A ribonucleoprotein complex that contains a precursor small nucleolar RNA (pre-snoRNA) and associated proteins, and forms during small nucleolar ribonucleoprotein complex (snoRNP) assembly. Pre-snoRNP complexes may contain proteins not found in the corresponding mature snoRNP complexes. [GOC:BHF, GOC:mah, GOC:rl, PMID:17636026, PMID:17709390]
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C5: Ontology GO: Gene Ontology GO:CC: GO Cellular Component