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  • 1
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: Online-Ressource (20 S., 206 KB)
    Language: English
    Note: Förderkennzeichen BMBF 0315265C [richtig] - 0315453 [falsch]. - Verbund-Nr. 01063751. - Dt. Berichtsbl. u.d.T.: Bio-H2-Produktion in Mikroalgen: Von der Systembiologie zur angewandten Sonnenenergieumwandlung , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Systemvoraussetzungen: Acrobat reader. , Text engl.
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  • 2
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: Online-Ressource (11 S., 692 KB) , graph. Darst.
    Language: English , English
    Note: Förderkennzeichen BMBF 0315453. - Verbund-Nr. 01070194 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Systemvoraussetzungen: Acrobat reader. , Text in engl. - mit engl. Zsfassung
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  • 3
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Chlamydomonas-Molecular aspects. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (283 pages)
    Edition: 1st ed.
    ISBN: 9783319663654
    Series Statement: Microbiology Monographs ; v.30
    DDC: 572.829832
    Language: English
    Note: Intro -- Contents -- Genomics and Functional Genomics in Chlamydomonas reinhardtii -- 1 Introduction -- 1.1 What Is Functional Genomics? -- 1.2 What Is Protein Function? -- 1.3 The Functional Annotation Problem -- 1.4 Why Use Functional Genomics? -- 2 Chlamydomonas reinhardtii Genomics -- 2.1 The Status of Protein Function Annotation in Chlamydomonas -- 2.2 The Chlamydomonas Nuclear Genome and Gene Models -- 2.3 Present and Future Directions for the Chlamydomonas Nuclear Genome -- 3 Functional Genomics in Chlamydomonas -- 3.1 Transcriptomics -- 3.2 Proteomics -- 3.3 Phenomics -- 3.4 Other ``Omics´´ Experimental Types -- 3.5 Databases and Resources for Chlamydomonas Genomics and Functional Genomics -- 4 Outlook and Future Directions -- 4.1 Integrative Approaches to Analysis -- 4.2 Comparative Algal Genomics -- References -- Nuclear Transformation and Toolbox Development -- 1 Introduction -- 2 Methods for Nuclear DNA Transformation -- 2.1 Biolistic Transformation -- 2.2 Agitation of Cells in the Presence of DNA and Microparticles -- 2.3 Electroporation -- 3 Recombinant DNA Expression -- 3.1 Promoter Elements -- 3.2 Modulation of Recombinant DNA Expression -- 3.2.1 High-Level Transgene Expression -- 3.2.2 Inducible Transgene Expression -- 3.3 Introns -- 3.4 3′UTRs -- 3.5 G+C Content -- 3.6 Selectable Markers and Reporters -- 3.7 Recombinant Protein Production and Targeting -- 4 Gene Expression Inhibition -- 4.1 Random Mutation Strategies -- 4.1.1 Mutagenesis Via Radiation or Chemicals -- 4.1.2 Insertional Mutagenesis -- 4.2 Targeted Mutation Strategies -- 4.2.1 RNA-Dependent Gene Silencing -- 4.2.2 Direct Gene Disruption -- 5 Customizable Vectors and Expression Strain -- 5.1 Selected Vectors for Diverse Practical Applications -- 5.1.1 pGenD -- 5.1.2 Maa7/X IR (NE-537) -- 5.1.3 pProm-Chlamy (pHsp70A/RbcS2-Chlamy) -- 5.1.4 pChlamiRNA1-3. , 5.1.5 pOptimized (pOpt) -- 5.2 Cell Lines Promoting Nuclear Transgene Expression -- 6 Concluding Remarks and Future Perspectives -- References -- Mitochondrial Bioenergetics Pathways in Chlamydomonas -- 1 Krebs Cycle and Acetate Metabolism -- 2 OXPHOS -- 2.1 Complex I -- 2.2 Complex II -- 2.3 Complex III -- 2.4 Complex IV -- 2.5 ATP Synthase -- 3 Alternative Pathways -- References -- Bioenergetic Pathways in the Chloroplast: Photosynthetic Electron Transfer -- 1 LEF Operation -- 1.1 PSII and PSI -- 1.2 Cyt b6f Complex -- 1.3 Transmembrane Electrochemical Proton Gradient -- 2 LEF Regulation -- 2.1 State Transitions -- 2.2 qE-Dependent NPQ -- 2.3 Photosynthetic Control -- 2.4 Pmf Partitioning -- 3 CEF Operation -- 3.1 NDH-Dependent CEF -- 3.2 FQR-Dependent CEF -- 4 CEF Regulation -- 5 Auxiliary Electron Transport Pathways -- 5.1 Ferredoxins -- 5.2 Chlororespiration -- 5.2.1 Chlororespiratory Enzymes in Light-Driven Electron Transport -- 5.2.2 Potential PTOX Functions in Light-Driven Electron Transfer -- 5.2.3 Carotenoid Biosynthesis -- 5.3 Oxygen Reduction at the Stromal Face of PSI -- 5.3.1 Superoxide Dismutase -- 5.3.2 Ascorbate Peroxidase -- 5.3.3 Peroxiredoxins and Glutathione Peroxidases -- 5.3.4 Flavodiiron Proteins -- 6 Concluding Remarks -- References -- Chlamydomonas: Bioenergetic Pathways-Regulation of Photosynthesis -- 1 Introduction -- 2 State Transitions -- 2.1 Introduction -- 2.2 Reorganization of the PSII Supercomplex During State Transitions -- 2.3 Reorganization of the PSI Supercomplex During State Transitions -- 3 qE Quenching -- 3.1 Introduction -- 3.2 Xanthophylls -- 3.3 qE Effectors -- 3.4 Current Model for the Induction of qE Quenching in C. reinhardtii -- References -- Chlamydomonas: Anoxic Acclimation and Signaling -- 1 Introduction -- 2 The Anaerobic Metabolism of Chlamydomonas -- 2.1 Fermentation Through Pyruvate Formate Lyase. , 2.2 Pyruvate Oxidation by Pyruvate Ferredoxin Oxidoreductase -- 2.3 Fermentation in Chlamydomonas Is Flexible -- 2.4 Anaerobic Survival of Chlamydomonas -- 3 O2-Responsive Gene Expression in Chlamydomonas -- 3.1 Principles of O2 Sensing -- 3.2 Shared Anoxia and Copper-Responsive Gene Expression -- 3.2.1 The Principles of Gene Regulation by CRR1 -- 3.2.2 The Role of Coordinated Cu- and O2-Responsive Gene Expression -- 3.3 Potential Mechanisms of Indirect O2 Sensing in Chlamydomonas -- 3.4 Nitric Oxide as a Second Messenger -- 3.4.1 NO Signaling in Animals and Plants -- 3.4.2 NO Signaling in Chlamydomonas -- 3.4.3 NO Signaling in the Anaerobic Response of Chlamydomonas -- 3.5 Conclusions and Outlook -- References -- Chlamydomonas: Regulation Toward Metal Deficiencies -- 1 Introduction -- 2 Iron Deficiency and Regulation -- 2.1 Iron Nutrition -- 2.2 Iron Assimilation -- 2.3 Intracellular Iron Distribution -- 2.3.1 Photoautotrophic Versus Photoheterotrophic Growth Conditions -- 2.4 Iron Sparing and Recycling -- 2.5 Regulation of Iron-Deficiency Responses -- 3 Copper Deficiency and Regulation -- 3.1 Copper Assimilation and Copper Chaperones -- 3.2 Backup Proteins -- 3.3 Regulation of Copper Homeostasis -- 4 Other Metals -- 4.1 Zinc -- 4.2 Manganese -- 5 Conclusions and Perspective -- References -- Calcium-Dependent Signalling Processes in Chlamydomonas -- 1 Introduction -- 2 Ca2+ Signalling in Flagella Motility -- 2.1 Ca2+-Sensitive Elements Involved in Flagellar Beat -- 2.2 Light-Dependent Signalling Pathways -- 2.3 Other Motile Responses -- 3 Other Ca2+ Signalling Processes Related to Flagella Function -- 3.1 Mating -- 3.2 Gliding -- 3.3 Deflagellation -- 3.4 The Role of Ca2+ in Flagellar Length -- 4 Cytosolic Ca2+ Signalling During Stress Responses -- 5 Ca2+ Signalling and Photosynthesis -- 6 Evolution of the Ca2+ Signalling Toolkit. , 7 Technical Considerations for the Study of Ca2+ Signalling in Chlamydomonas -- 8 Concluding Remarks -- References -- Chlamydomonas: The Eyespot -- 1 Introduction -- 2 Light-Signal Transduction Cascade -- 3 Eyespot Structure and Function -- 4 Plasma Membrane Eyespot Proteins -- 5 Chloroplast Envelope Protein -- 6 Pigment Granule Proteins -- 7 Asymmetric Placement of the Eyespot -- 8 Other Latitude Effectors -- 9 Clustering of Eyespot Loci and Similar Cell Cycle Expression Profiles -- 10 Future Directions -- References.
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  • 4
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Chlamydomonas. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (219 pages)
    Edition: 1st ed.
    ISBN: 9783319663609
    Series Statement: Microbiology Monographs ; v.31
    DDC: 589.47
    Language: English
    Note: Intro -- Contents -- Chlamydomonas Photoreceptors: Cellular Functions and Impact on Physiology -- 1 Introduction -- 2 Cryptochromes -- 3 Phytochromes -- 4 Phototropin -- 5 UVR8 -- 6 Rhodopsins -- 7 Outlook -- References -- Chlamydomonas: Hydrogenase and Hydrogen Production -- 1 Introduction -- 2 Microalgal Hydrogen Metabolism -- 3 The Chlamydomonas reinhardtii Hydrogenase HYDA1 -- 3.1 Hydrogenases -- 3.2 HYDA1 Gene -- 3.3 HYDA1 Structure -- 3.4 Enzyme Maturation -- 3.5 HYDA1 Catalysis -- 3.6 Oxygen Sensitivity -- 4 Photobiological H2 Production in Practice -- 5 Targets for Improved Microalgal H2 Production -- 5.1 Electron Supply to the Hydrogenase -- 5.2 Proton Supply to the Hydrogenase -- 5.3 Oxygen Sensitivity of the Hydrogenase -- 5.4 Indirect Targets -- 6 Conclusion -- References -- Chlamydomonas reinhardtii: Protein Glycosylation and Production of Biopharmaceuticals -- 1 Introduction -- 2 Production of Biopharmaceuticals in Chlamydomonas reinhardtii -- 3 N-Glycosylation Pathway in Chlamydomonas reinhardtii -- 3.1 N-Glycosylation Pathway in Plants and Mammals -- 3.2 N-Glycan Structures in Chlamydomonas reinhardtii -- 3.3 Synthesis of the Oligosaccharide Precursor Within Chlamydomonas reinhardtii Endoplasmic Reticulum -- 3.4 Transfer and Maturation of the N-Glycans Within Chlamydomonas reinhardtii Golgi Apparatus -- 4 O-Glycosylation in Chlamydomonas reinhardtii -- 5 Synthesis and Transport of Glycan Building Bocks -- 5.1 Nucleotide Sugar Biosynthesis -- 5.2 Nucleotide Sugar Transporters -- 6 Concluding Remarks and Future Perspectives -- References -- Chlamydomonas: Cilia and Ciliopathies -- 1 Introduction -- 2 Advantages of Chlamydomonas reinhardtii as a Model Organism for Ciliary Research -- 3 Contributions of Chlamydomonas Research to Our Understanding of Ciliopathies and Basic Biology of Cilia. , 3.1 Motile Cilia-Related Disease and Developmental Disorders and Flagellar Motility Studies in Chlamydomonas -- 3.2 Polycystic Kidney Disease and Hedgehog Signaling, Discovery of Intraflagellar Transport in Chlamydomonas -- 3.3 Bardet-Biedl Syndrome (BBS), Comparative Genomics, and Other Research in Chlamydomonas -- 3.4 Chlamydomonas Research Reveals the Molecular Basis of CEP290, Which Is Involved in Multiple Ciliary Diseases -- 3.5 Possible Connection of Juvenile Epilepsy to Cilia Revealed by Research in Chlamydomonas -- 3.6 Other Researches in Chlamydomonas that Contribute to Our Understanding of Basic Biology of Cilia -- 4 Other Ciliary-Related Diseases or Developmental Disorders -- 4.1 Nephronophthisis -- 4.2 Retinal Degeneration -- 4.3 Hyposmia and Anosmia -- 4.4 Meckel-Gruber Syndrome -- 4.5 Joubert Syndrome -- 4.6 Oral-Facial-Digital Syndrome -- 4.7 Alstrom Syndrome -- 4.8 Senior-Loken Syndrome -- 4.9 Leber Congenital Amaurosis -- 4.10 Cranioectodermal Dysplasia -- 4.11 Jeune Syndrome -- 4.12 Short-Rib Polydactyly Syndrome -- 4.13 Ellis-van Creveld Syndrome -- References -- Chlamydomonas: Intraflagellar Transport -- 1 Introduction -- 2 Components of IFT Particles -- 2.1 Anterograde IFT Motor -- 2.2 Retrograde IFT Motor -- 2.3 IFT Complex -- 3 Assembly of IFT -- 4 Movement of IFT -- 5 The Localization and Structure of IFT -- 5.1 Immunofluorescence Microscopy -- 5.2 Electron Microscopy -- 5.3 Crystal Structure -- 6 The Function of IFT -- 6.1 Function of IFT in Flagella Assembly -- 6.2 Function of IFT in Flagella Disassembly -- 6.3 Function of IFT in Signal Transduction -- 6.4 IFT and Other Flagella Motility -- 7 The Regulation of IFT -- 8 Conclusion Remarks and Future Perspectives -- References -- The Sexual Developmental Program of Chlamydomonas reinhardtii -- 1 Gametogenesis/Sexual Differentiation -- 1.1 The Initiation of Gametogenesis. , 1.1.1 Nitrogen and Gametogenesis -- 1.1.2 Light and Gametogenesis -- 1.2 Sexual Differentiation -- 1.2.1 MID: A Master Regulator of Gametogenesis -- 1.2.2 Activation of Gametes: Agglutinins and Mating Structure -- 2 Mating -- 2.1 Cell-Cell Fusion -- 2.2 Zygote Maturation -- 2.2.1 Gsp1/Gsm1 as the Master Regulator to Initiate Zygote Development -- 2.2.2 Elimination of Gamete-Specific Transcripts/Proteins -- 2.2.3 Uniparental Inheritance of Chloroplast/Mitochondrial DNA -- 2.2.4 Zygospore Formation/Germination -- References -- Thylakoid Ultrastructure: Visualizing the Photosynthetic Machinery -- 1 Introduction -- 1.1 Global Algal Biotechnology Challenges -- 1.2 Solar Interfaces: Toward Structural Designs Inspired by Nature -- 2 Zooming into the Cell: A Brief Historical Perspective -- 2.1 Ultrastructural Studies of Chlamydomonas reinhardtii from 1950 to 1970 -- 2.2 Freeze-Fracture (-Etch) and Immunogold Labeling Studies from 1970 to 1990: 3D Protein Distribution in Membranes -- 2.3 Structures of the Photosynthetic Complexes at Atomic Resolution Revealed by Crystallography since 1990 -- 2.3.1 Crystallographic Techniques Leading to Atomic Resolution -- 2.3.2 Photosystem II and Light-Harvesting Complexes II -- 2.3.3 Photosystem I, Light-Harvesting Complexes I, Its Electron Donor Plastocyanin, and Electron Acceptor Ferredoxin -- 2.3.4 The Cytochrome b6f Complex -- 2.3.5 The ATP Synthase (F-type ATPase) -- 3 Advances in 3D and 4D Imaging -- 3.1 Optical Microscopy -- 3.2 Wide-Field and Confocal Microscopy -- 3.3 Correlative Light and Electron Microscopy (CLEM) -- 3.4 Atomic Force Microscopy (AFM) -- 3.5 Transmission Electron Microscopy (TEM) -- 3.6 Electron Tomography -- 3.7 Single-Particle Analysis (SPA) -- 3.8 EM Tagging and Staining Techniques to Visualize Proteins in Membranes -- 3.8.1 Clonable Tags -- 3.8.2 Non-clonable Tags -- 3.9 3D Atlas Construction. , 4 Toward a 4D Atlas: Modeling Membrane and Protein Dynamics -- 4.1 Dynamic Simulations -- 4.2 Atomistic Molecular Dynamics Simulations of Membrane Proteins -- 4.3 Coarse-Grained Molecular Dynamics Simulations -- 4.4 Concerted Architecture on a Grand Scale -- 5 Conclusion -- References -- Chlamydomonas: Triacylglycerol Accumulation -- 1 Introduction -- 2 Triacylglycerol Accumulation in Chlamydomonas -- 2.1 TAG Synthesis Is Triggered by Exposure to Stressful Growth Conditions -- 2.2 TAG and Starch Are the Main Carbon Sinks in Chlamydomonas -- 2.3 TAG Stems from Both Exogenous and Photosynthetically Fixed Carbon Sources -- 3 TAG Synthesis: A Process Involving the Chloroplast and the ER -- 3.1 TAGs Are De Novo Synthesized or Generated via Membrane Lipid Recycling -- 3.2 TAG Synthesis Requires Lipid Trafficking Across Organellar Membranes -- 4 Regulation: Accumulation and Turnover of TAGs -- 4.1 Transcription Factors Are Key Targets for Understanding TAG Synthesis Regulation -- 4.2 Putative Kinases Are Involved in TAG Accumulation -- 4.3 TAG Remobilization After the Return of Nitrogen Is a Rapid, Regulated Response -- 5 Photosynthesis and TAG Accumulation -- 5.1 Photosynthetic Electron Transport Chain Complexes Are Reduced Under Nitrogen Starvation -- 5.2 TAG Accumulation Acts as Sink for Photosynthetically Generated Reducing Equivalents and Protects Against ROS Damage -- 6 Lipid Droplets: Morphology, Cellular Localization, and TAG Species -- 6.1 Lipid Droplets Contain a Wide Range of Lipid Species -- 6.2 Lipid Droplet Proteome Consists of Structural and Metabolic Proteins -- 6.3 Biogenesis of Lipid Droplets Is an Elusive Process -- 7 Biotechnological Applications and Perspectives -- 7.1 Mutants that Show Increased TAG Accumulation Has Been Identified. , 7.2 Many Mutant Screens Have Been Developed with the Aim of Isolating Strains with Perturbed Lipid Content -- 8 Conclusions -- References.
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  • 5
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 104 (1996), S. 7426-7430 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Overtone spectroscopy in the gas phase by vibrationally assisted dissociation and photofragment ionization (OSVADPI) has been coupled with mass spectrometric detection of fragments enabling us to separate congested spectra into components arising from several naturally occurring isotopomers. The new technique of isotope selective overtone spectroscopy (ISOS) has been applied to the 41 component of the CH chromophore absorption near 11 385 cm−1 in CHCl3 at room temperature and in supersonic jet expansions. These spectra allow us to assign a close local resonance with a CCl3 frame mode indicating vibrational energy redistribution within some ps. This is to be compared with the ultrafast (ca. 50 fs) redistribution between the CH stretching and bending modes established previously. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 116 (2002), S. 6045-6055 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The ν2+2ν3 combination band of 12CH4 near 7510 cm−1 was studied with the recently introduced technique of cavity ring-down spectroscopy employing a cw-diode laser in a pulsed supersonic slit jet expansion and with Doppler-limited Fourier-transform infrared spectroscopy at room temperature. ν2+2ν3 is the strongest absorption band in the high-wave-number region of the N=2.5 icosad of methane. First assignments of the combination band are provided. The vibrational origin of ν2+2ν3 at 7510.3378±0.0010 cm−1, the integrated band strength G=(1.3±0.2)×10−4 pm2 and the vibrational transition moment |μν|=(1.0±0.1)×10−3 D have been determined. The values represent benchmarks to test effective vibrational Hamiltonians and ab initio calculations for methane. Although an isolated band analysis was possible at low J-values, the influence of strong perturbations becomes evident at higher rotational excitation. The F1-component of ν2+2ν3 interacting by a strong Coriolis resonance with the IR-active F2-component appears to be a dominant perturber. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    Publication Date: 2019-09-23
    Description: ABSTRACT: BACKGROUND: Biogeochemical elemental cycling is driven by primary production of biomass via phototrophic phytoplankton growth, with 40% of marine productivity being assigned to diatoms. Phytoplankton growth is widely limited by the availability of iron, an essential component of the photosynthetic apparatus. The oceanic diatom Thalassiosira oceanica shows a remarkable tolerance to low-iron conditions and was chosen as a model for deciphering the cellular response upon shortage of this essential micronutrient. RESULTS: The combined efforts in genomics, transcriptomics and proteomics reveal an unexpected metabolic flexibility in response to iron availability for T. oceanica CCMP1005. The complex response comprises cellular retrenchment as well as remodeling of bioenergetic pathways, where the abundance of iron-rich photosynthetic proteins is lowered, whereas iron-rich mitochondrial proteins are preserved. As a consequence of iron deprivation, the photosynthetic machinery undergoes a remodeling to adjust the light energy utilization with the overall decrease in photosynthetic electron transfer complexes. CONCLUSIONS: Beneficial adaptations to low-iron environments include strategies to lower the cellular iron requirements and to enhance iron uptake. A novel contribution enhancing iron economy of phototrophic growth is observed with the iron-regulated substitution of three metal-containing fructose-bisphosphate aldolases involved in metabolic conversion of carbohydrates for enzymes that do not contain metals. Further, our data identify candidate components of a high-affinity iron-uptake system, with several of the involved genes and domains originating from duplication events. A high genomic plasticity, as seen from the fraction of genes acquired through horizontal gene transfer, provides the platform for these complex adaptations to a low-iron world.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
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  • 8
    Publication Date: 2020-06-19
    Description: We present Proteomatic, an operating system independent and user-friendly platform that enables the construction and execution of MS/MS data evaluation pipelines using free and commercial software. Required external programs such as for peptide identification are downloaded automatically in the case of free software. Due to a strict separation of functionality and presentation, and support for multiple scripting languages, new processing steps can be added easily.
    Type: Article , PeerReviewed
    Format: text
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  • 9
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    American Society for Biochemistry and Molecular Biology
    In:  Molecular & Cellular Proteomics, 9 (7). pp. 1514-1532.
    Publication Date: 2020-06-30
    Description: The versatile metabolism of the green alga Chlamydomonas reinhardtii is reflected in its complex response to anaerobic conditions. The anaerobic response is also remarkable in the context of renewable energy because C. reinhardtii is able to produce hydrogen under anaerobic conditions. To identify proteins involved during anaerobic acclimation as well as to localize proteins and pathways to the powerhouses of the cell, chloroplasts and mitochondria from C. reinhardtii in aerobic and anaerobic (induced by 8 h of argon bubbling) conditions were isolated and analyzed using comparative proteomics. A total of 2315 proteins were identified. Further analysis based on spectral counting clearly localized 606 of these proteins to the chloroplast, including many proteins of the fermentative metabolism. Comparative quantitative analyses were performed with the chloroplast-localized proteins using stable isotopic labeling of amino acids ([(13)C(6)] arginine/[(12)C(6)]arginine in an arginine auxotrophic strain). The quantitative data confirmed proteins previously characterized as induced at the transcript level as well as identified several new proteins of unknown function induced under anaerobic conditions. These proteins of unknown function provide new candidates for further investigation, which could bring insights for the engineering of hydrogen-producing alga strains
    Type: Article , PeerReviewed
    Format: text
    Format: other
    Format: other
    Format: other
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  • 10
    Publication Date: 2020-06-15
    Description: he use and development of post-genomic tools naturally depends on large-scale genome sequencing projects. The usefulness of post-genomic applications is dependent on the accuracy of genome annotations, for which the correct identification of intron-exon borders in complex genomes of eukaryotic organisms is often an error-prone task. Although automated algorithms for predicting intron-exon structures are available, supporting exon evidence is necessary to achieve comprehensive genome annotation. Besides cDNA and EST support, peptides identified via MS/MS can be used as extrinsic evidence in a proteogenomic approach. We describe an improved version of the Genomic Peptide Finder (GPF), which aligns de novo predicted amino acid sequences to the genomic DNA sequence of an organism while correcting for peptide sequencing errors and accounting for the possibility of splicing. We have coupled GPF and the gene finding program AUGUSTUS in a way that provides automatic structural annotations of the Chlamydomonas reinhardtii genome, using highly unbiased GPF evidence. A comparison of the AUGUSTUS gene set incorporating GPF evidence to the standard JGI FM4 (Filtered Models 4) gene set reveals 932 GPF peptides that are not contained in the Filtered Models 4 gene set. Furthermore, the GPF evidence improved the AUGUSTUS gene models by altering 65 gene models and adding three previously unidentified genes.
    Type: Article , PeerReviewed
    Format: text
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