Margaret Barclay

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Mechanosensitive ion channels play a critical role in transducing physical stresses at the cell membrane into an electrochemical response. The MscL family of large-conductance mechanosensitive channels is widely distributed among prokaryotes and may participate in the regulation of osmotic pressure changes within the cell. In an effort to better understand(More)
The mechanosensitive channel of small conductance (MscS) responds both to stretching of the cell membrane and to membrane depolarization. The crystal structure at 3.9 angstroms resolution demonstrates that Escherichia coli MscS folds as a membrane-spanning heptamer with a large cytoplasmic region. Each subunit contains three transmembrane helices (TM1, -2,(More)
This study examined the morbidity experience from 1981 to 1988 of two cohorts (Shell cohort and Enterline cohort) of workers who had potential exposure to epichlorohydrin (ECH). The morbidity prevalence data for this study were extracted from the morbidity section of the Shell health surveillance system which included all illness and absence records in(More)
50 Background: Recent studies suggest that early integration of palliative care services into the care of patients with advanced cancer can improve end of life care. Unfortunately, there are insufficient resources for all advanced cancer to see palliative care from time of diagnosis. This 2012 CMS innovation award is attempting to improve identification of(More)
As in the study of the previously determined MscL structure (S1), multiple homologs of MscS [encoded by the yggb gene (S2)] were identified by BLAST searching of the NCBI genome database. Ten homologs from prokaryotes and Archaea were identified and subsequently cloned. The channels were subcloned into expression vectors (pET system, Novagen) and expression(More)
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