M. Hippler

Characterization of Tryptophan Oxidation Affecting D1 Degradation by FtsH in the Photosystem II Quality Control of Chloroplasts

This study shows that Trp oxidation at the N-terminus of D1 protein enhances FtsH-mediated degradation during high-light stress in PSII repair.

Cyclic and pseudo-cyclic electron pathways play antagonistic roles during nitrogen deficiency in Chlamydomonas reinhardtii

This study investigates the roles of cyclic and pseudo-cyclic electron pathways in Chlamydomonas reinhardtii under nitrogen deficiency, showing they have antagonistic effects on photosynthesis and carbon storage.

Calredoxin regulates the chloroplast NADPH-dependent thioredoxin reductase in Chlamydomonas reinhardtii

The paper investigates the role of calredoxin (CRX) in regulating the chloroplast NADPH-dependent thioredoxin reductase (NTRC) in Chlamydomonas reinhardtii, showing that CRX controls redox balance and photosynthesis efficiency.

Hydrogen production in the presence of oxygen by Escherichia coli K-12

This study investigates formate and H2 metabolism in E. coli under anaerobic and micro-aerobic conditions using multiple spectroscopic and genetic methods.

The algal PETC-Pro171-Leu suppresses electron transfer in the cytochrome b6f complex under acidic lumenal condition

The paper introduces a mutation in the algal cytochrome b6f complex that alters its pH dependency, affecting electron transfer under acidic conditions.

Photoprotection is regulated by light-independent CO2 availability

This study shows that CO2 availability, not light, directly regulates photoprotection and the CO2 concentrating mechanism in Chlamydomonas reinhardtii, with light indirectly influencing these processes by altering CO2 levels.

Algal photosystem I dimer and high resolution model of PSI:plastocyanin complex

The paper presents a cryo-EM structure of a homodimeric chloroplast PSI from Chlamydomonas reinhardtii, revealing its organization and interactions with plastocyanin and Lhca9.

Functional basis of electron transport within photosynthetic complex I

The paper determines the reduction potentials of iron-sulphur clusters in Photosynthetic Complex I using DEER, revealing its bioenergetics and mechanism.

Structure of plant PSI-plastocyanin complex reveals strong hydrophobic interactions.

The paper uses genetic engineering, kinetics, and cryo-EM to reveal hydrophobic interactions in the plant PSI-Pc complex that facilitate electron transfer and regulate Pc dissociation.

Photosynthetic activity triggers pH and NAD redox signatures across different plant cell compartments

The paper investigates how photosynthetic activity affects subcellular pH and NAD redox status in Arabidopsis cells using fluorescent biosensors.

Distinct roles of nonmuscle myosin II isoforms for establishing tension and elasticity during cell morphogenesis

This study investigates the distinct roles of nonmuscle myosin II isoforms in cell morphogenesis by analyzing their contributions to tension and elasticity using CRISPR/Cas9 knockouts and mathematical modeling.

Cytochrome b6f complex inhibition by antimycin-A requires Stt7 kinase activation but not PGR5.

The paper shows that antimycin-A inhibits the cytochrome b6f complex in a PGR5-independent manner during cyclic electron flow, requiring Stt7 kinase activation.

Co-expressed subunits of dual genetic origin define a conserved supercomplex mediating essential protein import into chloroplasts

The paper identifies a conserved TicToc supercomplex in chloroplast protein import across species, showing coordinated gene expression and essential functional roles.

Altered N-glycan composition impacts flagella mediated adhesion in Chlamydomonas reinhardtii

This study shows that altered N-glycan composition in Chlamydomonas reinhardtii reduces flagella-mediated adhesion and surface binding.

PGR5 is required for efficient Q cycle in the cytochrome b6f complex during cyclic electron flow

This study re-evaluates the role of PGR5 in the cytochrome b6f complex of Chlamydomonas reinhardtii, showing it enables efficient Q cycle during cyclic electron flow by regulating redox activity modes.

Novel insights into N-glycan fucosylation and core xylosylation in C. reinhardtii

The paper identifies a second core xylosyltransferase (XylT1B) and a fucosyltransferase in C. reinhardtii, showing their roles in N-glycan core modifications through mutant analysis.