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The N-finger (residues 1–7) is depicted in dark green, domain I (residues 8–101) in blue, domain II (residues 102–184) in orange, the loop region (residues 185–200) in light green, domain III (residues 201–306) in red, conserved His 41 and Cys 145 residues are in yellow, and the groove between domains II and III is encircled by blue ellipse.
