1981
DOI: 10.1017/s0022029900021725
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Electrofocusing and two-dimensional electrophoresis of bovine caseins

Abstract: The main components of bovine whole casein were characterized by electrofocusing; pi values of a s r , /?-, K-, y r , y 2 -and y 3 -caseins were determined. A further identification of casein components was achieved by a 2-dimensional electrophoresis study. 2-Dimensional patterns of y-caseins obtained from a hydrolysate of yS-cascin by bovine plasmin are in good agreement with those of y-caseins naturally present in whole casein.

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Cited by 77 publications
(34 citation statements)
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“…Sorne bands with lower molecular masses were present in fraction 4 issued from ion exchange chromatography, possibly resulting from a degradation. The determination of the molecular masses of strongly hydrophilic or hydrophobie proteins results sometimes in under-or overestimated values (Trieu-Cuot and Gripon, 1981;Creamer and Richardson, 1984). Bovine caseins contain strongly hydrophilic (such as the N-terminal domain of~-casein, as weIl as 8-12, 56-63, 129-199 residues of a s2 -casein) and hydrophobie…”
Section: R-e-l-e-e-l-n-v-p-g-e-i-v-e-s-l-s-s-s-e-e-s-i-t-r-e-q-e-e-l-mentioning
confidence: 99%
“…Sorne bands with lower molecular masses were present in fraction 4 issued from ion exchange chromatography, possibly resulting from a degradation. The determination of the molecular masses of strongly hydrophilic or hydrophobie proteins results sometimes in under-or overestimated values (Trieu-Cuot and Gripon, 1981;Creamer and Richardson, 1984). Bovine caseins contain strongly hydrophilic (such as the N-terminal domain of~-casein, as weIl as 8-12, 56-63, 129-199 residues of a s2 -casein) and hydrophobie…”
Section: R-e-l-e-e-l-n-v-p-g-e-i-v-e-s-l-s-s-s-e-e-s-i-t-r-e-q-e-e-l-mentioning
confidence: 99%
“…Porcine Hydrolysis of a-lactalbumin by gastric proteinases~as performed at 37 oC with an È/S ratio of1 /2{500 (w/w) and stopped by adjusting the pH Vil to '9.0 with NH 4 0H. Hydrolysis of the protein was verified by SD&-gradient polyacrylamide gel electrophoresis (SDs-GPGE) (Trieu-Cuot and Gripon, 1981). The kinetics of disappearance of the protein were checked on a FPLC system (Pharmacia, Uppsala, Sweden) by anion exchange chromatography on a Mono Q column (Pharmacia, Uppsala, Sweden).…”
Section: Gastric Proteinasesmentioning
confidence: 99%
“…En milieu non dissociant (PAGE-native), la méthode de Hillier (1976) Sanogo et al (1990) en utilisant un gel (T : 5%; C : 3%) contenant de l'urée 7 mol.l-1 et des Pharmalytes (LKB) 2,4% (vlv) couvrant chacun une zone de pH : 2,5-5, 4-6 et 3-10. L'électrophorèse bidimensionnelle couplant la FIE et la PAGE-SOS a été conduite selon la technique préconisée par Trieu-Cuot et Gripon (1981). La révélation des protéines est réalisée avec le Bleu de Coomassie R250 (Serva Fine Biochemicals), 0,1% (plv) en solution dans un mélange de méthanol (50%, vlv) et d'acide trichloracétique (TCA 12%, plv).…”
Section: Méthodes éLectrophorétiquesunclassified