Structure determination and refinement of homotetrameric hemoglobin from Urechis caupo at 2.5 A resolution.
Kolatkar, P.R., Ernst, S.R., Hackert, M.L., Ogata, C.M., Hendrickson, W.A., Merritt, E.A., Phizackerley, R.P.(1992) Acta Crystallogr.,Sect.B 48: 191-199
- PubMed: 1515107 
- PubMed Abstract: 
A 5 A resolution multiple isomorphous replacement solution for hemoglobin isolated from Urechis caupo revealed a previously unobserved quaternary structure for tetrameric hemoglobin [Kolatkar, Meador, Stanfield & Hackert (1988). J. Biol. Chem. 263(7) ...