1ron

NMR SOLUTION STRUCTURE OF HUMAN NEUROPEPTIDE YNMR SOLUTION STRUCTURE OF HUMAN NEUROPEPTIDE Y

Structural highlights 1ron is a 1 chain structure. The May 2012 RCSB PDB Molecule of the Month feature on Leptin by David Goodsell is 10.2210/rcsb_pdb/mom_2012_5. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. NonStd Res: Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [NPY_HUMAN] NPY is implicated in the control of feeding and in secretion of gonadotrophin-release hormone. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The three-dimensional structure of synthetic human neuropeptide Y in aqueous solution at pH 3.2 and 37 degrees C was determined from two-dimensional 1H NMR data recorded at 600 MHz. A restraint set consisting of 440 interproton distance restraints inferred from NOEs and 11 backbone and 4 side-chain dihedral angle restraints derived from spin-spin coupling constants was used as input for distance geometry calculations on DIANA and simulated annealing and restrained energy minimization in X-PLOR. The final set of 26 structures is well defined in the region of residues 11-36, with a mean pairwise rmsd of 0.51 A for the backbone heavy atoms (N, C alpha and C) and 1.34 A for all heavy atoms. Residues 13-36 form an amphipathic alpha-helix. The N-terminal 10 residues are poorly defined relative to the helical region, although some elements of local structure are apparent. At least one of the three prolines in the N-terminal region co-exists in both cis and trans conformations. An additional set of 24 distances was interpreted as intermolecular distances within a dimer. A combination of distance geometry and restrained simulated annealing yielded a model of the dimer having antiparallel packing of two helical units, whose hydrophobic faces form a well-defined core. Sedimentation equilibrium experiments confirm the observation that neuropeptide Y associates to form dimers and higher aggregates under the conditions of the NMR experiments. Our results therefore support the structural features reported for porcine neuropeptide Y [Cowley, D.J. et al. (1992) Eur. J. Biochem., 205, 1099-1106] rather than the 'aPP' fold described previously for human neuropeptide Y [Darbon, H. et al. (1992) Eur. J. Biochem., 209, 765-771]. Solution structure of human neuropeptide Y.,Monks SA, Karagianis G, Howlett GJ, Norton RS J Biomol NMR. 1996 Dec;8(4):379-90. PMID:9008359 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

spinqualitylabelsall models 1ron, 26 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image