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Protein molecular evolution control

One of the obvious goals in the study of hemoproteins is an understanding of the mechanisms by which the physical and chemical properties of the heme group are modulated by the protein environment. The primary control of heme reactivity clearly is exercised in the selection of axial ligand(s) through molecular evolution. However, powerful secondary control mechanisms also exist. As the... [Pg.235]

Chemiluminescence has been studied extensively (2) for several reasons (/) chemiexcitation relates to fundamental molecular interactions and transformations and its study provides access to basic elements of reaction mechanisms and molecular properties (2) efficient chemiluminescence can provide an emergency or portable light source (J) chemiluminescence provides means to detect and measure trace elements and pollutants for environmental control, or clinically important substances (eg, metaboHtes, specific proteins, cancer markers, hormones, DNA) and (4) classification of the hioluminescent relationship between different organisms defines their biological relationship and pattern of evolution. [Pg.262]

Molecular complexation is a precondition for receptor functions such as substrate selection, substrate transportation, isomeric differentiation, and stereoselective catalysis. Although the investigation of such functions with synthetically derived compounds is a relatively new development in chemistry, they are well known and extensively studied functions in the biological domain. Evolution, gene expression, cell division, DNA replication, protein synthesis, immunological response, hormonal control, ion transportation, and enzymic catalysis are only some of the many examples where molecular complexation is a prerequisite for observing a biological process. [Pg.208]

The hemoglobin family of macromolecules exhibits virtually all the important features of protein structure, function, and evolution, principles of protein folding, subunit movement and allosteric control in regulating activity, effects of point mutations on molecular behavior, and gene structure and genetic control. [Pg.370]


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See also in sourсe #XX -- [ Pg.116 ]




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