Photosynthesis-driven whole-cell biocatalysis has great potential to contribute a sustainable bio-economy since phototrophic cells use light as the only energy source. It yet be shown that microorganisms, such cyanobacteria, can combine supply of high heterologous enzyme levels with allocation sufficient reduction equivalents enable efficient light-driven redox biocatalysis. Here, we demonstrat...

Using magnetic tweezers, we study in real time the condensation of single DNA molecules under tension. We find that DNA condensation occurs via discrete nucleated events. By measuring the influence of an imposed twist, we show that condensation is initiated by the formation of a plectonemic supercoil. This demonstrates a strong interplay between the condensation transition and externally impose...

Beta zeolite modified with Sn in the framework (Sn-Beta) was synthesized and introduced as a heterogeneous catalyst for Baeyer–Villiger oxidations about twenty years ago. Since then, both syntheses strategies, characterization understanding well applications material have developed significantly. Remarkably, Sn-Beta has been discovered to exhibit unprecedented high catalytic efficiency transfor...

Certain chromosome rearrangements display a significant delay in replication timing that is associated with a delay in mitotic chromosome condensation. Chromosomes with delay in replication timing/delay in mitotic chromosome condensation participate in frequent secondary rearrangements, indicating that cells with delay in replication timing/delay in mitotic chromosome condensation display chrom...

A-kinase (or PKA)-anchoring protein AKAP95 is a zinc-finger protein implicated in mitotic chromosome condensation by acting as a targeting molecule for the condensin complex. We have identified determinants of chromatin-binding, condensin-targeting and chromosome-condensation activities of AKAP95. Binding of AKAP95 to chromatin is conferred by residues 387-450 and requires zinc finger ZF1. Resi...

Metastable triplet helium is an interesting atom, next to the alkalis and atomic hydrogen, to pursue Bose–Einstein condensation. In this paper an overview of the relevant physics of triplet helium and experimental progress in Amsterdam towards reaching Bose– Einstein condensation is described.  2001 Académie des sciences/Éditions scientifiques et médicales Elsevier SAS cold atoms / metastable ...