Effect of gamma radiation on acceptor activity of phenylalanyl-tRNA and phenylalanyl-tRNA synthetases of cotton seeds
Journal Article
·
· Radiobiology (USSR) (Engl. Transl.); (United States)
OSTI ID:7316473
A study was made of changes in activity of phenylalanyl-tRNA synthetases in the reaction of linkage of /sup 14/C-phenylalanyl with tRNA, acceptor activity of the phenylalanyl-tRNA proper and substrate specificity of phenylalanyl tRNA synthetases in 2-day seedlings of cotton developing from seeds exposed to 6, 25 and 50 kR radiation. It was shown that phenylalanyl-tRNA and synthetase thereof, as well as isoacceptor tRNA differ in radiosensitivity. The activity of the enzyme is depressed to a greater extent than the corresponding tRNA. A study of substrate specificity of each fraction revealed that enzyme E/sub 1/ acylates isoacceptor phenylalnyl-tRNA I and II, and E/sub 2/, the isoacceptor III form.
- Research Organization:
- All-Union Scientific Research Inst., Tashkent
- OSTI ID:
- 7316473
- Journal Information:
- Radiobiology (USSR) (Engl. Transl.); (United States), Journal Name: Radiobiology (USSR) (Engl. Transl.); (United States) Vol. 17:1; ISSN RADBA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560141* -- Radiation Effects on Plants-- Basic Studies-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOCHEMISTRY
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
CARBON 14
CARBON ISOTOPES
CHEMISTRY
COTTON
DOSE-RESPONSE RELATIONSHIPS
ELECTROMAGNETIC RADIATION
ENZYMES
EVEN-EVEN NUCLEI
GAMMA RADIATION
IONIZING RADIATIONS
ISOTOPES
LIGASES
LIGHT NUCLEI
METABOLISM
NUCLEI
NUCLEIC ACIDS
ORGANIC COMPOUNDS
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
RADIOSENSITIVITY
RNA
SEEDS
YEARS LIVING RADIOISOTOPES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOCHEMISTRY
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
CARBON 14
CARBON ISOTOPES
CHEMISTRY
COTTON
DOSE-RESPONSE RELATIONSHIPS
ELECTROMAGNETIC RADIATION
ENZYMES
EVEN-EVEN NUCLEI
GAMMA RADIATION
IONIZING RADIATIONS
ISOTOPES
LIGASES
LIGHT NUCLEI
METABOLISM
NUCLEI
NUCLEIC ACIDS
ORGANIC COMPOUNDS
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
RADIOSENSITIVITY
RNA
SEEDS
YEARS LIVING RADIOISOTOPES