1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 Zeng, H. Hawrot, E. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic C3 H7 N O2 89.093 y ALANINE L-peptide linking C6 H15 N4 O2 1 175.209 y ARGININE 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 C5 H10 N2 O3 146.144 y GLUTAMINE L-peptide linking C2 H5 N O2 75.067 y GLYCINE peptide linking C6 H10 N3 O2 1 156.162 y HISTIDINE L-peptide linking C4 H7 N O2 101.104 n HOMOSERINE LACTONE L-peptide linking C6 H13 N O2 131.173 y ISOLEUCINE L-peptide linking C6 H13 N O2 131.173 y LEUCINE L-peptide linking C6 H15 N2 O2 1 147.195 y LYSINE L-peptide linking 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 C11 H12 N2 O2 204.225 y TRYPTOPHAN L-peptide linking C9 H11 N O3 181.189 y TYROSINE L-peptide linking C5 H11 N O2 117.146 y VALINE L-peptide linking US J.Biol.Chem. JBCHA3 0071 0021-9258 277 37439 37445 10.1074/jbc.M205483200 12133834 NMR-based Binding Screen and Structural Analysis of the Complex Formed between alpha-Cobratoxin and an 18-mer Cognate Peptide Derived from the alpha1 Subunit of the Nicotinic Acetylcholine Receptor from Torpedo californica 2002 10.2210/pdb1lxh/pdb pdb_00001lxh 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 7842.094 LONG NEUROTOXIN 1 1 nat polymer 2424.732 ACETYLCHOLINE RECEPTOR PROTEIN, ALPHA CHAIN 1 man polymer NEUROTOXIN 3, ALPHA-COBRATOXIN no no IRCFITPDITSKDCPNGHVCYTKTWCDAFCSIRGKRVDLGCAATCPTVKTGVDIQCCSTDNCNPFPTRKRP IRCFITPDITSKDCPNGHVCYTKTWCDAFCSIRGKRVDLGCAATCPTVKTGVDIQCCSTDNCNPFPTRKRP A polypeptide(L) no yes YRGWKHWVYYTCCPDTPY(HSL) YRGWKHWVYYTCCPDTPYS B polypeptide(L) n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n Pacific electric ray Torpedo Escherichia Escherichia coli sample 7787 Torpedo californica 469008 Escherichia coli BL21(DE3) BL21 (DE3) PLASMID PET-31B(+) monocled cobra Naja sample 8649 Naja kaouthia database_2 pdbx_nmr_software pdbx_nmr_spectrometer pdbx_struct_assembly pdbx_struct_oper_list struct_ref_seq_dif repository Initial release Version format compliance Version format compliance Data collection Database references Derived calculations 1 0 2002-11-20 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 _pdbx_nmr_spectrometer.model _struct_ref_seq_dif.details 1lxg is the structure ensemble RCSB Y RCSB 2002-06-05 REL 1 HSQC 3D TOCSY-HSQC 3D NOESY-HSQC HNHA 2D TOCSY 2D NOESY NULL 4.0 AMBIENT 308 K distance geometry and simulated annealing 1 minimized average structure 1.6 mM alpha-cobratoxin/alpha18-mer complex, alpha18-mer is U-15N, 50 mM perdeuterated potassium acetate buffer (pH 4.0) with 5% D2O and 0.05% sodium azide 95% H2O/5% D2O Bruker collection XwinNMR 3.0 Delaglio, F. et al. processing NMRPipe 1.8 Goddard, T.D. et al. data analysis Sparky 3.95 Brunger, A.T. et al. refinement CNS 1.1 600 Bruker AVANCE ILE 1 n 1 ILE 1 A ARG 2 n 2 ARG 2 A CYS 3 n 3 CYS 3 A PHE 4 n 4 PHE 4 A ILE 5 n 5 ILE 5 A THR 6 n 6 THR 6 A PRO 7 n 7 PRO 7 A ASP 8 n 8 ASP 8 A ILE 9 n 9 ILE 9 A THR 10 n 10 THR 10 A SER 11 n 11 SER 11 A LYS 12 n 12 LYS 12 A ASP 13 n 13 ASP 13 A CYS 14 n 14 CYS 14 A PRO 15 n 15 PRO 15 A ASN 16 n 16 ASN 16 A GLY 17 n 17 GLY 17 A HIS 18 n 18 HIS 18 A VAL 19 n 19 VAL 19 A CYS 20 n 20 CYS 20 A TYR 21 n 21 TYR 21 A THR 22 n 22 THR 22 A LYS 23 n 23 LYS 23 A THR 24 n 24 THR 24 A TRP 25 n 25 TRP 25 A CYS 26 n 26 CYS 26 A ASP 27 n 27 ASP 27 A ALA 28 n 28 ALA 28 A PHE 29 n 29 PHE 29 A CYS 30 n 30 CYS 30 A SER 31 n 31 SER 31 A ILE 32 n 32 ILE 32 A ARG 33 n 33 ARG 33 A GLY 34 n 34 GLY 34 A LYS 35 n 35 LYS 35 A ARG 36 n 36 ARG 36 A VAL 37 n 37 VAL 37 A ASP 38 n 38 ASP 38 A LEU 39 n 39 LEU 39 A GLY 40 n 40 GLY 40 A CYS 41 n 41 CYS 41 A ALA 42 n 42 ALA 42 A ALA 43 n 43 ALA 43 A THR 44 n 44 THR 44 A CYS 45 n 45 CYS 45 A PRO 46 n 46 PRO 46 A THR 47 n 47 THR 47 A VAL 48 n 48 VAL 48 A LYS 49 n 49 LYS 49 A THR 50 n 50 THR 50 A GLY 51 n 51 GLY 51 A VAL 52 n 52 VAL 52 A ASP 53 n 53 ASP 53 A ILE 54 n 54 ILE 54 A GLN 55 n 55 GLN 55 A CYS 56 n 56 CYS 56 A CYS 57 n 57 CYS 57 A SER 58 n 58 SER 58 A THR 59 n 59 THR 59 A ASP 60 n 60 ASP 60 A ASN 61 n 61 ASN 61 A CYS 62 n 62 CYS 62 A ASN 63 n 63 ASN 63 A PRO 64 n 64 PRO 64 A PHE 65 n 65 PHE 65 A PRO 66 n 66 PRO 66 A THR 67 n 67 THR 67 A ARG 68 n 68 ARG 68 A LYS 69 n 69 LYS 69 A ARG 70 n 70 ARG 70 A PRO 71 n 71 PRO 71 A TYR 181 n 1 TYR 181 B ARG 182 n 2 ARG 182 B GLY 183 n 3 GLY 183 B TRP 184 n 4 TRP 184 B LYS 185 n 5 LYS 185 B HIS 186 n 6 HIS 186 B TRP 187 n 7 TRP 187 B VAL 188 n 8 VAL 188 B TYR 189 n 9 TYR 189 B TYR 190 n 10 TYR 190 B THR 191 n 11 THR 191 B CYS 192 n 12 CYS 192 B CYS 193 n 13 CYS 193 B PRO 194 n 14 PRO 194 B ASP 195 n 15 ASP 195 B THR 196 n 16 THR 196 B PRO 197 n 17 PRO 197 B TYR 198 n 18 TYR 198 B n 19 199 B author_defined_assembly 2 dimeric 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 A N THR 24 A N THR 24 A O ASP 53 A O ASP 53 1 B HSL 199 B HSL 19 1 Y 1 B ARG 182 0.093 SIDE CHAIN 1 14.23 2.00 110.40 124.63 B B B CB CA C ARG ARG ARG 182 182 182 N 1 A ARG 2 -3.44 62.66 1 A PHE 4 98.60 -159.61 1 A PRO 7 -72.42 -154.33 1 A ILE 9 110.06 -126.57 1 A THR 10 -159.14 -50.34 1 A SER 11 -39.78 -74.64 1 A CYS 14 -36.13 122.22 1 A HIS 18 -156.09 -45.31 1 A THR 22 -46.84 67.75 1 A ASP 27 69.85 -65.64 1 A ALA 28 -164.40 -45.67 1 A CYS 30 85.27 77.18 1 A ARG 33 12.46 -64.75 1 A LYS 35 -35.35 146.40 1 A VAL 37 59.16 -178.83 1 A ASP 38 -13.86 127.00 1 A LEU 39 -139.44 -54.03 1 A CYS 41 95.66 81.99 1 A ALA 42 -168.58 -167.35 1 A THR 44 56.59 -179.03 1 A THR 47 -144.42 -66.76 1 A LYS 49 -179.48 -153.43 1 A THR 50 54.09 -141.10 1 A GLN 55 -96.50 53.52 1 A SER 58 -97.32 43.16 1 A ASN 61 -109.17 52.99 1 A ASN 63 162.88 82.38 1 A PHE 65 85.21 125.34 1 A PRO 66 -67.44 36.38 1 A ARG 68 -116.39 -103.73 1 A ARG 70 -151.31 -55.33 1 B ARG 182 68.17 -111.48 1 B TRP 184 -76.17 -126.26 1 B VAL 188 -154.90 -69.79 1 B TYR 189 35.58 111.14 1 B TYR 190 108.59 9.15 1 B THR 191 74.51 146.49 1 B CYS 192 168.69 -41.40 1 B CYS 193 -151.81 -153.81 1 B PRO 194 -61.54 -153.67 minimized average Solution structure of alpha-cobratoxin complexed with a cognate peptide (minimized average structure) 1 N N 2 N N disulf 2.041 A CYS 3 A SG CYS 3 1_555 A CYS 20 A SG CYS 20 1_555 disulf 2.016 A CYS 14 A SG CYS 14 1_555 A CYS 41 A SG CYS 41 1_555 disulf 2.039 A CYS 26 A SG CYS 26 1_555 A CYS 30 A SG CYS 30 1_555 disulf 2.029 A CYS 45 A SG CYS 45 1_555 A CYS 56 A SG CYS 56 1_555 disulf 2.029 A CYS 57 A SG CYS 57 1_555 A CYS 62 A SG CYS 62 1_555 disulf 2.060 B CYS 192 B SG CYS 12 1_555 B CYS 193 B SG CYS 13 1_555 TOXIN toxin, alpha-cobratoxin, nicotinic acetylcholine receptor, protein-protein interaction NXL1_NAJKA UNP 1 1 P01391 IRCFITPDITSKDCPNGHVCYTKTWCDAFCSIRGKRVDLGCAATCPTVKTGVDIQCCSTDNCNPFPTRKRP ACHA_TORCA UNP 2 205 P02710 YRGWKHWVYYTCCPDTPY 1 71 1LXH 1 71 P01391 A 1 1 71 205 222 1LXH 181 198 P02710 B 2 1 18 2 cloning artifact HSL 199 1LXH B P02710 UNP 19 2 anti-parallel A CYS 20 A CYS 20 A TRP 25 A TRP 25 A VAL 52 A VAL 52 A CYS 57 A CYS 57