title: Shooting blanks: Ca2+-free signaling.
abstract: Insect flight muscle is capable of very high oscillatory frequencies. In this issue of Structure, De Nicola and colleagues (De Nicola et al., 2007) describe the structure of the Ca2+ binding protein that regulates asynchronous contraction, casting light on the mechanism of stretch activation.
authors.forename: Brian D
authors.initials: BD
authors.lastname: Sykes
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002135:Calcium-Binding Proteins / Q000737:chemistry* / Q000502:physiology; D020062:Heteroptera / Q000378:metabolism / Q000502:physiology*; D008958:Models, Molecular; D009119:Muscle Contraction / Q000502:physiology; D009132:Muscles / Q000502:physiology; D019906:Nuclear Magnetic Resonance, Biomolecular; D011487:Protein Conformation; D015398:Signal Transduction; D019209:Troponin C / Q000737:chemistry* / Q000502:physiology
chemical_list: D002135:Calcium-Binding Proteins; D019209:Troponin C; D002118:Calcium