| poly-A, | poly(A) polyadenylic acid |
|---|---|
| poly-C, | poly(C) polycytidylic acid |
| poly-G, | poly(G) polyguanylic acid |
| poly-I, | poly(I) polyinosinic acid |
| poly-IC, | poly-I:C copolymer of polyinosinic and polycytidylic acids; synthetic RNA polymer |
| (T,G)-A--L | poly(Tyr, Glu)-poly D,L-Ala--poly Lys |
|---|---|
| poly(HEMA) | Poly(2-hydroxyethylmethacrylate |
| poly(A) | Poly(adenylic acid |
| poly(C) | poly(cytidylic acid |
| poly-PI | poly-phosphoinositide |
| rolly-poly | A kind of pudding made of paste spread with fruit, rolled into a cylindrical form, and boiled or steamed. Shaped like a rolly-poly; short and stout. Alternative forms: roly-poly. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| poly | 1. <prefix> A combining form or prefix denoting many, multiplicity, as polygon, a figure of many angles; polyatomic, having many atoms; polychord, polyconic. 2. <botany> A whitish woolly plant (Teucrium Polium) of the order Labiatae, found throughout the Mediterranean region. The name, with sundry prefixes, is sometimes given to other related species of the same genus. 3. <chemistry> A prefix meaning polymer of, as in polypeptide, polysaccharide, polynucleotide; often used with symbols, as in poly(A) for poly(adenylic acid), poly(Lys) for poly(l-lysine). Origin: G. Polys, much, many Source: Websters Dictionary (21 Jun 2000) |
| poly(3-hydroxyalkanoic acid) synthase | <enzyme> Synthesises polyhydroxyalkanoates consisting of medium-chain-length 3-hydroxyalkanoic acids, including poly(3-hydroxybutyrate) Registry number: EC 2.3.1.- Synonym: pha synthase, polyhydroxyalkanoate synthase (26 Jun 1999) |
| poly(3-hydroxyalkenoate)polymerase | <enzyme> Forms polyesters from medium chain length 3-hydroxy fatty acyl-CoA Registry number: EC 2.3.1.- Synonym: pha polymerase, phac1 gene product (26 Jun 1999) |
| poly(3-hydroxyoctanoic acid) depolymerase | <enzyme> From pseudomona fluorescens gk13; hydrolyzes p(3ho) to form mainly the dimeric ester of 3-hydroxyoctanoic acid Registry number: EC 3.1.1.- Synonym: p(3ho) depolymerase (26 Jun 1999) |
| poly A | <biochemistry, molecular biology> Polynucleotide chain consisting entirely of residues of adenylic acid (i.e. The base sequence is AAAA.AAAA). Polyadenylic chains of various lengths are found at the 3' end of most eukaryotic mRNAs, the poly A tail. (11 Jan 1998) |
| poly(A) | 1. <abbreviation> Poly(adenylic acid). 2. Iridoid indole alkaloid isolated from Vinca sp.; may have pharmacological applications; falling in this class are vinblastine and vincristine. 3. Excretion of d-glyceric acid in the urine; found in renal calculi. 4. An inborn error in metabolism resulting in d-glyceric aciduria. 5. A class of basic antibiotic peptides, found in neutrophils, that apparently kill bacteria by causing membrane damage. (05 Mar 2000) |
| poly adenosine diphosphate ribose | <chemical> A polynucleotide formed from NAD in the presence of NAD+ nucleosidase. Chemical name: Adenosine 5'-(trihydrogen diphosphate), P'-5-ester with D-ribose, homopolymer (12 Dec 1998) |
| poly ADP-ribose glycohydrolase | <enzyme> Splits ribose-ribose bonds; glycohydrolase I has a higher molecular weight and is tightly bound to mammalian cell nuclei; glycohydrolase II has lower molecular weight and is found in cytosol Registry number: EC 3.2.1.- Synonym: (ADP-ribose)n glycohydrolase I, (ADP-ribose)n glycohydrolase II (26 Jun 1999) |
| poly A hydrolase | <enzyme> Endoribonuclease and exoribonuclease isolated; specific to poly(a) Registry number: EC 3.1.4.- Synonym: polyadenylase, polyadenylate hydrolase, poly a exonuclease (26 Jun 1999) |
| poly(A) polymerase | <enzyme> An enzyme that catalyses the formation of a poly(adenylic acid) sequence. (05 Mar 2000) |
| poly-a polymerase | <enzyme> An enzyme in the nucleus of acell that adds several adenine nucleotidesto the 3' end of a primarytranscript messenger RNA. (09 Oct 1997) |
| poly A specific exoribonuclease | <enzyme> Acts on 2' or 3'-linked oligoriboadenylates to liberate 5'-AMP Registry number: EC 3.1.13.- Synonym: 2',3'-exoribonuclease, 3'-exoribonuclease (26 Jun 1999) |
| poly(A)-specific ribonuclease | <enzyme> From vigna unguiculata seedlings; bifunctional enzyme responsible for both poly(a)-polymerizing and poly(a)-hydrolyzing activities; removes the poly(a) tail as the first step in degrading mRNA Registry number: EC 3.1.13.4 Synonym: poly(a) nuclease, mRNA poly(a) nuclease, poly(a) ribonuclease (pan), pan2 protein (26 Jun 1999) |
| poly A tail | <molecular biology> A sequence of adenine nucleotides that get added to the 3' end of some primary transcript messenger RNA molecules in eukaryotes during post-transcriptional processing. The added tail is believed to confer stability to the molecule. Histone mRNA do not have poly A tail. The poly A tail is added post transcriptionally to the primary transcript as part of the nuclear processing of RNA yielding hnRNAs with 60-200 adenylate residues in the tail. In the cytoplasm the poly A tail on mRNAs is gradually reduced in length. The function of the poly A tail is not clear but it is the basis of a useful technique for the isolation of eukaryotic mRNAs. The technique uses an affinity column with oligo(u) or oligo(dT) immobilised on a solid support. If cytoplasmic RNA is applied to such a column, poly A rich RNA (mRNA) will be retained. (13 Nov 1997) |
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