>4r38_A mol:protein length:140 Blue-light-activated histidine kinase 2GEFKGLMAVGLAEHDKEAWGRLPFSLTIADISQDDEPLIYVNRAFEQMTGYSRSSVVGRNCRFLQGEKTDPGAVERLAKAIRNCEEVEETIYNYRADGEGFWNHLLMGPLEDQDEKCRYFVGIQVDMGQSESPDRATELD