Long-Range Allosteric Signaling in Red Light-Regulated Diguanylyl Cyclases

Geoffrey Simon Gourinchas, Stefan Etzl, Christoph Göbl, Ursula Vide, Tobias Madl, Andreas Winkler

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Nature has evolved an astonishingly modular architecture of covalently linked protein domains with diverse functionalities to enable complex cellular networks that are critical for cell survival. The coupling of sensory modules with enzymatic effectors allows direct allosteric regulation of cellular signaling molecules in response to diverse stimuli. We present molecular details of red light–sensing bacteriophytochromes linked to cyclic dimeric guanosine monophosphate–producing diguanylyl cyclases. Elucidation of the first crystal structure of a full-length phytochrome with its enzymatic effector, in combination with the characterization of light-induced changes in conformational dynamics, reveals how allosteric light regulation is fine-tuned by the architecture and composition of the coiled-coil sensor-effector linker and also the central helical spine. We anticipate that consideration of molecular principles of sensor-effector coupling, going beyond the length of the characteristic linker, and the appreciation of dynamically driven allostery will open up new directions for the design of novel red light–regulated optogenetic tools.
Original languageEnglish
Article numbere1602498
JournalScience Advances
Volume3
Issue number3
DOIs
Publication statusPublished - 3 Mar 2017

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red light
sensors (equipment)
guanosine
cell communication
phytochrome
crystal structure
cell viability
proteins
optogenetics

Fields of Expertise

  • Human- & Biotechnology

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Long-Range Allosteric Signaling in Red Light-Regulated Diguanylyl Cyclases. / Gourinchas, Geoffrey Simon; Etzl, Stefan; Göbl, Christoph; Vide, Ursula; Madl, Tobias; Winkler, Andreas.

In: Science Advances, Vol. 3, No. 3, e1602498, 03.03.2017.

Research output: Contribution to journalArticleResearchpeer-review

Gourinchas, Geoffrey Simon ; Etzl, Stefan ; Göbl, Christoph ; Vide, Ursula ; Madl, Tobias ; Winkler, Andreas. / Long-Range Allosteric Signaling in Red Light-Regulated Diguanylyl Cyclases. In: Science Advances. 2017 ; Vol. 3, No. 3.
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