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. Author manuscript; available in PMC: 2009 Mar 28.
Published in final edited form as: J Mol Biol. 2008 Jan 16;377(3):882–888. doi: 10.1016/j.jmb.2008.01.025

Fig. 2.

Fig. 2

(a) Schematic representation of a growing fiber. HbS molecules at the growing edge are highlighted. (b) Schematic illustration of the free-energy relief U(x) in front of the growing fiber; for the meaning of the symbols, see the text. Growth rate R, incoming flux j+, and departing flux j− of molecules in (a) and x-axis in (b) are directed along the fiber axis (c). Schematic representation of the distribution of HbS activity in front of a growing HbS polymer fiber. The x-scale in (c) is much coarser than that in (b).