Nucleic acid facts
Swedish biochemist, Friedrich Mischer, 1869, isolated a chemical substance from the nucleus of pus cells that had a high phosphorus content and no sulfur at all. Since proteins must contain sulfur and not phosphorus, this substance cannot be a protein. Friedrich Mascher named this substance nuclein because of its origin from the nucleus. On the basis of acidic nature, Altmann (Altmann, 1989) called nucleic acids as nucleic acids. Shortly after, Kossel discovered the chemical constituents of nucleic acids in 1893. For this, Kossel received the Nobel Prize in 1910.
Types of nucleic acid
There are two types of nucleic acids –
Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Griffith demonstrated in 1920 that DNA is genetic material.