| poly u | <chemical> A group of uridine ribonucleotides in which the phosphate residues of each uridine ribonucleotide act as bridges in forming diester linkages between the ribose moieties. Chemical name: 5'-Uridylic acid, homopolymer (12 Dec 1998) |
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| 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) | 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(A) polymerase | <enzyme> An enzyme that catalyses the formation of a poly(adenylic acid) sequence. (05 Mar 2000) |
| 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(beta-D-mannuronate) lyase | <enzyme> Amino acid sequence has been determined for sp1 and sp2 isoenzymes from midgut of wreath shell, turbo cornutus Registry number: EC 4.2.2.3 Synonym: poly(1,4-beta-d-mannuronide)lyase, alginate lyase I, alginate lyase, aly gene product, mannuronate lyase sp1, mannuronate lyase sp2 (26 Jun 1999) |
| poly(gamma-glutamic acid) | A polypeptide formed of glutamic acid residues, the gamma-carboxyl group of one glutamic acid being condensed to the amino group of its neighbor; occurs naturally in the anthrax bacillus capsule. (05 Mar 2000) |
| poly(glycolic acid) | A polymer of glycolic acid, used in absorbable surgical sutures. Origin: see poly- (05 Mar 2000) |
| poly(N-acetylgalactosamine) deacetylase | <enzyme> Catalyses the hydrolyses of acetamido groups of poly(galnac); from a. Parasiticus Registry number: EC 3.5.1.- Synonym: poly(galnac) deacetylase (26 Jun 1999) |
| poly(u) | <abbreviation> Poly(uridylic acid). (05 Mar 2000) |
| poly(uridylic acid) | A homopolymer of uridylic acids. (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-beta-glucosaminidase | <enzyme> An enzyme which breaks down chitin, which is a polysaccharide that forms the hard outer shell of arthropods (insects, spiders, crustaceans, etc.), and the cell walls of fungi, and some algae. (09 Oct 1997) |