In this article we will discuss about the structure and properties of hemoglobins. Structure of Hemoglobins: As indicated by their name, hemoglobins consist of a prosthetic group; the heme (4%) and a protein part: the globin (96%). A. Heme: This is the prosthetic group common to various hemoglobins (while globin varies in different hemoglobins). It contains one molecule of protoporphyrin [...]
In this article we will discuss about the structure of enzymes. This will also help you to draw the structure and diagram of enzymes. Enzymes are proteins, having primary, secondary, tertiary and in certain cases, even quaternary structures. Sometimes, this protein part (or apoenzyme) is not sufficient for catalytic action which then requires the presence of a co-factor. I. Polypeptide [...]
In this article we will discuss about the theta structure of DNA, explained with the help of suitable diagrams. It is a structure formed in replication of circular DNA. Since this structure resembles the Greek letter θ it is known as the theta structure. Semiconservative mode of DNA replication in bacterial chromosome begins at the origin of replication called ori [...]