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  • Title: The acidic ribosomal P proteins.
    Author: Tchórzewski M.
    Journal: Int J Biochem Cell Biol; 2002 Aug; 34(8):911-5. PubMed ID: 12007628.
    Abstract:
    The acidic ribosomal P proteins (pI 3-4) are unique among ribosomal constituents: the only molecules on the ribosomes existing in multiple copies, they form a hetero-oligomeric complex (P1/P2)(2) recognizable as a lateral protuberance on the 60S ribosomal subunit, which is thought to be directly involved in interactions with elongation factors during the course of protein synthesis. The role of P proteins in translation is still vague; however, they might possess two functional roles-the proteins may increase performance of ribosomes and/or change ribosomal specificity toward different subset of mRNAs. Furthermore, there are also indications that P proteins might be involved in transcription and DNA repair. Also, P proteins are important antigens in autoimmune diseases, infections caused by protozoan parasites, and in molds.
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