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Journal of Bacteriology, November 2005, p. 7863-7865, Vol. 187, No. 22
0021-9193/05/$08.00+0 doi:10.1128/JB.187.22.7863-7865.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.
Department of Oral Biology,1 Department of Pathology and Laboratory Medicine, School of Dentistry and School of Medicine, Indiana University, Indianapolis, Indiana 462022
Received 15 April 2005/ Accepted 16 August 2005
Allelic replacement of the C terminus of a Streptococcus mutans surface protein affects murein hydrolase activity. The targeted open reading frame encodes a 67-kDa protein (SmaA) with an N-terminal signal sequence and cleavage site, three 46-amino-acid (aa) direct repeats, and two 88-aa direct repeats. The identical autolytic profile was obtained using a sortase mutant (SrtA).
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