scholarly journals New insight into the photoheterotrophic growth of the isocytrate lyase-lacking purple bacterium Rhodospirillum rubrum on acetate

Microbiology ◽  
2015 ◽  
Vol 161 (5) ◽  
pp. 1061-1072 ◽  
Author(s):  
B. Leroy ◽  
Q. De Meur ◽  
C. Moulin ◽  
G. Wegria ◽  
R. Wattiez
Keyword(s):  
Rhodospirillum Rubrum ◽  
Purple Bacterium ◽  
Insight Into ◽  
Photoheterotrophic Growth

Insight into the physiological role of a compartmentalised ferritin like protein in Rhodospirillum rubrum

2014 ◽  
Vol 31 ◽  
pp. S43-S44
Author(s):  
Jon Marles-Wright ◽  
Didi He ◽  
Atanas Georgiev ◽  
David Clarke
Keyword(s):  
Rhodospirillum Rubrum ◽  
Physiological Role ◽  
Insight Into

scholarly journals 2P247 Variation of antenna size of a purple bacterium Rhodospirillum rubrum grown under the different light intensity

2004 ◽  
Vol 44 (supplement) ◽  
pp. S171
Author(s):  
T. Mochida ◽  
M. Akiyama ◽  
Y. Itoh ◽  
K. Nagasima ◽  
M. Hara ◽  
...  
Keyword(s):  
Light Intensity ◽  
Rhodospirillum Rubrum ◽  
Purple Bacterium ◽  
Antenna Size

scholarly journals CO-Sensing Mechanisms

2004 ◽  
Vol 68 (3) ◽  
pp. 453-473 ◽  
Author(s):  
Gary P. Roberts ◽  
Hwan Youn ◽  
Robert L. Kerby
Keyword(s):  
Carbon Monoxide ◽  
Rhodospirillum Rubrum ◽  
Biological Role ◽  
Current Evidence ◽  
Physiological Effects ◽  
Co Sensor ◽  
Insight Into ◽  
Molecular Description

SUMMARY Carbon monoxide (CO) has long been known to have dramatic physiological effects on organisms ranging from bacteria to humans, but recently there have a number of suggestions that organisms might have specific sensors for CO. This article reviews the current evidence for a variety of proteins with demonstrated or potential CO-sensing ability. Particular emphasis is placed on the molecular description of CooA, a heme-containing CO sensor from Rhodospirillum rubrum, since its biological role as a CO sensor is clear and we have substantial insight into the basis of its sensing ability.

scholarly journals Roles of RubisCO and the RubisCO-Like Protein in 5-Methylthioadenosine Metabolism in the Nonsulfur Purple Bacterium Rhodospirillum rubrum

2009 ◽  
Vol 192 (5) ◽  
pp. 1324-1331 ◽  
Author(s):  
Jaya Singh ◽  
F. Robert Tabita
Keyword(s):  
Rhodospirillum Rubrum ◽  
Sulfur Metabolism ◽  
Growth Conditions ◽  
Purple Bacterium ◽  
Bisphosphate Carboxylase ◽  
Functional Roles ◽  
New Family ◽  
Salvage Pathways ◽  
Nonsulfur Purple Bacterium

ABSTRACT Ribulose 1,5-bisphosphate carboxylase/oxygenase (RubisCO) catalyzes the assimilation of atmospheric CO2 into organic matter and is thus central to the existence of life on earth. The beginning of the 2000s was marked by the discovery of a new family of proteins, the RubisCO-like proteins (RLPs), which are structural homologs of RubisCO. RLPs are unable to catalyze CO2 fixation. The RLPs from Chlorobaculum tepidum, Bacillus subtilis, Geobacillus kaustophilus, and Microcystis aeruginosa have been shown to participate in sulfur metabolism. Whereas the precise function of C. tepidum RLP is unknown, the B. subtilis, G. kaustophilus, and M. aeruginosa RLPs function as tautomerases/enolases in a methionine salvage pathway (MSP). Here, we show that the form II RubisCO enzyme from the nonsulfur purple bacterium Rhodospirillum rubrum is also able to function as an enolase in vivo as part of an MSP, but only under anaerobic conditions. However, unlike B. subtilis RLP, R. rubrum RLP does not catalyze the enolization of 2,3-diketo-5-methylthiopentyl-1-phosphate. Instead, under aerobic growth conditions, R. rubrum RLP employs another intermediate of the MSP, 5-methylthioribulose-1-phosphate, as a substrate, resulting in the formation of different products. To further determine the interrelationship between RubisCOs and RLPs (and the potential integration of cellular carbon and sulfur metabolism), the functional roles of both RubisCO and RLP have been examined in vivo via the use of specific knockout strains and complementation studies of R. rubrum. The presence of functional, yet separate, MSPs in R. rubrum under both aerobic (chemoheterotrophic) and anaerobic (photoheterotrophic) growth conditions has not been observed previously in any organism. Moreover, the aerobic and anaerobic sulfur salvage pathways appear to be differentially controlled, with novel and previously undescribed steps apparent for sulfur salvage in this organism.

4-Hydroxyphenethyl alcohol - a new cytokinin-like substance from the phototrophic purple bacterium Rhodospirillum rubrum 1R

FEBS Letters ◽  
1995 ◽  
Vol 365 (1) ◽  
pp. 10-12 ◽  
Author(s):  
Olga P. Serdyuk ◽  
Lidiya D. Smolygina ◽  
Eugine N. Muzafarov ◽  
Vladimir M. Adanin ◽  
Michael U. Arinbasarov
Keyword(s):  
Rhodospirillum Rubrum ◽  
Purple Bacterium
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