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  • Title: T-even-type bacteriophages use an adhesin for recognition of cellular receptors.
    Author: Riede I, Drexler K, Schwarz H, Henning U.
    Journal: J Mol Biol; 1987 Mar 05; 194(1):23-30. PubMed ID: 3302275.
    Abstract:
    Protein 38 of the Escherichia coli phage T4 is thought to be required catalytically for the assembly of the long tail fibers of this phage. It is shown that this protein of phage T2 and the T-even-type phage K3 and Ox2 act differently. It was found that NH2-terminal fragments of the protein, expressed from cloned fragments of gene 38 of phage K3, bind to gene 38 amber mutants of phage T2. Such phage or T2 gene 38 amber mutants, grown on a non-permissive host, possess a complete set of six tail fibers but are non-infectious. Both types of non-infectious phage could be repaired by incubation with an extract of cells harboring a cloned gene 38 of a host range mutant of phage K3, K3hx. The repaired phages had the host range of K3hx and not of T2. Immuno-electron microscopy showed that protein 38 is located at the free ends of the long tail fibers of phages T2, K3 and Ox2. The protein serves the recognition of the cellular receptor, i.e. it acts as an adhesin.
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