RNA (ribonucleic acid)
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- An organic acid composed of re- peating nucleotide units of adenine, guanine, cytosine, and uracil, whose ribose components are linked by phosphodiester bonds. (See Antisense RNA, Heterogeneous nuclear RNA, Messenger RNA, Ribosomal RNA, RNA polymerase, Small nuclear RNA, Transfer RNA.)
Susan Allender-Hagedorn and Charles Hagedorn - Cite This Source - This Definition - Antisense RNA, antisense therapy, messenger RNA, Messenger RNA (mRNA), mRNA, polycistronic, ribosomal DNA, Ribosomal RNA (rRNA), rRNA, sense RNA, Shine-Dalgarno sequence
- A chemical found in the nucleus and cytoplasm of cells; it plays an important role in protein synthesis and other chemical activities of the cell. The structure of RNA is similar to that of DNA. There are several classes of RNA molecules, including messenger RNA, transfer RNA, ribosomal RNA, and other small RNAs, each serving a different purpose.
Human Genome Project - Cite This Source - This Definition - ribonucleic acid (RNA), Ribosomal RNA (rRNA), Ribosome, Ribosomes, Transfer RNA (tRNA)