Olivier Vallon

The Chlamydomonas Genome Reveals the Evolution of Key Animal and Plant Functions (2007)

Merchant, Sabeeha S., Prochnik, Simon E., Vallon, Olivier, Harris, Elizabeth H., Karpowicz, Steven J., Witman, George B., ...

Chlamydomonas reinhardtii is a unicellular green alga whose lineage diverged from land plants over 1 billion years ago. It is a model system for studying chloroplast-based photosynthesis, as well as...

The Chlamydomonas Genome Reveals the Evolution of Key Animal and Plant Functions (2007)

Merchant, Sabeeha S., Prochnik, Simon E., Vallon, Olivier, Harris, Elizabeth H., Karpowicz, Steven J., Witman, George B., ...

Chlamydomonas reinhardtii is a unicellular green alga whose lineage diverged from land plants over 1 billion years ago. It is a model system for studying chloroplast-based photosynthesis, as well as...

The Chlamydomonas genome reveals the evolution of key animal and plant functions. (2007)

Merchant, Sabeeha S., Prochnik, Simon E., Vallon, Olivier, Harris, Elizabeth H., Karpowicz, Steven J., Witman, George B., ...

Chlamydomonas reinhardtii is a unicellular green alga whose lineage diverged from land plants over 1 billion years ago. It is a model system for studying chloroplast-based photosynthesis, as well as...

The Chlamydomonas genome reveals the evolution of key animal and plant functions (2007)

Merchant, Sabeeha S., Prochnik, Simon E, Willows, Robert D, Vallon, Olivier, Harris, Elizabeth H, Karpowicz, Steven J, ...

Chlamydomonas reinhardtii is a unicellular green alga whose lineage diverged from land plants over 1 billion years ago. It is a model system for studying chloroplast- based photosynthesis, as well as...

EST assembly supported by a draft genome sequence: an analysis of the Chlamydomonas reinhardtii transcriptome (2007)

Jain, Monica, Shrager, Jeff, Harris, Elizabeth E., Halbrook, Renee, Grossman, Arthur R., Hauser, Charles, ...

Clustering and assembly of expressed sequence tags (ESTs) constitute the basis for most genomewide descriptions of a transcriptome. This approach is limited by the decline in sequence quality toward...

Chloroplast and Mitochondrial Proteases in Arabidopsis. A Proposed Nomenclature1

Adam, Zach, Adamska, Iwona, Nakabayashi, Kazumi, Ostersetzer, Oren, Haussuhl, Kirsten, Manuell, Andrea, ...

The identity and scope of chloroplast and mitochondrial proteases in higher plants has only started to become apparent in recent years. Biochemical and molecular studies suggested the existence of...

The Light Sensitivity of ATP Synthase Mutants of Chlamydomonas reinhardtii1

Majeran, Wojciech, Olive, Jacqueline, Drapier, Dominique, Vallon, Olivier, Wollman, Francis-André

Chlamydomonas reinhardtii mutants defective in the chloroplast ATP synthase are highly sensitive to light. The ac46 mutant is affected in the MDH1 gene, required for production or stability of the...

The Chloroplastic GrpE Homolog of Chlamydomonas: Two Isoforms Generated by Differential Splicing

Schroda, Michael, Vallon, Olivier, Whitelegge, Julian P., Beck, Christoph F., Wollman, Francis-André

In eubacteria and mitochondria, Hsp70 chaperone activity is controlled by the nucleotide exchange factor GrpE. We have identified the chloroplastic GrpE homolog of Chlamydomonas, CGE1, as an ∼26-kD...

Control of protein life-span by N-terminal methionine excision

Giglione, Carmela, Vallon, Olivier, Meinnel, Thierry

Peptide deformylases (PDFs) have been discovered recently in eukaryotic genomes, and it appears that N-terminal methionine excision (NME) is a conserved pathway in all compartments where protein...

Evidence for a Role of ClpP in the Degradation of the Chloroplast Cytochrome b6f Complex

Majeran, Wojciech, Wollman, Françis-André, Vallon, Olivier

In the green alga Chlamydomonas reinhardtii, the ClpP protease is encoded by an essential chloroplast gene. Mutating its AUG translation initiation codon to AUU reduced ClpP accumulation to 25 to 45%...

Insights into the Survival of Chlamydomonas reinhardtii during Sulfur Starvation Based on Microarray Analysis of Gene Expression† ‡

Zhang, Zhaoduo, Shrager, Jeff, Jain, Monica, Chang, Chiung-Wen, Vallon, Olivier, Grossman, Arthur R.

Responses of photosynthetic organisms to sulfur starvation include (i) increasing the capacity of the cell for transporting and/or assimilating exogenous sulfate, (ii) restructuring cellular features...

Chloroplast and Mitochondrial Proteases in Arabidopsis. A Proposed Nomenclature1

Adam, Zach, Adamska, Iwona, Nakabayashi, Kazumi, Ostersetzer, Oren, Haussuhl, Kirsten, Manuell, Andrea, ...

The identity and scope of chloroplast and mitochondrial proteases in higher plants has only started to become apparent in recent years. Biochemical and molecular studies suggested the existence of...

The Light Sensitivity of ATP Synthase Mutants of Chlamydomonas reinhardtii1

Majeran, Wojciech, Olive, Jacqueline, Drapier, Dominique, Vallon, Olivier, Wollman, Francis-André

Chlamydomonas reinhardtii mutants defective in the chloroplast ATP synthase are highly sensitive to light. The ac46 mutant is affected in the MDH1 gene, required for production or stability of the...

The Chloroplastic GrpE Homolog of Chlamydomonas: Two Isoforms Generated by Differential Splicing

Schroda, Michael, Vallon, Olivier, Whitelegge, Julian P., Beck, Christoph F., Wollman, Francis-André

In eubacteria and mitochondria, Hsp70 chaperone activity is controlled by the nucleotide exchange factor GrpE. We have identified the chloroplastic GrpE homolog of Chlamydomonas, CGE1, as an ∼26-kD...

Control of protein life-span by N-terminal methionine excision

Giglione, Carmela, Vallon, Olivier, Meinnel, Thierry

Peptide deformylases (PDFs) have been discovered recently in eukaryotic genomes, and it appears that N-terminal methionine excision (NME) is a conserved pathway in all compartments where protein...

Evidence for a Role of ClpP in the Degradation of the Chloroplast Cytochrome b6f Complex

Majeran, Wojciech, Wollman, Françis-André, Vallon, Olivier

In the green alga Chlamydomonas reinhardtii, the ClpP protease is encoded by an essential chloroplast gene. Mutating its AUG translation initiation codon to AUU reduced ClpP accumulation to 25 to 45%...

Insights into the Survival of Chlamydomonas reinhardtii during Sulfur Starvation Based on Microarray Analysis of Gene Expression† ‡

Zhang, Zhaoduo, Shrager, Jeff, Jain, Monica, Chang, Chiung-Wen, Vallon, Olivier, Grossman, Arthur R.

Responses of photosynthetic organisms to sulfur starvation include (i) increasing the capacity of the cell for transporting and/or assimilating exogenous sulfate, (ii) restructuring cellular features...

EST assembly supported by a draft genome sequence: an analysis of the Chlamydomonas reinhardtii transcriptome

Jain, Monica, Shrager, Jeff, Harris, Elizabeth H., Halbrook, Renee, Grossman, Arthur R., Hauser, Charles, ...

Clustering and assembly of expressed sequence tags (ESTs) constitute the basis for most genomewide descriptions of a transcriptome. This approach is limited by the decline in sequence quality toward...

Defects in the Cytochrome b6/f Complex Prevent Light-Induced Expression of Nuclear Genes Involved in Chlorophyll Biosynthesis1

Shao, Ning, Vallon, Olivier, Dent, Rachel, Niyogi, Krishna K., Beck, Christoph F.

Mutants with defects in the cytochrome (cyt) b6/f complex were analyzed for their effect on the expression of a subgroup of nuclear genes encoding plastid-localized enzymes participating in...

The tiny eukaryote Ostreococcus provides genomic insights into the paradox of plankton speciation

Palenik, Brian, Grimwood, Jane, Aerts, Andrea, Rouzé, Pierre, Salamov, Asaf, Putnam, Nicholas, ...

The smallest known eukaryotes, at ≈1-μm diameter, are Ostreococcus tauri and related species of marine phytoplankton. The genome of Ostreococcus lucimarinus has been completed and compared with...

Genomewide Analysis of Box C/D and Box H/ACA snoRNAs in Chlamydomonas reinhardtii Reveals an Extensive Organization Into Intronic Gene Clusters

Chen, Chun-Long, Chen, Chong-Jian, Vallon, Olivier, Huang, Zhan-Peng, Zhou, Hui, Qu, Liang-Hu

Chlamydomonas reinhardtii is a unicellular green alga, the lineage of which diverged from that of land plants >1 billion years ago. Using the powerful small nucleolar RNA (snoRNA) mining platform to...

Intertwined translational regulations set uneven stoichiometry of chloroplast ATP synthase subunits

Drapier, Dominique, Rimbault, Blandine, Vallon, Olivier, Wollman, Francis-André, Choquet, Yves

The (C)F1 sector from H+-ATP synthases comprises five subunits: α, β, γ, δ and ɛ, assembled in a 3:3:1:1:1 stoichiometry. Here, we describe the molecular mechanism ensuring this unique...