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. 2001 Aug;21(16):5566–5576. doi: 10.1128/MCB.21.16.5566-5576.2001

FIG. 9.

FIG. 9

A model for RFXANK-mediated protein complex assembly on the X box of MHC II promoters. The β-hairpin loops of the first three ankyrin repeats of RFXANK interact with RFXAP, while the outer helices of the last three ankyrin repeats on the opposite face of the ankyrin repeat domain contact CIITA. The interaction between RFXAP and the inner helix of the third ankyrin repeat of RFXANK is not shown for simplicity of the model. Ankyrin repeats of RFXANK are depicted with numbers 1 to 4. N, amino terminus; C, carboxy terminus.