TY - JOUR
T1 - Comparison of Chloroflexus aurantiacus strain J-10-fl proteomes of cells grown chemoheterotrophically and photoheterotrophically
AU - Cao, Li
AU - Bryant, Donald A.
AU - Schepmoes, Athena A.
AU - Vogl, Kajetan
AU - Smith, Richard D.
AU - Lipton, Mary S.
AU - Callister, Stephen J.
N1 - Funding Information:
Acknowledgments The research described in this article was funded by the Genomic Science Program sponsored by the U. S. Department of Energy Office of Biological and Environmental Research (DOE/ BER) and performed in the Environmental Molecular Sciences Laboratory, a DOE/BER national scientific user facility located at Pacific Northwest National Laboratory (PNNL) in Richland, Washington. PNNL is a multi-program national laboratory operated by Battelle for the DOE under Contract DE-ACO5-76RLO 1830. D. A. B. additionally acknowledges support from DOE Office of Basic Energy Sciences (DE-FG02-94ER20137). The authors wish to acknowledge Dr. Yusuke Tsukatani for helpful discussion. Mass spectrometry data used in this study can be requested at http://omics.pnl.gov.
Funding Information:
This manuscript has been authored by Battelle Memorial Institute under Contract No. DE-AC05-76RL01830 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.
PY - 2012/2
Y1 - 2012/2
N2 - Chloroflexus aurantiacus J-10-fl is a thermophilic green bacterium, a filamentous anoxygenic phototroph, and the model organism of the phylum Chloroflexi. We applied high-throughput, liquid chromatography-mass spectrometry in a global quantitative proteomics investigation of C. aurantiacus cells grown under oxic (chemoorganohetero-trophically) and anoxic(photoorganoheterotrophically) redox states. Our global analysis identified 13,524 high-confidence peptides that matched to 1,286 annotated proteins, 242 of which were either uniquely identified or significantly increased in abundance under photoheterotrophic culture condition. Fifty-four of the 242 proteins are previously characterized photosynthesis-related proteins, including chlorosome proteins, proteins involved in the bacteriochlorophyll biosynthesis, 3-hydroxypropionate (3-OHP) CO 2 fixation pathway, and components of electron transport chains. The remaining 188 proteins have not previously been reported. Of these, five proteins were found to be encoded by genes from a novel operon and observed only in photoheterotrophically grown cells. These proteins candidates may prove useful in further deciphering the phototrophic physiology of C. aurantiacus and other filamentous anoxygenic phototrophs.
AB - Chloroflexus aurantiacus J-10-fl is a thermophilic green bacterium, a filamentous anoxygenic phototroph, and the model organism of the phylum Chloroflexi. We applied high-throughput, liquid chromatography-mass spectrometry in a global quantitative proteomics investigation of C. aurantiacus cells grown under oxic (chemoorganohetero-trophically) and anoxic(photoorganoheterotrophically) redox states. Our global analysis identified 13,524 high-confidence peptides that matched to 1,286 annotated proteins, 242 of which were either uniquely identified or significantly increased in abundance under photoheterotrophic culture condition. Fifty-four of the 242 proteins are previously characterized photosynthesis-related proteins, including chlorosome proteins, proteins involved in the bacteriochlorophyll biosynthesis, 3-hydroxypropionate (3-OHP) CO 2 fixation pathway, and components of electron transport chains. The remaining 188 proteins have not previously been reported. Of these, five proteins were found to be encoded by genes from a novel operon and observed only in photoheterotrophically grown cells. These proteins candidates may prove useful in further deciphering the phototrophic physiology of C. aurantiacus and other filamentous anoxygenic phototrophs.
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U2 - 10.1007/s11120-011-9711-8
DO - 10.1007/s11120-011-9711-8
M3 - Article
C2 - 22249883
AN - SCOPUS:84862820783
SN - 0166-8595
VL - 110
SP - 153
EP - 168
JO - Photosynthesis research
JF - Photosynthesis research
IS - 3
ER -