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An asymmetric low‐spin EPR signal of cytochrome b 6 in the cytochrome b 6 f ‐complex from spinach chloroplasts
Author(s) -
Nitschke Wolfgang,
Hauska Günter
Publication year - 1987
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(87)81541-7
Subject(s) - cytochrome b , cytochrome , cytochrome f , cytochrome c , electron paramagnetic resonance , cytochrome c1 , cytochrome b6f complex , heme , coenzyme q – cytochrome c reductase , chemistry , stereochemistry , crystallography , chloroplast , nuclear magnetic resonance , mitochondrion , biochemistry , physics , mitochondrial dna , enzyme , gene , photosystem i
Cytochrome b 6 from the chloroplast cytochrome b 6 f ‐complex shows an asymmetric g z = 3.85 low‐spin EPR signal in addition to a signal at g z = 3.6–3.7, similar to cytochrome b in mitochondrial or bacterial cytochrome bc 1 ‐complexes. However, the signal is more unstable and probably represents the highly strained conformation of only part of the low‐potential heme in cytochrome b 6 .