Fig. 2From: Exploring the binding interactions of NOP receptor with designed natural phytochemical-neuropeptide conjugates: an in silico and SPR studyComparison of Sigma Profiles and Sigma Surfaces of (a) NPFF and its conjugates and (b) MiF-1 and its conjugates. Red indicates H-bond acceptor; green indicates non-polar and blue indicates H-bond donor regions on the sigma surfacesBack to article page