Barden J A
Department of Anatomy and Histology, University of Sydney, NSW, Australia.
Biochem Biophys Res Commun. 1995 Oct 4;215(1):264-71. doi: 10.1006/bbrc.1995.2461.
Human neuropeptide Y (NPY) analog ANA-NPY or [L17, Q19, A20, A23, L28, L31]NPY (13-36)-amide binds weakly to postjunctional receptors to raise blood pressure but binds tightly to prejunctional receptors to inhibit neurotransmitter release. ANA-NPY forms a well-conserved anti-parallel helical structure overlapping E23-Y36 with strong amphipathic character. The C-terminal portions of the monomers are better defined than the N-terminal ends. The N-terminal helices extend only from D16-E23/L24. The prejunctional receptor-specific binding site is confined within the C-terminal helices while the residues responsible for partial binding to the postjunctional receptors are located in the more disordered N-terminal segments.
