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Journal of Bacteriology, October 2001, p. 5718-5724, Vol. 183, No. 19
Department of Microbiology and Molecular
Genetics, Harvard Medical School, Boston, Massachusetts 02115
Received 13 February 2001/Accepted 20 June 2001
The absence of glycopeptidolipids (GPLs) abolishes the ability of
mycobacteria both to slide over the surface of motility plates and to
form biofilms on polyvinyl chloride. In a screen for biofilm-defective
mutants of Mycobacterium smegmatis mc2155, a
new mutant was obtained that resulted in partial inhibition of both
processes and also showed an intermediate rough colony morphology. The
mariner transposon insertion mapped to a GPL biosynthesis gene (atf1) which encodes a putative acetyltranferase
involved in the transfer of acetyl groups to the glycopeptide core.
Physical characterization of the GPLs from the atf1 mutant
demonstrated that they were not acetylated.
0021-9193/01/$04.00+0 DOI: 10.1128/JB.183.19.5718-5724.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Glycopeptidolipid Acetylation Affects Sliding
Motility and Biofilm Formation in Mycobacterium
smegmatis
and
*
Corresponding author. Mailing address: Department of
Microbiology and Molecular Genetics, Harvard Medical School, Boston, MA
02115. Phone: (617) 432-1776. Fax: (617) 738-7664. E-mail: rkolter{at}hms.harvard.edu.
Present address: The Rockefeller University, New York, NY 10021.
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