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. 2020 Aug 12;15(8):e0237300. doi: 10.1371/journal.pone.0237300

Fig 6. Proposed mechanism of proton chaneling activity in E-put protein.

Fig 6

(A) Proton channeling by water hopping mechanism in M2 viroporin of influenza A virus in a pH-dependent fashion generated with CHIMERA. (B) Different conformational states of E-put protein in SARS-CoV-2 by CHIMERA showing its (i) Closed Discontinuous state (ii) Continuous Channel state 1 (iii) Continuous Channel state 2 (iv) Closed Discontinuous state generated with CHIMERA. (C) Pore volumes of the E-put protein (i) Closed Discontinuous state (ii) Continuous Channel state 1 (iii) Continuous Channel state 2 (iv) Closed Discontinuous state generated with CHIMERA and CASTp. (D) Representation of the change of pore volume as in C- i, ii, iii, iv. (E) The orientation of the bottleneck PHE 26 in different conformational states as in C- i, ii, iii, iv.