Journal
CURRENT OPINION IN MICROBIOLOGY
Volume 13, Issue 2, Pages 160-167Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.mib.2009.12.009
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Funding
- NIH [R37 GM47958]
- Howard Hughes Medical Institute
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Response regulator (RR) proteins exploit different molecular surfaces in their inactive and active conformations for a variety of regulatory intramolecular and/or intermolecular protein-protein interactions that either inhibit or activate effector domain activities. This versatile strategy enables numerous regulatory mechanisms among RRs. The recent accumulation of structures of inactive and active forms of multidomain RRs and RR complexes has revealed many different domain arrangements that have provided insight into regulatory mechanisms. Although diversity is the rule, even among subfamily members containing homologous domains, several structural modes of interaction and mechanisms of regulation recur frequently. These themes involve interactions at the alpha 4-beta 5-alpha 5 face of the receiver domain, modes of dimerization of receiver domains, and inhibitory or activating heterodomain interactions.
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