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J Bacteriol, February 1998, p. 759-761, Vol. 180, No. 3
0021-9193/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Contact Stimulation of Tgl and Type IV Pili in Myxococcus xanthus

Daniel Wall, Samuel S. Wu,dagger and Dale Kaiser*

Departments of Biochemistry and Developmental Biology, Stanford University, Stanford, California 94305

Received 18 August 1997/Accepted 19 November 1997

Myxococcus xanthus tgl mutants lack social motility and type IV pili but can be transiently stimulated to swarm and to make pili by contacting tgl+ cells. The absence of pili in tgl mutants is shown not to be due to the absence of pilin. The rate of pilus elongation after Tgl stimulation is shown to be similar to the rate of pilus elongation in wild-type cells, using a new more rapid assay for stimulation.

* Corresponding author. Mailing address: Departments of Biochemistry and Developmental Biology, Stanford University, Stanford, CA 94305. Phone: (650) 723-6616. Fax: (650) 725-7739. E-mail: luttman{at}cmgm.stanford.edu.

dagger Present address: Department of Internal Medicine, University of California---Los Angeles, Los Angeles, CA 90095.




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