PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19366605-8 2009 In addition, the formation mechanism of carotenoid radical cations in light harvesting complexes LH2 and LH1 of purple bacteria is studied. Carotenoids 40-50 procollagen-lysine,2-oxoglutarate 5-dioxygenase 1 Homo sapiens 105-108