Isabelle Callebaut Jean Paul Mornon Philippe Monget Isolated ZP-N domains constitute the N-terminal extensions of Zona Pellucida proteins. 1871-1874 2007 23 Bioinformatics 15 http://dx.doi.org/10.1093/bioinformatics/btm265 db/journals/bioinformatics/bioinformatics23.html#CallebautMM07