prosthetic group enzyme

Enzymes - Enzymes are the biocatalysts of life. They are defined as biocatalysts synthesized by living cells. They are simple or conjugate protein and specific in action. At present about 300 enzymes are recognized and classified into six classes by International Union..

A large number of chemical reactions will be taking place in a cell. The rate and efficiency with which these reactions go on in a cell, depend on a group of macromolecules called enzymes. Enzymes are thus, biological catalysts. Enzymes are synthesised by li..

Classification of Enzymes - Enzymes are generally classified on the basis of the type of reactions that they catalyse. 6 groups of enzymes can be recognised on this basis. The following table lists the 6 groups of enzymes along with exampl..

>o C. Enzyme activity decreases below and above this range of temperature. Each enzyme requires a specific pH for its activity. Enzyme activity decrease below and above this optimum pH. Enzymes generally work in groups in a cell. The product one ..

The remarkable specificity of enzymes comes from the ability of the enzymes to bring the substrates into a favorable orientation in the enzyme-substrate (ES) complexes such that the substrates are bound to specific regions of the enzymes. Each enzyme..

>RNA cannot undergo replication and have to be synthesised only from DNA. Enzymes are basically proteins that function as biological catalysts. Enzymes carry on their catalytic action by lowering the activation energy required for a reaction to proceed. Sometimes an enzymeh..

Conjugate proteins are those which contain a non-amino acid component in addition to the amino acids. This non-amino acid component is called the prosthetic group. For e.g., glycoprotein (with carbohydrate as the prosthetic group), phosphoprotein (with phosp..

. Copper is a cofactor of the enzyme cytochrome oxidase. Minerals take part in several biological processes. Iron serves as a prosthetic group for haemoglobin and is essential for the functioning of chlorophyll. Calcium plays a very important role in the clotting of bl..

Binding of insulin to the outer subunits of the receptor causes a conformational change in the membrane spanning -subunits, which is also an enzyme, a tyrosine kinase. The activated -subunits add phosphate groups of specific tyrosine residues located in cytoplasmic domain of th..

Three types of cells are found suspended in the plasma of blood. They are: erythrocytes (RBC), leukocytes (WBC) and thrombocytes (Platelets). Erythrocytes (red blood corpuscles) are spherical or oval cells that are responsible for the oxygen carrying capacity of blood. The RBC are characterized by ..