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Ribosome-inactivating proteins: Current status and biomedical applications

机译:核糖体失活蛋白:现状和生物医学应用

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Ribosome-inactivating proteins (RIPs) are mainly present in plants and function to inhibit protein synthesis through the removal of adenine residues from eukaryotic ribosomal RNA (rRNA). They are broadly classified into two groups: type I and type II. Type I RIPs are a diverse family of proteins comprising a single polypeptide chain, whereas type II RIPs are heterodimeric glycoproteins comprising an A-chain (functionally equivalent to a type I RIP) linked via a disulphide bond to a B chain, mediating cell entry. In this review, we describe common type I and type II RIPs, their diverse biological functions, mechanism of cell entry, stability in plasma and antigenicity. We end with a discussion of promising applications for RIPs in biomedicine.
机译:核糖体失活蛋白(RIP)主要存在于植物中,并通过从真核生物核糖体RNA(rRNA)中去除腺嘌呤残基来抑制蛋白质合成。它们大致分为两类:I型和II型。 I型RIP是包含单个多肽链的各种蛋白质家族,而II型RIP是包含通过二硫键连接至B链的A链(功能等同于I RIP的A链)的异二聚糖蛋白,介导细胞进入。在这篇综述中,我们描述了常见的I型和II型RIP,它们的多种生物学功能,细胞进入机制,血浆稳定性和抗原性。最后,我们讨论了RIP在生物医学中的应用前景。

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