BIOLOGIYA MORYA, 2015, Vol. 41, No. 1, pp. 46-54 |
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Phosphatases of echinoderms and bivalve mollusks of the Japan and Okhotsk seas G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok 690022 E-mail: For the first time, 35 species of the Far Eastern marine invertebrates have been studied as potential sources of phosphatases. The enzymatic activity of acid (ACP) and alkaline (ALP) phosphatases in the gonads and digestive organs has been investigated in seven species of mollusks and 28 species of echinoderms. Significant variability of the enzymatic activity has been revealed within different groups of the organisms studied. It was shown that the activity of ACPs in the bodies of all the studied animals was higher than that of ALPs. For the first time, an attempt was made to search for the cysteine-containing and salt resistant ALPs in marine invertebrates. The ALPs retaining their activity in seawater were found in the gonads and digestive organs of sea urchins, as well as in the digestive organs of the starfish Henricia sp. The presence of cysteine ALPs has been detected in the gonads of four sea urchin species and the starfish Ceramaster patagonicus. Among the studied echinoderms, the cysteine-containing and salt resistant ALPs have been found only in mature oocytes and gonads of sea urchins; this is probably related to the peculiarities of the oogenesis process in sea urchins. Key words: acid and alkaline phosphatases, echinoderms, mollusks, eggs and gonads of sea urchins, salt resistant. |
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