title: Assignment of the 1H nuclear magnetic resonance spectrum of the trypsin inhibitor homologue K from Dendroaspis polylepis polylepis. Two-dimensional nuclear magnetic resonance at 360 and 500 MHz.
abstract: The assignment of the 1H nuclear magnetic resonance (n.m.r.) spectrum of the trypsin inhibitor homologue K from the venom of Dendroaspis polylepis polylepis is described and documented. The assignments are based entirely on the amino acid sequence and on 2-dimensional n.m.r. experiments at 360 and 500 M Hz. Individual assignments were obtained for the backbone and C beta protons of all 57 residues of the inhibitor homologue K, with the exceptions of the N-terminal amino group, the amide protons of Arg16, Gly37 and Gly40 and the C beta protons of Arg16 and Pro19. The assignments for the non-labile protons of the amino acid side-chains are complete, with the exception of Gln29, Glu49 and all the proline, lysine and arginine residues. For Asn and Trp the labile side-chain protons have also been assigned. The chemical shifts for the assigned resonances are listed for an aqueous solution at 50 degrees C and pH 3.4.
mesh_terms: D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D000818:Animals; D004546:Elapid Venoms / Q000032:analysis*; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy; D011489:Protein Denaturation; D014361:Trypsin Inhibitors / Q000032:analysis*
chemical_list: D000596:Amino Acids; D004546:Elapid Venoms; D014361:Trypsin Inhibitors