What are metabolic networks - What are metabolic networks...

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What are metabolic networks? The availability of the complete genomes allow many new types of experiments and analysis. The new approaches and questions that the genomes make possible are usually referred to as functional genomics . The task is to define the function of a gene (or its protein) in the life processes of the organism, where function refers to the role it plays in a larger context. But what are these life processes? The most obvious example is the metabolism of an organism , the basic chemical system that generates essential components such as amino acids, sugars and lipids, and the energy required to synthesize them and to use them in creating proteins and cellular structures. This system of connected chemical reactions is a metabolic network . Below is an example of such a network. This is the subsystem for synthesis of the amino-acids valine, leucine and isoleucine . This image was taken from the KEGG database . In the original web page , this image is clickable, so that one may navigate to other, connected metabolic subsystems. The green boxes indicate enzymes which have been identified in the organism, in this case Escherichia coli .
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