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Evidence for a COP-I-independent transport route from the Golgi complex to the endoplasmic reticulum
The cytosolic coat-protein complex COP-I interacts with cytoplasmic ‘retrieval’ signals present in membrane proteins that cycle between the endoplasmic reticulum (ER) and the Golgi complex, and isExpand
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Ribosome inactivating proteins of plants.
Many plant tissues produce single chain proteins which can enzymatically remove a specific adenine residue from ribosomal RNA. Although these proteins are potently toxic to isolated ribosomes, theyExpand
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Cytotoxic ribosome-inactivating lectins from plants.
A class of heterodimeric plant proteins consisting of a carbohydrate-binding B-chain and an enzymatic A-chain which act on ribosomes to inhibit protein synthesis are amongst the most toxic substancesExpand
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The association of Shiga-like toxin with detergent-resistant membranes is modulated by glucosylceramide and is an essential requirement in the endoplasmic reticulum for a cytotoxic effect.
Receptor-mediated internalization to the endoplasmic reticulum (ER) and subsequent retro-translocation to the cytosol are essential sequential processes required for the productive intoxication ofExpand
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Syntaxin 16 and syntaxin 5 are required for efficient retrograde transport of several exogenous and endogenous cargo proteins
Retrograde transport allows proteins and lipids to leave the endocytic pathway to reach other intracellular compartments, such as trans-Golgi network (TGN)/Golgi membranes, the endoplasmic reticulumExpand
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Protein disulphide-isomerase reduces ricin to its A and B chains in the endoplasmic reticulum.
Cells expressing ricin B chain within the secretory pathway are significantly more resistant to intoxication by ricin holotoxin but not to other cytotoxins that exploit similar endocytic routes toExpand
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Ricin: structure, mode of action, and some current applications
Ricin is an abundant protein component of Ricinus communis seeds (castor beans) that is exquisitely toxic to mammalian cells. It consists of an enzymic polypeptide that catalyzes the N‐glycosidicExpand
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ENDOPLASMIC RETICULUM AS THE SITE OF LECITHIN FORMATION IN CASTOR BEAN ENDOSPERM
The properties of a discrete membranous fraction isolated on sucrose gradients from castor bean endosperm have been examined. This fraction was previously shown to be the exclusive site ofExpand
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Ricin A chain utilises the endoplasmic reticulum‐associated protein degradation pathway to enter the cytosol of yeast
Cytotoxic proteins such as ricin A chain (RTA) have target substrates in the cytosol and therefore have to reach this cellular compartment in order to act. RTA is thought to translocate into theExpand
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Internalized Pseudomonas Exotoxin A can Exploit Multiple Pathways to Reach the Endoplasmic Reticulum
Receptor‐mediated internalization to the endoplasmic reticulum (ER) and subsequent retro‐translocation to the cytosol are essential sequential processes required for the intoxication of mammalianExpand
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