Caldwell, Paul E., MacLean, Martin R. and Norris, Paul R.. (2007) Ribulose bisphosphate carboxylase activity and a Calvin cycle gene cluster in Sulfobacillus species. Microbiology, Vol.153 (No.7). pp. 2231-2240. ISSN 1350-0872

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Abstract

The Calvin-Benson-Bassham (CBB) cycle has been extensively studied in proteobacteria, cyanobacteria, algae and plants, but hardly at all in Gram-positive bacteria. Some characteristics of ribulose bisphosphate carboxylase/oxygenase (RuBisCO) and a cluster of potential CBB cycle genes in a Gram-positive bacterium are described in this study with two species of Sulfobacillus (Gram-positive, facultatively autotrophic, mineral sulfide-oxidizing acidophiles). In contrast to the Gram-negative, iron-oxidizing aciclophile Acidithiobacillus ferrooxidans, Sulfobacillus thermosulfidooxidans grew poorly autotrophically unless the CO2 concentration was enhanced over that in air. However, the RuBisCO of each organism showed similar affinities for CO2 and for ribulose 1,5-bisphosphate, and similar apparent derepression of activity under CO2 limitation. The red-type, form I RuBisCO of Sulfobacillus acidophilus was confirmed as closely related to that of the anoxygenic phototroph Oscillochloris trichoides. Eight genes potentially involved in the CBB cycle in S. acidophilus were clustered in the order cbbA, cbbP, cbbE, cbbL, cbbS, cbbX, cbbG and cbbT.

Item Type:	Journal Article
Subjects:	Q Science > QR Microbiology
Divisions:	Faculty of Science > Life Sciences (2010- ) > Biological Sciences ( -2010)
Journal or Publication Title:	Microbiology
Publisher:	Society for General Microbiology
ISSN:	1350-0872
Date:	July 2007
Volume:	Vol.153
Number:	No.7
Number of Pages:	10
Page Range:	pp. 2231-2240
Identification Number:	10.1099/mic.0.2007/006262-0
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
URI:	http://wrap.warwick.ac.uk/id/eprint/31595

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