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    GUN4, a regulator of chlorophyll synthesis and intracellular signaling (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-02-08
    Description: Nuclear genes control plastid differentiation in response to developmental signals, environmental signals, and retrograde signals from plastids themselves. In return, plastids emit signals that are essential for proper expression of many nuclear photosynthetic genes. Accumulation of magnesium-protoporphyrin IX (Mg-Proto), an intermediate in chlorophyll biosynthesis, is a plastid signal that represses nuclear transcription through a signaling pathway that, in Arabidopsis, requires the GUN4 gene. GUN4 binds the product and substrate of Mg- chelatase, an enzyme that produces Mg-Proto, and activates Mg-chelatase. Thus, GUN4 participates in plastid-to-nucleus signaling by regulating Mg-Proto synthesis or trafficking.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Larkin, Robert M -- Alonso, Jose M -- Ecker, Joseph R -- Chory, Joanne -- New York, N.Y. -- Science. 2003 Feb 7;299(5608):902-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12574634" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Arabidopsis/*genetics/growth & development/metabolism ; Arabidopsis Proteins/chemistry/*genetics/isolation & purification/*metabolism ; Carrier Proteins/chemistry/*genetics/isolation & purification/*metabolism ; Cell Nucleus/metabolism ; Chlorophyll/*biosynthesis ; Chloroplasts/*metabolism ; Chromosome Mapping ; Chromosomes, Plant ; Cloning, Molecular ; Cyanobacteria/enzymology/genetics/metabolism ; Deuteroporphyrins/metabolism ; Enzyme Activation ; *Genes, Plant ; Genes, Reporter ; *Intracellular Signaling Peptides and Proteins ; Lyases/chemistry/isolation & purification/metabolism ; Magnesium/metabolism ; Molecular Sequence Data ; Mutation ; Mutation, Missense ; Protein Binding ; Protein Subunits/metabolism ; Protein Transport ; Protoporphyrins/*metabolism ; Recombinant Proteins/metabolism ; *Signal Transduction ; Thylakoids/chemistry/enzymology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    A role for peroxisomes in photomorphogenesis and development of Arabidopsis (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-20
    Description: The nuclear protein DET1 is a central repressor of photomorphogenesis in plants. We have identified the molecular lesion in ted3, a mutation that dominantly suppresses the phenotypes of det1-1. TED3 encodes a peroxisomal protein (AtPex2p) essential for Arabidopsis growth. Developmental defects and the abnormal expression of many genes in det1 are rescued by ted3. ted3 also partially suppresses another pleiotropic de-etiolated mutant cop1. Thus, peroxisomes, whose functions are still largely unexplored, play a key role in a photomorphogenetic pathway negatively regulated by the DET1 and COP proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, Jianping -- Aguirre, Maria -- Peto, Charles -- Alonso, Jose -- Ecker, Joseph -- Chory, Joanne -- New York, N.Y. -- Science. 2002 Jul 19;297(5580):405-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Plant Biology Laboratory, Howard Hughes Medical Institute, Laboratory of Neuronal Structure and Function, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12130786" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Arabidopsis/genetics/*growth & development/physiology ; Arabidopsis Proteins/analysis/chemistry/*genetics/*physiology ; Carrier Proteins/genetics/physiology ; Crosses, Genetic ; Darkness ; Gene Expression Profiling ; Gene Expression Regulation, Plant ; Genes, Plant ; Genes, Suppressor ; Hypocotyl/growth & development ; Indoles/metabolism ; Light ; Membrane Proteins ; Molecular Sequence Data ; Morphogenesis ; Mutation ; Nuclear Proteins/genetics/*physiology ; Peroxisomes/chemistry/*physiology ; Plant Roots/growth & development ; Plants, Genetically Modified ; Recombinant Fusion Proteins ; Transformation, Genetic ; *Ubiquitin-Protein Ligases
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
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