title: Small-angle X-ray study on the quaternary structure of erythrocruorin from Caenestheria inopinata.
abstract: The erythrocruorin of the clam shrimp Caenestheria inopinata was studied in sodium phosphate buffer at pH 6.8 by small-angle X-ray scattering. The following molecular parameters were determined: radius of gyration 4.77 +/- 0.05 nm, maximum dimension 14.0 +/- 0.5 nm and a volume of 640 +/- 40 nm3. A model which fits the experimental data well is presented. The model is composed of 10 subunits arranged symmetrically in two layers, whereby five subunits are always forming a ring.
authors.affiliation: Institut für Physikalische Chemie, Universität Graz, Austria.
authors.forename: I
authors.initials: I
authors.lastname: Pilz
authors.forename: E
authors.initials: E
authors.lastname: Schwarz
authors.forename: Y
authors.initials: Y
authors.lastname: Tsfadia
authors.forename: E
authors.initials: E
authors.lastname: Daniel
mesh_terms: D000818:Animals; D033364:Decapoda; D006454:Hemoglobins / Q000737:chemistry*; D046911:Macromolecular Substances; D008961:Models, Structural; D011487:Protein Conformation; D014961:X-Ray Diffraction / Q000379:methods
chemical_list: D006454:Hemoglobins; D046911:Macromolecular Substances; C064665:erythrocruorin