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Related to miRNA: Sirna
Abbreviation for microribonucleic acid.
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The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
MicroRNA: short nucleotide sequences that regulate DNA expression but are not themselves transcribed.
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