Condroitin sulphate

Dermatan sulphate (condroitin sulphate B from pig skin). Purified by digestion with papain and hyaluronidase, and fractionation using aqueous EtOH. [Gifonelli and Roden Biochemical Prepreparations 12 1 1968]. 

In soils nearly 50% of the total sulphur is found in the hydroiodic acid reducible fraction , consisting of sulphate esters, which are probably in part polysaccharide sulphates (e.g. condroitin sulphate), keratin sulphates, choline sulphate, and arylsulphates (Zinder and Brock, 1978b). The heteropolysaccharide sulphates, which are also reported from msirine species (e.g. Torres-Pombo et al., 1969 Abdel-Fattah et al., 1973 Batey and Turvey, 1975), serve mainly as structural materials reaccessible to the marine sulphur cycle as SO ", depending on the ability of microorganisms, plants, and mammals to produce enzymes (sulphhydrolases) to hydrolyze these esters (Fitzgerald, 1978). 

Among the miscellaneous applications of ion-selective electrodes are the use of the Orion calcium electrode for studying calcium ion activity in connection with membrane alkalinisation in mitochondria [282] and on mitosis [283—285]. The electrode has also been used to show that protein polysaccharides of cartillage chelate calcium ions very effectively [286]. Electrode studies of calcium binding by chondroitin sulphate are said to be subject to interference by the condroitin sulphate anion [287]. 

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See also in sourсe #XX -- [ ]

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