| polysaccharide | <biochemistry> Polymers of (arbitrarily) more than about ten monosaccharide residues linked glycosidically in branched or unbranched chains. (18 Nov 1997) |
|---|---|
| polysaccharide deacetylase | <enzyme> Involved in bacteriophage penetration of bacteria Registry number: EC 3.5.1.- (26 Jun 1999) |
| polysaccharide pyruvyltransferase | <enzyme> Catalyses the pyruvylation of capsular polysaccharides; phosphoenolpyruvate is donor at the lipid-bound saccharide stage of various bacterial polysaccharides Registry number: EC 2.2.1.- Synonym: capsular polysaccharide pyruvyltransferase (26 Jun 1999) |
| polysaccharide sulfate esters | Sulfate esters of polysaccharides often found in cell walls. (05 Mar 2000) |
| polysaccharide-lyases | <enzyme> A group of carbon-oxygen lyases. These enzymes catalyze the breakage of a carbon-oxygen bond in polysaccharides leading to an unsaturated product and the elimination of an alcohol. Registry number: EC 4.2.2. (12 Dec 1998) |
| polysaccharides, bacterial | Polysaccharides found in bacteria and especially bacterial capsules. (12 Dec 1998) |
| polyscelia | A form of polymelia involving the presence of more than two legs. Origin: poly-+ G. Skelos, leg (05 Mar 2000) |
| polyscope | 1. <instrument, optics> A glass which makes a single object appear as many; a multiplying glass. 2. <medicine> An apparatus for affording a view of the different cavities of the body. Origin: Gr. Farseeing; much, many + to view: cf. F. Polyscope. Source: Websters Dictionary (01 Mar 1998) |
| polysepalous | <botany> Having the sepals separate from each other. Origin: Poly- + sepal. Source: Websters Dictionary (01 Mar 1998) |
| polyserositis | Chronic inflammation with effusions in several serous cavities resulting in fibrous thickening of the serosa and constrictive pericarditis. Synonym: Bamberger's disease, Concato's disease, multiple serositis. Origin: poly-+ L. Serum, serum, + G. -itis, inflammation Familial paroxysmal polyserositis, transient recurring attacks of abdominal pain, fever, pleurisy, arthritis, and rash; the condition is asymptomatic between attacks; autosomal recessive inheritance. There is an autosomal dominant recessive in which amyloidosis in common. Synonym: benign paroxysmal peritonitis, familial Mediterranean fever, familial recurrent polyserositis, Mediterranean fever, periodic peritonitis, periodic polyserositis. (05 Mar 2000) |
| polysialic acid | Potential regulator of cell cell interactions. Polysialic acid chains in glycoproteins, for example when covalently associated with NCAM, have negative regulatory effects on cell cell contact. The low PSA form of NCAM is thought to promote cell cell contact and enhance fasiculation whereas NCAM with a high PSA content is thought to prevent close membrane membrane apposition. (18 Nov 1997) |
| polysialic acid depolymerase | <enzyme> From E coli bacteriophage phi92; depolymerises colominic acid (alpha-neuac-(2-8))n; an endosialidase Registry number: EC 3.2.1.- Synonym: colominic acid depolymerase (26 Jun 1999) |
| polysialic acid O-acetyltransferase | <enzyme> Preferentiallly acetylates high molecular weight polymers of sialic acid of E coli capsular polysaccharide Registry number: EC 2.3.1.136 Synonym: polysialosyl acetyltransferase (26 Jun 1999) |
| polysilicic | <chemistry> Of or pertaining to compounds formed by the condensation of two or more molecules of silicic acid. <chemistry> Polysilicic acid, any one of a series of acids formed by the condensation of two or more molecules of silicic acid, with elimination of water. Origin: Poly- + silicic. Source: Websters Dictionary (01 Mar 1998) |
| polysinusitis | Simultaneous inflammation of two or more sinuses. (05 Mar 2000) |