“…A number of methods, including biochemical, molecular and cellular approaches, have been developed to analyse these interactions, for example, yeast two-hybrid systems, mass spectrometry, bimolecular fluorescence complementation (BiFC), fluorescence resonance energy transfer analysis of crystal structure and the use of protein arrays in vitro and in vivo (Hu and Kerppola, 2003;Bracha-Drori et al, 2004;Kuroda et al, 2006;Lalonde et al, 2008). Moreover, information derived from genome sequences allows us to make accurate predictions about protein-protein interactions (von Mering et al, 2002;Park et al, 2009;Wu et al, 2009). Each method can yield false positives, so results of each method should be validated independently (Lalonde et al, 2008;Miernyk and Thelen, 2008).…”