NEL, Activities in the Early and Late Development of the Chick Embryo

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NeuroendocrinologyÝLetters ISSNÝ0172ñ780X CopyrightÝ©Ý1998 NeuroendocrinologyÝLetters
Contents Vol. 18-21	NEL VOL. 19 No. 1 ORIGINAL ARTICLE	1998; 19:39-42
Activities in the Early and Late Development of the Chick Embryo by Auxiliadora Espinar, Juan M. Guerrero & Carmen Osuna Abstract: In this paper, we studied the characteristics of N-acetyltransferase (NAT) in the retina of chick embryos on the day 8 and 18 of development. Biochemical properties of the enzyme on day 8 are similar to those of the enzyme on day 18. Thus, dependence on protein concentration, pH, temperature, and Km exhibited similar values. The only difference found was the regulation by lighting conditions. While retinal NAT on day 8 is not affected by light exposure, the enzyme on day 18 is significantly depressed by light.
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NeuroendocrinologyÝLetters ISSNÝ0172ñ780X CopyrightÝ©Ý1998 NeuroendocrinologyÝLetters