1NTK:
reference: Structural basis for the quinone reduction in the bc1 complex: a comparative analysis of crystal structures of mitochondrial cytochrome bc1 with bound substrate and inhibitors at the Qi site., Gao X, Wen X, Esser L, Quinn B, Yu L, Yu CA, Xia D, Biochemistry 2003 Aug 5;42(30):9067-80. PMID: 12885240

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