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Detailed biosynthetic pathway to decaprenoxanthin diglucoside in Corynebacterium glutamicum and identification of novel intermediates.

Authors :
Krubasik P
Takaichi S
Maoka T
Kobayashi M
Masamoto K
Sandmann G
Source :
Archives of microbiology [Arch Microbiol] 2001 Sep; Vol. 176 (3), pp. 217-23.
Publication Year :
2001

Abstract

Carotenogenic mutants of Corynebacterium glutamicum were analyzed for their carotenoid content. Mutant MV10 accumulated the same carotenoids as the wild-type, decaprenoxanthin, decaprenoxanthin monoglucoside, and (2R,6R,2'R,6'R)-decaprenoxanthin di-(beta-D)-glucoside, but in three-fold higher amounts. In addition, decaprenoxanthin diglucoside fatty acid esters and the intermediates nonaprene, 2-(3-methyl-2-butenyl)-epsilon,psi-carotene, and sarcinene, 2,2'-bis(3-methyl-2-butenyl)-epsilon,epsilon-carotene were identified as minor carotenoids. The pink mutants MV40 and MV60 synthesized only lycopene. From another pink mutant, MV70, novel C(50)-carotenoids were isolated. By NMR and mass spectroscopy, nonaflavuxanthin, 2-(4-hydroxy-3-methyl-2-butenyl)-1,16-didehydro-1,2-dihydro-psi,psi-carotene, and flavuxanthin, 2,2'-bis(4-hydroxy-3-methyl-2-butenyl)-1,16,1',16'-tetradehydro-1,2,1',2'-tetrahydro-psi,psi-carotene, were identified. The identification of these intermediates revealed the detailed pathway for the formation of decaprenoxanthin derivatives in Corynebacterium glutamicum.

Details

Language :
English
ISSN :
0302-8933
Volume :
176
Issue :
3
Database :
MEDLINE
Journal :
Archives of microbiology
Publication Type :
Academic Journal
Accession number :
11511870
Full Text :
https://doi.org/10.1007/s002030100315