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. Author manuscript; available in PMC: 2007 Oct 15.
Published in final edited form as: J Struct Biol. 2006 Dec 24;158(3):494–502. doi: 10.1016/j.jsb.2006.12.004

Figure 4.

Figure 4

Stereo view of the inner cavity from the cytoplasmic side up into the cavity of the trimer showing the conserved phenylalanine residues lining the cavity. Amino acids F386 and F388 (red), F458 and F459 (purple) have been previously reported to bind substrates. F4 and F5 (blue) show conserved residues in the N-terminus that may be involved in substrate discrimination and uptake from the cytosol.