| pectin | <protein> Class of plant cell wall polysaccharide, soluble in hot aqueous solutions of chelating agents or in hot dilute acid. Includes polysaccharides rich in galacturonic acid, rhamnose, arabinose and galactose, for example the polygalacturonans, rhamnogalacturonans and some arabinans, galactans and arabinogalactans. Prominent in the middle lamella and primary wall. (18 Nov 1997) |
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| pectin lyase | <enzyme> Catalyses elimination of 6-methyl-delta-4,5-galacturonate residues from pectin; brings about depolymerization of pectin; does not act on deesterified pectin Registry number: EC 4.2.2.10 Synonym: poly(methoxygalacturonide)lyase, protopectinase-r, ppase-r, pnla protein, pnla gene product, psx1 gene product, polymethoxygalacturonase (26 Jun 1999) |
| pectin sugar | D-arabinose. See: arabinose. (05 Mar 2000) |
| pectinacetylesterase | <enzyme> Vrpae1 isolated from vigna radiata; paey, also known as pecy, isolated from erwinia chrysanthemi. Registry number: EC 3.1.1.- Synonym: pectin acetylesterase, vrpae1 protein, pecy gene product, paey gene product, pectin acetyl esterase (26 Jun 1999) |
| pectinal | A fish whose bone resemble comb teeth. Source: Websters Dictionary (01 Mar 1998) |
| pectinase | <enzyme> Enzyme that degrades polygalacturonan by hydrolysis of the glycosidic bonds that link galacturonic acid residues. Important in fruit ripening and in fungal and bacterial attack on plants. (18 Nov 1997) |
| pectinate | Comb-like. (09 Oct 1997) |
| pectinate fibres | Prominent ridges of atrial myocardium located on the inner surface of much of the right atrium and both auricles. Synonym: musculi pectinati, pectinate fibres. (05 Mar 2000) |
| pectinate ligaments of iridocorneal angle | The network of fibres (pectinate ligaments) at the iridocorneal angle between the anterior chamber of the eye and the venous sinus of the sclera; it contains spaces between the fibres that are involved in drainage of the aqueous humor, and is composed of two portions: the corneoscleral part, the part attached to the sclera, and the uveal part, the part attached to the iris. Synonym: reticulum trabeculare sclerae, Gerlach's valvula, Hueck's ligament, ligamentum annulare bulbi, pectinate ligaments of iridocorneal angle, pillar of iris, trabecular meshwork, trabecular network, trabecular zone. (05 Mar 2000) |
| pectinate ligaments of iris | See: trabecular reticulum. (05 Mar 2000) |
| pectinate line | The line between the simple columnar epithelium of the rectum and the stratified epithelium of the anal canal. Synonym: linea anocutanea, anocutaneous line, dentate line. (05 Mar 2000) |
| pectinate muscles | Prominent ridges of atrial myocardium located on the inner surface of much of the right atrium and both auricles. Synonym: musculi pectinati, pectinate fibres. (05 Mar 2000) |
| pectinate zone | The outer two-thirds of the basilar membrane of the cochlear duct. Synonym: zona pectinata. (05 Mar 2000) |
| pectinated | 1. Resembling the teeth of a comb. 2. Having very narrow, close divisions, in arrangement and regularity resembling those of a comb; comblike; as, a pectinate leaf; pectinated muscles. 3. Interlaced, like two combs. "Our fingers pectinated, or shut together. <zoology>" Pectinate claw, a claw having a serrate edge, found in some birds, and supposed to be used in cleaning the feathers. Origin: L. Pectinatus, p.pr. Of pectinare to comb, from pecten, -inis, a comb; cf. Gr. To comb, AS. Feax hair, OHG. Fahs, E. Paxwax. Source: Websters Dictionary (01 Mar 1998) |
| pectineal | <anatomy> Of or pertaining to the pecten. Relating to, or connected with, the pubic bone. See: Pecten. Source: Websters Dictionary (01 Mar 1998) |