0000000000824197
AUTHOR
Cristina Mideros-mora
Structural and Functional Characterization of Autophosphorylation in Bacterial Histidine Kinases
Autophosphorylation of histidine kinases (HK) is the first step for signal transduction in bacterial two-component signalling systems. As HKs dimerize, the His residue is phosphorylated in cis or trans depending on whether the ATP molecule used in the reaction is bound to the same or the neighboring subunit, respectively. The cis or trans autophosphorylation results from an alternative directionality in the connection between helices α1 and α2 in the HK DHp domain, in such a way that α2 could be oriented almost 90° counterclockwise or clockwise with respect to α1. Sequence and length variability of this connection appears to lie behind the different directionality and is implicated in partn…
Revisiting the pH-gated conformational switch on the activities of HisKA-family histidine kinases
13 páginas, 6 figuras, 3 tablas