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Genes 2018, 9(3), 172; https://doi.org/10.3390/genes9030172

Comparative Analysis of Surface Layer Glycoproteins and Genes Involved in Protein Glycosylation in the Genus Haloferax

1
School of Molecular and Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
2
Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT 06269, USA
3
Institute for Systems Genomics, University of Connecticut, Storrs, CT 06269, USA
4
Department of Life Sciences, Ben Gurion University of the Negev, Beersheva 8410501, Israel
*
Author to whom correspondence should be addressed.
Received: 29 January 2018 / Revised: 1 March 2018 / Accepted: 9 March 2018 / Published: 20 March 2018
(This article belongs to the Special Issue Genetics and Genomics of Extremophiles)
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Abstract

Within the Haloferax genus, both the surface (S)-layer protein, and the glycans that can decorate it, vary between species, which can potentially result in many different surface types, analogous to bacterial serotypes. This variation may mediate phenotypes, such as sensitivity to different viruses and mating preferences. Here, we describe S-layer glycoproteins found in multiple Haloferax strains and perform comparative genomics analyses of major and alternative glycosylation clusters of isolates from two coastal sites. We analyze the phylogeny of individual glycosylation genes and demonstrate that while the major glycosylation cluster tends to be conserved among closely related strains, the alternative cluster is highly variable. Thus, geographically- and genetically-related strains may exhibit diverse surface structures to such an extent that no two isolates present an identical surface profile. View Full-Text
Keywords: glycosylation; halophilic archaea; horizontal gene transfer; lateral gene transfer; mating; recombination; S-layer glycosylation; halophilic archaea; horizontal gene transfer; lateral gene transfer; mating; recombination; S-layer
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Shalev, Y.; Soucy, S.M.; Papke, R.T.; Gogarten, J.P.; Eichler, J.; Gophna, U. Comparative Analysis of Surface Layer Glycoproteins and Genes Involved in Protein Glycosylation in the Genus Haloferax. Genes 2018, 9, 172.

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