Activity that provides specificity to a pseudouridine synthetase by using base complementarity to guide site-specific pseudouridylations to a small nuclear RNA molecule.
Source:PMID:11733745
Comment
Note that this term describes the activity of a nucleic acid, usually RNA, gene product that interacts with other RNA molecules via base pairing; it should not be used to annotate proteins. Note that this term may be useful for annotating snoRNAs.