The presence and photoregulation of protochlorophyllide reductase in green tissues |
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Authors: | W. Trevor Griffiths Steve A. Kay Richard P. Oliver |
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Affiliation: | (1) Department of Biochemistry, University of Bristol, BS8 1TD Bristol, U.K.;(2) Carlsberg Research Laboratory, Gl. Carlsbergvej 10, 2500 Valby, Copenhagen, Denmark |
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Abstract: | Summary The enzyme protochlorophyllide (pchlide) reductase has been identified amongst the peptides, resolved by sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE), of chloroplast membranes from oat and barley plants. In support of this identification the enzymic activity associated with the enzyme has also been measured in the same preparations. A higher level of enzyme was found in plants which had been darkened prior to extraction. Based on this data, mechanisms for the light regulated diurnal variation of the reductase are discussed. |
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Keywords: | protochlorophyllide reductase regulation greening chloroplasts |
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