Biochemistry

What are allosteric enzymes and their function?

allosteric enzymes and its regulation

A Modulator is a metabolite that, when bound to the allosteric site of an enzyme, alter its kinetic characteristics. The modulators of allosteric enzymes may be either stimulatory or inhibitory. Many enzymes do not demonstrate hyperbolic saturation kinetics or typical Michaelis-Menten kinetics. Graphs of initial velocity vs. substrate demonstrate the …

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Enzyme Kinetics: Kinetic Study of Enzymatic Reactions

enzyme kinetic studies

Enzyme kinetics is the study of the chemical reactions that are catalyzed by enzymes. In enzyme kinetics, the reaction rate is measured and the effects of varying the conditions of the reaction are investigated. Studying an enzyme’s kinetics in this way can reveal the catalytic mechanism of this enzyme, its …

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What is Enzyme Catalysis ?

What is Enzyme Catalysis ?

What is an enzyme? Enzymes are organic molecules, pretentious in nature that are specialized to catalyze biological reactions. Here these can be termed as “Biological Catalysts” (or) “Biocatalysts” (or) “Middle man of Nature”. What is an Enzyme? What is the meaning? The name ‘enzyme‘ (enG=in; zymeG=Yeast) literal means “in yeast“. …

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Biochemical Properties and Mechanism of ATP

biochemical properties of ATP

ATP contains two phosphoanhydride bonds (connecting the 3 phosphates together) and one phosphodiester bond (connecting a phosphate to the ribose ring). The pKa’s for the reactions H+ ATP3- —> ATP4- + H+ and HADP2- —> ADP3- + H+ are about 7.0. So the overall charges of ATP and ADP at …

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Nucleic Acids : Basics and Types

Nucleic Acids Structures

Nucleic acids are polymers composed of monomer units known as nucleotides. There are very few different types of nucleotides. The main functions of nucleotides are information storage (DNA), protein synthesis (RNA), and energy transfers (ATP and NAD). Nucleotides, shown in Figure 1, consist of sugar, a nitrogenous base, and phosphate. …

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Proteins : Basic and Structural organization

AMINO ACIDS

Proteins are very important in biological systems as control and structural elements. Control functions of proteins are carried out by enzymes and proteinaceous hormones. Enzymes are chemicals that act as organic catalysts (a catalyst is a chemical that promotes but is not changed by a chemical reaction). Proteins Basic units …

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