[Survivin, the starlet of the passenger-protein complex : check-up for its tenth anniversary].

Ten year after its discovery Survivin has gained a strategic place within the chromosomal passenger complex. Whereas INCENP, Borealin and Aurora B are fully immobile in the complex, Survivin is mobile on centromere. Its mobility is regulated both by phosphorylation and ubiquitination.

How elementary mercury reacts in the presence of halogen radicals and/or halogen anions: a DFT investigation.

Reactions of elementary mercury in the gas phase (GEM) have been investigated at the DFT level in the presence of halogen radicals and/or halogen anions. In the presence of radicals, the formation of HgX(3)* and HgX(4)* is predicted to be favourable. Moreover, in the presence of anions, the free-radical liberation is enhanced from these two species allowing the presence of halogen free radicals even without the presence of light radiation.

Role of survivin phosphorylation by aurora B in mitosis.

The chromosomal protein passenger complex, a key mitotic regulator, consists of at least four proteins, INCENP, Aurora B, Survivin and Borealin. Survivin, in contrast to the other members of the chromosomal protein passenger complex (CPC), is mobile at metaphase. This protein is also phosphorylated by Aurora B at Threonine 117.

Dissection of the unusual structural and functional properties of the variant H2A.Bbd nucleosome.

The histone variant H2A.Bbd appeared to be associated with active chromatin, but how it functions is unknown. We have dissected the properties of nucleosome containing H2A.

Distinct dynamics of Aurora B and Survivin during mitosis.

We have studied the dynamics of Aurora B and Survivin during mitosis in living cells, using C-terminal GFP chimeras of the two proteins. These chimeras showed identical localization and behave as bona fide wild type proteins. The mobility of Aurora B-GFP and Survivin-GFP was analyzed by FRAP.