A three-start helical sheath on the flagellar filament of Caulobacter crescentus.

Abstract

An unusual feature in preparations of the Caulobacter crescentus flagellar filaments is that some filaments are surrounded by a set of three windings that form a sheath. We provide evidence that the sheath is composed of subunits having a molecular mass of 24,000 Da. We suggest that the sheath could be composed of protofilaments of flagellin wound around the filament.

• Authors: S Trachtenberg, D J DeRosier
• Journal: Journal of bacteriology (J Bacteriol) Vol. 174 Issue 19 Pg. 6198-206 (Oct 1992) ISSN: 0021-9193 [Print] United States
• PMID: 1400169 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, Non-P.H.S., Research Support, U.S. Gov't, P.H.S.)

Topics

• Caulobacter crescentus (ultrastructure)
• Flagella (ultrastructure)
• Image Processing, Computer-Assisted
• Microscopy, Electron
• Protein Conformation