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The retrograde membrane transport pathways from endosomes to the trans-Golgi network (TGN) are now recognized as critical intracellular pathways to recycle and shuttle a selective subgroup of membrane proteins, including sorting receptors, membrane-bound enzymes, transporters, as well as providing an avenue for the intracellular transport of various bacterial toxins. Multiple pathways from endosomes...
Endoplasmic reticulum (ER) stress caused by misfolded proteins or cytotoxic drugs can kill cells and although activation of this pathway has been implicated in the etiology of certain degenerative disorders its mechanism remains unresolved. Bim, a proapoptotic BH3-only member of the Bcl-2 family is required for initiation of apoptosis induced by cytokine deprivation or certain stress stimuli. Its...
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