1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 Dutton, J.L. Bansal, P.S. Hogg, R.C. Adams, D.J. Alewood, P.F. Craik, D.J. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic C3 H7 N O2 89.093 y ALANINE L-peptide linking C4 H8 N2 O3 132.118 y ASPARAGINE L-peptide linking C4 H7 N O4 133.103 y ASPARTIC ACID L-peptide linking C3 H7 N O2 S 121.158 y CYSTEINE L-peptide linking C2 H5 N O2 75.067 y GLYCINE peptide linking H2 N 16.023 AMINO GROUP non-polymer C9 H11 N O2 165.189 y PHENYLALANINE L-peptide linking C5 H9 N O2 115.130 y PROLINE L-peptide linking C3 H7 N O3 105.093 y SERINE L-peptide linking C4 H9 N O3 119.119 y THREONINE L-peptide linking C9 H11 N O3 181.189 y TYROSINE L-peptide linking US J.Biol.Chem. JBCHA3 0071 0021-9258 277 48849 48857 10.1074/jbc.M208842200 12376538 A New Level of Conotoxin Diversity, a Non-native Disulfide Bond Connectivity in alpha -Conotoxin AuIB Reduces Structural Definition but Increases Biological Activity. 2002 10.2210/pdb1mxp/pdb pdb_00001mxp 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 1 SINGLE WAVELENGTH M 1 1.0 1575.788 alpha-conotoxin AuIB 1 syn polymer no yes GCCSYPPCFATNPDC(NH2) GCCSYPPCFATNPDCX A polypeptide(L) n n n n n n n n n n n n n n n n database_2 pdbx_nmr_software pdbx_struct_assembly pdbx_struct_oper_list struct_conn struct_site repository Initial release Version format compliance Version format compliance Data collection Database references Derived calculations 1 0 2002-12-30 1 1 2008-04-28 1 2 2011-07-13 1 3 2022-02-23 _database_2.pdbx_DOI _database_2.pdbx_database_accession _pdbx_nmr_software.name _struct_conn.pdbx_leaving_atom_flag _struct_site.pdbx_auth_asym_id _struct_site.pdbx_auth_comp_id _struct_site.pdbx_auth_seq_id 1MXN contains Solution structure of the same protein with native disulfide bond connectivity RCSB Y PDBJ 2002-10-03 REL REL The peptide was synthesised by BOC chemistry. sample structures with the least restraint violations,structures with the lowest energy 50 20 2D NOESY 2D TOCSY DQF-COSY E-COSY 2D NOESY 2D TOCSY 3.5 atmospheric atm 280 K 140 noe restraints were used including 4 long and 13 medium range noes, also 3 dihedral angles were included simulated annealing, molecular dynamics, energy minimisation in a CHARM force field 7 closest to the average 2mM ribbon AuIB peptide 90% H2O/10% D2O 2mM ribbon AuIB peptide 100% D2O Bruker collection XwinNMR 2.6 Bruker processing XwinNMR 2.6 Brunger refinement X-PLOR 3.851 then 3.1f Brunger structure solution X-PLOR 3.851 then 3.1f 750 Bruker DMX 500 Bruker ARX GLY 1 n 1 GLY 1 A CYS 2 n 2 CYS 2 A CYS 3 n 3 CYS 3 A SER 4 n 4 SER 4 A TYR 5 n 5 TYR 5 A PRO 6 n 6 PRO 6 A PRO 7 n 7 PRO 7 A CYS 8 n 8 CYS 8 A PHE 9 n 9 PHE 9 A ALA 10 n 10 ALA 10 A THR 11 n 11 THR 11 A ASN 12 n 12 ASN 12 A PRO 13 n 13 PRO 13 A ASP 14 n 14 ASP 14 A CYS 15 n 15 CYS 15 A CYS 15 n 16 NH2 16 A author_defined_assembly 1 monomeric 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 1_555 x,y,z identity operation 0.0000000000 0.0000000000 0.0000000000 1 A A ASN PRO 12 13 149.44 1 8.42 1.10 114.20 122.62 A A A CA CB SG CYS CYS CYS 2 2 2 N 1 12.76 1.10 114.20 126.96 A A A CA CB SG CYS CYS CYS 3 3 3 N 5 8.09 1.10 114.20 122.29 A A A CA CB SG CYS CYS CYS 3 3 3 N 5 6.99 1.10 114.20 121.19 A A A CA CB SG CYS CYS CYS 8 8 8 N 7 7.49 1.10 114.20 121.69 A A A CA CB SG CYS CYS CYS 3 3 3 N 7 6.83 1.10 114.20 121.03 A A A CA CB SG CYS CYS CYS 15 15 15 N 9 10.18 1.10 114.20 124.38 A A A CA CB SG CYS CYS CYS 3 3 3 N 9 9.41 1.10 114.20 123.61 A A A CA CB SG CYS CYS CYS 8 8 8 N 11 6.63 1.10 114.20 120.83 A A A CA CB SG CYS CYS CYS 15 15 15 N 13 10.04 1.10 114.20 124.24 A A A CA CB SG CYS CYS CYS 3 3 3 N 13 7.06 1.10 114.20 121.26 A A A CA CB SG CYS CYS CYS 8 8 8 N 15 7.24 1.10 114.20 121.44 A A A CA CB SG CYS CYS CYS 15 15 15 N 17 7.22 1.10 114.20 121.42 A A A CA CB SG CYS CYS CYS 3 3 3 N 17 7.95 1.10 114.20 122.15 A A A CA CB SG CYS CYS CYS 8 8 8 N 19 7.21 1.10 114.20 121.41 A A A CA CB SG CYS CYS CYS 8 8 8 N 1 A PHE 9 -67.13 -73.22 1 A THR 11 -169.30 30.28 1 A ASP 14 -165.03 56.85 2 A PHE 9 -90.39 48.09 2 A ALA 10 -49.73 -18.47 2 A THR 11 -83.97 35.45 3 A ALA 10 -49.47 -72.01 4 A PHE 9 -60.05 -114.68 4 A ASP 14 -91.82 54.29 5 A CYS 2 -170.68 -54.41 5 A ASN 12 116.94 -45.25 6 A CYS 2 -76.57 -133.51 7 A CYS 2 -58.31 -79.35 7 A PHE 9 -68.76 80.84 7 A ALA 10 -49.60 -19.71 8 A PHE 9 -69.83 -127.12 8 A ALA 10 -80.24 -89.58 8 A THR 11 172.96 56.10 8 A ASP 14 -87.98 43.69 9 A ASN 12 -163.64 -45.51 9 A ASP 14 -176.70 34.17 10 A PHE 9 -66.67 -120.21 10 A THR 11 37.69 45.86 10 A ASP 14 -88.19 42.24 12 A ALA 10 -48.91 83.56 12 A ASN 12 110.11 -53.66 13 A CYS 2 -171.64 -63.32 13 A ASP 14 153.43 83.20 14 A CYS 2 -55.95 -78.01 14 A CYS 3 -106.37 78.78 14 A ALA 10 -55.22 -81.77 14 A THR 11 -145.02 59.78 15 A CYS 2 -163.27 -98.20 15 A ALA 10 -52.16 77.56 15 A THR 11 26.08 52.72 16 A CYS 2 -57.59 -79.90 16 A PHE 9 -69.04 -124.12 16 A ALA 10 -79.33 -89.87 16 A THR 11 165.52 61.98 17 A CYS 2 -167.56 -48.67 17 A ALA 10 -49.18 -77.96 17 A THR 11 -178.65 35.39 17 A ASP 14 157.24 80.91 18 A PHE 9 -65.18 -105.69 18 A ASP 14 -109.93 49.26 19 A CYS 3 -48.32 168.21 19 A SER 4 -139.81 -40.03 19 A ALA 10 -49.85 -18.86 19 A THR 11 -84.24 36.10 19 A ASP 14 -165.51 103.70 20 A CYS 2 57.86 4.56 20 A PHE 9 -83.15 -137.08 20 A ASN 12 -154.53 -39.25 20 A ASP 14 -162.38 101.49 Solution structure of the ribbon disulfide bond isomer of alpha-conotoxin AuIB 1 N N disulf 2.029 A CYS 2 A SG CYS 2 1_555 A CYS 15 A SG CYS 15 1_555 disulf 2.023 A CYS 3 A SG CYS 3 1_555 A CYS 8 A SG CYS 8 1_555 covale 1.304 both A CYS 15 A C CYS 15 1_555 A NH2 16 A N NH2 16 1_555 TOXIN turns, TOXIN CXA2_CONAL UNP 1 1 P56640 GCCSYPPCFATNPDC 1 15 1MXP 1 15 P56640 A 1 1 15 BINDING SITE FOR RESIDUE NH2 A 16 A NH2 16 Software 2 A PHE 9 A PHE 9 2 1_555 A CYS 15 A CYS 15 2 1_555