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PubMed2006

Biodegradation of 8-anilino-1-naphthalenesulfonic acid by Pseudomonas aeruginosa.

Pseudomonas aeruginosa, isolated from soil near tannery effluent was able to degrade 8-anilino-1-naphthalenesulfonic acid (ANSA), a sulfonated aromatic amine. The organism degraded this amine up to a concentration of 1,200 mg l(-1) using glucose and ammonium nitrate as carbon and nitrogen sources respectively. The degradation started when the organism reached its late exponential growth phase. Salicylic acid and beta-ketoadipic acid were identified as intermediate compounds using HPLC and GC-MS and provide evidence for ortho pathway reactions. Further proof for the pathway is obtained from the dioxygenase activity of the strain growing exponentially in medium with ANSA and glucose.

Adipates↗
PubMed1992

Use of delta-(alpha-aminoadipoyl) chromogenic amides in screening for aminoadipoyl amidohydrolases.

The synthesis of delta-(alpha-aminoadipoyl) aromatic amides and their use in screening for enzymes able to cleave delta-(alpha-aminoadipoyl) residues off the synthetic amides and cephalosporin C are described. A number of commercially available proteases and peptidases were not active with delta-(alpha-aminoadipoyl) chromogenic amides. Also, most tested microbial strains known to produce acylases did not hydrolyze these compounds. Only one microbial strain, Xanthomonas maltophila, had an appreciable activity toward the racemic form of chromogenic substrates. Activity measured in crude extracts from Xanthomonas cells indicated that this bacterium produces predominantly L-specific aminoadipoyl amidohydrolase and gamma-glutamyl hydrolase. A low level of cephalosporin C and glutaryl-cephalosporin acylase activities was also found.

Adipates↗