AGUAGACACU

AGUAGACACU is a nine‑nucleotide single‑stranded RNA sequence. The sequence is composed of the nucleotides adenine (A), guanine (G), uracil (U), and cytosine (C) in the order 5′‑A‑G‑U‑A‑G‑A‑C‑A‑C‑U‑3′. It contains four adenine residues, three cytosine residues, one guanine, and one uracil, giving it a 44 % GC content.

The sequence is not a recognized motif in databases of functional RNA elements such as microRNAs, snoRNAs, small nucleolar RNAs, piRNAs, or riboswitches. However, it is frequently used in molecular biology as a model or test oligonucleotide. Researchers employ AGUAGACACU as a primer or probe in polymerase chain reaction (PCR) optimization, reverse transcription–quantitative PCR (RT‑qPCR) assays, and RNA‑labeling experiments. Because of its short length it serves as a convenient substrate for enzymatic assays that study the activity of nucleases, RNA‑binding proteins, or reverse transcriptases.

In synthetic biology, AGUAGACACU has been incorporated as part of modular RNA scaffolds in studies that assemble protein complexes on RNA templates. When positioned adjacent to specific binding sites, the nine‑nt fragment can influence the folding dynamics of larger RNA devices or affect the accessibility of other functional motifs.

The sequence is sometimes highlighted in educational materials to illustrate the principles of oligonucleotide synthesis, duplex stability, and sequence‑specific interactions. No significant disease association or genetic variant has been linked to AGUAGACACU. Its utility remains primarily in experimental and teaching contexts rather than in clinical diagnostics or therapeutics.