| 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) |
| beta-aspartyl(acetylglucosamine) | Misnomer for 1-(beta-asparagino)-N-acetylglucosamine or 1-(beta-aspartamido)-N-acetylglucosamine, or, formally, 1-(beta-l-aspartamido)-N-2-acetamido-1,2-dideoxy-beta-d-glucose; a compound of N-acetylglucosamine and asparagine, linked via the amide nitrogen of the latter and carbon-1 of the former. An important structural linkage in many glycoproteins. (05 Mar 2000) |
|---|