Charge motion in MbCO crystals after flash photolysis

I. E. Iben, L. Keszthelyi, D. Ringe, G. Váró

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Abstract

Charge motion accompanying the dissociation and recombination of carbon monoxide to oriented myoglobin crystals has been observed. The magnitude of the electrical signals detected after photodissociation by electrodes on either side of MbCO crystals of type A is consistent with the x-ray data showing that the doubly charged iron ion lies in the mean heme plane when a ligand is bound and moves out of the plane when deligated. Beyond 10 ms, the time development of the electrical signal is consistent with the kinetics observed optically after flash photolysis on the same crystals.

Original languageEnglish
Pages (from-to)459-463
Number of pages5
JournalBiophysical journal
Volume56
Issue number3
DOIs
Publication statusPublished - Jan 1 1989

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ASJC Scopus subject areas

  • Biophysics

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