Pteridines in the milkweed bug,Oncopeltus fasciatus (Dallas): I. Identification and localization |
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| Affiliation: | 1. College of Plant Science and Technology, Huazhong Agricultural University, 430070, Wuhan, People’s Republic of China;2. College of Natural Resources and Life Science, Dong-A University, 604-714, Busan, Republic of Korea |
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| Abstract: | The milkweed bug, Oncopeltus fasciatus (Dallas), contains 3 pteridines, xanthopterin, isoxanthopterin, and 2-amino-4-hydroxypteridine. The 2-amino-4-hydroxypteridine is found only in the midgut; isoxanthopterin and bound xanthopterin are present in all body tissues and excrement throughout the life cycle. Xanthopterin may be freed by heat or acid or base treatment. Pteridines are present in members of 4 subfamilies of the Scutelleridae. |
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