The EPR spectrum and orientation of cytochrome b‐563 in the chloroplast thylakoid membrane

FEBS Letters

Bergström, Jörgen¹ 

[1] Department of Biochemistry and Biophysics, Chalmers University of Technology and University of Göteborg, S-412 96 Göteborg, Sweden

关键词: Cytochrome b-563;    Cytochrome;    Heme orientation;    EPR;    Chloroplast;    E m7;    midpoint reduction potential at pH 7 relative to a standard hydrogen electrode;    Pipes;    piperazine-N;    N'-bis(2-ethanesulfonic acid);   

DOI  :  10.1016/0014-5793(85)80959-5

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The EPR spectrum of cytochrome b-563 in spinach chloroplasts shows that both hemes of the cytochrome are in a low-spin state with g _z = 3.5. The orientation of the two heme planes is found to be perpendicular to the thylakoid membrane plane in magnetically aligned chloroplasts. This may be relevant for the function of cytochrome b-563, e.g., in electron transport coupled to proton translocation.

【 授权许可】

Unknown