| 单词 |
ommochrome |
| 释义 |
ommochrome Biochem.|ˈɒməkrəʊm|
[ad. G. ommochrom (E. Becker 1942, in Zeitschr. f. indukt. Abstammungs- und Vererbungslehre LXXX. 179), f. Gr. ὄµµ-α eye + χρῶµ-α colour: see -o.]
Any of a group of insect pigments derived by condensation reactions from kynurenine and giving yellow, red, and brown body colours and commonly also found in the accessory cells of the eyes of insects.
1945Biol. Abstr. XIX. 450/1 The distribution of this new group of pigments, the ommochromes, among arthropods has been examined. 1965B. E. Freeman tr. Vandel's Biospeleol. xxv. 405 In the arthropods, melanines are replaced by ommochromes (ommines and ommatines). 1965V. B. Wigglesworth Princ. Insect Physiol. (ed. 6) xiii. 556 The ommochromes fall into two groups: the non-dialysable ‘ommines’, with large molecules, and the dialysable ‘ommatines’ with small molecules. 1970Nature 26 Dec. 1336/2 The integumental pigments of the isopod Crustacea are ommochromes. 1974Ibid. 30 Aug. 799/2 An early effect of ecdysoids at metamorphosis in some caterpillars is conversion of tryptophane into red ommochrome pigments. |
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