In this article we will discuss about: 1. Meaning of Genetic Code 2. Patterns to Genetic Code 3. Properties. Meaning of Genetic Code: It has became obvious that nucleic acids are the genetic material. The nucleic acids being polynucleotide, function to store genetic information's and to replicate. The genetic information flow from polynucleotide to polypeptide. It is surprising to note [...]
In this article we will discuss about the processing of pre-tRNA in E.coli and yeast. In prokaryotes, there are many operons (e.g. 7 genes in E. coli) which are separated by spacer sequences. Mature tRNA molecules are generated by processing longer pre-tRNA transcripts. Through a specific step, RNases D, E, F and P generate these mature tRNA molecules by exo-and [...]
In this article we will discuss about the processing of mRNA in prokaryotes and eukaryotes. In prokaryotes, there is a little or no processing of mRNA transcripts. Prokaryotic mRNA is degraded very rapidly from 5' end. Therefore, to rescue from degradation it is translated before being finally transcribed. Ribosomes assemble on unfinished mRNA and first cistron (protein coding region) can [...]