In eukaryotic cell nuclei, DNA associates with the core histones H2A, H2B, H3 and H4 to form nucleosomal core particles. DNA binding to histones is regulated by posttranslational modifications of N-terminal tails (e.g., acetylation and methylation of histones). These modifications play important roles in the epigenetic control of chromatin structure. Recently, evidence that biotinidase and holo...

In the title complex, [V(C(13)H(15)NO(3))O(CH(3)O)(CH(3)OH)], the V(V) atom is six-coordinated by a tridentate O,N,O'-donor ligand, derived from the condensation of salicyl-aldehyde and l-isoleucine, a vanadyl O atom, a methano-late O atom and a methanol O atom in a distorted octa-hedral geometry. The asymmetric unit contains two complex mol-ecules. In the crystal, inter-molecular O-H⋯O and C-H...

The asymmetric unit of the title tetra-nuclear niobium(V) compound, [Nb(4)(C(2)H(5)O)(8)(C(5)H(7)O(2))(4)O(4)], contains two Nb(V) atoms, two bridging O atoms, two acetyl-acetonate and four ethano-late ligands. Each Nb(V) atom is six-coordinated by the bridging O atoms, two ethano-late and one chelating acetyl-acetonate ligands. The Nb-O distances vary between 1.817 (2) and 2.201 (2) Å and the ...

Homeodomains appear to be one of the most frequently employed DNA-binding domains in a superfamily of transacting factors. It is likely that during evolution several sub-types of homeodomain have evolved from a common ancestral domain, resulting in distinct but closely related DNA-binding preferences. Here we describe the conservation of a distinct type of homeodomain encoded by the Drosophila ...

BACKGROUND AND OBJECTIVES There are conflicting views as to whether testing for biotinidase deficiency (BD) ought to be incorporated into universal newborn screening (NBS) programs. The aim of this study was to evaluate the cost-effectiveness of adding BD to the panel of conditions currently screened under the national NBS program in Spain. METHODS We used information from the regional NBS pr...