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. 2019 Oct 22;118(4):898–908. doi: 10.1016/j.bpj.2019.10.018

Figure 4.

Figure 4

CIPK23 interacts only with the high-affinity nitrate-bound monomer. (A) The hydrophobic pocket within which the phosphorylation site T101 is located inside is closed by the local conformational state of the interface residues I101 and I91. (B) Active CIPK23 closely interacts with the inward-open part of the NRT1.1monomer A in the presence of nitrate. (C) Opening of the hydrophobic pocket and subsequent priming of T101 for phosphorylation by the active CIPK23. To see this figure in color, go online.