1i0e is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The crystal structure of human muscle creatine kinase has been determined by the molecular-replacement method and refined at 3.5A resolution. The structures of both the monomer and the dimer closely resemble those of the other known structures in the creatine kinase family. Two types of dimers, one with a non-crystallographic twofold symmetry axis and the other with a crystallographic twofold symmetry axis, were found to exist simultaneously in the crystal. These dimers form an infinite "double-helix"-like structure along an unusual long crystallographic 3(1) axis.
Structure of human muscle creatine kinase.,Shen YQ, Tang L, Zhou HM, Lin ZJ Acta Crystallogr D Biol Crystallogr. 2001 Aug;57(Pt 8):1196-200. PMID:11517911[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.