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. The OEC has a high reduction potential in the S0 state, which is lowered as it progresses through the S1 and S2 states. Statements (I), (III), and (IV) are true.

Which of the Following Statements About the OEC Is FALSE