Fructokinases from Developing Maize Kernels Differ in Their Specificity for Nucleoside Triphosphates | Zendy

Douglas C. Doehlert | Zendy

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Fructokinases from Developing Maize Kernels Differ in Their Specificity for Nucleoside Triphosphates

Author(s) -

Douglas C. Doehlert

Publication year - 1990

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.93.1.353

Subject(s) - fructokinase , nucleoside triphosphate , gtp' , nucleoside , dithiothreitol , zea mays , nucleotide , biochemistry , phosphotransferases , chemistry , enzyme , biology , agronomy , gene

A new form of fructokinase has been identified from developing maize (Zea mays L.) kernels that utilizes CTP, UTP, and GTP from four to eight times more effectively than ATP at nonlimiting concentrations. Ten millimolar dithiothreitol was necessary to stabilize activity. A second form of fructokinase was nonspecific for nucleoside triphosphate whereas a third form was fairly specific for ATP.

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