Protein import into chloroplasts.
Protein import into chloroplasts is a highly regulated process. The activity of the major import receptors is regulated by protein phosphorylation, as well as by GTP binding and hydrolysis. Complete translocation into the organelle could depend on its redox status, as sensed by the Tic complex. A further possibility is that, upon phosphorylation, precursor proteins form a highly import-competent guidance complex in the cytosol. Hence, several levels of regulation seem to coexist.
Soll
Jürgen
J
Department für Biologie I, Botanik, Ludwig-Maximilians-Universität München, Menzingerstrasse 67, D-80638, München, Germany. soll@uni-muenchen.de
D048948:14-3-3 Proteins; D029681:Arabidopsis Proteins / Q000378:metabolism; D001692:Biological Transport / Q000502:physiology; D002135:Calcium-Binding Proteins / Q000378:metabolism; D002736:Chloroplasts / Q000502:physiology*; D020558:GTP Phosphohydrolases / Q000378:metabolism; D018840:HSP70 Heat-Shock Proteins / Q000378:metabolism; D008562:Membrane Glycoproteins; D008565:Membrane Proteins / Q000378:metabolism; D026901:Membrane Transport Proteins / Q000378:metabolism; D045322:Photosynthetic Reaction Center Complex Proteins / Q000378:metabolism; D010940:Plant Proteins / Q000378:metabolism*; D021381:Protein Transport / Q000502:physiology*; D018160:Receptors, Cytoplasmic and Nuclear / Q000378:metabolism; D018000:Receptors, Peptide / Q000378:metabolism; D012273:Ribulose-Bisphosphate Carboxylase / Q000378:metabolism; D014446:Tyrosine 3-Monooxygenase / Q000378:metabolism
D048948:14-3-3 Proteins; D029681:Arabidopsis Proteins; D002135:Calcium-Binding Proteins; D018840:HSP70 Heat-Shock Proteins; D008562:Membrane Glycoproteins; D008565:Membrane Proteins; D026901:Membrane Transport Proteins; C445093:Oep7 protein, Arabidopsis; D045322:Photosynthetic Reaction Center Complex Proteins; D010940:Plant Proteins; D018160:Receptors, Cytoplasmic and Nuclear; D018000:Receptors, Peptide; C403444:TOC159 protein, Arabidopsis; C491798:TOC34 protein, Arabidopsis; C499578:Tic110 protein, Arabidopsis; C457764:Tic20 protein, Arabidopsis; C112475:Toc34 protein, plant; C066973:signal sequence receptor; C077957:OM14 protein, Pisum sativum; D014446:Tyrosine 3-Monooxygenase; D020558:GTP Phosphohydrolases; D012273:Ribulose-Bisphosphate Carboxylase