| adrenergic beta-agonists | Drugs that selectively bind to and activate beta-adrenergic receptors. (12 Dec 1998) |
|---|---|
| adrenergic beta-antagonists | Drugs that bind to but do not activate beta-adrenergic receptors thereby blocking the actions of beta-adrenergic agonists. Adrenergic beta-antagonists are used for treatment of hypertension, cardiac arrythmias, angina pectoris, glaucoma, migraine headaches, and anxiety. (12 Dec 1998) |
| alpha-1,3-mannosylglycoprotein beta-1,4-N-acetylglucosaminyltransferase | <enzyme> Incorporates n-acetyglucosamine as the third branch of complex n-glycosyl-oligosaccharide of hen oviduct Registry number: EC 2.4.1.145 Synonym: glcnac-transferase iv, n-acetylglucosaminyltransferase iv, udp-glcnac-gngn(glcnac to man alpha1-3)beta 4-n-acetylglucosaminyltransferase iv (26 Jun 1999) |
| alpha-amino-beta-ketoadipic acid | 2-Amino-3-oxo-1,6-hexanedioic acid;an intermediate of porphobilinogen synthesis formed by d-aminolevulinic acid synthase from succinyl-CoA and glycine; it rapidly decarboxylates to d-aminolevulinic acid. (05 Mar 2000) |
| alpha,beta-ketoalkene reductase | <enzyme> Nadh is much less effective than NADPH; catalyses the reduction of the carbon-carbon double bond of five membered ring cpds which have two conjugated carbonyl groups on both sides of a double bond Registry number: EC 1.3.1.- Synonym: n-ethylmaleimide reducing enzyme, NADPH-linked alpha,beta-ketoalkene double bond reductase, n-ethylmaleimide reductase (26 Jun 1999) |
| alpha-D-mannose-beta-1,2-N-acetylglucosaminyltransferase | <enzyme> Absolute specificity for terminal branched mannosyl residues of glycolipids Registry number: EC 2.4.1.- Synonym: udpgnac-1,2-magtransferase (26 Jun 1999) |
| amygdalin beta(1-6)glucosidase | <enzyme> Forms prunasin and glucose Registry number: EC 3.2.1.- Synonym: laetrile glucosidase, amygdalin hydrolase I, amygdalin hydrolase II (26 Jun 1999) |
| amyloid beta-protein | A 4 kD protein, 39-43 amino acids long, expressed by a gene located on chromosome 21. It is the major protein subunit of the vascular and plaque amyloid filaments in individuals with alzheimer's disease and in aged individuals with trisomy 21 (down syndrome). The protein is found predominantly in the nervous system, but there have been reports of its presence in non-neural tissue. (12 Dec 1998) |
| amyloid beta-protein precursor | A precursor to the amyloid-beta protein (beta/a4). Alterations in the expression of the amyloid beta-protein precursor (abpp) gene, located on chromosome 21, plays a role in the development of the neuropathology common to both alzheimer disease and down syndrome. Abpp is associated with the extensive extracellular matrix secreted by neuronal cells. Upon cleavage, this precursor produces three proteins of varying amino acid lengths: 695, 751, and 770. The beta/a4 (695 amino acids) or beta-amyloid protein is the principal component of the extracellular amyloid in senile plaques found in alzheimer disease, down syndrome and, to a limited extent, in normal aging. (12 Dec 1998) |
| androst-16-en-3 beta-ol sulfotransferase | <enzyme> A beta sulfotransferase Registry number: EC 2.8.2.- Synonym: aebo sulfotransferase (26 Jun 1999) |
| androsta-5,16-dien-3 beta-ol synthetase | <enzyme> Nadph- and o(2)-dependent; converts progesterone to 4,16-androstadien-3-one and converts pregnenolone to androstadienol Registry number: EC 1.- Synonym: pregnenolone side-chain cleavage enzyme, 5,16-androstadien-3 beta-ol synthetase, 5,16-androstadien-3-ol synthase, 4,16-androstadien-3-one synthesizing enzyme, 4,16-adien-3-one synthase, 4,16-ado synthase, delta(16)-c(19)-steroid synthetase, andien-beta-synthetase, 16-ene-synthetase (26 Jun 1999) |
| beta | Entry pre fix is generally ignored for alphabetical reference, look for main portion of word. (18 Nov 1997) |
| beta (1)-anticollagenase | <chemical> A serum protein inhibitor (26 Jun 1999) |
| beta-(2-furyl)-acryloyl phosphate hydrolase | <enzyme> Used as synthetic substrate for atpase assay Registry number: EC 3.6.1.- Synonym: bfa phosphatase (26 Jun 1999) |
| beta 2-microglobulin | An 11 kD protein associated with the outer membrane of many cells including lymphocytes. It is the small subunit of the MHC class I molecule. Association with beta 2-microglobulin is generally required for the transport of class I heavy chains from the endoplasmic reticulum to the cell surface. Beta 2-microglobulin is present in small amounts in serum, csf, and urine of normal people, and to a much greater degree in the urine and plasma of patients with tubular proteinaemia, renal failure, or kidney transplants. (12 Dec 1998) |