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SEIJI KAMIJO YUTAKA KAWAGUCHI HIROSHI FUJII BUNGO SAKAGUCHI HIROSHI DOIRA SATORU KUHARA YOICHI ASO KATSUMI KOGA KATSUYA HAYASHI KUNITADA SHIMOTOHNO 《Development, growth & differentiation》1978,20(4):283-289
The mucous glands of Bombyx pupae secrete glue proteins which attach deposited eggs to the mounting sheet. A mutant of a dominant gene, named no glue (Ng) , produces nonadhesive eggs which have a low capacity for glue-protein synthesis. In the present study it was shown that the mucous glands of Ng silkworms showed rapid degradation of mRNA as well as rRNA during development; this may cause the low capacity for glue-protein synthesis in the mutant organ. In contrast, the mucous glands of normal silkworms showed a significant increase in content of RNA's until the maximum rate of glue-protein synthesis was achieved. The degradation of RNA in the Ng mucous gland was inhibited by actinomycin D injected into the body fluid. Thus it is supposed that the Ng gene codes for a presumptive controller RNA, which would be the mediator of RNA instability in the mucous glands of Ng pupae. 相似文献
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