in comparison with myoglobin and human and glycera dibranchiata hemoglobins , the heme distal side amino acid exchanges within the heme environment of elephant tetrameric hemoglobin ( hbe ) only slightly affect the electronic and esr spectra of hbe ( iii ) and hbe ( ii ) derivatives , several of which were prepared and characterized by optical and esr spectroscopy .
C0086418
human
C1415484
hbe