paragraph_text: Mala jezgričina RNK (eng. small nucleolar RNA, snoRNK), vrsta nekodirajuće male RNK.<ref>Derrien, T. et al.(2011): The Long Non-Coding RNAs: A New (P)layer in the "Dark Matter". In: Front Genet. 2:107. PMID 22303401 doi: 10.3389/fgene.2011.00107 PDF Postoji kod eukariota i nekih arheja. Primarno vode kemijske modifikacije inih RNK, uglavnom ribosomskih RNK, prijenosnih RNK i malih jezgrenih RNK. Dva su glavna razreda snoRNK: O snoRNK obično se govori kao RNK vodičima (guide RNA), ali ih se ne bi smjeli brkati s RNK vodičima koji upravljaju uređivanjem RNK u tripanosomima. SnoRNK igra ulogu u genomskom upisu.<ref>K. R. Phipps, J. Charette, S. J. Baserga: The small subunit processome in ribosome biogenesis?progress and prospects. In: ''Wiley interdisciplinary reviews. RNA.'' Band 2, Nummer 1, 2011 Jan-Feb, S.&nbsp;1–21,. PMID 21318072. .<ref>M. Girardot, J. Cavaillé, R. Feil: Small regulatory RNAs controlled by genomic imprinting and their contribution to human disease. In: Epigenetics : official journal of the DNA Methylation Society. Band 7, Nummer 12, Dezember 2012, S.&nbsp;1341–1348,. PMID 23154539. .<ref>M. S. Scott, M. Ono: From snoRNA to miRNA: Dual function regulatory non-coding RNAs. In: Biochimie. Band 93, Nummer 11, November 2011, S.&nbsp;1987–1992,. PMID 21664409. PMC 3476530.