| MTAC | mass transfer area coefficient |
|---|---|
| MTC | mass transfer coefficient; maximum tolerated concentration; maximum toxic concentration; medical tes... |
| MTF | maximum terminal flow; medical treatment facility; modulation transfer function |
| MTR | magnetization transfer ratio; Meinicke turbidity reaction; 5-methylthioribose; methyltetrahydrofolat... |
| MTS | Medicare transaction system; magnetization transfer contrast; methotrexate; multicellular tumor sphe... |
| chromosomal RNA | RNA associated with the chromosome (not mRNA, tRNA, or rRNA) that may have a role in transcription. (05 Mar 2000) |
|---|---|
| monocistronic RNA | <molecular biology> A messenger RNA that gives a single polypeptide chain when translated. All eukaryote mRNAs are monocistronic, but some bacterial mRNAs are polycistronic especially those transcribed from operons. (18 Nov 1997) |
| polymerase, DNA or RNA | Enzymes that catalyse the synthesis of nucleic acids on pre-existing nucleic acid templates, assembling RNA from ribonucleotides or DNA from deoxyribonucleotides. (05 Mar 2000) |
| polymerase, RNA | Enzyme that catalyses (speeds) the polymerization of RNA. Rna polymerase uses preexisting nucleic acid templates and assembles the RNA from ribonucleotides. (12 Dec 1998) |
| positive strand RNA viruses | Class IV and VI viruses that have a single stranded RNA genome that can act as mRNA plus strand) and in which the virus RNA is itself infectious. Includes Picornaviridae, Togaviridae and Retroviridae. (18 Nov 1997) |
| CTP-RNA cytidylyltransferase | <enzyme> Catalyses addition of cmp residue to 3'-ends of oligonucleotide primers Registry number: EC 2.7.7.- Synonym: terminal cytidylyltransferase (26 Jun 1999) |
| pre-ribosomal RNA endoribonuclease | <enzyme> Substrate is pre-rrna Registry number: EC 3.1.26.- Synonym: pre-rrna endoribonuclease (26 Jun 1999) |
| prolyl T RNA synthetase | <enzyme> Minor descriptor (75-84); on-line and index medicus search amino acyl t RNA synthetases (75-84) Registry number: EC 6.1.1.15 Synonym: l-proline-trna-pro ligase (AMP-forming) (26 Jun 1999) |
| satellite RNA | <molecular biology> A small, self-splicing RNA molecule that accompanies several plant viruses, including tobaccoringspot virus. (09 Oct 1997) |
| heterogeneous nuclear RNA | An ill-defined form of RNA, of high molecular weight, that never leaves the nucleus and is thought to be the precursor of messenger RNA. (05 Mar 2000) |
| heterogenous nuclear RNA | <molecular biology> Originally identified as a class of RNA, found in the nucleus but not the nucleolus, which is rapidly labelled and with a very wide range of sizes, 2-40 kilobases. It represents the primary transcripts of RNA polymerase II and includes precursors of all messenger RNAs from which introns are removed by splicing. (18 Nov 1997) |
| sequence analysis, RNA | A multistage process that includes RNA cloning, physical mapping, subcloning, sequencing, and information analysis. (12 Dec 1998) |
| sisomicin-gentamicin resistance ribosomal RNA methylase | <enzyme> Catalyses the methylation of 30s ribosomal units to confer sisomicin-gentamicin resistance in micromonospora zionensis Registry number: EC 2.1.1.- Synonym: sgm gene product, sgm methylase (26 Jun 1999) |
| small nuclear RNA | <molecular biology> A nucleic acid found in all living cells. Plays a role in transferring information from DNA to the protein-forming system of the cell. (16 Dec 1997) |
| soluble RNA | rNA |