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Applied and Environmental Microbiology, November 2007, p. 7099-7102, Vol. 73, No. 21
0099-2240/07/$08.00+0     doi:10.1128/AEM.00777-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

6-Aminohexanoate Oligomer Hydrolases from the Alkalophilic Bacteria Agromyces sp. Strain KY5R and Kocuria sp. Strain KY2{triangledown}

Kengo Yasuhira, Yasuhito Tanaka, Hiroshi Shibata, Yasuyuki Kawashima, Akira Ohara, Dai-ichiro Kato, Masahiro Takeo, and Seiji Negoro*

Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, Himeji, Hyogo 671-2280, Japan

Received 7 April 2007/ Accepted 20 August 2007

Alkalophilic, nylon oligomer-degrading strains, Agromyces sp. and Kocuria sp., were isolated from the wastewater of a nylon-6 factory and from activated sludge from a sewage disposal plant. The 6-aminohexanoate oligomer hydrolases (NylC) from the alkalophilic strains had 95.8 to 98.6% similarity to the enzyme in neutrophilic Arthrobacter sp. but had superior thermostability, activity under alkaline conditions, and affinity for nylon-related substrates, which would be advantageous for biotechnological applications.

* Corresponding author. Mailing address: Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan. Phone and fax: 81-79-267-4891. E-mail: negoro{at}eng.u-hyogo.ac.jp

{triangledown} Published ahead of print on 7 September 2007.

Applied and Environmental Microbiology, November 2007, p. 7099-7102, Vol. 73, No. 21
0099-2240/07/$08.00+0     doi:10.1128/AEM.00777-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.





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