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. 2022 Aug 24;5:862. doi: 10.1038/s42003-022-03824-9

Fig. 3. Identification of the Zn2+ (Ion) and acetate (ACT) ion in the putative active site of kpChbG.

Fig. 3

a The electron density map around the metal ion binding site of kpChbG. The 2Fo-Fc map contoured at the 1σ level is shown. Residues coordinated with the metal ion are labeled. b Electrostatic surface representation of kpChbG. The scale bar ranges from −7.3 kT/e (red) to 7.3 kT/e (blue). The black dashed box shows the magnified region of the putative active site. c Cartoon representation of the putative active site of kpChbG. Residues involved in coordination of the metal ion and acetate ion are colored red and blue, respectively. Critical residues involved in kpChbG catalysis (D10 and H206) are colored green. d Table showing the metal ion concentration in kpChbG (µg/kg) analyzed by ICP-MS. n.d.: not determined.