aspartic acid 2-oxoglutarate-dependent dioxygenase |
<enzyme> Hydroxylates one aspartic acid residue in the first egf-like unit of factor ix Registry number: EC 1.14.11.- Synonym: aspartate 2-oxoglutarate dioxygenase, asp-2-og-dioxygenase, aspartyl beta-hydroxylase, aspartyl (asparaginyl) beta-hydroxylase (26 Jun 1999) |
|---|---|
aspartic proteinases |
<enzyme> A sub-subclass of proteolytic enzymes which, because of the involvement of an acidic residue in the catalytic process, hydrolyzes the peptide bonds at a pH optimum below 5. Registry number: EC 3.4.23 (12 Dec 1998) |
aspartokinase homoserine dehydrogenase |
An enzyme complex consisting of aspartokinase, and homoserine dehydrogenase, The complex has been isolated from e. Coli and consists of four identical subunits with a molecular weight of 85,000. The enzyme complex is involved in the biosynthesis of amino acids of the aspartate family. (12 Dec 1998) |
aspartyl |
The aminoacyl radical of aspartic acid. (05 Mar 2000) |
aspartylglucosylaminase |
<enzyme> An enzyme that catalyses the conversion of n(4)-(beta-n-acetyl-d-glucosaminyl)-l-asparagine and water to n-acetyl-beta-d-glucosaminylamine and l-aspartate. It acts only on asparagine oligosaccharides containing one amino acid, i.e. The asparagine has free alpha-amino and alpha-carboxyl groups. Chemical name: N(4)-(beta-N-Acetyl-D-glucosaminyl)-L-asparagine amidohydrolase Registry number: EC 3.5.1.26 (12 Dec 1998) |
aspartylglycosamine |
Generic term for compounds of asparagine and a 2-amino sugar; e.g., beta-aspartyl(acetylglucosamine). (05 Mar 2000) |
aspartylglycosaminidase |
A hydrolytic enzyme that cleaves off L-aspartate from aspartylglycosamines. A deficiency of aspartylglycosaminidase can result in aspartylglycosaminuria. (05 Mar 2000) |
aspartylglycosaminuria |
One of the disorders of glycoprotein catabolism resulting from the absence of aspartylglycosamine amidohydrolase, characterised by aspartylglycosamine in the urine and spinal fluid. Symptoms develop in the first months of life, with recurrent infections and diarrhoea. Mental retardation, coarse facial features, and skeletal abnormalities are evident by adolescence. (05 Mar 2000) |
aspartyllysine peptidase |
<enzyme> From human intestinal brush border; stabilised by zn+2 Registry number: EC 3.4.13.- Synonym: zn-stable aspartyllysine peptidase (26 Jun 1999) |
aspect |
1. The act of looking; vision; gaze; glance. "The basilisk killeth by aspect." "His aspect was bent on the ground." (Sir W. Scott) 2. Look, or particular appearance of the face; countenance; mien; air. "Serious in aspect." "[Craggs] with aspect open shall erect his head." (Pope) 3. Appearance to the eye or the mind; look; view. "The aspect of affairs." "The true aspect of a world lying in its rubbish." (T. Burnet) 4. Position or situation with regard to seeing; that position which enables one to look in a particular direction; position in relation to the points of the compass; as, a house has a southern aspect, that is, a position which faces the south. 5. Prospect; outlook. "This town affords a good aspect toward the hill from whence we descended." (Evelyn) 6. <astronomy> The situation of planets or stars with respect to one another, or the angle formed by the rays of light proceeding from them and meeting at the eye; the joint look of planets or stars upon each other or upon the earth. The aspects which two planets can assume are five; sextile, when the planets are 60 deg apart; quartile, or quadrate, when their distance is 90 deg or the quarter of a circle; trine, when the distance is 120 deg; opposition, when the distance is 180 deg, or half a circle; and conjunction, when they are in the same degree. Astrology taught that the aspects of the planets exerted an influence on human affairs, in some situations for good and in others for evil. 7. <astronomy> The influence of the stars for good or evil; as, an ill aspect. "The astrologers call the evil influences of the stars evil aspects. <geometry>" Aspect of a plane, the direction of the plane. Origin: L. Aspectus, fr. Aspicere, aspectum, to look at; ad + spicere, specere, to look, akin to E. Spy. Source: Websters Dictionary (01 Mar 1998) |
aspect ratio |
<radiobiology> In toroidal geometry, the ratio of the major diameter (total width of the torus) to the minor diameter (width of a slice taken through one side of the ring). In inertial-confinement fusion, aspect ratio refers to the ratio of a fuel pellet's radius to its wall thickness. (09 Oct 1997) |
aspen |
Of or pertaining to the aspen, or resembling it; made of aspen wood. "Nor aspen leaves confess the gentlest breeze." (Gay) Source: Websters Dictionary (01 Mar 1998) |
asper |
The rough breathing; a mark (#) placed over an initial vowel sound or over to show that it is aspirated, that is, pronounced with h before it; thus hws, pronounced hs, hrj'twr, pronounced hra'tr. Origin: L. Spiritus asper rough breathing. Source: Websters Dictionary (01 Mar 1998) |
asperase |
<enzyme> Enzymatic substance with proteolytic action Registry number: EC 3.4.- (26 Jun 1999) |
asperges |
The service or ceremony of sprinkling with holy water. The brush or instrument used in sprinkling holy water; an aspergill. Origin: L, Thou shalt sprinkle. Source: Websters Dictionary (01 Mar 1998) |