The Pfam protein families database. - Marco Punta; Penny C. Coggill; Ruth Y. Eberhardt; Jaina Mistry; John G. Tate; Chris Boursnell; Ningze Pang; Kristoffer Forslund; Goran Ceric; Jody Clements; Andreas Heger; Liisa Holm; et al. (Nucleic Acids Res., 2012)