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. Author manuscript; available in PMC: 2020 Feb 5.
Published in final edited form as: Proteins. 2017 Jul 24;85(10):1831–1844. doi: 10.1002/prot.25336

FIGURE 2.

FIGURE 2

Binding of OHHL to YenR. A: OHHL lies within a cavity with a four-stranded β sheet on one side and five short α helices on the other. B. YenR completely engulfs OHHL so that there is no contact between the pheromone and bulk solvent. The figure shows the inner surface of the protein in the presence of OHHL. C. YenR makes four direct hydrogen bonds to OHHL. Ser32 binds the 3-oxo group of the acyl group, Try50 binds the 1-oxo group of the acyl chain, Trp54 binds the ring oxo group, and Asp67 binds the imino group [Color figure can be viewed at wileyonlinelibrary.com]