@article {2902,
	title = {On the Evolution of Protein Folds: Are Similar Motifs in Different Protein Folds the Result of Convergence, Insertion, or Relics of an Ancient Peptide World?},
	journal = {Journal of Structural Biology},
	volume = {134},
	year = {2001},
	pages = {191-203},
	author = {Lupas, Andrei N. and Ponting, Chris P. and Russell, Robert B.}
}
