1BH4:
reference: Solution structure by NMR of circulin A: a macrocyclic knotted peptide having anti-HIV activity., Daly NL, Koltay A, Gustafson KR, Boyd MR, Casas-Finet JR, Craik DJ, J Mol Biol 1999 Jan 8;285(1):333-45. PMID: 9878410

This OCA Structure page
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