rRNAst
rRNAst is a term that appears in some scientific discussions to denote RNA elements associated with ribosomal RNA (rRNA) gene clusters. The term does not correspond to a single universally recognized molecule or class, and its exact definition varies by source. Some uses describe rRNAst as a short non-coding transcript arising from ribosomal DNA repeats, potentially derived from intergenic regions such as spacers, while others employ rRNAst to denote regulatory RNAs inferred to influence rRNA transcription or ribosome biogenesis.
Features attributed to rRNAst in speculative discussions often include small size, proximity to rRNA operons, and
Current status of the term is therefore debated. Experimental evidence for a distinct, functional rRNAst is
In sum, rRNAst remains a provisional concept within the literature. Additional rigorous identification, characterization, and cross-system