In this article we will discuss about the process of biosynthesis of nucleic acids. Biosynthesis of Nucleosides-5'-Triphosphates: Among animals, some amino acids cannot be synthesized and must therefore be supplied through diet (essential amino acids). On the contrary, purine and pyrimidine nucleotides can be synthesized "de novo", from precursors like CO2, NH3, formiate, glycine etc., and this is true of [...]
In this article we will discuss about the process of biosynthesis of RNAs. The polymerization of ribonucleosides-5'-triphosphates to RNA is a process called transcription, because the genetic information carried by the DNA is transcribed into RNA. This transfer of information is based on the same principle as the duplication of DNA, i.e. the pairing of complementary bases (we will see [...]
In this article we will discuss about the polymers present in the cell wall of bacteria. Apart from murein, several other polymers are present in the cell wall of bacteria. In Gram- positive bacteria, the thick, rigid covering of murein is surrounded by polymers, like teichoic acids and teichuronic acid. Teichoic acids are hydrophilic linear negatively charged molecules and they [...]