Simulations and experiments on systems containing two different populations of microorganisms show that interactions that benefit at least one of the populations can lead to communities with stable compositions, and that strong cooperation between two populations can lead to communities in which both populations are mixed together.

Parallel branches of the ERAD pathway regulate sterol synthesis at multiple steps via feedback inhibition.

Two cooperative populations of yeast cells that cannot distinguish between cooperative partners and cheating intruders can still self-organize into clusters that exclude cheaters.

Experimental evolution and systematic sequence analysis of transfer RNA genes reveal that anticodon mutations provide adaptive plasticity to the translation machinery.

Peptide and nitrate transporters have been converted into fluorescent reporters of transport activity and have been used to measure various transport properties including the dual affinity of the nitrate transceptor

To avoid recognition by the immune system, bacteria use autolysins to trim fragments of peptidoglycans that are exposed on the bacterial cell wall.

Fluorescent sensors for the hormone abscisic acid have been developed using a high-throughput platform, and used to monitor hormone dynamics in plant roots and leaves.

A stable tetrameric nucleosome occupies the central segment of each ∼120-bp budding yeast centromere in two rotational phases of both reflectional orientations in vivo.

The need for efficient pre-RNA splicing during early embryonic development of Drosophila indicates that the constraints imposed by the cell cycle are a force capable of driving changes in Eukaryotic gene architecture.

The elongation rate of RNA Polymerase II varies greatly between and along genes, as this enzyme accelerates from stable pausing to rapid elongation within genes, and is influenced by CG-content, exons and chromatin.