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Comparative Study of Interaction of Two Type Ii Ribosome-Inactivating Proteins And Their A-Chains With Model Membrane

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Both cinnamomin and ricin are type II ribosome-inactivating proteins. Cinnamomin is less cytotoxic compared with ricin. In order to clarify the mechanism of their different cytotoxicities, the interaction of cinnamomin and its A-chain with model membrane was investigated and compared with that of ricin and its A-chain. It was revealed that cinnamomin is less effective than ricin in interacting with model membrane. Cinnamomin A-chain interacts with model membrane much less violently than ricin Achain. The differences in the interaction of cinnamomin, ricin or their A-chains with model membrane might at least in part indicate the different cytotoxicity between cinnamomin and ricin.
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Keywords: aggregation; cinnamomin; leakage; membrane

Document Type: Review Article

Affiliations: State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai.

Publication date: 2004-04-01

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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