OCCURRENCE OF D-ALANINE IN THE EGGS AND THE DEVELOPING EMBRYO OF THE SEA-URCHIN PARACENTROTUS-LIVIDUS

被引：21

作者：

DANIELLO, A ^{[1
]}

NARDI, G ^{[1
]}

CIPOLLARO, M ^{[1
]}

PISCHETOLA, M ^{[1
]}

PADULA, L ^{[1
]}

机构：

[1] NAPLES UNIV, FAC SCI, DIPARTIMENTO GENET & BIOL MOLEC, I-80138 NAPLES, ITALY

来源：

COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY | 1990年 / 97卷 / 02期

关键词：

D O I：

10.1016/0305-0491(90)90283-Y

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

1. 1. d-Alanine has been found in appreciable amounts in the eggs and embryos of the sea urchin Paracentrotus lividus. 2. 2. The content of d-alanine, expressed as pmol/egg or embryo, is 1.32 in the egg, 0.81 in the blastula, 0.54 in the gastrula and 0.60 in the pluteus. 3. 3. The percentage of d-alanine with respect to the total alanine (d + l) decreases during embryonic development. 4. 4. d-Amino acid oxidase, d-alanine transaminase and d-alanine racemase activities were found neither in eggs nor in embryos. 5. 5. Therefore, it does not appear likely that d-alanine is subject to oxidative metabolism. 6. 6. The decrease in this d-amino acid during development may be due to its utilization in the synthesis of a more complex molecule. © 1990.

引用

页码：291 / 294

页数：4

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