Now showing items 361-370 of 931
New criteria for selecting the origin of DNA replication in Wolbachia and closely related bacteria
(BioMed Central, 2007-06-20)
Background: The annotated genomes of two closely related strains of the intracellular bacterium Wolbachia pipientis have been reported without the identifications of the putative origin of replication (ori). Identifying ...
A new family of giardial cysteine-rich non-VSP protein genes and a novel cyst protein
(Public Library of Science, 2006-12)
Since the Giardia lamblia cyst wall is necessary for survival in the environment and host infection, we tested the hypothesis that it contains proteins other than the three known cyst wall proteins. Serial analysis of gene ...
Length control of the metaphase spindle
The pole-to-pole distance of the metaphase spindle is reasonably constant in a given cell type; in the case of vertebrate female oocytes, this steady state length can be maintained for substantial lengths of time, during ...
The protein that binds to DNA base J in trypanosomatids has features of a thymidine hydroxylase
(Oxford University Press, 2007-03-27)
Trypanosomatids contain an unusual DNA base J (ß-D-glucosylhydroxymethyluracil), which replaces a fraction of thymine in telomeric and other DNA repeats. To determine the function of base J, we have searched for enzymes ...
Polar body formation in Spisula oocytes : function of the peripheral aster
(Marine Biological Laboratory, 2005-08)
Activated Spisula oocytes proceed through meiotic stages rapidly and in near synchrony, providing an excellent system for analyzing polar body formation. Our previous studies suggested that cortical spreading of the metaphase ...
Dendritic signals from rat hippocampal CA1 pyramidal neurons during coincident pre- and post-synaptic activity : a combined voltage- and calcium-imaging study
The non-linear and spatially inhomogeneous interactions of dendritic membrane potential signals that represent the first step in the induction of activity dependent long-term synaptic plasticity are not fully understood, ...
Pattern and variation of C:N:P ratios in China’s soils : a synthesis of observational data
Inspired by previous studies that have indicated consistent or even well-constrained relationships among carbon (C), nitrogen (N) and phosphorus (P) in soils, we have endeavored to explore general soil C:N:P ratios in ...
Consequences of considering carbon–nitrogen interactions on the feedbacks between climate and the terrestrial carbon cycle
(American Meteorological Society, 2008-08-01)
The impact of carbon–nitrogen dynamics in terrestrial ecosystems on the interaction between the carbon cycle and climate is studied using an earth system model of intermediate complexity, the MIT Integrated Global Systems ...
(American Meteorological Society, 2010-04-15)
Corrigendum: Sokolov, A., and Coauthors, 2009: Probabilistic forecast for twenty-first-century climate based on uncertainties in emissions (without policy) and climate parameters. J. Climate, 22, 5175–5204.
Accuracy and quality of massively parallel DNA pyrosequencing
(BioMed Central, 2007-07-20)
Massively parallel pyrosequencing systems have increased the efficiency of DNA sequencing, although the published per-base accuracy of a Roche GS20 is only 96%. In genome projects, highly redundant consensus assemblies can ...