4HSQ:
reference: A slow-forming isopeptide bond in the structure of the major pilin SpaD from Corynebacterium diphtheriae has implications for pilus assembly., Kang HJ, Paterson NG, Kim CU, Middleditch M, Chang C, Ton-That H, Baker EN, Acta Crystallogr D Biol Crystallogr. 2014 May;70(Pt 5):1190-201. doi:, 10.1107/S1399004714001400. Epub 2014 Apr 26. PMID: 24816089

This OCA Structure page
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