The enzymes from members of the Rhizobiaceae family (such as Agrobacterium tumefaciens) act on disaccharides that contain a glucose moiety at the non-reducing end, such as sucrose, trehalose, leucrose, palatinose, trehalulose, and maltitol, forming the respective 3'-keto derivatives. cf. EC 126.96.36.199, glucoside 3-dehydrogenase (cytochrome c).
Ampomah OY, Avetisyan A, Hansen E, Svenson J, Huser T, Jensen JB, Bhuvaneswari TV.
The thuEFGKAB operon of rhizobia and agrobacterium tumefaciens codes for transport of trehalose, maltitol, and isomers of sucrose and their assimilation through the formation of their 3-keto derivatives.