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  • Title: Streptomyces lividans contains a minimal functional signal recognition particle that is involved in protein secretion.
    Author: Palacín A, de la Fuente R, Valle I, Rivas LA, Mellado RP.
    Journal: Microbiology (Reading); 2003 Sep; 149(Pt 9):2435-2442. PubMed ID: 12949169.
    Abstract:
    The bacterial version of the mammalian signal recognition particle (SRP) is well conserved and essential to all known bacteria. The genes for the Streptomyces lividans SRP components have been cloned and characterized. FtsY resembles the mammalian SRP receptor and the S. lividans SRP consists of Ffh, a homologue of the mammalian SRP54 protein, and scRNA, which is a small size RNA of 82 nt in length. Co-immunoprecipitation studies confirmed that Ffh and scRNA are probably the only components of the S. lividans SRP and that pre-agarase can co-immunoprecipitate with Ffh, suggesting that the SRP is involved in targeting secretory proteins.
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