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Nitrate, but not silver, ions induce spectral changes in Escherichia coli cytochrome d
Author(s) -
Hubbard Julia A.M.,
Hughes Martin N.,
Poole Robert K.
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)80293-2
Subject(s) - absorbance , cytochrome , chemistry , nitrite , escherichia coli , nitrate , absorption (acoustics) , ion , nitric oxide , cytochrome c , absorption spectroscopy , photochemistry , inorganic chemistry , analytical chemistry (journal) , nuclear chemistry , biochemistry , chromatography , materials science , organic chemistry , physics , quantum mechanics , mitochondrion , composite material , gene , enzyme
The absorbance maximum (630 nm) of reduced cytochrome d in Escherichia coli membrane particles was diminished by 160 μM AgNO 3 or NaNO 3 and accompanied by the formation of a species with an absorption maximum at 640–645 nm. Nitrite, trioxodinitrate and nitric oxide elicited qualitatively similar, but faster, changes in the spectrum of cytochrome d , suggesting that formation of a nitrosyl complex may be involved in all cases. In direct contrast to an earlier report, silver ions (160 υM) were without effect on the α‐bands of reduced cytochromes d, b or a 1 .