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Figure 5
Comparison of the trimeric structures of MPS (a) and DDG aldolase (b) related by a crystallographic threefold axis. Each flexible loop coloured in magenta (there are helical parts in this region of DDG aldolase) is joined to the active site of the next protomer. The C-terminal long α-helices (green) and core β-barrels (blue) are also highlighted, along with the magnesium ion (red).

Journal logoSTRUCTURAL
BIOLOGY
ISSN: 2059-7983
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