BIOLOGIYA MORYA, 2014, Vol. 40, No. 1, pp. 57-62

Cystathionine β-synthase and cystathionine γ-lyase in tissues of the nemertean Cerebratulus marginatus Renier, 1804 (Nemertea)

© 2014 A. V. Chernyshev^{1, 2}, E. P. Kotsyuba¹

¹A.V. Zhirmunsky Institute of Marine Biology, Far East Branch, Russian Academy of Sciences, Vladivostok 690041;
²Far Eastern Federal University, Vladivostok 690600

E-mail:

Using immunohistochemistry, we have examined the distribution of the hydrogen sulfide (H₂S) synthesizing enzymes cystathionine β-synthase (CBS) and cystathionine γ-lyase (CSE) in tissues of the nemertean Cerebratulus marginatus Renier, 1804 (Heteronemertea: Lineidae). The expression of both CBS and CSE was found in the body wall and in the receptor cells of the canals of the cerebral organs; the expression of CBS, in the foregut and intestine; CSE, in the brain, lateral nerve cords, and cerebral organs. The peculiarities of distribution and the possible functional role of H₂S-synthesizing elements in nemerteans are discussed.

Key words: hydrogen sulfide, cystathionine β-synthase, cystathionine γ-lyase, nemerteans.