Chemistry revealed

Archaeopteryx feathers and bone chemistry fully revealed via synchrotron imaging.

Evolution of flight in maniraptoran dinosaurs is marked by the acquisition of distinct avian characters, such as feathers, as seen in Archaeopteryx from the Solnhofen limestone. These rare fossils were pivotal in confirming the dinosauria-avian lineage. One of the key derived avian characters is the possession of feathers, details of which were remarkably preserved in the Lagerstätte environmen...

The Nitrogen Chemistry of Titan’s Upper Atmosphere Revealed

Titan’s atmosphere is unique because dissociation of N2 and CH4, the primary atmospheric constituents, provides the H, C, and N atoms necessary for the synthesis of complex organic molecules. The first steps in the synthesis of organic molecules occur in the upper atmosphere where energetic photons and electrons dissociate N2 and CH 4. We determine the abundance of a suite of nitrogen-bearing m...

Properties of tetramethyleneethane ( TME ) as revealed by ion chemistry and ion photoelectron spectroscopy

Eileen P. Clifford, Paul G. Wenthold, W. Carl Lineberger, G. Barney Ellison, Cun X. Wang, Joseph J. Grabowski, Fernando Vila and Kenneth D. Jordan a Department of Chemistry & Biochemistry, University of Colorado, Boulder, CO 80309–0215, USA b JILA, University of Colorado and National Institute of Standards and Technology, and Department of Chemistry & Biochemistry, University of Colorado, Bould...

Biological and Physicochemical Functions of Ubiquitylation Revealed by Synthetic Chemistry Approaches

Most intracellular proteins are subjected to post-translational modification by ubiquitin. Accordingly, it is of fundamental importance to investigate the biological and physicochemical effects of ubiquitylation on substrate proteins. However, preparation of ubiquitylated proteins by an enzymatic synthesis bears limitations in terms of yield and site-specificity. Recently established chemical u...

Bioinorganic Chemistry Bioinorganic Chemistry