作者: Lawrence M. Schwartz , Anita Myer , Lucy Kosz , Marcy Engelstein , Carolina Maier
DOI: 10.1016/0896-6273(90)90080-Y
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摘要: Ubiquitin, a highly conserved 76 amino acid protein, plays role in targeting intracellular proteins for degradation. Ubiquitin expression was examined during the developmentally programmed atrophy and degeneration of intersegmental muscles (ISMs) hawk-moth, Manduca sexta. A clone containing nine repeats ubiquitin coding sequence isolated from an ISM cDNA library used as probe to examine polyubiquitin development. When ISMs became committed degenerate, gene increased dramatically. Injection 20-hydroxyecdysone, which delays this system, prevented increase mRNA. The occurred without apparent activation cell's heat shock response. These data suggest that cell death.