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 Erik L. L. Sonnhammer Sean R. Eddy Alex Bateman Robert D. Finn The Pfam protein families database. 290-301 2012 40 Nucleic Acids Research Database-Issue http://dx.doi.org/10.1093/nar/gkr1065 db/journals/nar/nar40.html#PuntaCEMTBPFCCHHSEBF12