2IWA:
reference: Papaya glutamine cyclotransferase shows a singular five-fold beta-propeller architecture that suggests a novel reaction mechanism., Guevara T, Mallorqui-Fernandez N, Garcia-Castellanos R, Garcia-Pique S, Ebert Petersen G, Lauritzen C, Pedersen J, Arnau J, Gomis-Ruth FX, Sola M, Biol Chem. 2006 Oct-Nov;387(10-11):1479-86. PMID: 17081122

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