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 nm 3. A model...

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Veröffentlicht in:	International journal of biological macromolecules 1991-08, Vol.13 (4), p.222-224
Hauptverfasser:	Pilz, Ingrid, Schwarz, Erika, Tsfadia, Yossi, Daniel, Ezra
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis of complex biological substances Analytical, structural and metabolic biochemistry Animals Biological and medical sciences Decapoda (Crustacea) erythrocruorin Fundamental and applied biological sciences. Psychology Hemoglobins - chemistry Macromolecular Substances Models, Structural Protein Conformation quaternary structure Small-angle X-ray scattering X-Ray Diffraction - methods
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Zusammenfassung:	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 nm 3. 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.
ISSN:	0141-8130 1879-0003
DOI:	10.1016/0141-8130(91)90076-7