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Cytochrome b 6 from isolated cytochrome b 6 f complexes
Author(s) -
Hurt Eduard C.,
Hauska Günter
Publication year - 1983
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(83)80655-3
Subject(s) - cytochrome b , cytochrome , anabaena variabilis , cytochrome f , cytochrome c , cytochrome c1 , coenzyme q – cytochrome c reductase , cytochrome b6f complex , stereochemistry , crystallography , chemistry , spectroscopy , biology , biochemistry , physics , photosynthesis , photosystem i , mitochondrion , cyanobacteria , enzyme , photosystem ii , bacteria , genetics , quantum mechanics , mitochondrial dna , gene
Cytochrome b 6 from spinach chloroplasts (either within the purified cytochrome b 6 f complex, or in its isolated form) exhibits two spectral species, which correspond to two midpoint potentials. This can be demonstrated by low temperature difference spectroscopy at fixed redox potentials. The high potential form of cytochrome b 6 has a split α‐peak at 557.5 and 561.5 nm, the low potential form has a symmetrical α‐peak at 560.5 nm. Similar results were obtained with cytochrome b 6 in the isolated cytochrome b 6 f complex from the cyanobacterium Anabaena variabilis .