Journal
MOLECULAR MICROBIOLOGY
Volume 114, Issue 3, Pages 468-479Publisher
WILEY
DOI: 10.1111/mmi.14527
Keywords
archaea; archaeal flagellum; archaellum; chemosensory arrays; chemotaxis; motility
Categories
Funding
- Deutsche Forschungsgemeinschaft [403222702-SFB 1381, 411069969]
- China Scholarship Council
Ask authors/readers for more resources
Cells require a sensory system and a motility structure to achieve directed movement. Bacteria and archaea possess rotating filamentous motility structures that work in concert with the sensory chemotaxis system. This allows microorganisms to move along chemical gradients. The central response regulator protein CheY can bind to the motor of the motility structure, the flagellum in bacteria, and the archaellum in archaea. Both motility structures have a fundamentally different protein composition and structural organization. Yet, both systems receive input from the chemotaxis system. So far, it was unknown how the signal is transferred from the archaeal CheY to the archaellum motor to initiate motor switching. We applied a fluorescent microscopy approach in the model euryarchaeon Haloferax volcanii and shed light on the sequence order in which signals are transferred from the chemotaxis system to the archaellum. Our findings indicate that the euryarchaeal-specific ArlCDE are part of the archaellum motor and that they directly receive input from the chemotaxis system via the adaptor protein CheF. Hence, ArlCDE are an important feature of the archaellum of euryarchaea, are essential for signal transduction during chemotaxis and represent the archaeal switch complex.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available