The nature of the active site of hemerythrin.

  title={The nature of the active site of hemerythrin.},
  author={Irving Myron Klotz and Themis A. Klotz and Harold A. Fiess},
  journal={Archives of biochemistry and biophysics},
  volume={68 2},
Abstract The oxygen-carrying pigment, hemerythrin, contains 0.81% Fe and has 2.4 Fe atoms per O 2 molecule bound. It has been demonstrated that 2 of the 2.4 iron atoms are bound directly to the protein through sulfhydryl side chains, and that these two are close neighbors. It is these two iron atoms which participate directly in holding the O 2 molecule. The near-ultraviolet spectrum of oxyhemerythrin resembles closely that of methemerythrin [Fe(III)], not at all that of deoxyhemerythrin [Fe(II… CONTINUE READING