Abstract-Fermentation products are indigenous to many civilizations, and they have been produced by industries since a long time. Saccharomyces cerevisiae S288C (commonly known as baker's yeast) is the strain mainly used in the Glucose based fermentation industries. We have seen the use of same yeast strain at different places with different Phenotypic Constraints. The way to improve the adaptability of considered strain for desired phenotypic conditions, using smart selection of genes through cybernetic modeling is illustrated. Phylogenetic homologues for all S. cerevisiae S288c Glucose Fermentation pathway genes were screened to search evolutionarily related functional domains in other yeast strains like Saccharomyces cerevisiae YJM789, Candida glabrata CBS138, Kluyveromyces lactis NRRL Y-1140, Ashbya gossypii ATCC10895 etc., which are adapted naturally in different set of environment. We observed that Saccharomyces cerevisiae YJM789, Candida glabrata CBS138, Ashbya gossypii ATCC10895, Kluyveromyces lactis NRRL Y-1140 possess highly conserved functional domains, which can be carefully selected based on usage. This study aims at designing an algorithm to select and incorporate evolutionary homologues for genes of a considered strain, which mostly show sub-optimal performance in the desired set of experimental constraints. Such a consideration of native microenvironment and evolutionary closeness in the selection of functional homologues of the entire genetic set can thus be significantly fruitful.
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