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3n7e is a 2 chain structure with sequence from Cupriavidus metallidurans CH34. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
COPK_CUPMC Involved in resistance to copper. Can bind up to 2 copper ions. Has higher affinity for Cu(+) than for Cu(2+).[1]
References
↑ Bersch B, Favier A, Schanda P, van Aelst S, Vallaeys T, Coves J, Mergeay M, Wattiez R. Molecular structure and metal-binding properties of the periplasmic CopK protein expressed in Cupriavidus metallidurans CH34 during copper challenge. J Mol Biol. 2008 Jul 4;380(2):386-403. Epub 2008 May 15. PMID:18533181 doi:10.1016/j.jmb.2008.05.017