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Mariprofundus ferrooxydans

ABSTRACT: Iron-oxidizing bacterium

PROVIDER: PRJNA35667 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR12123114.fastq.gz	Fastqsanger.gz
	SRR12123115.fastq.gz	Fastqsanger.gz
	SRR12123116.fastq.gz	Fastqsanger.gz
	SRR12123117.fastq.gz	Fastqsanger.gz

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Mariprofundus ferrooxydans proteomic profile

Project description:A proteomic profile of the chemolithoautotrophic, neutrophilic, iron-oxidizing Mariprofundus ferrooxydans was obtained in duplicates and analyzed via LC-MS/MS. Additionally, a proteomic analysis of the membrane fraction is included.

2015-06-22 | PXD001050 | Pride

Mariprofundus ferrooxydans proteomic profile - membrane

Project description:A proteomic analysis of a redox active membrane fraction (doublet at >200 kDa) of Mariprofundus ferrooxydans, a chemolithoautotrophic, neutrophilic, iron-oxidizing Zetaproteobacterium.

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Mariprofundus ferrooxydans PV-1 the first genome of a marine Fe(II) oxidizing Zetaproteobacterium.

Project description:Mariprofundus ferrooxydans PV-1 has provided the first genome of the recently discovered Zetaproteobacteria subdivision. Genome analysis reveals a complete TCA cycle, the ability to fix CO(2), carbon-storage proteins and a sugar phosphotransferase system (PTS). The latter could facilitate the transport of carbohydrates across the cell membrane and possibly aid in stalk formation, a matrix composed of exopolymers and/or exopolysaccharides, which is used to store oxidized iron minerals outside the cell. Two-component signal transduction system genes, including histidine kinases, GGDEF domain genes, and response regulators containing CheY-like receivers, are abundant and widely distributed across the genome. Most of these are located in close proximity to genes required for cell division, phosphate uptake and transport, exopolymer and heavy metal secretion, flagellar biosynthesis and pilus assembly suggesting that these functions are highly regulated. Similar to many other motile, microaerophilic bacteria, genes encoding aerotaxis as well as antioxidant functionality (e.g., superoxide dismutases and peroxidases) are predicted to sense and respond to oxygen gradients, as would be required to maintain cellular redox balance in the specialized habitat where M. ferrooxydans resides. Comparative genomics with other Fe(II) oxidizing bacteria residing in freshwater and marine environments revealed similar content, synteny, and amino acid similarity of coding sequences potentially involved in Fe(II) oxidation, signal transduction and response regulation, oxygen sensation and detoxification, and heavy metal resistance. This study has provided novel insights into the molecular nature of Zetaproteobacteria.

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