In this article we will discuss about the structure of RNA. RNA is a long un-branched polynucleotide chain chemically similar to DNA except for two major differences. The sugar in DNA is a deoxyribose, in RNA a ribose. Out of the 4 nucleotides, three (G, C and A) are identical in DNA and RNA. The fourth is thymine in DNA, [...]
In this article we will discuss about the introduction and stability of mRNA. Introduction to Messenger RNA (mRNA): The existence of messenger RNA (mRNA) playing the intermediate role of RNA in protein synthesis was postulated by Jacob and Monod in 1961. Before that RNA in ribosomes was thought to perform the function of mRNA. The prevailing notion was, one gene [...]
There are many types of RNAs, but three types of it are described here: 1. Ribosomal RNA (rRNA) 2. Messenger RNA (mRNA) 3. Transfer RNA (tRNA). Type # 1. The Ribosomal RNA (rRNA): The non-genetic RNAs are synthesized on the DNA template and are present in the nucleolus and cytoplasm. Therefore, the base sequences of rRNA and part of DNA [...]