Predicting the conformations of peptides and proteins in early evolution. A review article submitted to Biology Direct-0

<p><b>Copyright information:</b></p><p>Taken from "Predicting the conformations of peptides and proteins in early evolution. A review article submitted to Biology Direct"</p><p>http://www.biology-direct.com/content/3/1/3</p><p>Biology Direct 2008;3():3-3.</p><p>Published online 28 Jan 2008</p><p>PMCID:PMC2241844.</p><p></p>, rust; nitrogen blue; phosphorus, orange; sulphur, yellow; nickel, brown; potassium, purple. α-helix β-strand, as in polyproline type II helix RL nest phosphate bound to LRLR nest FeSbound to RLRLR nest α-strand, as in Nickel-tetraglycine [62] β-sheet A row of potassium ions bound at the selectivity filter of the potassium channel; only two of the four polypeptides are shown. A row of waters (hydrogens not shown) bound to part of the aquaporin channel α-sheet, made from strands as in , a possible early membrane