1.1.1.240 Purification and characterization of N-acetyl-D-hexosamine dehydrogenase from Pseudomonas sp. No. 53 Pseudomonas sp. 1.1.1.240 Purification and characterization of N-acetyl-D-hexosamine dehydrogenase from Pseudomonas sp. No. 53 Pseudomonas sp. No. 53