Small-angle X-ray study on the quaternary structure of erythrocruorin from Caenestheria inopinata.
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.
Pilz
I
I
Institut für Physikalische Chemie, Universität Graz, Austria.
Schwarz
E
E
Tsfadia
Y
Y
Daniel
E
E
D000818:Animals; D033364:Decapoda; D006454:Hemoglobins / Q000737:chemistry*; D046911:Macromolecular Substances; D008961:Models, Structural; D011487:Protein Conformation; D014961:X-Ray Diffraction / Q000379:methods
D006454:Hemoglobins; D046911:Macromolecular Substances; C064665:erythrocruorin