Galactolipid Synthesis in Vicia faba Leaves: III. Site(s) of Galactosyl Transferase Activity 1
AUTOR(ES)
Williams, John P.
RESUMO
Leaves of Vicia faba were fed 14CO2 in light for periods of up to 6 hours. At intervals, leaf samples were homogenized and separated into fractions which contained “broken” and “intact” chloroplasts, and three other high speed centrifugal fractions containing other cell membranes and chloroplast envelopes. Analyses of the radioactive labeling of galactose from the galactolipids in these fractions and in purified chloroplast envelopes indicated that the major site of galactosyl transferase enzyme activity was in the chloroplast envelope. The data suggest that in time much of the radioactive galactolipid was transferred from the envelope to the thylakoid-containing fractions. The major site of galactolipid synthesis appears to be in the envelope but there is some evidence of another site in the thylakoids.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=542892Documentos Relacionados
- Galactolipid Synthesis in Vicia faba Leaves: IV. Site(s) of Fatty Acid Incorporation into the Major Glycerolipids 1
- Galactolipid Synthesis in Vicia faba Leaves: I. Galactose, Glycerol, and Fatty Acid Labeling after 14CO2 Feeding 1
- Galactolipid Synthesis in Vicia faba Leaves: II. Formation and Desaturation of Long Chain Fatty Acids in Phosphatidylcholine, Phosphatidylglycerol, and the Galactolipids 1
- Cutin Biosynthesis in Vicia faba Leaves: Effect of Age 1
- Attachment site(s) of retinal in bacteriorhodopsin.
