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Hydrogen ion equilibria of alpha-globulin from Sesamum indicum L.

Prakash, V. and Narasinga Rao, M. S. (1990) Hydrogen ion equilibria of alpha-globulin from Sesamum indicum L. Journal of Agricultural and Food Chemistry, 38 (3). 612-615, 18 ref..

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Abstract

The hydrogen ion equilibrium of the high mol. wt. protein alpha-globulin of sesame seed was investigated in the pH range 2.0-12.0. Analysis of the data gave pKint values of 4.37, 7.47 and 9.60 for carboxyl, imidazole and epsilon-amino groups, resp. The number of residues containing these groups agreed well with values obtained from amino acid analysis. Tyrosyl phenolic groups had a pKint of 9.41 as determined from spectrophotometric titration. The value of the electrostatic interaction parameter, w, varied with pH, and this is discussed in relation to the hydrodynamic properties of the protein.

Item Type: Article
Uncontrolled Keywords: GASES-; GLOBULINS-; OILSEEDS-; PROTEINS-; SEEDS-; SESAME-SEEDS; H2-; SESAME-
Subjects: 500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 29 Protein Chemistry
600 Technology > 08 Food technology > 19 Lipids-oils/fats > 01 Oilseeds
Divisions: Protein Chemistry and Technology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 19 Jun 2009 04:07
Last Modified: 28 Dec 2011 09:53
URI: http://ir.cftri.com/id/eprint/6390

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