Modification of the esterifying farnesyl chain in light-harvesting bacteriochlorophylls in green sulfur photosynthetic bacteria by supplementation of 9-decyn-1-ol, 9-decen-1-ol, and decan-1-ol
作者： Yoshitaka Saga , Keisuke Hayashi , Keiya Hirota , Jiro Harada , Hitoshi Tamiaki
DOI: 10.1016/J.JPHOTOCHEM.2015.05.002
关键词: Chlorosome 、 Chemistry 、 Acetone 、 Organic chemistry 、 ATP synthase 、 Photosynthetic bacteria 、 Biosynthesis 、 Bacteriochlorophyll 、 Pigment 、 Sulfur
摘要: Abstract Green sulfur photosynthetic bacteria Chlorobaculum ( Cba .) tepidum and . limnaeum were cultivated with the supplementation of 9-decyn-1-ol, 9-decen-1-ol, decan-1-ol by two methods to biosynthesize unnatural chlorosomal bacteriochlorophyll (BChl) pigments possessing an (un)saturated bond at terminus esterifying chain. The acetone solutions exogenous alcohols every 24 h (denoted as Method A) successfully produced BChls c esterified in vivo ratios over total not so different from each other, indicating that terminal unsaturated moieties barely affected last reaction BChl biosynthesis catalyzed synthase. grown a liquid culture initially contained 9-decyn-1-ol 9-decen-1-ol B) also accumulated these alcohols; relative analogous those obtained A corresponding final concentrations. In contrast, did synthesize e three alcohols. incorporation bonds into biosynthetic will be useful structural probes for investigation pigment interactions biogenesis chlorosomes well scaffolds bioorthogonal modifications.
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