NDLI: Biosynthesis of bacteriochlorophyll c derivatives possessing chlorine and bromine atoms at the terminus of esterifying chains in the green sulfur bacterium Chlorobaculum tepidum.

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Biosynthesis of bacteriochlorophyll c derivatives possessing chlorine and bromine atoms at the terminus of esterifying chains in the green sulfur bacterium Chlorobaculum tepidum.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Saga, Yoshitaka Hayashi, Keisuke Mizoguchi, Tadashi Tamiaki, Hitoshi
Description	Author Affiliation: Saga Y ( Department of Chemistry, Faculty of Science and Engineering, Kinki University, Higashi-Osaka, Osaka 577-8502, Japan. Electronic address: saga@chem.kindai.ac.jp.); Hayashi K ( Department of Chemistry, Faculty of Science and Engineering, Kinki University, Higashi-Osaka, Osaka 577-8502, Japan.); Mizoguchi T ( Graduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan.); Tamiaki H ( Graduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan.)
Abstract	The green sulfur photosynthetic bacterium Chlorobaculum tepidum newly produced BChl c derivatives possessing a chlorine or bromine atom at the terminus of the esterifying chain in the 17-propionate residue by cultivation with exogenous ω-halo-1-alkanols. The relative ratios of BChl c derivatives esterified with 8-chloro-1-octanol and 10-chloro-1-decanol were estimated to be 26.5% and 33.3% by cultivation with these ω-chloro-1-alkanols at the final concentrations of 300 and 150 µM, respectively. In contrast, smaller amounts of unnatural BChls c esterified with ω-bromo-1-alkanols were biosynthesized than those esterified with ω-chloro-1-alkanols: the ratios of BChl c derivatives esterified with 8-bromo-1-octanol and 10-bromo-1-decanol were 11.3% and 12.2% at the concentrations of 300 and 150 µM, respectively. These indicate that ω-chloro-1-alkanols can be incorporated into bacteriochlorophyllide c more than ω-bromo-1-alkanols in the BChl c biosynthetic pathway. The homolog compositions of the novel BChl c derivatives possessing a halogen atom were analogous to those of coexisting natural BChl c esterified with farnesol. These results demonstrate unique properties of BChl c synthase, BchK, which can utilize unnatural substrates containing halogen in the BChl c biosynthesis of Cba. tepidum.
File Format	HTM / HTML
ISSN	13891723
Issue Number	1
Volume Number	118
e-ISSN	13474421
Journal	Journal of Bioscience and Bioengineering
Language	English
Publisher	Elsevier
Publisher Date	2014-07-01
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Biomedical Engineering Discipline Microbiology Bacterial Proteins Chemistry Bacteriochlorophylls Biosynthesis Chlorobi Metabolism Bromine Analysis Chlorine Esterification Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Bioengineering Applied Microbiology and Biotechnology Biotechnology

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