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Journal of Bacteriology, April 2007, p. 3322-3327, Vol. 189, No. 8
0021-9193/07/$08.00+0     doi:10.1128/JB.01633-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

A Phosphoenolpyruvate-Dependent Phosphotransferase System Is the Principal Maltose Transporter in Streptococcus mutans{triangledown}

Alexander J. Webb, Karen A. Homer, and Arthur H. F. Hosie*

Microbiology, King's College London Dental Institute, London, United Kingdom

Received 20 October 2006/ Accepted 26 January 2007

We report that a phosphoenolpyruvate-dependent phosphotransferase system, MalT, is the principal maltose transporter for Streptococcus mutans. MalT also contributes to maltotriose uptake. Since maltose and maltodextrins are products of starch degradation found in saliva, the ability to take up and ferment these carbohydrates may contribute to dental caries.

* Corresponding author. Mailing address: Microbiology, King's College London Dental Institute, Floor 28, Guy's Tower, King's College London, Guy's Campus, London SE1 9RT, United Kingdom. Phone: 44 (0)20 7188 1825. Fax: 44 (0)20 7188 3871. E-mail: arthur.hosie{at}kcl.ac.uk

{triangledown} Published ahead of print on 2 February 2007.

Journal of Bacteriology, April 2007, p. 3322-3327, Vol. 189, No. 8
0021-9193/07/$08.00+0     doi:10.1128/JB.01633-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



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