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. 2019 Mar 12;8:e45222. doi: 10.7554/eLife.45222

Figure 5. Gating mechanism for HsTPC2.

(A and B) Structural comparison between the PI(3,5)P2-bound open (pink) and closed (blue) HsTPC2 with zoomed-in views of the structural changes at IS6 (A) and IIS(6)/IIS4-S5 (B) regions. Arrows indicate structural movements. Key gating residues are shown as yellow sticks. The π-helix in IIS6 is shown in green. (C) Working model for PI(3,5)P2 activation of HsTPC2.

Figure 5.

Figure 5—figure supplement 1. PI(3,5)P2 binding site in HsTPC2.

Figure 5—figure supplement 1.

(A and B) Ligand binding site in the 6-TM I of HsTPC2 in the ligand-bound closed (A) and apo (B) states.