Arabinose is another non-glucose carbohydrate source, for which bacterial cells have genetic capabilities for utilizing it as an alternative source of carbon. For utilization of Arabinose several genes operate. Few genes are required for its transport into the cell. Another set of gene products is required for the conversion of Arabinose into Xylulose. Then another set of enzymes is required for converting Xylulose into Fructose1,6-di phosphate, which becomes the part of glycolytic pathway. Multiple gene metabolic pathway is regulated by a common protein complex; so it is called ‘Arabinose Regulon’.