enzyme activity

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..

Enzymes in general exhibit the following properties Enzymes are basically proteins. They are globular proteins with a very huge molecular weight. For example, the molecular weight of pyruvic dehydrogenase is 4,600,000! Enzymes can only accelerate a chemical reaction. h..

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..

Any chemical reaction requires a certain amount of energy to get initiated. This is called activation energy. Most of the molecules in a substrate have average kinetic energy, some have high energy and some have low energy. Under normal conditions of temperature only molecules with higher..

Protein synthesis requires amino acids, DNA, RNAs, ribosomes and enzymes, enzyme activators and ATP molecul..

Genes do not operate to produce enzymes all the time. Each gene is normally more or less repressed (inactive); but, when a particular enzyme is needed, the relevant gene becomes active to bring about the production of that enzyme. A totally activeh..

As a result of -subunit activity, a transducer G protein activates enzyme phosphodiesterase. This enzyme makes phosphatidylinositol 4,5-biphosphate (PIP 2 ) into a pair of mediators inositoltriphosphate (IP 3 ) and diacylglycerol (DG). In turn, IP 3 , which ..

and minerals are responsible for regulating and coordinating the various activities of an organism along with enzymes (proteins..

Introduction - Genes do not operate to produce enzymes all the time. Each gene is normally more or less repressed (inactive); but, when a particular enzyme is needed, the relevant gene becomes active to bring about the production of that enzyme. A totally ..

All the genes do not play the same role, nor are all the genes active all the time. With regard to their role and activity, the genes are of two different types- Those genes are constantly transcribed and expressed in the cells because the products they code for are constantly n..