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Vertebrate members of the nuclear receptor NR5A subfamily, which includes steroidogenic factor 1 (SF-1) and liver receptor homolog 1 (LRH-1), regulate crucial aspects of development, endocrine homeostasis, and metabolism. Mouse LRH-1 is believed to be a ligand-independent transcription factor with a large and empty hydrophobic pocket. Here we present structural and biochemical data for three other...
Kinesin motors convert chemical energy from ATP hydrolysis into unidirectional movement. To understand how kinesin motors bind to and move along microtubules, we fit the atomic structure of the motor domain of Ncd (a kinesin motor involved in meiosis and mitosis) into three-dimensional density maps of Ncd-microtubule complexes calculated by cryo-electron microscopy and image analysis. The model reveals...
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