R. Wade Warrant

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Thr~ structural features of yeast phenylalanine transfer RNA are analyzed and documented in detail, based on atomic co-ordinates obtained from an extensive crystallographic refinement of t,he crystal structure of the molecule at 2.7 A resolution (see preceding paper). We describe here: the relative orientation and the helicity of the base-paired stems; more(More)
X-ray crystallographic studies indicate that there are at least four site-specifically bound hydrated Mg 2 + ions, [Mg(H20)n] , in yeast tRNA. The size and the octahedral coordination geometry, rather than the charge, of [Mg(H2O)n] 2+ appear to be the primary reasons for the specificity of magnesium ions in site-binding and in the stabilization of the(More)
Single crystal X-ray diffraction and circular dichroism studies of protamine binding to a tRNA suggest that the protamine molecule changes its conformation from a random coil to a structure containing a helices on binding to tRNA, and that alpha-helical segment(s) of protamine bind approximately along a shallow groove of a double-helical portion of ttrna.(More)
All the heavy atoms that have so far been found to provide good derivative crystals do so by forming direct coordination bonds to either the backbone or the bases of nucleic acids in an environment where the coordination shell can be further stabilized by several hydrogen bonds. A summary of coordination sites is shown in Fig. 5 and listed below: Lanthanide(More)
X-ray crystallagraphic studies studies indicate that there are at least four site-specifically bound hydrated Mg2+ ions, [Mg(H2O)n]2+, in yeast tRNAPhe. The size and the octahedral coordination geometry, rather than the charge, of [Mg(H2O)N]2+ appear to be the primary reasons for the specificity of magnesium ions in site-binding and in the stabilization of(More)
X-ray crystallographic studies indicate that there are at least four site-specifically bound hydrated Mg2+ ions, [Mg(H20)n]2+, in yeast tRNAPhe. The size and the octahedral coordination geometry, rather than the charge, of [Mg(H20)n]2+ appear to be the primary reasons for the specificity of magnesium ions in site-binding and in the stabilization of the(More)
Gibbsite [Al(OH)(3)] and boehmite (AlOOH) have long been assumed to be the most prevalent aluminum-bearing minerals in Hanford high-level nuclear waste sludge. The present study shows that dawsonite [NaAl(OH)(2)CO(3)] is also a common aluminum-bearing phase in tanks containing high total inorganic carbon (TIC) concentrations and (relatively) low dissolved(More)
The Department of Energy’s River Protection Project (RPP) is tasked with retrieving highly radioactive waste from Hanford double-shell and single-shell tanks to provide feed for vitrification for long-term storage. Approximately 330,000 metric tons of sodium-rich radioactive waste originating from separation of plutonium from irradiated uranium fuel is(More)
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