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Fig. 6 | Biotechnology for Biofuels

Fig. 6

From: Biochemical characterization of a novel exo-oligoxylanase from Paenibacillus barengoltzii suitable for monosaccharification from corncobs

Fig. 6

Structural comparison of PbRex8 with other GH family 8 enzymes. a PbRex8 in pale green (PDB code: 5YXT) and BhaRex8 in yellow orange (PDB code: 1WU4). b Residues from PbRex8 in pale green (Arg67, Asn122 and Arg253); residues from BhaRex8 in yellow orange (Arg68, Trp123 and Lys255). Two catalytic residues (Glu69 and Asp261) from PbRex8 are shown by red sticks. c PbRex8 in pale green (PDB code: 5YXT), BhaRex8 in salmon (PDB code: 1WU4), PhXyl8 in sand (PDB code: 1H12), Cel8A in yellow orange (PDB code: 1KWF), BGlc8H in sky blue (PDB code: 5Xd0). d The difference of Ala315-Pro318 in PbRex8 leads to the space steric hindrance. e protein–sugar stacking interactions along the substrate-binding cleft (PbRex8, BGlC8H and Cel8A) are shown in stick diagram: PbRex8 in pale green, Cel8A in yellow orange and PhXyl8 in sand

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