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Changes in the activity of adenine and guanine salvage in nucleotideand nucleic acid synthesis during the growth of Catharanthusroseus were investigated. Incorporation of [8-14C]adenine intoATP and ADP and that of [8-14C]guanine into GTP and GDP increasedmarkedly in the lag phase of cell growth and then sharply decreased.The incorporation into RNA from both precursors showed a similarpattern. The role of rapid purine salvage observed in the lagphase of cell growth is discussed. Catharanthus roseus, Madagascar periwinkle, suspension culture cells, purine salvage, adenine, guanine 相似文献
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