PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17562787-3 2007 We demonstrate that cells deficient in the complex III subunit cytochrome b, which are respiratory incompetent, increase ROS levels and stabilize the HIF-1alpha protein during hypoxia. Reactive Oxygen Species 121-124 mitochondrially encoded cytochrome b Homo sapiens 63-75