6hit is a 8 chain structure with sequence from Gadus morhua. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
↑ Verde C, Balestrieri M, de Pascale D, Pagnozzi D, Lecointre G, di Prisco G. The oxygen transport system in three species of the boreal fish family Gadidae. Molecular phylogeny of hemoglobin. J Biol Chem. 2006 Aug 4;281(31):22073-22084. PMID:16717098 doi:10.1074/jbc.M513080200