Classification of phosphates

Brakoulias A, Jackson RM (2004) Towards a structural classification of phosphate binding sites in protein-nucleotide complexes an automated all-against-all structural comparison using geometric matching. Proteins Struct Funct Bioinformatics 56 250-260... 

The affinity between the tetrahedrally arranged orthophosphate oxyanion, P04, and hexava-lently coordinated metal cations lends itself to a classification of phosphate minerals in a scheme similar to silicates (SiO -) framework, insular, chain, and layer phosphates. Examples of this scheme, advanced by Povarennykh (1972) and further elaborated by Lindsay Vlek (1977), include berlinite (AIPO4 framework) hydroxyapatite (insular) monetite (CaHP04, chain) and vivianite (Fe4(P04)2-2H2O, layer). 

V. Galperin, et al, Dry Classification of Phosphate Ore in Chilisai Phosphate Field, Chem Industry, 12, Moscow, 1988. 

Table 11-2. The World Health Organization Classification of Glucose 6-phosphate Dehydrogenase Activity Variants ...

At present there are >100 protein kinase-inhibitor structures in publidy available structural databases which span 28 kinases and a variety of inhibitor structural classes. Based upon an analysis of these data a classification of ATP binding regions has been proposed by Traxler and Furet [59] and Bower (personal communication from Michael J. Bower, December 1999). In the subsequent discussion a slightly modified version of this classification will be used to organize the trends seen across kinases and inhibitor dasses (see Fig. 2.2). In the Traxler model, five sites were proposed of which three (adenine, sugar and phosphate-binding sites) can be directly related to ATP and two additional lipophilic sites which lay outside of the region occupied by ATP. In the Bower model, an additional polar site on the surface of the protein was proposed. 

Jux A, Gleixner G, Boland W. Classification of terpenoids according to the methylerythritol phosphate or the mevalonate pathway with natural C/ C ratios dynamic allocation of resources in induced plants. Angew. Chem. Int. Ed. 2001 40 2091-2093. 

Mining is the process by which ores or related materials are extracted from the Earth. Ore is defined as a rock or mineral, generally metallic, which can be mined, processed, transported, and sold at a profit. Therefore, the classification of an Earth material as ore depends as much on economics and technology as geology. Non-metallic substances that are commonly mined but not considered to be ores include coal, phosphate, and sand and gravel. The term groundwater mining is sometimes... 

G6PD glucose 6 phosphate dehydrogenase ICD International Classification of Diseases... 

Figure 1. Index of refraction versus dispersion and optical classification of glasses shaded area indicates region of glass formation M. Plexiglas is a methyl methacrylate Lucite is an acrylic resin. BaF, barium flint BaK, Barium crown Balf, light barium flint BaSF, heavy barium flint BK, borosilicate crown F, flint FK, fluorcrown K, crown KF, crown flint LaF, lanthanum flint LaSF, heavy lanthanum flint LaK, lanthanum crown LF, light flint LLF, very light flint PK, phosphate crown PSK, heavy phosphate crown SF, heavy flint SK, heavy crown, SSK, very heavy crown, TiF, titanium flint.

Consult also, Tables I and III for classification of the types. Formation of a precipitate. Solubility in citric acid-monosodium phosphate at pH 2.5. Solubility in 13 7 (v/v) ethanol-water. 

A listing of the classification of acids and bases is given in Table 1.3. From this table it is apparent, for example, that Fe " (a hard acid) will tend to bond strongly with hard bases such as phosphate and carboxylate, but not with softer bases such as sulfide or aromatic amines. Fe ", a softer acid, bonds more strongly with these softer bases. 

The first aircraft hydraulic fluid was castor oil based. Modern aircraft now use one of two broad classifications of hydraulic fluid, hydrocarbon based or phosphate ester based. 

In the preoccupation to screen all the periodic classification of the elements, we have tested numerous metallic phosphates that we have arbitrarily classified as a function of the cation valence. As far as it was possible, we have limited the synthetic routes of catalysts to one or two to be able to compare their intrinsic activity. 

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