Fig. 5From: Transcriptional regulatory networks of methanol-independent protein expression in Pichia pastoris under the AOX1 promoter with trans-acting elements engineeringProtein–protein interaction (PPI) network. a PPI network with midnight-blue and green-yellow modules. b, c Sub-networks of PPI network, genes indicated in blue color from midnight blue module, representing down-regulated genes, and genes indicated green color from green-yellow module, representing up-regulated genesBack to article page