Molecular Mechanisms in the Activation of Abscisic Acid Receptor PYR1
Figure 6
The PYR1-ABA-HAB1 complex (PDB ID 3QN1) with residues on the binding surface shown by orange (PYR1) and green (HAB1) sticks.
Polar interactions comprise residues H60–E323, K63–S200, K63–E201, I84–G246, S85–G246, G86–R389, S85–E203, P88–Q386, P88–R389, R116–W385, N151–Q384, and L166–E323. Non-polar interactions include residues F61–Y404, I84–G246, R116–Q386, L87–V393, L117–W385, P148–W385, D155–I383, M158–I383, M158–F391, F159–V393, F159–W385, F159–G392, T142–F391, and L166–Y404 [17]. These include both direct and water-mediated interactions. ABA is represented by a translucent surface, which is colored according to the charge distribution: red for positively, blue for negatively, and white for neutrally charged ABA atoms, respectively.