3j09 is a 2 chain structure with sequence from Archaeoglobus fulgidus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
↑ Mandal AK, Cheung WD, Arguello JM. Characterization of a thermophilic P-type Ag+/Cu+-ATPase from the extremophile Archaeoglobus fulgidus. J Biol Chem. 2002 Mar 1;277(9):7201-8. Epub 2001 Dec 26. PMID:11756450 doi:10.1074/jbc.M109964200