1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 Cai, Z. Xu, C. Xu, Y. Lu, W. Chi, C.W. Shi, Y. Wu, J. 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 C2 H5 N O2 75.067 y GLYCINE peptide linking C6 H13 N O2 131.173 y ISOLEUCINE L-peptide linking C6 H15 N2 O2 1 147.195 y LYSINE L-peptide linking C5 H11 N O2 S 149.211 y METHIONINE L-peptide linking C9 H11 N O2 165.189 y PHENYLALANINE L-peptide linking C3 H7 N O3 105.093 y SERINE 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 Biochemistry BICHAW 0033 0006-2960 43 3764 3771 10.1021/bi035412+ 15049683 Solution Structure of BmBKTx1, a New BK(Ca)(1) Channel Blocker from the Chinese Scorpion Buthus martensi Karsch(,). 2004 10.2210/pdb1q2k/pdb pdb_00001q2k 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 3348.018 Neurotoxin BmK37 1 syn polymer BmBKTx1 no no AACYSSDCRVKCVAMGFSSGKCINSKCKCYK AACYSSDCRVKCVAMGFSSGKCINSKCKCYK A 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 database_2 pdbx_nmr_software pdbx_struct_assembly pdbx_struct_oper_list repository Initial release Version format compliance Version format compliance Data collection Database references Derived calculations 1 0 2003-09-09 1 1 2008-04-29 1 2 2011-07-13 1 3 2022-03-02 _database_2.pdbx_DOI _database_2.pdbx_database_accession _pdbx_nmr_software.name RCSB Y PDBJ 2003-07-25 REL REL solid phase peptide synthesis sample the structures are based on a total of 322 restraints, 287 are NOE-derived distance constraints, 21 dihedral angle restraints, 14 distance restraints from hydrogen bonds structures with the lowest energy 100 21 2D NOESY 2D TOCSY DQF-COSY 2D TOCSY 5.0 1 atm 300 K 5.0 1 atm 292 K simulated annealing, energy minimization 1 minimized average structure 3mM BmBKTx1, 0.45ml of 90% H2O, 10% D2O (v/v); pH 5.0 0.45ml of 90% H2O, 10% D2O (v/v) 3mM BmBKTx1, 99.96% D2O 99.96% D2O structure solution CNS 1.0 Wuthrich, K data analysis XEASY 3.2 Peter Guntert data analysis DIANA 2.8 refinement CNS 1.0 500 Bruker DMX ALA 1 n 1 ALA 1 A ALA 2 n 2 ALA 2 A CYS 3 n 3 CYS 3 A TYR 4 n 4 TYR 4 A SER 5 n 5 SER 5 A SER 6 n 6 SER 6 A ASP 7 n 7 ASP 7 A CYS 8 n 8 CYS 8 A ARG 9 n 9 ARG 9 A VAL 10 n 10 VAL 10 A LYS 11 n 11 LYS 11 A CYS 12 n 12 CYS 12 A VAL 13 n 13 VAL 13 A ALA 14 n 14 ALA 14 A MET 15 n 15 MET 15 A GLY 16 n 16 GLY 16 A PHE 17 n 17 PHE 17 A SER 18 n 18 SER 18 A SER 19 n 19 SER 19 A GLY 20 n 20 GLY 20 A LYS 21 n 21 LYS 21 A CYS 22 n 22 CYS 22 A ILE 23 n 23 ILE 23 A ASN 24 n 24 ASN 24 A SER 25 n 25 SER 25 A LYS 26 n 26 LYS 26 A CYS 27 n 27 CYS 27 A LYS 28 n 28 LYS 28 A CYS 29 n 29 CYS 29 A TYR 30 n 30 TYR 30 A LYS 31 n 31 LYS 31 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 A N LYS 21 A N LYS 21 A O LYS 28 A O LYS 28 4 A A O H SER TYR 19 30 1.57 5 A A O H SER TYR 19 30 1.59 8 A A O H SER TYR 19 30 1.59 9 A A O H SER TYR 19 30 1.57 10 A A O H SER TYR 19 30 1.58 10 A A O H TYR CYS 4 8 1.59 12 A A O H SER TYR 19 30 1.59 13 A A O H SER TYR 19 30 1.57 14 A A O H SER TYR 19 30 1.58 14 A A O H TYR CYS 4 8 1.59 15 A A O H SER TYR 19 30 1.58 16 A A O H SER TYR 19 30 1.59 17 A A O H SER TYR 19 30 1.57 19 A A O H SER TYR 19 30 1.58 20 A A O H TYR CYS 4 8 1.60 21 A A O H SER TYR 19 30 1.59 1 A SER 19 165.66 -173.95 1 A ILE 23 -96.87 -146.24 1 A SER 25 -177.12 35.38 2 A SER 19 175.16 174.79 2 A ILE 23 -94.90 -137.38 2 A SER 25 -175.40 36.52 2 A TYR 30 -113.27 76.66 3 A SER 19 163.51 -175.43 3 A ILE 23 -97.26 -139.99 3 A SER 25 -177.06 32.45 4 A SER 19 158.59 -172.95 4 A ILE 23 -100.28 -144.26 4 A SER 25 -177.78 35.70 5 A SER 19 174.00 172.63 5 A ILE 23 -94.66 -136.45 5 A SER 25 -176.20 37.07 5 A TYR 30 -116.19 75.59 6 A SER 19 172.40 176.00 6 A ILE 23 -94.95 -138.08 6 A SER 25 -175.69 35.81 6 A TYR 30 -113.88 75.06 7 A SER 19 177.18 174.45 7 A ILE 23 -113.84 -149.15 7 A SER 25 -173.63 38.68 7 A TYR 30 -117.24 77.56 8 A SER 19 160.87 -174.22 8 A ILE 23 -101.56 -141.72 8 A SER 25 -177.04 32.27 9 A SER 19 161.66 -174.00 9 A ILE 23 -98.35 -149.65 9 A SER 25 -175.82 35.01 10 A SER 19 163.11 -174.01 10 A ILE 23 -111.49 -149.59 10 A SER 25 -175.05 37.32 11 A SER 19 164.52 -174.42 11 A ILE 23 -95.89 -141.55 11 A SER 25 -176.53 36.35 12 A SER 19 162.29 -174.01 12 A ILE 23 -100.67 -141.12 12 A SER 25 -177.17 33.46 13 A SER 19 163.13 -176.70 13 A ILE 23 -100.94 -143.47 13 A SER 25 -175.55 28.70 14 A SER 19 163.11 -174.01 14 A ILE 23 -111.49 -149.59 14 A SER 25 -175.05 37.32 15 A ALA 2 -64.76 86.22 15 A SER 19 160.64 -175.52 15 A ILE 23 -100.82 -149.50 15 A SER 25 -176.16 33.38 16 A SER 19 177.99 170.42 16 A ILE 23 -94.51 -134.75 16 A SER 25 -176.01 35.20 16 A TYR 30 -116.37 79.53 17 A SER 19 159.13 -174.46 17 A ILE 23 -96.60 -144.24 17 A SER 25 -177.40 35.80 18 A SER 19 177.64 177.31 18 A ILE 23 -94.98 -135.28 18 A SER 25 -176.67 34.63 18 A TYR 30 -114.53 76.38 19 A SER 19 162.82 -175.12 19 A ILE 23 -97.75 -143.89 19 A SER 25 -177.61 35.95 20 A SER 19 177.58 174.59 20 A ILE 23 -111.91 -152.17 20 A SER 25 -173.77 37.02 20 A TYR 30 -116.85 78.44 21 A SER 19 163.34 -173.83 21 A ILE 23 -103.66 -142.60 21 A SER 25 -177.62 32.69 minimized average Solution structure of BmBKTx1 a new potassium channel blocker from the Chinese Scorpion Buthus martensi Karsch 1 N N A TYR 4 A TYR 4 HELX_P A MET 15 A MET 15 1 1 12 disulf 2.029 A CYS 3 A SG CYS 3 1_555 A CYS 22 A SG CYS 22 1_555 disulf 2.025 A CYS 8 A SG CYS 8 1_555 A CYS 27 A SG CYS 27 1_555 disulf 2.032 A CYS 12 A SG CYS 12 1_555 A CYS 29 A SG CYS 29 1_555 TOXIN Alpha-helix, Beta-sheet, TOXIN SCBX_MESMA UNP 1 1 P83407 AACYSSDCRVKCVAMGFSSGKCINSKCKCYK 1 31 1Q2K 1 31 P83407 A 1 1 31 2 anti-parallel A GLY 20 A GLY 20 A CYS 22 A CYS 22 A CYS 27 A CYS 27 A CYS 29 A CYS 29