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Helix-Turn-Helix Motifs: The first DNA-binding protein motif to be recognized. Helix-turn-helix motifs were originally identified in bacterial proteins but have since been found in hundreds of Dna-binding proteins from both eukaryotes and prokaryotes. They are constructed from two alpha helices connected by a short extended chain of amino acids, which constitute the "turn." The two helices are held at a fixed angle, primarily through interactions between the two helices. (From Alberts et al., Molecular Biology of the Cell, 3d ed, p408-9)

Identification of Nucleolar Factors During HIV-1 Replication Through Rev Immunoprecipitation and Mass Spectrometry

1Molecular and Cellular Biology Department, Beckman Research Institute at the City of Hope, 2Irell & Manella Graduate School of Biological Sciences, 3Department of Molecular Immunology, Beckman Research Institute and the City of Hope

JoVE 59329

 Immunology and Infection
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