Reduced level of secretion and absence of subunit combination for the fibroin synthesized by a mutant silkworm, Nd(2).

@article{Takei1984ReducedLO,
  title={Reduced level of secretion and absence of subunit combination for the fibroin synthesized by a mutant silkworm, Nd(2).},
  author={Fusaho Takei and Fumitaka Oyama and Ken-ichi Kimura and Akio Hyodo and Shigeki Mizuno and Kensuke Shimura},
  journal={The Journal of cell biology},
  year={1984},
  volume={99 6},
  pages={
          2005-10
        }
}
Fibroin is normally composed of one H chain (350 kd) and one L chain (25 kd) which are connected by disulfide bond(s). However, the small amount of fibroin secreted into the lumen of the posterior silk gland of the Nd(2) (naked pupa) mutant does not contain L chain, although L chain mRNA is present and L chain is synthesized in the posterior silk gland cells of the mutant. In a hybrid silkworm, Nd(2)/Tamanashikasuri, where Tamanashikasuri is a normal producer of fibroin, L chain from the two… CONTINUE READING

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