Gene deletion and decay appear to have eliminated many important metabolic activities, including siderophore production, part of the oxidative and most of the microaerophilic and anaerobic respiratory chains, and numerous catabolic systems and their regulatory circuits.
A deleción e deterioración de xenes parece ter eliminado moitas actividades metabólicas importantes, incluíndo a produción de sideróforos, parte da cadea oxidativa e a maior parte das cadeas respiratorias anaerobias e microaerófilas, e numerosos sistemas catabólicos e os seus circuítos regulatorios.