Phosphate group There are four bases: Adenine and Guanine (purines); Cytosine and Thymine (Pyrimidines). Purines have two carbon-nitrogen rings while pyrimidines have a single carbon-nitrogen ring.

Structure of purines Purine biosynthesis is complex. The purine skeleton is a 6-membered pyrimidine ring fused to a 5-membered imidazole ring (See Figure 1). Each ring contains two nitrogen (N ...

KELEMEN, S., DEGENS, E. Rapid Column Chromatography of Purine and Pyrimidine Bases on ‘Ectaola’ Cellulose at Room Temperature and Elevated Pressure. Nature 211, 857–859 (1966). https://doi ...

In nucleosides, purine or pyrimidine bases are connected to the C-1 position of the sugar through the nitrogen on the ring, forming various nucleosides and their derivatives. This is a valuable method ...

Nitrogen is a vital component of life and human culture. But today, the majority of the N atoms in synthetic N-containing compounds come from NH3, which is mass-produced using the Haber-Bosch method, ...

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