Isolation, separation and purification articles within Nature

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  • Letter |

    The structures of three distinct human transcription factor IID (TFIID) protein assemblies are solved using cryo-electron microscopy; by incorporating TAF8 and TAF10, the key structural changes that remodel TFIID during assembly are determined, particularly the transition from a symmetric core-TFIID to an asymmetric holo-complex.

    • Christoph Bieniossek
    • , Gabor Papai
    •  & Imre Berger

  • Letter |

    Electrophoresis is a motion of charged dispersed particles relative to a fluid in a uniform electric field. Here it is described how an anisotropic fluid — a nematic liquid crystal — can lead to motion of both charged and neutral particles, even when they are perfectly symmetrical, in any type of electric field. The phenomenon is caused by a distortion in the orientation of the liquid crystals around the particles. The approach could see applications in, for example, display technologies and colloidal assembly and disassembly.

    • Oleg D. Lavrentovich
    • , Israel Lazo
    •  & Oleg P. Pishnyak

  • Letter |

    These authors show that the JmjC domain-containing protein PHF8 has histone demethylase activity against H4K20me1 and is linked to two distinct events during cell cycle progression. PHF8 is recruited to the promoters of genes involved in the G1–S phase transition, where it removes H4K20me1 and contributes to gene activation, whereas dissociation of PHF8 from chromatin in prophase allows H4K20me1 to accumulate during mitosis.

    • Wen Liu
    • , Bogdan Tanasa
    •  & Michael G. Rosenfeld

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