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Phylogeny of Echinoderm Hemoglobins

Fig 6

Structural superposition of the echinoderm structure 1hlm (brown) with the cytoglobin structure 1urv (blue).

The two structures show a very close correspondence, with some localized deviations, such as at helix D, which is disordered in 1hlm (marked by Arg65), and at the C-terminal end of helix G (marked by Val131).

Fig 6