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. 2020 Jul 6;21(13):4783. doi: 10.3390/ijms21134783

Table 3.

Experimental and average simulated distances (in Å) between His residues (or water molecules) and copper ions (Cu2+A and Cu2+B) in the TYRBm-KA system. The experimental distances for His residues were taken from the crystal structure (Protein Data Bank (PDB) code: 5I38) [45]. For the water molecules, the experimental values are 1.96 and 2.28 Å for water molecules in the equatorial and axial positions, respectively [69].

Residue (Atom) Ion Experimental Distance Average Simulated Distances
His204 (NE2) Cu2+A 2.09 2.15 ± 0.07
His208 (NE2) 2.07 2.30 ± 0.07
His231 (NE2) 2.02 2.02 ± 0.11
WT572 (O) 2.28 2.34 ± 0.07
WT613 (O) 1.96 2.11 ± 0.04
WT657 (O) 1.96 2.12 ± 0.03
His42 (NE2) Cu2+B 2.09 2.00 ± 0.09
His60 (NE2) 2.07 2.33 ± 0.06
His69 (NE2) 2.02 2.01 ± 0.10
WT610 (O) 1.96 2.11 ± 0.03
WT646 (O) 1.96 2.12 ± 0.03
WT653 (O) 2.28 2.26 ± 0.06

His: Histidine; WT: Water; NE2: Nitrogen atom; O: Oxigen atom; Cu2+: Copper ion.