The Isolation in Crystalline Form and Characterization of the Two Isomeric Cytidylic Acids Derived from Yeast Nucleic Acid¹

Identification of the Purine Nucleotides a and b as the 2'- and 3'-Phosphoribosides, Respectively1

“…Although not all of these observations were made on each pair of nucleotides, the early assumption, based on ion-exchange behavior, that all a isomers were derivatives of one ribose phosphate structure and all b's of the other was strengthened by the derivation of uridylic acid b from cytidylic acid 18 and by the similarities in the susceptibilities of all a's and all b's to a -specific phosphatase.193…”

The biosynthesis of pyrimidines by mutants of Aerobacter aerogenes

“…Loring and co-workers (Loring and Luthy, 1951;Loring, et > 1952aLoring, et > , 1952b to gluco8e-l-P04.…”