Posttranscriptional Control of Nitrate Reductase of Cultured Tobacco Cells by Amino Acids | Zendy

Yair M. Heimer | Zendy; E. Riklis | Zendy

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Posttranscriptional Control of Nitrate Reductase of Cultured Tobacco Cells by Amino Acids

Author(s) -

Yair M. Heimer,

E. Riklis

Publication year - 1979

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.64.4.663

Subject(s) - nitrate reductase , amino acid , enzyme , limiting , biochemistry , nitrate , nitrogen assimilation , reductase , assimilation (phonology) , rna , chemistry , messenger rna , biology , gene , ecology , mechanical engineering , linguistics , philosophy , engineering

Using the inhibitor of RNA synthesis, 4,5',8-trimethylpsoralen plus near ultraviolet light, the half-life of the rate-limiting RNA species required for the induction of nitrate reductase in XD cells of tobacco was estimated to be 4 hours. Amino acids, the end product of nitrate assimilation, reduced the half-life to 1 hour. It is suggested that amino acids exert a posttranscriptional control on the enzyme level.

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