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Figure 1
Overall structure of PSMA. (a) Overall structure of the PSMA monomer (N-domain, wheat; C-domain, blue). The two catalytic residues (Asp253 and Glu153) that are strictly conserved in the GH57 family α-amylases are shown in stick representation. (b) The (β/α)7-barrel of the N-domain with a long protruding loop (residue 16–52) interacts with and stabilizes the C-domain. (c) Top-down (left) and side views (right) of the PSMA tetrameric ring structure. The ring dimensions are marked. Monomers A–D are coloured differently. Arrows indicate the position of the active site of each molecule.

Journal logoBIOLOGICAL
CRYSTALLOGRAPHY
ISSN: 1399-0047
Volume 70| Part 6| May 2014| Pages 1659-1668
doi:10.1107/S1399004714006567
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