| calcium, dietary | Calcium compounds used as food supplements or in food to supply the body with calcium. Dietary calcium is needed during growth for bone development and for maintenance of skeletal integrity later in life to prevent osteoporosis. (12 Dec 1998) |
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| calcium-45 | <radiobiology> Most easily available of the radioactive calcium-45 isotopes; beta-emitter with a half-life of 162.7 days; used as a tracer. (05 Mar 2000) |
| calcium-47 | <radiobiology> A radioisotope of calcium with a half-life of 4.54 days, used in the diagnosis of disorders of calcium metabolism. (05 Mar 2000) |
| calcium-binding protein | <biochemistry> There are two main groups of calcium binding proteins, those that are similar to calmodulin and are called EF hand proteins and those that bind calcium and phospholipid (e.g. Lipocortin) and that have been grouped under the generic name of annexins. Many other proteins will bind calcium, although the binding site usually has considerable homology with the calcium-binding domains of calmodulin. They can act as transport proteins, regulator proteins or activator proteins. There is also a vitamin D-dependent variant which is a protein that plays a fundamental role in the vitamin d mediated transport of calcium in reptiles, amphibians, birds and mammals. It is found in the intestine, kidneys, egg shell gland, brain, and possibly other organs. Its molecular weight is species dependent. (12 May 2002) |
| calcium-calmodulin dependent protein kinase | <enzyme> A calmodulin-dependent enzyme that catalyses the phosphorylation of proteins. This enzyme is also sometimes dependent on calcium. A wide range of proteins can act as acceptor, including vimentin, synapsin, glycogen synthase, myosin light chains, and the microtubule-associated proteins. Registry number: EC 2.7.10.- (12 Dec 1998) |
| calcium-calmodulin-activated histone 3 arginine kinase | <enzyme> From nuclear extracts of dividing and quiescent rat heart endothelial cells; represents a new class of ca-cam-dependent kinases which phosphorylate arg Registry number: EC 2.7.10.- Synonym: ca(2+)-calmodulin-activated histone 3 arg kinase, ca-cam h3 kinase (26 Jun 1999) |
| calcium-calmodulin-dependent phosphodiesterase | <enzyme> Hydrolyzes both cgmp and camp; induced during mitogenesis Registry number: EC 3.1.4.- Synonym: ca-cam-phosphodiesterase, calmodulin-dependent cgmp phosphodiesterase (26 Jun 1999) |
| calcium-dependent protein kinase | <enzyme> Mw 51,000; requires ca; not stimulated by calmodulin, phospholipids or diacylglycerol; phosphorylates casein and histones forming primarily phosphoserine and phosphothreonine, respectively Registry number: EC 2.7.1.- Synonym: paramecium ca-dependent protein kinase (26 Jun 1999) |
| calcium-independent processing protease | <enzyme> Converts hiv-1 gp160 precursor to gp120 and gp41 Registry number: EC 3.4.- Synonym: viral envelope glycoprotein maturase, vem enzyme (26 Jun 1999) |
| calcium-transporting atpase | <enzyme> An enzyme found in the sarcoplasmic reticulum vesicle membrane. During the relaxation of skeletal muscles and muscle rich in mitochondria, this enzyme catalyses the active transport of calcium into the sarcoplasmic reticulum vesicles from the sarcoplasm. It requires micromolar concentrations of calcium and utilises mgatp as a substrate. Chemical name: ATP phosphohydrolase (Calcium-transporting) Registry number: EC 3.6.1.38 (12 Dec 1998) |
| calciuria | The presence of calcium in the urine. Origin: Gr. Ouron = urine (18 Nov 1997) |
| calcivirus | <virology> Genus of Picornaviridae. (18 Nov 1997) |
| calcodynia | Synonym: painful heel. Origin: L. Calx, heel, + G. Odyne, pain (05 Mar 2000) |
| calcophorous | Synonym: calciferous. Origin: L. Calx, lime, + G. Phoros, bearing (05 Mar 2000) |
| calcospherite | A tiny, spheroidal, concentrically laminated body containing accretive deposits of calcium salts; found most frequently in papillary carcinoma of the thyroid and ovary, and in meningioma, probably as the result of degenerative changes in the fibrovascular stroma. Synonym: psammoma bodies. Origin: L. Calx, lime, + G. Sphaira, sphere (05 Mar 2000) |
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| calcareous |
refers to soils or an area with soils containing large amounts of calcium carbonate, usually derived from limestone sediment.
Ãâó: www.nps.gov/plants/restore/library/glossary.htm
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| calcareous |
composed of, or containing lime or limestone
Ãâó: www.deh.gov.au/soe/2001/land/glossary.html
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| calcium |
(Ca, #20) a hard, silvery metallic element found in teeth, bones, leaves, and shells
Ãâó: www.msnucleus.org/membership/html/k-6/rc/dictionar...
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| calcar |
1. a spur or spurlike process projecting from the leg of a bird. 2. a bony or cartilaginous process on the heel bone of bats, which helps to support the portion of the wing membrane lying between the legs (Morris 1992).
Ãâó: imnh.isu.edu/digitalatlas/glossary/letter.asp
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| calcium sulfate |
known as gypsum can be used to amend soil acidity and is also useful for lightening the structure of heavy clays. Gypsum can be purchased or can sometimes be obtained from old domestic plaster.
Ãâó: www.nationmaster.com/encyclopedia/Soil-pH
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