ISSN:
0894-3230
Keywords:
Organic Chemistry
;
Physical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Using semi-empirical self-consistent field molecular orbital (SCF-MO) quantum chemical calculations, structures of putative intermediates of the desaturation pathway for both cis- and trans- carotene biosynthesis have been optimized. It was observed that the cis isomers of the early biosynthetic intermediates are more stable than corresponding trans isomers. Both desaturation and cyclization steps confer increased stability on these carotenes. The results also argue for phytofluene, rather than the earlier suggested phytoene or ζ-carotene, as the energetically favored branch point for poly-cis-carotene biosynthesis.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/poc.610051202
