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. Author manuscript; available in PMC: 2009 Apr 17.
Published in final edited form as: J Mol Biol. 2008 Jul 25;382(4):931–941. doi: 10.1016/j.jmb.2008.07.051

Fig. 2.

Fig. 2

Structure of IL-23. (a) Side view of the IL-23 crystal structure. p19 helices A to D are colored in magenta, and p40 domains 1 to 3 colored in blue. The single N-acetylglucosamine residue attached to Asn200 on p40 is shown in red. Disulfide linkages are colored in yellow. (b) Face-on view of IL-23. Receptor interaction sites 2 and 3 are highlighted in ovals, and the key site 3-interacting sidechain of Trp137 is displayed.