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. 2020 Feb 26;21:51. doi: 10.1186/s13059-020-01956-x

Fig. 4.

Fig. 4

α-helical structure is critical for the Cas9-inhibiting activity of G8PPD. a Alanine mutations at positions 6–11 abolish the inhibitory activity of G8PPD. The results are shown as mean ± SD (n = 3). The arrow denotes cleavage products. b Structure of G8PPD peptide (PDB entry 2MJZ), displayed by PyMOL. Residues 6–11 are shown as stick. c CD spectra of f1 G8PPD WT and mutant 2