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941.
Molecular Cloning Reveals that the p160 Myb-Binding Protein Is a Novel, Predominantly Nucleolar Protein Which May Play a Role in Transactivation by Myb 总被引:8,自引:3,他引:5
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942.
p300/CREB Binding Protein-Related Protein p270 Is a Component of Mammalian SWI/SNF Complexes 总被引:9,自引:5,他引:4
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943.
944.
Chenguang Lou Qiang Xiao Lavinia Brennan Mark E Light Nuria Vergara-Irigaray Elizabeth M. Atkinson Lindy M. Holden-Dye Keith R. Fox Tom Brown 《Bioorganic & medicinal chemistry》2010,18(17):6389-6397
2′-O-(2-Methoxyethyl)-5-(3-aminoprop-1-ynyl)-uridine phosphoramidite (MEPU) has been synthesized from d-ribose and 5-iodouracil and incorporated into triplex-forming oligonucleotides (TFOs) by automated solid-phase oligonucleotide synthesis. The TFOs gave very high triplex stability with their target duplexes as measured by ultraviolet/fluorescence melting and DNase I footprinting. The incorporation of MEPU into TFOs renders them resistant to degradation by serum nucleases. 相似文献
945.
Polytomies, or phylogenetic “bushes”, are the result of a series of internodes occurring in a short period of evolutionary time (which can result in data that do not contain enough information), or data that have too much homoplasy to resolve a bifurcating branching pattern. In this study we used the Aethia auklet polytomy to explore the effectiveness of different methods for resolving polytomies: mitochondrial DNA gene choice, number of individuals per species sampled, model of molecular evolution, and AFLP loci. We recovered a fully-resolved phylogeny using NADH dehydrogenase subunit 2 (ND2) sequence data under two different Bayesian models. We were able to corroborate this tree under one model with an expanded mtDNA dataset. Effectiveness of additional intraspecific sampling varied with node, and fully 20% of the subsampled datasets failed to return a congruent phylogeny when we sampled only one or two individuals per species. We did not recover a resolved phylogeny using AFLP data. Conflict in the AFLP dataset showed that nearly all possible relationships were supported at low levels of confidence, suggesting that either AFLPs are not useful at the genetic depth of the Aethia auklet radiation (7–9% divergent in the mtDNA ND2 gene), perhaps resulting in too much homoplasy, or that the Aethia auklets have experienced incomplete lineage sorting at many nuclear loci. 相似文献
946.
947.
M. Elizabeth McMenamin Jonathan Himmelfarb Thomas D. Nolin 《Journal of chromatography. B, Analytical technologies in the biomedical and life sciences》2009,877(28):3274-3281
Aminothiols serve numerous vital functions in biochemistry, including detoxification and regulation of cellular metabolism, enzymatic activity, and protein trafficking and degradation. Plasma aminothiol concentrations are frequently measured for clinical and translational research investigating oxidative stress, and for routine clinical diagnosis and monitoring of vascular injury. Although a variety of techniques are available to measure aminothiol concentrations in plasma, high performance liquid chromatography with fluorescence detection (HPLC–FD) is the most widely used. This review summarizes HPLC–FD methods, including pre-analytical considerations, procedures for sample reduction, derivatization, and chromatographic separation of the primary biological aminothiols cysteine, homocysteine, cysteinylglycine, and glutathione in human plasma. 相似文献
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950.
Elizabeth Faris Crowell Martine GonneauSamantha Vernhettes Herman Höfte 《Comptes rendus biologies》2010,333(4):320-324
Plant growth and development depend on anisotropic cell expansion. Cell wall yielding provides the driving force for cell expansion, and is regulated in part by the oriented deposition of cellulose microfibrils around the cell. Our current understanding of anisotropic cell expansion combines hypotheses generated by more than 50 years of research. Here, we discuss the evolving views of researchers in the field of cellulose synthesis, and highlight several unresolved questions. Recent results using live-cell imaging have illustrated novel roles for cortical microtubules in cellulose synthesis, and further research using these approaches promises to reveal exciting links between the cytoskeleton, intracellular trafficking, and anisotropic growth. 相似文献