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n. Abbr. miRNA
Any of various short, single-stranded RNA molecules that regulate gene expression by binding to messenger RNA molecules, usually in untranslated regions.
microRNAAny of a group of short (generally 21 to 24 nucleotides in length), non-coding RNA molecules which fold upon themselves (“hairpins”) and are usually cleaved from larger hairpin-containing RNA (itself often processed from some portion of mRNA).
MiRNA is conserved through evolution and plays a role in RNA interference, destroying mRNA made by specific genes, suppressing gene expression and controlling translation of target mRNAs, thereby regulating critical aspects of plant and animal development.
microRNA(mī′krō-ăr′ĕn″ā″) [″ + ″],
Oligonucleotides that prevent a variety of messenger RNAs from being transcribed from DNA or translated into proteins. They typically consist of 21 to 25 linked nucleotides.