| RAS | rapid atrial stimulation; recurrent aphthous stomatitis; reflex activating stimulus; reliability, av... |
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| GAP | D-glyceraldehyde-3-phosphate; growth associated protein; guanosine triphosphatase-activating protein... |
| IAP | immunosuppressive acidic protein; inosinic acid pyrophosphorylase; Institute of Animal Physiology; i... |
| MAP | malignant atrophic papulosis; mandibular angle plane; maturation-activated protein; maximal aerobic ... |
| MBP | major basic protein; maltose-binding protein; management by policy; mannose-binding protein; mean bl... |
| acetyl-activating enzyme | A ligase that catalyses the reaction of acetate and CoA and ATP to form AMP, pyrophosphate, and acetyl-CoA. A key step in the activation of acetate. Synonym: acetate thiokinase, acetate-CoA ligase, acetyl-activating enzyme, acetyl-CoA synthetase. (05 Mar 2000) |
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| acyl-activating enzyme | <enzyme> Fatty acid thiokinase (long-chain), a ligase forming acyl-CoA, AMP, and pyrophosphate from long-chain fatty acids, ATP, and coenzyme A. Activity is independent of phosphatidylcholine Registry number: EC 6.2.1.3 Synonym: acyl-activating enzyme, dodecanoyl-CoA synthetase, fatty acid thiokinase (long chain), acid-coenzyme a ligase, fatty acid-CoA ligase, acyl-CoA synthetase, acyl-CoA ligase, coash ligase, ciprofibroyl-CoA synthetase, pristanoyl-CoA synthetase, palmityl CoA synthetase, palmitoyl CoA synthetase, palmitoyl CoA ligase, fatty acyl-CoA synthetase, very long chain fatty acid acyl-CoA synthetase, vlcfa acyl-CoA synthetase, nafenopin-CoA ligase, palmitoyl-CoA synthase, faa2 gene product, faa2p protein, vlacs enzyme (26 Jun 1999) |
| amino acid activating enzyme | <enzyme> Enzymes catalyzing the formation of a specific aminoacyl-tRNA from an amino acid and adenosine 5'-triphosphate with the concomitant formation of adenosine 5'-monophosphate and pyrophosphate. Synonym: amino acid activating enzyme, aminoacyl-tRNA ligases. (05 Mar 2000) |
| p53-activating kinase | <enzyme> Regulates p53 activity in saccharomyces cerevisiae; 810 amino acid residues; genbank u24167; do not confuse with pak I, protease-activated kinase Registry number: EC 2.7.10.- Synonym: pak1 gene product, yeast pak1 (26 Jun 1999) |
| macrophage-activating factor | An agent that stimulates macrophages to attack and ingest cancer cells. They are secreted by stimulated lymphocytes that prime macrophages to become non-specifically cytotoxic to tumours. They also modulate the expression of macrophage cell surface ia antigens. One maf is interferon-gamma (interferon type II). Other factors antigenically distinct from ifn-gamma have also been identified. (12 Dec 1998) |
| pantoate-activating enzyme | pantothenate synthetase |
| virus activating protease | <enzyme> Endoprotease from chick embryo; activates para- and orthomyoxovirus fusion glycoproteins by cleaving them at a single arginine site; ca(2+) dependent; similar to blood clotting factor x Registry number: EC 3.4.21.- (26 Jun 1999) |
| reticular activating system | <physiology> A physiological term denoting that part of the brainstem reticular formation that plays a central role in the organism's bodily and behavorial alertness. It extends as a diffusely organised neural apparatus through the central region of the brainstem into the subthalamus and the intralaminar nuclei of the thalamus; by its ascending connections it affects the function of the cerebral cortex in the sense of behavioural responsiveness; its descending (reticulospinal) connections transmit its activating influence upon bodily posture and reflex mechanisms (e.g., muscle tonus), in part by way of the gamma motor neurons. See: reticular formation. Synonym: non-specific system. (05 Mar 2000) |
| methionine-activating enzyme | <enzyme> An enzyme that catalyses the synthesis of s-adenosylmethionine from methionine and ATP. Chemical name: ATP:L-methionine S-adenosyltransferase Registry number: EC 2.5.1.6 (12 Dec 1998) |
| monocyte chemotactic and activating factor | Cytokine of the C C subfamily, co induced with IL-8 on stimulation of endothelial cells, fibroblasts or monocytes that activates and is chemotactic for, monocytes. A chemokine. (18 Nov 1997) |
| complement activating enzymes | <enzyme> Enzymes present in the complement system which activate one or more components in the system. Registry number: EC 3.- (12 Dec 1998) |
| platelet-activating factor | <cytokine> Potent phospholipid activator and mediator of many leucocyte functions, including platelet aggregation, inflammation, and anaphylaxis. It is produced in response to specific stimuli by a variety of cell types, including neutrophils, basophils, platelets, and endothelial cells. Several molecular species of platelet-activating factor have been identified which vary in the length of the O-alkyl side chain. It is an important mediator of bronchoconstriction. Synonym: platelet-aggregating factor. Acronym: PAF (20 Sep 2002) |
| connective tissue activating peptide III | Cytokine, produced from platelet basic protein, that acts as a growth factor. (18 Nov 1997) |
| insulin activating factor | <chemical> Activates insulin gene transcription in pancreatic beta cells. Synonym: insaf (05 Dec 1998) |
| osteoclast activating factor | A lymphokine that stimulates bone resorption and inhibits bone-collagen synthesis. (05 Mar 2000) |