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J. Bacteriol. doi:10.1128/JB.01521-07
Copyright (c) 2007, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved.

A Highly Conserved Protein of Unknown Function is Required by Sinorhizobium meliloti for Symbiosis and Environmental Stress Protection

Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139

^* To whom correspondence should be addressed. Email: gwalker{at}mit.edu.

	Abstract

We report here the first characterization of the Sinorhizobium meliloti orf SMc01113. SMc01113 is a member of a highly conserved protein family, universal among bacteria. We demonstrate SMc01113 is absolutely required for S. meliloti symbiosis with alfalfa, and also to protect the bacterium from a wide range of environmental stresses.