Porin from the halophilic species Ectothiorhodospira vacuolata: cloning, structure of the gene and comparison with other porins

Wolf, Eduard, Achatz, Gernot, Imhoff, Johannes F., Schiltz, Emile, Weckesser, Jürgen and Lamers, Marinus C. (1997) Porin from the halophilic species Ectothiorhodospira vacuolata: cloning, structure of the gene and comparison with other porins Gene, 191 . pp. 225-232. DOI 10.1016/S0378-1119(97)00065-6.

[img] Text
1-s2.0-S0378111997000656-main.pdf - Published Version
Restricted to Registered users only

Download (406Kb) | Contact

Supplementary data:

Abstract

The gene coding for the anion-specific porin of the halophilic eubacterium Ectothiorhodospira (Ect.) vacuolata was cloned and sequenced, the first such gene so analyzed from a purple sulfur bacterium. It encodes a precursor protein consisting of 374 amino acid (aa)-residues including a signal peptide of 22-aa residues. Comparison with aa sequences of porins from several other members of the Proteobacteria revealed little homology. Only two regions showed local homology with the previously sequenced porins of Neisseria species, Comamonas acidovorans, Bordetella pertussis, Alcaligenes eutrophus, and Burkholderia cepacia. Genomic Southern blot hybridization studies were carried out with a probe derived from the 5′ end of the gene coding for the porin of Ect. vacuolata. Two related species, Ect. haloalkaliphila and Ect. shaposhnikovii, exhibited a clear signal, while the extremely halophilic bacterium Halorhodospira (Hlr.) halophila (formerly Ect. halophila) did not show any cross-hybridization even at low stringency. This result is in good accordance with a recently proposed reassignment within the family Ectothiorhodospiraceae, which included the separation of the extremely halophilic species into the new genus Halorhodospira.

Document Type: Article
Keywords: Ectothiorhodospiraceae; Halorhodospira; PCR; primary structure
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-MI Marine Microbiology
Refereed: Yes
DOI etc.: 10.1016/S0378-1119(97)00065-6
ISSN: 0378-1119
Projects: SFB176
Date Deposited: 18 Feb 2008 17:24
Last Modified: 26 Sep 2017 09:57
URI: http://eprints.uni-kiel.de/id/eprint/2867

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...