Determination of molecular weight and related hydrodynamic parameters of high molecular weight protein fraction from a few oilseeds.
Indian J Biochem Biophys
;
1990 Oct; 27(5): 295-9
Article
Dans Anglais
| IMSEAR
| ID: sea-28977
ABSTRACT
The hydrodynamic parameters of the major protein fraction, viz. arachin from groundnut, alpha-globulin from sesame seed, brassin (M) from mustard seed and helianthinin from sunflower seed, have been determined in a single solvent system (0.05 M Tris-HCl buffer, pH 7.5 containing 0.5 M sodium chloride) sedimentation coefficient (s0(20,w)) and diffusion coefficient (D0(20,w)) by analytical ultracentrifugation, intrinsic viscosity [eta] by Ostwald viscometry and partial specific volume (V) by densimetry. The molecular weights (M) of the four proteins, calculated using the sedimentation-viscosity and sedimentation-diffusion coefficient methods, were found close to each other. The values have been compared with those in the literature and the reasons for discrepancies have been discussed.
Texte intégral:
Disponible
Indice:
IMSEAR (Asie du Sud-Est)
Sujet Principal:
Protéines végétales
/
Graines
/
Chimie physique
/
Phénomènes chimiques
/
Masse moléculaire
langue:
Anglais
Texte intégral:
Indian J Biochem Biophys
Année:
1990
Type:
Article
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