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Effects of Ala or Val to Phe or Trp mutations on entry and escape in CerHb and SwMb. Blue diamonds denote helical positions typically associated with the E7 gate pathway. Green asterisks are associated with positions along the apolar tunnel pathway. Data for SwMb were taken from this study and Ref. 13. The enhancement factor, Renhance, on the y axis is defined in Equation 3, and the topological helical position is given along the x axis.
