1MI8:
reference: Crystal structure of a mini-intein reveals a conserved catalytic module involved in side chain cyclization of asparagine during protein splicing., Ding Y, Xu MQ, Ghosh I, Chen X, Ferrandon S, Lesage G, Rao Z, J Biol Chem 2003 Oct 3;278(40):39133-42. Epub 2003 Jul 23. PMID: 12878593

This OCA Structure page
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