We note that the radius of the high solvent region, as defined by the full-width of solvent distribution at half maximum, is slightly less than 1.0 nm, suggesting that the true structural pore diameter might be slightly less than 0.96 nm, thus making the gyroid even more consistent with the bilayer-to-bilayer distance as described in Fig and the accompanying text. However, the definition of the "pore" in the context of these simulations is sufficiently difficult to define precisely such that one should have some caution in the interpretation; minimally, however, these results are entirely consistent with the data in Fig .