Vis enkel innførsel

dc.contributor.authorNærdal, Ingemar
dc.contributor.authorNetzer, Roman
dc.contributor.authorIrla, Marta
dc.contributor.authorKrog, Anne
dc.contributor.authorHeggset, Tonje Marita Bjerkan
dc.contributor.authorWendisch, Volker F.
dc.contributor.authorBrautaset, Trygve
dc.date.accessioned2017-12-21T14:39:36Z
dc.date.available2017-12-21T14:39:36Z
dc.date.created2017-03-16T13:27:48Z
dc.date.issued2017
dc.identifier.citationJournal of Biotechnology. 2017, 244 25-33.nb_NO
dc.identifier.issn0168-1656
dc.identifier.urihttp://hdl.handle.net/11250/2473593
dc.description.abstractBacillus methanolicus is a methylotrophic bacterium with an increasing interest in academic research and for biotechnological applications. This bacterium was previously applied for methanol-based production of l-glutamate, l-lysine and the five-carbon diamine cadaverine by wild type, classical mutant and recombinant strains. The genomes of two different l-lysine secreting B. methanolicus classical mutant strains, NOA2#13A52-8A66 and M168-20, were sequenced. We focused on mutational mapping in genes present in l-lysine and other relevant amino acid biosynthetic pathways, as well as in the primary cell metabolism important for precursor supply. In addition to mutations in the aspartate pathway genes dapG, lysA and hom-1, new mutational target genes like alr, proA, proB1, leuC, odhA and pdhD were identified. Surprisingly, no mutations were found in the putative l-lysine transporter gene lysEMGA3. Inspection of the wild type B. methanolicus strain PB1 genome sequence identified two homologous putative l-lysine transporter genes, lysEPB1 and lysE2PB1. The biological role of these putative l-lysine transporter genes, together with the heterologous l-lysine exporter gene lysECg from Corynebacterium glutamicum, were therefore investigated. Our results demonstrated that the titer of secreted l-lysine in B. methanolicus was significantly increased by overexpression of lysECg while overexpression of lysEMGA3, lysEPB1 and lysE2PB1 had no measurable effect.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.titleL-lysine production by Bacillus methanolicus: Genome-based mutational analysis and L-lysine secretion engineeringnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber25-33nb_NO
dc.source.volume244nb_NO
dc.source.journalJournal of Biotechnologynb_NO
dc.identifier.doi10.1016/j.jbiotec.2017.02.001
dc.identifier.cristin1458766
dc.description.localcodeThis article will not be available due to copyright restrictions (c) 2017 by Elseviernb_NO
cristin.unitcode194,66,15,0
cristin.unitnameInstitutt for bioteknologi
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel