In this article we will discuss about the X-ray crystallographic studies of DNA. In 1920, the basic chemical composition of nucleic acid was elucidated through the efforts of P.A. Levene. In 1940, for the first time W.T. Astbury gave first three dimensional structure of DNA model studied through X-ray crystallography. He concluded that its flat nucleotides get stacked to form [...]
In this article we will discuss about the structure of RNA. The RNA is usually single stranded except some viruses such as TMV, yellow mosaic virus, influenza virus, foot and mouth disease virus, reovirus, wound tumour virus, etc. which have dsRNA. The single strand of the RNA is folded either at certain regions or entirely to form hairpin-shaped structure. In [...]
The upcoming discussion will update you about the difference between DNA and RNA. Difference # DNA: 1. DNA is originated from RNA. 2. DNA is the genetic material of almost all living organisms. 3. Except a few (e.g. Φ * 174), most of DNA viruses is double stranded. 4. Pentose Sugar is deoxyribose. 5. The bases are adenine, guanine, cytosine [...]