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Superimposed homology modeled structure (green) with (a) mutant (E139V), (b) mutant (E150G), (c) mutant (E189K), (d) mutant (K164Q), (e) mutant (P102Q), (f) mutant (P102R), (g) mutant (P102T), (h) mutant (R50C), (i) mutant (R132S), (j) mutant (R152Q), (k) mutant (R154S), (l) mutant (R176C) all in red colour.
