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Plant defence-inducing N-acylglutamines from insect guts: structural diversity and microbe-assisted biosynthesis

Plant defence-inducing N-acylglutamines from insect guts: structural diversity and microbe-assisted biosynthesis

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PING, Liyan, Dieter SPITELLER, Wilhelm BOLAND, 2003. Plant defence-inducing N-acylglutamines from insect guts: structural diversity and microbe-assisted biosynthesis. BCPC. Glasgow, Scotland, UK, 10. Nov 2003 - 12. Nov 2003. In: THE BRITISH CROP PROTECTION COUNCIL, , ed.. Crop Science & Technology 2003 : the BCPC international congress ; congress proceedings ; proceedings of an international congress held at the SECC, Glasgow, Scotland, UK, 10 - 12 November. BCPC. Glasgow, Scotland, UK, 10. Nov 2003 - 12. Nov 2003. Alton:Hampshire British Crop Protection Council, pp. 1211-1216. ISBN 1-901396-63-0

@inproceedings{Ping2003Plant-16103, title={Plant defence-inducing N-acylglutamines from insect guts: structural diversity and microbe-assisted biosynthesis}, year={2003}, isbn={1-901396-63-0}, address={Alton}, publisher={Hampshire British Crop Protection Council}, booktitle={Crop Science & Technology 2003 : the BCPC international congress ; congress proceedings ; proceedings of an international congress held at the SECC, Glasgow, Scotland, UK, 10 - 12 November}, pages={1211--1216}, editor={The British Crop Protection Council}, author={Ping, Liyan and Spiteller, Dieter and Boland, Wilhelm} }

Boland, Wilhelm 2011-09-29T07:25:53Z Spiteller, Dieter Ping, Liyan eng Boland, Wilhelm 2003 deposit-license Plant defence-inducing N-acylglutamines from insect guts: structural diversity and microbe-assisted biosynthesis Publ. in: Crop Science & Technology 2003 : the BCPC international congress ; congress proceedings ; proceedings of an international congress held at the SECC, Glasgow, Scotland, UK, 10-12 November / The British Crop Protection Council. Alton, Hampshire : British Crop Protection Council, 2003. pp. 1211-1216 Spiteller, Dieter N-Acylglutamines are ubiquitously present in the regurgitants of herbivorous insects. The compounds comprise a larger family containing fatty acids of different degrees of unsaturation and chain length. Further modifications occur in the fatty acid moiety by oxidative transformations to secondary alcohols and epoxides. By hydrolysis (epoxide), acylation or phosphorylation of the alcohols the diversity of the compounds is further increased. Screening of cultivable gut bacteria from several Lepidopterans revealed that many of the commensal microorganisms are principally able to synthesize the N-acyglutamines. From Microbacterium arborescens the first pure N-acyl synthase was isolated and characterized as an homooligomeric enzyme with a protomer size of 17.2 kDa. The enzyme displays a pH optimum at pH8 and second plateau of even higher activity between pH 9-12 corresponding to the strongly alkaline conditions in the insect gut. The enzyme catalyses amide formation between a wide range of free fatty acid and most proteinogenic amino acids. Preceeding activation of the acyl moiety is not required. Ping, Liyan 2011-09-29T07:25:53Z

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