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Plant Physiology 59:941-947 (1977)
© 1977 American Society of Plant Biologists

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Articles

Characterization of a Membrane Fraction Containing a b-type Cytochrome 1,2

Algirdas J. Jesaitisa,3, Patricia R. Henersa and Rainer Hertela

Winslow R. Briggsb

a Institut für Biologie III, Freiburg i. Br., West Germany, Department of Plant Biology, Carnegie Institution of Washington, Stanford, California 94305

The various components obtained from etiolated corn (Zea mays L.) coleoptiles were fractionated by differential or sucrose gradient centrifugation. The endoplasmic reticulum, proplastids, Golgi, and mitochondria were localized by enzymic or other markers in the various fractions. A fifth fraction was also characterized. It contains glucan synthetase II activity, binding sites for N-naphthylphthalamic acid, NADH dehydrogenase activity which is both antimycin A- and cyanide-insensitive, and a b-type cytochrome. It is possible that this fraction is plasma membrane and that it may contain the blue-ultraviolet photoreceptor for phototropism in corn.

3 Present address: Dept. of Biology, University of California at San Diego, La Jolla, Calif.

1 These studies were supported by the Deutsche Forschungsgemeinschaft (SFB46), a fellowship to A. J. J. from the European Molecular Biology Organization (EMBO), and a fellowship to W. R. B. from the John Simon Guggenheim Foundation. The authors are very grateful for this aid.

2 CIW - DPB Publication No. 575.




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H. Bernhard Teicher and H. Vibe Scheller
The NAD(P)H Dehydrogenase in Barley Thylakoids Is Photoactivatable and Uses NADPH as well as NADH
Plant Physiology, June 1, 1998; 117(2): 525 - 532.
[Abstract] [Full Text]


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Copyright © 1977 by the American Society of Plant Biologists