Which of the following statements about the OEC is FALSE?
I.It is located at the lumenal surface of the D1 subunit
II.It has a low reduction potential in all states
III.It contains Mn₄CaO₄ or Mn₄CaO₅
IV.Part of the cluster is liganded to the amino acids Asp and Glu

Question

Quizplus · Accepted Answer

Statement II is false because the oxidation states of the OEC have varying reduction potentials. The other statements are true: the OEC is located at the lumenal surface of the D1 subunit, it contains a manganese-calcium cluster with the formula Mn₄CaO₄ or Mn₄CaO₅, and part of the cluster is liganded to the amino acids Asp and Glu. Statement IV is true.

Which of the Following Statements About the OEC Is FALSE