Amounts varied from «no detectable CoQ10», to 75% of stated dose, and up to a 75% excess. Generally, CoQ10 is well tolerated. Two ≈150-μl EPR samples were prepared from each set of freeze-quench shots. Oxford University Press. ISBN 978-0-1985-2063-4. Gardiner, C.W.; Zoller, Peter (2010). Quantum Noise. Amino acid sequence analysis and structural mapping into a molecular model of ETF:QO show that all mutations map at FAD interacting residues, two of which at the nucleotide-binding Rossmann fold.