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N-terminal domain of YycH and similar proteins This protein appears to be a member of a somewhat larger structural family conserved in Firmicutes. YycH plays a role in signal transduction and is found immediately downstream of the essential histidine kinase YycG. YycG forms a two-component system together with its cognate response regulator YycF. YycH functions as a modulator of YycG activity, possibly by interacting with YchI. All three molecules (YchG, YchH, and YchI) have been characterized as membrane proteins, and they may be able to form homodimers. This model describes the N-terminal domain of YycH.
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