Abstract
The utilization of some purines, pyrimidines, nucleosides, and nucleotides for biosynthesis of RNA and DNA bases by E. coli was investigated by the isotopic competition technique. Adenine, adenosine, and desoxyadenosine were found to be precursors of RNA and DNA adenine and guanine. Guanine, guanosine, and desoxyguanosine were precursors of RNA and DNA guanine but contributed only to a limited extent to the synthesis of adenine. Cytosine, cytidine, desoxycytidine, cytidylic acid, uracil, uridine, and uridylic acid were effective as precursors of RNA and DNA cytosine as well as of uracil and thymine. No incorporation of thymine or thymidine was detectable by the method.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
