PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 27101081-1 2016 Orientations of the FA and FB iron-sulfur (FeS) clusters in a structure-unknown type-I homodimeric heriobacterial reaction center (hRC) were studied in oriented membranes of the thermophilic anaerobic photosynthetic bacterium Heliobacterium modesticaldum by electron paramagnetic resonance (EPR), and compared with those in heterodimeric photosystem I (PS I). Iron 43-46 histidine rich calcium binding protein Homo sapiens 131-134