Genetics: Biosynthesis pathway of a new DNA nucleobase elucidated

DNA is composed of nucleobases represented by the letters A, T, G and C. They form the basis of the genetic code and are present in all living beings. But in a bacteriophage, another base, represented by the letter Z, exists. This exception, the only one observed to date, has long remained a mystery. Scientists have now elucidated the biosynthesis pathway of this base.

from Top Health News -- ScienceDaily https://ift.tt/2QcAThH