3 Ergebnisse
17:08
14Hedrich, Rainer et al.Potassium transport proteins, so called potassium-channels, represent essential elements in the control of stomatal aperture. The performance of these microvalves and the related influence on the gas exchange in plants is illustrated by 3D-animations. A major part of the video focusses on the patch-clamp technique, a method, developed to record the activity of a single ion-channel molecule in vivo and in real time. The set up for high-resolution current recordings is introduced, an experiment is carried out and analysed. Stomatal movement and for the first time the formation of guard cell protoplasts are monitored using time-lapse cinemicrography.
Schlagwörter: ..., K-Transport proteins, ...
1998IWF (Göttingen)
20:31
2Hedrich, Rainer et al.The molecular 3-dimensional structure of a potassium channel protein is resolved following protein purification, crystallization and X-ray analysis. For the first time the growth of protein crystals is visualized. The region responsible for potassium selectivity is depicted in a 3D reconstruction of the channel protein and the underlying molecular mechanism of potassium transport is explained.
Schlagwörter: ..., k-transport proteins, ...
2000IWF (Göttingen)
24:08
1Hedrich, Rainer et al.The molecular strategies which have led to the identification of the first ion-channel gene in plants are presented. The genetic blue-print of the guard cell potassium channel protein is unravelled by the use of modern molecular biology techniques.
Schlagwörter: ..., k-transport proteins, ...
2000IWF (Göttingen)
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