Twists and turns

Twists and turns in the body: an imaging spectrum.

Life is full of twists and turns. These surprises can sometimes be wonderfully invigorating. Twists and turns can also occur in the body, however, sometimes with dangerous consequences. Torsion and volvulus are important causes of acute abdominal pain. The clinical symptoms and signs associated with torsion and volvulus are often non-specific and are difficult to diagnose clinically. Clinicians...

The twists and turns of enzyme function.

Twists and turns in the search for the elusive renin processing enzyme. Editorial Focus on “Cathepsin B is not the processing enzyme for mouse prorenin”

A Note on Twists of (y^2=x^3+1)

‎‎In the category of Mordell curves (E_D:y^2=x^3+D) with nontrivial torsion groups we find curves of the generic rank two as quadratic twists of (E_1), ‎and of the generic rank at least two and at least three as cubic twists of (E_1). ‎Previous work‎, ‎in the category of Mordell curves with trivial torsion groups‎, ‎has found infinitely many elliptic curves with ...

Regulation of Plexin: A Ring of Structural Twists and Turns

The regulation of the guidance receptor plexin is incompletely understood. In this issue, Kong et al. (2016) present crystal structures of the full-length extracellular region of class A plexins, revealing its dual role in both autoinhibition and activation.