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Science 16 October 1970:
Vol. 170. no. 3955, pp. 328 - 330
DOI: 10.1126/science.170.3955.328
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Articles

Cytokinin Activity of Ureidopurine Derivatives Related to a Modified Nucleoside Found in Transfer RNA

William H. Dyson 1, C. M. Chen 1, Syed N. Alam 1, Ross H. Hall 1, C. I. Hong 2, and Girish B. Chheda 2

1 Department of Biochemistry, McMaster University, Hamilton, Ontario
2 Roswell Park Memorial Institute, Buffalo, New York

By use of a radioactive labeling technique N-(nebularin-6-ylcarbamoyl)threonine has been detected in plant transfer RNA. Derivatives of this nucleoside promote cell division of a cytokinin-requiring soya bean tissue.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)