Consistent with these data is the observation that N-terminal mutants of Neurospora crassa VDAC have an increased preference for the cation selective "closed" state.
This allows selective closing of specific flow channels under the thick sections, Dr. Thorsen said.
From simulation, it can be seen that if a selective events occur sufficiently close together, there will not be time for diversity to recover and thus the second selective event will remain to a large extent hidden.
In addition to AMN082, two transmembrane-binding negative allosteric modulators, MMPIP and ADX71743, as well as a selective antagonist that binds closer to the glutamate binding domain, XAP044, have recently been reported in the literature.
We use TIRF microscopy here not to provide a selective illumination of events very close to the plasma membrane but instead with an increased penetration depth to facilitate this increase in signal-to-noise.
We feel that a comprehensive model requires a component that provides a selective advantage for moving genes closer together in a genome and a separate component providing selective advantage for operon formation.
This analysis suggests that virus performance at moderate temperatures and evolvability under extreme temperature is not a trivial relationship, such as that resulting from a pre-existing mutation in a founding clone which places its descendent lineage closer to a selective optimum that is only two mutational steps away.
We conclude that the Selfish Operon Model is insufficient to account for the assembly of clusters and operons and that any relevant model for cluster and operon assembly needs to include a credible component that provides a selective advantage for genes moving closer together.
In other cases, the evolution of ligand binding is more "chaotic" with close orthologs having a selective ligand binding ability that varies extensively (vertebrate VDRs are very well conserved when PXRs have the widest ligand repertoire of all NRs) [ 83].
We have selected an exemplar well-characterised biochemical pathway, the phenylacetate degradation pathway, and we show that its complex history is only compatible with a model where a selective advantage accrues from moving genes closer together.
However, a closer look points to a selective propagation of information.
