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Endothelium-derived nitric oxide (NO) activates the heterodimeric heme protein soluble guanylate cyclase (sGC) to form cGMP. In different disease states, sGC levels and activity are diminished possibly involving the sGC binding chaperone, heat shock protein 90 (hsp90). Here we show that prolonged hsp90 inhibition in different cell types reduces protein levels of both sGC subunits by about half, an...
NOSTRIN, an NO synthase binding protein, belongs to the PCH family of proteins, exposing a typical domain structure. While its SH3 domain and the C-terminal coiled-coil region cc2 have been studied earlier, the function of the N-terminal half comprising a Cdc15 domain with an FCH (Fes/CIP homology) region followed by a coiled-coil stretch cc1 is unknown. Here, we show that the FCH region is necessary...
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