Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 59-66 |
| Seitenumfang | 8 |
| Fachzeitschrift | Indian Journal of Biochemistry and Biophysics |
| Jahrgang | 37 |
| Ausgabenummer | 1 |
| Publikationsstatus | Veröffentlicht - Feb. 2000 |
Abstract
Purification of mitochondria and mitochondrial protein complexes from green tissues is often severely impaired by the presence of chloroplasts and their proteins. Here we present a method which allows analysis of respiratory protein complexes from potato leaves. The procedure includes the preparation of an organellar fraction specifically enriched in mitochondria and the separation of organellar protein complexes by blue-native polyacrylamide gel electrophoresis (BN-PAGE). For the first time mitochondrial and chloroplast protein complexes have been resolved simultaneously in a native gel. BN-PAGE allowed the separation of eleven bands, including the mitochondrial NADH-dehydrogenase, the bc1 complex and the mitochondrial F1-ATP synthase as well as the chloroplast F1-ATP synthase, the cytochrome b6f complex, the two photosystems and the light harvesting complex. The resolution of the protein complexes in the first dimension was good enough to allow identification of all subunits of individual complexes in the second dimension under denaturing conditions. Thus, BN-PAGE offers an opportunity to analyze mitochondrial and chloroplast protein complexes from a single preparation from very small amounts of tissue. The implications of our findings, for studies on protein expression and turnover in different tissues and developmental stages, are discussed.
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in: Indian Journal of Biochemistry and Biophysics, Jahrgang 37, Nr. 1, 02.2000, S. 59-66.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Resolution of mitochondrial and chloroplast membrane protein complexes from green leaves of potato on blue-native polyacrylamide gels
AU - Singh, Prikhshayat
AU - Jänsch, Lothar
AU - Braun, Hans-Peter
AU - Schmitz, Udo
PY - 2000/2
Y1 - 2000/2
N2 - Purification of mitochondria and mitochondrial protein complexes from green tissues is often severely impaired by the presence of chloroplasts and their proteins. Here we present a method which allows analysis of respiratory protein complexes from potato leaves. The procedure includes the preparation of an organellar fraction specifically enriched in mitochondria and the separation of organellar protein complexes by blue-native polyacrylamide gel electrophoresis (BN-PAGE). For the first time mitochondrial and chloroplast protein complexes have been resolved simultaneously in a native gel. BN-PAGE allowed the separation of eleven bands, including the mitochondrial NADH-dehydrogenase, the bc1 complex and the mitochondrial F1-ATP synthase as well as the chloroplast F1-ATP synthase, the cytochrome b6f complex, the two photosystems and the light harvesting complex. The resolution of the protein complexes in the first dimension was good enough to allow identification of all subunits of individual complexes in the second dimension under denaturing conditions. Thus, BN-PAGE offers an opportunity to analyze mitochondrial and chloroplast protein complexes from a single preparation from very small amounts of tissue. The implications of our findings, for studies on protein expression and turnover in different tissues and developmental stages, are discussed.
AB - Purification of mitochondria and mitochondrial protein complexes from green tissues is often severely impaired by the presence of chloroplasts and their proteins. Here we present a method which allows analysis of respiratory protein complexes from potato leaves. The procedure includes the preparation of an organellar fraction specifically enriched in mitochondria and the separation of organellar protein complexes by blue-native polyacrylamide gel electrophoresis (BN-PAGE). For the first time mitochondrial and chloroplast protein complexes have been resolved simultaneously in a native gel. BN-PAGE allowed the separation of eleven bands, including the mitochondrial NADH-dehydrogenase, the bc1 complex and the mitochondrial F1-ATP synthase as well as the chloroplast F1-ATP synthase, the cytochrome b6f complex, the two photosystems and the light harvesting complex. The resolution of the protein complexes in the first dimension was good enough to allow identification of all subunits of individual complexes in the second dimension under denaturing conditions. Thus, BN-PAGE offers an opportunity to analyze mitochondrial and chloroplast protein complexes from a single preparation from very small amounts of tissue. The implications of our findings, for studies on protein expression and turnover in different tissues and developmental stages, are discussed.
UR - http://www.scopus.com/inward/record.url?scp=0034137799&partnerID=8YFLogxK
M3 - Article
C2 - 10983414
AN - SCOPUS:0034137799
VL - 37
SP - 59
EP - 66
JO - Indian Journal of Biochemistry and Biophysics
JF - Indian Journal of Biochemistry and Biophysics
SN - 0301-1208
IS - 1
ER -