Detailed restriction and nucleotide sequence analysis of the Pseudomonas putida TOL plasmid pDK1 xylE gene revealed significant homology with isofunctional xylE (81.5%) and nahH (78.0%) genes from the TOL pWW0 and NAH7 plasmids. The highest degrees of nucleotide and apparent amino acid conservation (82.2 and 86.4%, respectively) among all three genes were found to exist within a region comprisi...

Science and society would benefit enormously from detailed and well-supported knowledge of the Tree of Life (TOL). At present, however, we know relatively little about the phylogenetic relationships of most of the species on Earth, or even among many of the major branches of the Tree. Fortunately, we have reached a turning point. Owing to fundamental theoretical advances, to the development of ...

Debates over the status of the tree of life (TOL) often proceed without agreement as to what it is supposed to be: a hierarchical classification scheme, a tracing of genomic and organismal history or a hypothesis about evolutionary processes and the patterns they can generate. I will argue that for Darwin it was a hypothesis, which lateral gene transfer in prokaryotes now shows to be false. I w...

IN THE TITLE COMPOUND (SYSTEMATIC NAME 3-phenyl-4-{3-[(p-tol-yloxy)meth-yl]-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl}-1,2,3-oxadiazol-3-ium-5-olate), C(20)H(16)N(6)O(3)S, an intra-molecular C-H⋯O hydrogen bond generates an S(6) ring motif. The 3,6-dihydro-1,3,4-thia-diazine ring adopts a twist-boat conformation. The 1,2,3-oxadiazole and 1,2,4-triazole rings are inclined to each other at ...

In this article, the efficiency of time adaptive Rosenbrock and ESDIRK methods is compared for finite volume discretizations for compressible unsteady viscous flows. To make the comparison fair, first an efficient solver for both classes in the JFNK context is identified, where the tolerance TOL that steers time adaptivity is the main input parameter. To specify the tolerances in the sub solver...

The title compound, [RhCl(C(21)H(21)P)(2)(CO)]·C(3)H(6)O, was precipitated in trace yield from a reaction of RhCl(cod)(THP) with P(p-tol)(3) in a 1:1 acetone-d(6)/CD(3)OD solution under a hydrogen atmosphere [p-tol = p-tolyl, THP = tris-(hydroxy-meth-yl)phosphine, P(CH(2)OH)(3), and cod = 1,5-cyclo-octa-diene]. The complex displays a square-planar geometry around the Rh(I) atom. The complex mol...

We studied whether nucleoid exclusion contributes to the segregation and retention of Tsr chemoreceptor clusters at the cell poles. Using live time-lapse, single-cell microscopy measurements, we show that the single-cell spatial distributions of Tsr clusters have heterogeneities and asymmetries that are consistent with nucleoid exclusion and cannot be explained by the diffusion-and-capture mech...