5ETU:
reference: Natural and non-natural amino-acid side-chain substitutions: affinity and diffraction studies of meditope-Fab complexes., Bzymek KP, Avery KA, Ma Y, Horne DA, Williams JC, Acta Crystallogr F Struct Biol Commun. 2016 Nov 1;72(Pt 11):820-830. doi:, 10.1107/S2053230X16016149. Epub 2016 Oct 24. PMID: 27834791

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