| beta-CM | beta-Casomorphins |
|---|---|
| beta-CN | beta-casein |
| beta-CNA | beta-Chlornaltrexamine |
| beta-CyD | 1/beta-cyclodextrin |
| beta-EI | beta-endorphin like immunoreactivity |
| beta-END | Beta-Endorphin |
| beta-END-LI | Beta-endorphin-like immunoreactivity |
| beta-EP | beta-Endorphine |
| beta-EP-LI | beta-Endorphin-like immunoreactivity |
| beta-FNA | Beta-funaltrexamine |
| beta-galactosidase | <enzyme> A group of enzymes that catalyses the hydrolysis of terminal, non-reducing beta-d-galactose residues in beta-galactosides. Chemical name: beta-D-Galactoside galactohydrolase Registry number: EC 3.2.1.23 (12 Dec 1998) |
|---|---|
| beta-galactoside alpha-2,3-sialyltransferase | <enzyme> Transfers sialic acid residue from cmp-n-acetylneuraminic acid to an acceptor galactoside Registry number: EC 2.4.99.4 Synonym: alpha 2-3-sialyltransferase, cmp-neuac-galactoside (alpha 2-3)-sialyltransferase, cmp-angs-transferase, cmp n-acetylneuraminate-beta-galactoside alpha-2,3-sialyltransferase, cmpsialic acid beta-galactosyl-1-3-n-acetylgalactosaminide alpha 2-3-sialyltransferase, beta-d-galactoside 3-alpha-sialyltransferase, cmp-acetylneuraminate-galactoside (alpha 2-3)-sialyltransferase, asialofetuin sialyltransferase, gal beta1,3galnac alpha2,3-sialyltransferase, cmp-neu5ac-gal beta1-3galnac alpha-2,3-sialyltransferase, cmp-neu5ac-gal1-3galnac alpha-2,3-sialyltransferase, alpha-2,3-st(o) (26 Jun 1999) |
| beta-galactoside permease | <chemical> Chemical name: permease, beta-galactoside (26 Jun 1999) |
| beta-galactosyl(1-3)N-acetylglucosaminide alpha(2-3)-sialyltransferase | <enzyme> Found in rat liver golgi apparatus Registry number: EC 2.4.99.- Synonym: gal-1-3-glcnac-sialyltransferase (26 Jun 1999) |
| beta-galactosylceramidase | <enzyme> An enzyme that participates in the catabolism of certain ceramides; a deficiency of beta-galactosylceramidase is associated with Krabbe's disease. (05 Mar 2000) |
| beta-globulins | The serum globulins with an electrophoretic mobility in neutral or alkaline solutions intermediate between that of alpha-globulins and gamma-globulins. (12 Dec 1998) |
| beta-glucocerebrosidase | <enzyme> An enzyme that hydrolyzes beta-glucosides in cerebrosides; a deficiency of this enzyme results in Gaucher disease. (05 Mar 2000) |
| beta-glucosidase | <enzyme> An enzyme that catalyses the hydrolysis of terminal non-reducing residues in beta-d-glucosides with release of beta-glucose. Chemical name: beta-D-Glucoside glucohydrolase Registry number: EC 3.2.1.21 (12 Dec 1998) |
| beta-glucosyl-hydroxymethylcytosine-alpha-glucosyltransferase | <enzyme> Generates gentobiosyl groups on the hydroxymethylcytosine of phage t2 and t6 DNA Registry number: EC 2.4.1.- Synonym: b-glc-hmc-a-glucosyltransferase (26 Jun 1999) |
| beta-haemolytic streptococci | Those that produce active haemolysins (O and S) which cause a zone of clear haemolysis on the blood agar medium in the area of the colony; beta-haemolytic streptococci are divided into groups (A to O) on the basis of cell wall C carbohydrate (see Lancefield classification); Group A (in the strains pathogenic for man) comprises more than 50 types (designated by Arabic numerals) determined by cell wall M protein, which seems to be associated closely with virulence and is produced chiefly by strains with matt or mucoid colonies, in contrast to nonvirulent, glossy colony-producing strains; other surface protein antigens such as R and T (T substance), and the nucleoprotein fraction (P substance) seem to be of less importance. The more than 20 extracellular substances elaborated by strains of beta-haemolytic streptococci include erythrogenic toxin (elaborated only by lysogenic strains), deoxyribonuclease (streptodornase), haemolysins (streptolysins O and S), hyaluronidase, and streptokinase. Synonym: haemolytic streptococci. (05 Mar 2000) |
| beta-hydroxy-beta-methylglutaryl-CoA | -OOCCH2C(OH)(CH3)CH2COS-CoA;a key intermediate in the synthesis of ketone bodies and of steroids. Synonym: 3-hydroxy-3-methylglutaryl-CoA. Beta-hydroxy-beta-methylglutaryl-lyase, an enzyme, found primarily in liver and rumen epithelium that catalyses the formation of acetyl-CoA and acetoacetate from beta-hydroxy-beta-methylglutaryl-CoA; a key step in ketogenesis; a deficiency of this enzyme leads to episodes of severe metabolic acidosis without ketosis. Beta-hydroxy-beta-methylglutaryl-reductase, an enzyme that catalyses the rate-limiting step of cholesterol biosynthesis, beta-hydroxy-beta-methylglutaryl-CoA + 2NADPH + 2H+ → mevalonate + 2NADP+ + coenzyme A. Beta-hydroxy-beta-methylglutaryl-synthase, an enzyme in mitochondria that catalyses the reaction of acetyl-CoA with acetoacetyl-CoA and water to form beta-hydroxy-beta-methylglutaryl-CoA and coenzyme A, a step required for both ketogenesis and steroidogenesis to occur. (05 Mar 2000) |
| beta-hydroxyacyl-(acyl-carrier-protein)dehydrase | <enzyme> In fatty acid synthesis; specific for acyl carrier protein; cannot use acyl CoA; see also faba gene product Registry number: EC 4.2.1.- Synonym: beta-ohacyl-acp dehydrase, beta-hydroxyacyl-acyl carrier protein dehydratase, fabz gene product (26 Jun 1999) |
| beta-hydroxybutyric acid | CH3CH(OH)CH2COOH;the d-stereoisomer is one of the ketone bodies and is formed in ketogenesis; it is an important fuel for extrahepatic tissues; as an acyl derivative it is also an intermediate in fatty acid biosynthesis. The l-isomer is found as a coenzyme A derivative in b oxidation of fatty acids. Synonym: 3-hydroxybutanoic acid, beta-hydroxybutyric acid. D-3-hydroxybutyric acid dehydrogenase, an enzyme that reversibly catalyses the interconversion of the two main ketone bodies, catalyzing acetoacetate + NADH + H+ &dblarr; d-3-hydroxybutyrate + NAD+. (05 Mar 2000) |
| beta-hydroxyisobutyric acid | HOCH2CH(CH3)COOH;an intermediate in the degradation of l-valine. (05 Mar 2000) |
| beta-hydroxypropionic acid | A minor intermediate in propionate and methylmalonate metabolism. See: beta-hydroxypropionic aciduria. (05 Mar 2000) |
| delta(5)-3 beta-hydroxysteroid dehydrogenase | <enzyme> Converts dehydroepiandrosterone to delta-4-androstene-3,17-dione Registry number: EC 1.1.1.- Synonym: dbhdase, 3 beta-hydroxy-5-ene-steroid dehydrogenase, steroid-delta(5)-3-ol dehydrogenase (26 Jun 1999) |
|---|---|
| diadenosine 5,5'''-P(1),P(4)-tetraphosphate alpha,beta-phosphorylase | <enzyme> Ap4a + inorganic po4 forms ATP + ADP Registry number: EC 2.7.7.53 Synonym: ap4a phosphorylase, ATP adenylyltransferase (26 Jun 1999) |
| dihydro-beta-erythroidine | <chemical> Dihydro analog of beta-erythroidine, which is isolated from the seeds and other plant parts of erythrina sp. Leguminosae. It is an alkaloid with curarimimetic properties. Chemical name: 16(15H)-Oxaerythrinan-15-one, 1,6-didehydro-14,17-dihydro-3-methoxy-, (3beta)- (12 Dec 1998) |
| DNA beta-glucosyltransferase | <enzyme> Transfers a beta-d-glucosyl residue from udp-glucose to hydroxymethylcytosine residues in double-stranded DNA Registry number: EC 2.4.1.27 Synonym: udp-glucose-DNA beta-d-glucosyltransferase, udp-glucose - 5-hydroxymethylcytosine beta-glucosyltransferase (26 Jun 1999) |
| DNA polymerase beta | <enzyme> A DNA repair enzyme that catalyses DNA synthesis during base excision DNA repair. Registry number: EC 2.7.7.- (12 Dec 1998) |
| dopamine beta-hydroxylase | <enzyme> Chemical name: 3,4-Dihydroxyphenethylamine, ascorbate:oxygen oxidoreductase (beta-hydroxylating) Registry number: EC 1.14.17.1 (12 Dec 1998) |
| dopamine beta-monooxygenase | A copper-containing enzyme catalyzing oxidation of ascorbate and 3,4-dihydroxyphenylethylamine simultaneously by O2 to yield norepinephrine, dehydroascorbate, and water; a crucial step in catecholamine metabolism. Synonym: dopamine beta-hydroxylase. (05 Mar 2000) |
| D-(-)-phenylglycyl-beta-lactamide amidohydrolase | <enzyme> Highly specific for substrates containing an alpha-aminophenylacetic group in the acyl moiety; from xanthomonas sp. Registry number: EC 3.5.1.- Synonym: pg-lactamide amidohydrolase (26 Jun 1999) |
| D-selenocystine alpha, beta-lyase | <enzyme> From clostridium sticklandii; pyridoxal-p enzyme; mw 74kda; decomposes d-selenocystine into pyruvate, nh3 and elemental selenium; d-cystine, d-lanthionine, meso-lanthionine and d-cysteine can also serve as substrates; d-selenocysteine, d-serine, dl-selenohomocystine and l-amino acids are inert Registry number: EC 4.99.- Synonym: dsc-ab-lyase (26 Jun 1999) |
| q beta phage | <molecular biology> A single-stranded RNA phage that specifically infects enterobacteria containing the f plasmid. It is widely used to study RNA phage and bacterial cell function. (10 Oct 1997) |
| q beta replicase | <enzyme> An enzyme that catalyses the replication of the RNA of coliphage q beta. Registry number: EC 2.7.7.- (12 Dec 1998) |
| indole-3-acetate beta-glucosyltransferase | <enzyme> Catalyses the conversion of indol-3-ylacetic acid and udp-glucose to 1-o-(indol-3-ylacetyl)-beta-d-glucose and udp Registry number: EC 2.4.1.121 Synonym: udp-glucose-indol-3-ylacetate beta-d-glucosyltransferase, 1-o-(indol-3-ylacetyl)-beta-d-glucose synthase, iab glucosyltransferase, udp-glucose-indoleacetic acid glucosyl transferase, iaa-glucose synthetase, iaglu gene product (26 Jun 1999) |
| interferon-beta | <cytokine> One of the type I interferons produced by fibroblasts in response to stimulation by live or inactivated virus or by double-stranded RNA. It is a cytokine with antiviral, antiproliferative, and immunomodulating activity. Synonym: fibroblast interferon. Pharmacological action: adjuvants, immunologic, antineoplastic agent, antiviral agents. Chemical name: Interferon-alphaB (human leukocyte protein moiety reduced) (12 Dec 1998) |
| IV(3)beta-glucuronyl neolactotetraosylceramide sulfotransferase | <enzyme> Catalyses the final step in sulfoglucuronyl glycolipid biosynthesis, in which sulfate from 3'-phosphoadenosine 5'-phosphosulfate is transferred to a hydroxy group on carbon 3 of the terminal glucuronyl residue in iv(3)beta-glucuronyl neolactotetraosylceramide Registry number: EC 2.8.2.- Synonym: ggl-st, glcanlcose(4)cer sulfotransferase, glucuronylglycolipid sulfotransferase, ggl-3-sulfotransferase (26 Jun 1999) |
| testosterone 16 beta-hydroxylase | <enzyme> See also record for testosterone hydroxylase Registry number: EC 1.14.99.- Synonym: ttt 16 beta-hydroxylase (26 Jun 1999) |
Synonyms : beta-Keratin, beta Keratin, beta Keratins
Synonyms : beta Lactam Resistance, beta-Lactam Resistances
Synonyms : beta-Lactamase, beta Lactamase, beta Lactamases
Synonyms : beta Lactams
Synonyms : Adipozin, beta-LPH, beta-Lipotrophin, beta LPH, beta Lipotrophin, beta Lipotropin
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| beta-endorphin |
A substance produced in the brain, especially in the pituitary gland, that blocks the sensation of pain. It is produced in response to pain, exercise, and other forms of stress. It belongs to a group of chemicals called polypeptide hormones.
Ãâó: www.stjude.org/glossary
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| beta particle |
(Or particle.) Physically indistinguishable from the electron (or positron) but usually restricted to products in nuclear reactions (beta decay). The term was coined by Ernest Rutherford, who discovered that the ionizing radiation emitted by uranium consisted of
Ãâó: amsglossary.allenpress.com/glossary/browse
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| beta ray |
(Or beta radiation.) A stream of beta particles; can also mean a single beta particle.
Ãâó: amsglossary.allenpress.com/glossary/browse
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| beta carotene |
a pigment found in orange vegetables and fruits, which the body converts to vitamin A; possibly protects against cancer
Ãâó: www.american-depot.com/services/resources_gl_b.asp
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| beta rhythm |
Neural rhythmic activity (12?5 cycles per second).
Ãâó: www.nature.com/nrn/journal/v2/n4/glossary/nrn0401_...
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