>4r3a_A mol:protein length:352 Blue-light-activated histidine kinase 2GEFKGLMAVGLAEHDKEAWGRLPFSLTIADISQDDEPLIYVNRAFEQMTGYSRSSVVGRNCRFLQGEKTDPGAVERLAKAIRNCEEVEETIYNYRADGEGFWNHLLMGPLEDQDEKCRYFVGIQVDMGQSESPDRATELDRQLAEVQHRVKNHLAMIVSMIRIQSSQAGGVGSQFDSLSRRVEALQLLYQEMDIAGAAKATDKIIPLGAYLGRIASAINHIDGRGAIKVNVQADTVDVPVETAGRIGLLVSEVLTNALQHAFSDRASGVVQLRSSVMSGEQLRVTVEDDGRGIPEDCDWPNEGNLGSRIVRQLVQGLGAELNVTRGGTGTIVNIDIPLSQQKTLIADERTKD