omminn.
/ˈɒmɪn/, U.S. /ˈɑm(ə)n/ Biochemistry.
Any of the group of sulphur-containing ommochromes characterized by stronger colours, greater stability to alkalis, and higher molecular weights than ommatins.
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the world > life > biology > substance > pigment > [noun] > human or animal pigments > red or brown
porphobilin1939
ommatin1940
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ommochrome1945
1940 Biol. Abstr. 14 1238/1 The 2 eye pigments [of Ephestia] are typical of those found among insects. The dark red or brown ommines occur in Lepidoptera, Hymenoptera, Coleoptera, Hemiptera Heteroptera, and in the nematocerous Diptera. The more weakly colored ommatines are found in the cyclorrhaphous Diptera, Odonata, and Orthoptera.
1964 T. H. Goldsmith in M. Rockstein Physiol. Insecta I. x. 425 The principal ommin is widely distributed in arthropods and cephalopods.
1975 D. G. Cochran in D. J. Candy & B. A. Kilby Insect Biochem. iii. 237 Storage of large quantities of 3-hydroxykynurenine occurs in vesicles or dilations of the endoplasmic reticulum of tubule cells [of Drosophila], and, at least in certain mutants, it is converted into ommatins and ommins.
1999 Jrnl. Compar. Physiol. B. 169 157 A screening pigment (ommochrome) with maximum at 525 nm was..probably related to the group of ommines.
This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).
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