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U8: U8 is a metazoan-specific C/D box snoRNA that is involved in ribosomal biogenesis and aids in rRNA processing [PMC9703455]. Knockdown of DDX5 and DDX17 leads to increased cellular levels of U8 snoRNA, and impairs its dissociation from pre-ribosomes [PMC9196750]. NOP2/NSUN1, a protein, interacts with U3 and U8 snoRNPs in the nucleoplasm or nucleolus, suggesting its involvement in box C/D snoRNPs biogenesis [PMC9561284]. Abnormal expression of U3 and U8 snoRNAs has been observed in BC cells [PMC8005115]. The Xenopus protein has been shown to efficiently bind to U8 snoRNA through EMSA and UV-mediated RNA-protein cross-linking experiments [PMC2566886]. Mutations in the U8 gene have been found outside regions of known functional importance [PMC8993069]. The unusual values of ε and ζ in U7, U14, and U15 form extended structures with U8 at the 3' side [PMC2425495]. Probes targeting the urease gene have been designed for specific detection of U. urealyticum (U3) and U. parvum (U8) using overlapping species-specific probes [PMC4105565]. While the functions of U3 or U8 are not fully understood, their high abundance suggests they may have non-conventional functions within cells [PMC5312328]. The effect of depleting either U3 or U8 on nucleolar structure was found to be dependent on the presence of p53 protein [PMC5312328]. Proteins were pre-incubated with labeled 4-thioU RNA for further analysis involving UCBSV (U8) from a field sample collected in Uganda's Mayuge district [PMC5093738]. ChromHMM states were converted into numerical values based on their openness, with U8 being one of the states [PMC8891870].
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