuclear

**Definition:** Short chains of RNA (100-300 nucleotides long) that are abundant in the nucleus and usually complexed with proteins in snRNPs (RIBONUCLEOPROTEINS, SMALL NUCLEAR). Many function in the processing of messenger RNA precursors. Others, the snoRNAs (RNA, SMALL NUCLEOLAR), are involved with the processing of ribosomal RNA precursors.

**Tree numbers:** - D13.444.735.628.818 - D13.444.735.790.552.937

**Synonyms:** - Low Molecular Weight Nuclear RNA - Small Molecular Weight RNA - Small Nuclear RNA - snRNA