2KRA:
reference: Chemical synthesis and structure of the prokineticin Bv8., Morales RA, Daly NL, Vetter I, Mobli M, Napier IA, Craik DJ, Lewis RJ, Christie MJ, King GF, Alewood PF, Durek T, Chembiochem. 2010 Sep 3;11(13):1882-8. doi: 10.1002/cbic.201000330. PMID: 20677202

This OCA Structure page
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