Fig. 5: Structural dynamics of AZG2 during cytokinin transport.
From: Structural basis of cytokinin transport by the Arabidopsis AZG2
a Structural alignment of the two different states of the trans-zeatin-bound AZG2 at pH 7.4. State-1 and state-2 are colored light blue and dark blue, respectively. The tZ molecules are shown in spheres. b Structural alignment of the monomeric AZG2 structures in the two different states at pH 7.4. c Structural changes of the transport domain of AZG2 in the two different states at pH 7.4. The tZ molecules are shown in spheres, with carbon atoms colored marine in state-2 and cyan in state-1. d View of the transmembrane segments of the AZG2 transport domain in the two different states. The tZ molecules are shown in sticks. Vertical shift of transmembrane segment is indicated by red dashed lines. e Vertical shift of the tZ molecule in the two different states. f Coordination of trans-zeatin by AZG2 in the state-2 structure at pH 7.4. Hydrogen bonds are shown as red dashed lines.
