1. Whole lettuce plants were incubated with (1) [1-(14)C]acetate, (2) fluoroacetate followed by [1-(14)C]acetate, (3) fluoro[1-(14)C]acetate, (4) fluoro[2-(14)C]acetate or (5) S-carboxy[(14)C]methylglutathione. 2. Fluoroacetate did not affect the expiration of (14)CO(2) from [1-(14)C]acetate and only a small amount of (14)CO(2) was produced from either fluoro[1-(14)C]-acetate or fluoro[2-(14)C]...

The structure of wermlandite, [Mg7(Alo.57Feo.43h(OH)ls]2+ [(CaO.6' Mgo.4) (S04h(H20)u]2has been determined and refined to an R value of 7.2 % based on 779 symmetry-independent reflections, of which 224 are unobserved (weighted R=6.1%). The cell dimensions are a=b=9.303(3), c=22.57(1) A, the space group is pjc1 with Z=2 ~nd Dx=1.96 cm-3. The double layer structure ofwermlandite is similar to tho...

Analysis of the functional nature of mutations can be based on comparisons of their manifestation in organisms with a deletion or duplication of a particular chromosome segment. With the use of reciprocal translocation T(16;17)43H, it is feasible to produce mice with tertiary trisomy of the proximal region of chromosome 17. The mutations on chromosome 17 we tested included brachyury (T), hairpi...

The antiviral factor tripartite interaction motif 5alpha (Trim5alpha) restricts a broad range of retroviruses in a species-specific manner. Although human Trim5alpha is unable to block HIV-1 infection in human cells, a modest inhibition of HIV-1 replication has been reported. Recently two polymorphisms in the Trim5 gene (H43Y and R136Q) were shown to affect the antiviral activity of Trim5alpha ...

We describe a general framework for constructing two-dimensional crystals with prescribed depth and sophisticated three-dimensional features. These crystals may serve as scaffolds for the precise spatial arrangements of functional materials for diverse applications. The crystals are selfassembled from single-stranded DNA components called DNA bricks. We demonstrate the experimental construction...

A series of peptide-based triblock copolymers cons i s t ing of poly(γ -benzy l -L -g lu tamate) -b -po ly (dimethylsiloxane)-b-poly(γ-benzyl-L-glutamate) [PBLG-bPDMS-b-PBLG] were synthesized using ring-opening polymerization (ROP). The chemical structure and degree of polymerizations were evaluated by H NMR. These triblock copolymers form thermoreversible gels in toluene with critical gel conc...