Effects of Post-irradiation Incubation on the Fibroin Synthetic Activity of Silkgland Ribosomes | Zendy

Takaomi Kobayashi | Zendy; Kozo Matsumoto | Zendy; Giichi Yoshii | Zendy

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Effects of Post-irradiation Incubation on the Fibroin Synthetic Activity of Silkgland Ribosomes

Author(s) -

Takaomi Kobayashi,

Kozo Matsumoto,

Giichi Yoshii

Publication year - 1972

Publication title -

journal of radiation research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.643

H-Index - 60

eISSN - 1349-9157

pISSN - 0449-3060

DOI - 10.1269/jrr.13.214

Subject(s) - ribosome , incubation , irradiation , ribonuclease , ribosomal rna , incubation period , fibroin , biochemistry , chemistry , in vitro , microbiology and biotechnology , biology , biophysics , rna , materials science , physics , nuclear physics , silk , composite material , gene

Isolated silkgland ribosomes were irradiated with x rays from 570 to 4600 R, and their ability to synthesize fibroin in vitro was examined. A marked decrease in their activities was observed when ribosomes were incubated at 37 deg C following x irradiation. Per cent decrease in the ribosomal activity leveled off at 37 deg C after 30 min incubation. The extent of decrease was dependent on x-ray dose. Treatment of ribosomes with pancreatic ribonuclease showed a decrease in the ribosomal activity. These results suggest that a type of radiation damages on irradiated ribosomes is likely to be revealed during the post-irradiation incubation period through a possible interaction with ribonuclease either activated or released by x irradiations. (auth)

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