Concept

Cluster fer-soufre

Publications associées (43)

APT/TEM characterization of the element segregation in ferritic/martensitic steels after irradiation in SINQ

Ferritic /martensitic (FM) steels are among the most important materials in various nuclear applications. As radiation-induced segregation (RIS) is one of the major factors for embrittlement of nuclear materials, thereofre it is essential to study the RIS ...

EPFL2021

Organohalide respiration: variations on a common theme

Christof Holliger, Julien Maillard, Mathilde Stéphanie Willemin, Lorenzo Cimmino

Organohalide respiration (OHR) is a bacterial anaerobic respiratory metabolism that makes use of halogenated organic compounds as terminal electron acceptors. While organohalogens have been initially thought to be mainly from anthropogenic origin, thousand ...

2021

An Experimental Setup for Heterogeneous Catalysis on Atomically Defined Metal Nanostructures

Jean-Guillaume De Groot

The main objective of this PhD thesis is to link the atomic scale structure to the catalytic properties of self-assembled nanostructures. The growth and characterization of these nanostructures was carried out in an ultra-high vacuum (UHV) chamber initiall ...

EPFL2021

Iron phosphate mediated magnetite synthesis: a bioinspired approach

Giulia Mirabello

The biomineralization of intracellular magnetite in magnetotactic bacteria (MTB) is an area of active investigation. Previous work has provided evidence that magnetite biomineralization begins with the formation of an amorphous phosphate-rich ferric hydrox ...

ROYAL SOC CHEMISTRY2021

FOLDING OF COMPLEX REDOX PROTEINS BY DEDICATED MOLECULAR CHAPERONES

Julien Maillard, Ziad Julier, Corantin Grob

Chlorinated compounds (so-called organohalides) are widespread soil and groundwater pollutants. Only few bacteria have the ability to degrade these compounds via organohalide respiration (OHR). Reductive dehalogenases (RDases) are complex redox enzymes inv ...

2016

A molecular chaperone dedicated to folding and translocation of reductive dehalogenases

Julien Maillard, Corantin Grob

Reductive dehalogenases (rdhA, RDases) are key enzymes involved in anaerobic organohalide respiration (OHR), during which bacteria are able to use chlorinated compounds as terminal electron acceptors. RDases are redox enzymes containing FeS clusters and a ...

2016

Gradual release of strongly bound nitric oxide from Fe2(NO)2(dobdc)

Wendy Lee Queen

An iron(II)-based metal-org. framework featuring coordinatively unsatd. redox-active metal cation sites, Fe2(dobdc) (dobdc4- = 2,5-dioxido-1,4-benzenedicarboxylate), is shown to strongly bind nitric oxide at 298 K. Adsorption isotherms indicate an adsorpti ...

2015

Role of sulfur in BaVS3 probed by S K-edge absorption spectroscopy

László Forró, Helmuth Berger

We show that the quasi-1D behavior of BaVS3 can be understood analyzing the X-ray absorption near edge spectra at the sulfur K edge. Linear dichroism experiments, analyzed with the help of ab initio calculations, reveal two strong and polarization dependen ...

Elsevier Science Bv2015

The cysteine desulfurase IscS of Mycobacterium tuberculosis is involved in iron sulfur cluster biogenesis and oxidative stress defence

Stewart Cole, Florence Pojer, Gaëlle Séraphine Kolly, Jan Lars Rybniker, Jeffrey Chen

The complex multiprotein systems for the assembly of protein-bound iron sulfur (Fe S) clusters are well defined in Gram-negative model organisms. However, little is known about Fe S cluster biogenesis in other bacterial species. The ISC (iron sulfur cluste ...

Portland Press2014

The knowns and unknowns of the physiology and biochemistry of organohalide respiration

Christof Holliger, Julien Maillard

Although a multitude of halogenated compounds are naturally produced, interest in biodegradation of these often toxic compounds has mainly been driven by anthropogenic contamination of soils and aquifers with huge amounts of chlorinated solvents (tetra- an ...

2014

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