phospholipase A2. Mike Tyka is a computational biochemist at the University of Washington working with David Baker. Tyka has been making sculptures of protein molecules since 2010 from copper and steel, including ubiquitin and a potassium channel tetramer. See also 310 helix Beta sheet Davydov soliton Folding (chemistry) Knobs into holes packing Pi helix References Further reading . External links NetSurfP ver. 1.1 – Protein Surface Accessibility and Secondary Structure Predictions α-helix rotational angle calculator Artist Julie Newdoll's website Artist Julian Voss-Andreae's website Protein structural motifs Helices