In this article we will discuss about the various structures of proteins. This will also help you to draw the structure and diagram of proteins. Proteins consist of long polypeptide chains and we know how to determine the sequence of the amino acids of these chains. This constitutes the primary structure of proteins. But in reality, each protein has a [...]
As indicated by their name, these are coloured proteins, their prosthetic group often contains a metal element (Fe, Cu, Mg). These compounds are generally classified on the basis of their prosthetic group having, or not having, the tetrapyrrol structure called porphyrin and according to their respiratory or non-respiratory physiological role. 1. Porphyrin Chromoproteins: A. Respiratory Pigments: They all contain iron. [...]
In this article we will discuss about the primary structure of peptides and proteins. Peptides and proteins consist of chains of amino acids linked by peptide bonds. We observe a structure analogy with the biuret molecule, formed by the condensation of 2 urea molecules (as indicated by its name) with elimination of one molecule of NH3(H2N—CO — NH-CO —NH2) and [...]