PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1169971-7 1975 The peculiarity of hyperfine-shifted methyl proton signals for other myoglobin complexes such as azide and imidazole derivatives is also discussed briefly in terms of constraint of heme side methyl group buried in a hydrophobic cleft. Azides 97-102 myoglobin Equus caballus 69-78