si_0780 Oxygen_and_light_sensor_PpaA-PpsR Heme-binding SCHIC domain protein, putative oxygen sensor si_0780 Oxygen_and_light_sensor_PpaA-PpsR Transcriptional regulator, PpsR si_0780 Oxygen_and_light_sensor_PpaA-PpsR Heme oxygenase (EC 1.14.99.3) si_0780 Oxygen_and_light_sensor_PpaA-PpsR Phytochrome, two-component sensor histidine kinase (EC 2.7.3.-) si_0780 Oxygen_and_light_sensor_PpaA-PpsR PpaA, heme-binding SCHIC domain sensory protein, regulator for photosystem formation