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Two-dimensional Gel Analysis of Proteins from Mouse Fetuses with Trisomy 19 after DEAE-Sepharose Chromatography

Published online by Cambridge University Press:  14 April 2009

Gerd H. Reichert
Gerd H. Reichert
Affiliation:
Institut für Humangenetik, Universität des Saarlandes, D-6650 Homburg-3, German Federal Republic

Summary

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Isoelectrofocusing two-dimensional polyacrylamide gel electrophoresis (IEF-2D-PAGE) offers the opportunity to detect typical alterations in the protein pattern of trisomic mouse foetuses at a given time of development. The fractionation of the cell lysate by differential centrifugation into various subcellular components (nuclei, membranes, polyribosomes, cytoplasmic proteins) and fractionation of the proteins through DEAE-Sepharose chromatography allows detection of protein differences.

It is possible to detect eight differences in the protein patterns between trisomy 19 (Ts 19) mouse foetuses and euploid mouse fetuses at day 15. Five of these differences are quantitative in nature, three are qualitative. One of these proteins is synthesized in Ts 19 foetuses at a higher level than in euploid mouse fetuses (primary gene dosage effect). The other seven proteins are reduced or not present in trisomic foetuses (consequences of primary gene dosage effects).

The molecular mass of the individual proteins ranges from 13 to 41 kDa.

Type
Research Article
Information
Genetics Research , Volume 47 , Issue 3 , June 1986 , pp. 193 - 197
Copyright
Copyright © Cambridge University Press 1986

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