Proton Relaxation and Charge Accumulation During Oxygen Evolution in Photosynthesis.

Abstract

The water proton spin-spin (transverse) relaxation rate of chloroplast suspensions has been measured after each of a series of 2.4 microsec light flashes. The sequence of relaxation rates shows a damped oscillatory pattern with a period of four and peaks after the 3rd, 7th, 11th, and 15th flashes. This result indicates that water proton relaxation can be used to monitor the charge accumulating states as postulated by Kok and co-workers for the oxygen evolving mechanism in green plants ((1970) Photochem. Photobiol. 11, 457-475).

Document Details

Document Type
Technical Report
Publication Date
Jan 02, 1976
Accession Number
ADA020944

Entities

People

  • Govindjee
  • Herbert S. Gutowsky
  • N. Zumbulyadis
  • P. G. Schmidt
  • T. Wydrzynski

Organizations

  • University of Illinois Urbana–Champaign

Tags

DTIC Thesaurus Topics

  • Personal Information Managers
  • Photosynthesis
  • Plastids
  • Sequences
  • Transverse

Fields of Study

  • Physics

Readers

  • Chemistry (specifically Chemical Fluorescence)
  • Mathematics or Statistics
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.