| OEM | opposite ear masked; original electronic manufacturer |
|---|---|
| mRNA | messenger Ribo-Nucleic Acid |
| H-mRNA | H-chain messenger ribonucleic acid |
| mRNA | messenger ribonucleic acid |
| pre-mRNA | precursor messenger ribonucleic acid |
| pre-mRNA | Precursor mRNA |
|---|---|
| mRNA | E-messenger RNA |
| mRNA | Messenger ribonucleic acid |
| NMD | Nonsense-mediated mRNA decay |
| mRNA | RNA |
| masked | 1. Wearing a mask or masks; characterised by masks; cincealed; hidden. 2. <botany> Same as Personate. 3. <ornithology> Having the anterior part of the head differing decidedly in colour from the rest of the plumage; said of birds. Masked ball, a ball in which the dancers wear masks. Masked battery, a battery so placed as not to be seen by an enemy until it opens fire. 4. <zoology> Masked crab, a Japanese domestic hog (Sus pliciceps). Its face is deeply furrowed. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| masked epilepsy | A form of epilepsy characterised by a paroxysmal disturbance, such as headache or vomiting, associated with an epileptic electroencephalographic pattern. (05 Mar 2000) |
| masked gout | latent gout |
| masked hyperthyroidism | Hyperthyroidism occurring without the usual manifestations, especially lack of hyperactivity and eye findings, often with hypoactivity, even somnolence. Manifestation can be limited to heart failure. (05 Mar 2000) |
| masked messenger RNA | <molecular biology> Long lived and stable mRNA found originally in the oocytes of echinoderms and constituting a store of maternal information for protein synthesis that is unmasked (derepressed) during the early stages of morphogenesis. In these early stages the rate of cell division is so rapid that transcription from the embryonic genome cannot occur. Undoubtedly not restricted to oocytes and the term can be applied to any mRNA which is present in inactive form. (18 Nov 1997) |
| masked virus | A virus ordinarily occurring in the host in a noninfective state, but which may be activated and demonstrated by special procedures such as blind passage in experimental animals. (05 Mar 2000) |
| double-masked experiment | A double-blind study conducted so neither the subject nor the observer know the identity of the control or variable. (05 Mar 2000) |
| alternative mRNA splicing | Splicing different exons in or out of messenger RNA to form different mRNA transcripts. (09 Oct 1997) |
| capping of mRNA | The process of adding a guanosine nucleotide to the 5'-end (the beginning) of an eukaryotic mRNA, then methylating (adding a -CH3 to) the guanosine. (09 Oct 1997) |
| maternal mRNA | <molecular biology> Messenger RNA found in oocytes and early embryos that is derived from the maternal genome during oogenesis. See: masked messenger RNA. (18 Nov 1997) |
| mRNA | <molecular biology> Single stranded RNA molecule that specifies the amino acid sequence of one or more polypeptide chains. This information is translated during protein synthesis when ribosomes bind to the mRNA. In prokaryotes, mRNA is normally formed by splicing a large primary transcript from a DNA sequence and protein synthesis starts while the mRNA is still being synthesised. Prokaryote mRNAs are usually very short lived (average t 1/2 is 5mins.). In contrast, in eukaryotes the primary transcripts (HnRNA) are synthesised in the nucleus and they are extensively processed to give the mRNA that is exported to the cytoplasm where protein synthesis takes place. This processing includes the addition of a 5' 5' linked 7 methyl guanylate cap at the 5' end and a sequence of adenylate groups at the 3' end, the poly A tail, as well as the removal of any introns and the splicing together of exons, only 10% of HnRNA leaves the nucleus. Eukaryote mRNAs are comparatively long lived with a half life ranging from 30minutes to 24 hours. (27 Jun 1999) |
| mRNA (2'-O-methyladenosine-N6-)-methyltransferase | <enzyme> Involved in capping mRNA Registry number: EC 2.1.1.62 Synonym: mRNA n(6)-adenosine methyltransferase, mra methyltransferase, RNA(2'-o-methyladenosine-n(6)-)methyltransferase (26 Jun 1999) |
| mRNA(adenine-N6)-methyltransferase | <enzyme> Methylates mRNA at internal adenosine within the consensus sequence puac(a/c/u) Registry number: EC 2.1.1.- Synonym: mRNA-a-n6-methyltransferase, mRNA(adenine-n6)-methylase (26 Jun 1999) |
| mRNA (guanine(N7))-methyltransferase | <enzyme> Catalyses s-adenosyl-l-methionine and g(5')pppr-RNA to yield s-adenosyl-l-homocysteine and m(7)g(5')pppr-RNA; mRNA containing an n(7)-methylguanine cap Registry number: EC 2.1.1.56 Synonym: mRNA (guanine-7-)methyltransferase, mRNA(guanine-7-)methyltransferase, RNA (guanine-7) methyltransferase, abd1 gene product (26 Jun 1999) |
| mRNA guanylyltransferase | <enzyme> Catalyses transfer of GMP residue from GTP to 5' end of RNA to form cap structure identified as g(5')pppn; can also modify synthetic poly(a) and poly(g) to form m7g(5')pppan and m7g(5')pppgn; see also capping enzyme, vaccinia virus Registry number: EC 2.7.7.50 Synonym: RNA guanylyltransferase, m-RNA guanylyltransferase, GTP mRNA guanylyltransferase, mRNA capping enzyme, mRNA 5'-guanylyltransferase, cgt1 gene product, ceg1 gene product (26 Jun 1999) |
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