>4R3A_1|Chains A, B|Blue-light-activated histidine kinase 2|Erythrobacter litoralis HTCC2594 (314225) GEFKGLMAVGLAEHDKEAWGRLPFSLTIADISQDDEPLIYVNRAFEQMTGYSRSSVVGRNCRFLQGEKTDPGAVERLAKAIRNCEEVEETIYNYRADGEGFWNHLLMGPLEDQDEKCRYFVGIQVDMGQSESPDRATELDRQLAEVQHRVKNHLAMIVSMIRIQSSQAGGVGSQFDSLSRRVEALQLLYQEMDIAGAAKATDKIIPLGAYLGRIASAINHIDGRGAIKVNVQADTVDVPVETAGRIGLLVSEVLTNALQHAFSDRASGVVQLRSSVMSGEQLRVTVEDDGRGIPEDCDWPNEGNLGSRIVRQLVQGLGAELNVTRGGTGTIVNIDIPLSQQKTLIADERTKD