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Figure 4
(a) Conformational changes accompanying the allosteric regulation of EcAI: left, without L-Asn (PDB entry 2p2d); right, in the presence of L-Asn (PDB entry 2p2n). (b) L-Asn located in the active site and allosteric site of the EcAI protomer.

IUCrJ
Volume 8| Part 4| July 2021| Pages 514-531
ISSN: 2052-2525
https://doi.org/10.1107/S2052252521006011