1pef | pdb_00001pef

PEPTIDE F (EQLLKALEFLLKELLEKL), AMPHIPHILIC OCTADECAPEPTIDE

spinqualitylabelsall models 1pef, resolution 1.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1pef is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Publication Abstract from PubMed X-ray diffraction analysis at 1.5 A resolution has confirmed the helical conformation of a de novo designed 18-residue peptide. However, the crystal structure reveals the formation of continuous molecular layers of parallel-packed amphiphilic helices as a result of much more extensive helix-helix interactions than predicted. The crystal packing arrangement, by virtue of distinct antiparallel packing interactions, segregates the polar and apolar surfaces of the helices into discrete and well-defined interfacial regions. An extensive "ridges-into-grooves" interdigitation characterizes the hydrophobic interface, whereas an extensive network of salt bridges and hydrogen bonds dominates the corresponding hydrophilic interface. A novel, multilayer structure of a helical peptide.,Taylor KS, Lou MZ, Chin TM, Yang NC, Garavito RM Protein Sci. 1996 Mar;5(3):414-21. PMID:8868477 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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