A study is presented on the effect of 2,4-dinitrofluorobenzene (DFNB) on the enzymatic properties of mitochondrial b-c1 complex. The chemical modification by DNFB strongly inhibits the reductase activity of the complex, this being accompanied by labelling by [3H]DNFB of core protein I, the apoprotein of b cytochromes and the 12 kDa subunit. Chemical modification by DNFB appears to alter, in particular, the domain of heme b-562.
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| http://dx.doi.org/10.1016/0014-5793(86)80181-8 | DOI Listing |
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