Correction: Site-Directed Mutagenesis of a Hyperthermophilic Endoglucanase Cel12B from Thermotoga maritima Based on Rational Design.

Fig 4 is incorrect. Fig 4 incorrectly appears a duplicate of Fig 5. The authors have provided a corrected version of Fig 4 here.

Fig 4

Structures of site-directed amino acid residues with other vicinal residues by H-bond.

A, B: Glutamic acid 225 was mutated into Histidine. C, D: Aspartic acid 37 was mutated into Valine. E, F: Lysine 207 was mutated into Glutamic acid.