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Figure 4
The Ca2+-coordinated loops at the active site with residues interacting with either the Ca2+ ion (black sphere) or xylohexaose (orange) and glucuronic acid (yellow) from BoAgu115A (PDB entry 4c91). The hydrogen bonds coordinating the waters around the Ca2+ ion (black sphere) and interacting with the xylohexaose (orange) are shown by yellow dotted lines (see the text for distances). The subsites are indicated and named according to McKee et al. (2012BB28). D-Xylopyranose moiety 901 corresponds to +2NR, 902 to +1NR, 903 to +1, 904 to +1R and 905 to +2R.

Journal logoSTRUCTURAL
BIOLOGY
ISSN: 2059-7983
Volume 78| Part 5| May 2022| Pages 658-668
https://doi.org/10.1107/S2059798322003527
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