A novel bacterial strain producing D-aminoacylase was isolated from organic waste and identified as Stenotrophomonas maltophilia ITV-0595. The isolation was performed using N-acetyl-D-phenylglycine (NAcDPG) as the sole source of C and N. The optimum pH for enzyme expression was 8 at 37°C. Using N-Ac-DPG concentrations from 0.5 up to 3% w/v, it was observed that at the 1% level, the microorganism showed acceptable responses in both enzyme activities and cell growth. From the different tested compounds N-acetyl-D-methionine (1%) was the best enzyme inducer (Sp. act. = 4.14 U mg−1 protein, Vol. act. = 0.17 U ml−1) and the only one that increased cell growth.
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Received 13 June 1997/ Accepted in revised form 29 October 1998
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Muñiz-Lozano, F., Domιnguez-Sánchez, G., Dιaz-Viveros, Y. et al. D-Aminoacylase from a novel producer: Stenotrophomonas maltophilia ITV-0595. J Ind Microbiol Biotech 21, 296–299 (1998). https://doi.org/10.1038/sj.jim.2900589
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DOI: https://doi.org/10.1038/sj.jim.2900589