1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 Blanc, E. Romi-Lebrun, R. Bornet, O. Nakajima, T. Darbon, H. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 1 90.00 90.00 90.00 1.000 1.000 1.000 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 H15 N2 O2 1 147.195 y LYSINE L-peptide linking C5 H11 N O2 S 149.211 y METHIONINE L-peptide linking C5 H7 N O3 129.114 n PYROGLUTAMIC ACID 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 Biochemistry BICHAW 0033 0006-2960 37 12412 12418 10.1021/bi9809371 9730813 Solution structure of two new toxins from the venom of the Chinese scorpion Buthus martensi Karsch blockers of potassium channels. 1998 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 4182.978 TOXIN BMTX1 1 man polymer no yes (PCA)FTDVKCTGSKQCWPVCKQMFGKPNGKCMNGKCRCYS QFTDVKCTGSKQCWPVCKQMFGKPNGKCMNGKCRCYS 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 n n n n n n Chinese scorpion Mesobuthus sample 34649 Mesobuthus martensii entity_poly pdbx_database_status pdbx_struct_assembly pdbx_struct_mod_residue pdbx_struct_oper_list struct_conn repository Initial release Version format compliance Version format compliance Derived calculations Other Polymer sequence 1 0 1999-01-13 1 1 2008-03-24 1 2 2011-07-13 2 0 2019-12-25 _entity_poly.pdbx_seq_one_letter_code_can _pdbx_database_status.process_site _pdbx_struct_mod_residue.parent_comp_id _struct_conn.pdbx_leaving_atom_flag Y BNL 1998-06-16 REL LEAST RESTRAINT VIOLATION 25 25 NOESY TOCSY COSY 3 300 K 10,000 ITERATIONS OF THE POWELL ALGORITHM WITH CHARMM FORCE FIELD distance geometry 1 WATER BRUNGER refinement X-PLOR 3.84 structure solution DIANA 500 Bruker DRX500 5HP 1 n 1 PCA 1 A PHE 2 n 2 PHE 2 A THR 3 n 3 THR 3 A ASP 4 n 4 ASP 4 A VAL 5 n 5 VAL 5 A LYS 6 n 6 LYS 6 A CYS 7 n 7 CYS 7 A THR 8 n 8 THR 8 A GLY 9 n 9 GLY 9 A SER 10 n 10 SER 10 A LYS 11 n 11 LYS 11 A GLN 12 n 12 GLN 12 A CYS 13 n 13 CYS 13 A TRP 14 n 14 TRP 14 A PRO 15 n 15 PRO 15 A VAL 16 n 16 VAL 16 A CYS 17 n 17 CYS 17 A LYS 18 n 18 LYS 18 A GLN 19 n 19 GLN 19 A MET 20 n 20 MET 20 A PHE 21 n 21 PHE 21 A GLY 22 n 22 GLY 22 A LYS 23 n 23 LYS 23 A PRO 24 n 24 PRO 24 A ASN 25 n 25 ASN 25 A GLY 26 n 26 GLY 26 A LYS 27 n 27 LYS 27 A CYS 28 n 28 CYS 28 A MET 29 n 29 MET 29 A ASN 30 n 30 ASN 30 A GLY 31 n 31 GLY 31 A LYS 32 n 32 LYS 32 A CYS 33 n 33 CYS 33 A ARG 34 n 34 ARG 34 A CYS 35 n 35 CYS 35 A TYR 36 n 36 TYR 36 A SER 37 n 37 SER 37 A author_defined_assembly 1 monomeric A PCA 1 PYROGLUTAMIC ACID A PCA 1 GLN 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 1_555 identity operation 0.0000000000 0.0000000000 0.0000000000 A O LYS 27 A O LYS 27 A N ARG 34 A N ARG 34 1 A ARG 34 0.252 SIDE CHAIN 2 A ARG 34 0.315 SIDE CHAIN 3 A ARG 34 0.265 SIDE CHAIN 4 A ARG 34 0.241 SIDE CHAIN 5 A ARG 34 0.309 SIDE CHAIN 6 A ARG 34 0.312 SIDE CHAIN 7 A ARG 34 0.314 SIDE CHAIN 8 A ARG 34 0.307 SIDE CHAIN 9 A ARG 34 0.257 SIDE CHAIN 10 A ARG 34 0.294 SIDE CHAIN 11 A ARG 34 0.204 SIDE CHAIN 12 A ARG 34 0.284 SIDE CHAIN 13 A ARG 34 0.235 SIDE CHAIN 14 A ARG 34 0.209 SIDE CHAIN 15 A ARG 34 0.311 SIDE CHAIN 16 A ARG 34 0.317 SIDE CHAIN 17 A ARG 34 0.241 SIDE CHAIN 18 A ARG 34 0.225 SIDE CHAIN 19 A ARG 34 0.308 SIDE CHAIN 20 A ARG 34 0.312 SIDE CHAIN 21 A ARG 34 0.312 SIDE CHAIN 22 A ARG 34 0.310 SIDE CHAIN 23 A ARG 34 0.167 SIDE CHAIN 24 A ARG 34 0.306 SIDE CHAIN 25 A ARG 34 0.310 SIDE CHAIN 1 -6.96 1.00 110.10 103.14 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 1 8.08 0.90 109.00 117.08 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 1 7.70 1.10 130.40 138.10 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 1 -4.02 0.60 121.00 116.98 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 2 -6.96 1.00 110.10 103.14 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 2 8.15 0.90 109.00 117.15 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 2 7.51 1.10 130.40 137.91 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 2 7.29 1.10 114.20 121.49 A A A CA CB SG CYS CYS CYS 33 33 33 N 2 -4.37 0.60 121.00 116.63 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 3 -7.02 1.00 110.10 103.08 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 3 8.16 0.90 109.00 117.16 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 3 7.56 1.10 130.40 137.96 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 3 7.73 1.10 114.20 121.93 A A A CA CB SG CYS CYS CYS 33 33 33 N 3 -6.37 0.60 121.00 114.63 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 3 5.31 0.60 121.00 126.31 A A A CB CG CD1 TYR TYR TYR 36 36 36 N 4 -6.84 1.00 110.10 103.26 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 4 7.91 0.90 109.00 116.91 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 4 7.53 1.10 130.40 137.93 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 4 8.04 1.10 114.20 122.24 A A A CA CB SG CYS CYS CYS 33 33 33 N 4 7.44 1.10 114.20 121.64 A A A CA CB SG CYS CYS CYS 35 35 35 N 4 -6.10 0.60 121.00 114.90 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 4 4.73 0.60 121.00 125.73 A A A CB CG CD1 TYR TYR TYR 36 36 36 N 5 -6.91 1.00 110.10 103.19 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 5 7.96 0.90 109.00 116.96 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 5 7.44 1.10 130.40 137.84 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 5 6.86 1.10 114.20 121.06 A A A CA CB SG CYS CYS CYS 33 33 33 N 5 -4.70 0.60 121.00 116.30 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 6 -7.09 1.00 110.10 103.01 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 6 8.19 0.90 109.00 117.19 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 6 7.51 1.10 130.40 137.91 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 6 8.62 1.10 114.20 122.82 A A A CA CB SG CYS CYS CYS 33 33 33 N 6 -6.36 0.60 121.00 114.64 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 6 5.18 0.60 121.00 126.18 A A A CB CG CD1 TYR TYR TYR 36 36 36 N 7 -6.67 1.00 110.10 103.43 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 7 7.82 0.90 109.00 116.82 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 7 8.04 1.10 130.40 138.44 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 7 -6.09 1.00 107.30 101.21 A A A NE1 CE2 CD2 TRP TRP TRP 14 14 14 N 7 7.66 1.10 114.20 121.86 A A A CA CB SG CYS CYS CYS 35 35 35 N 8 -6.71 1.00 110.10 103.39 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 8 7.76 0.90 109.00 116.76 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 8 7.52 1.10 130.40 137.92 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 8 6.68 1.10 114.20 120.88 A A A CA CB SG CYS CYS CYS 33 33 33 N 8 -3.76 0.60 121.00 117.24 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 9 -6.97 1.00 110.10 103.13 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 9 7.99 0.90 109.00 116.99 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 9 7.44 1.10 130.40 137.84 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 9 7.09 1.10 114.20 121.29 A A A CA CB SG CYS CYS CYS 35 35 35 N 9 -4.58 0.60 121.00 116.42 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 10 -6.54 1.00 110.10 103.56 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 10 7.69 0.90 109.00 116.69 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 10 7.62 1.10 130.40 138.02 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 11 -6.96 1.00 110.10 103.14 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 11 8.09 0.90 109.00 117.09 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 11 7.86 1.10 130.40 138.26 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 11 -6.04 1.00 107.30 101.26 A A A NE1 CE2 CD2 TRP TRP TRP 14 14 14 N 11 -4.56 0.60 121.00 116.44 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 12 -6.84 1.00 110.10 103.26 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 12 7.92 0.90 109.00 116.92 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 12 7.88 1.10 130.40 138.28 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 13 -6.79 1.00 110.10 103.31 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 13 7.92 0.90 109.00 116.92 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 13 7.91 1.10 130.40 138.31 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 13 -3.71 0.60 121.00 117.29 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 14 -6.78 1.00 110.10 103.32 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 14 7.95 0.90 109.00 116.95 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 14 7.73 1.10 130.40 138.13 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 14 8.13 1.10 114.20 122.33 A A A CA CB SG CYS CYS CYS 35 35 35 N 14 -4.51 0.60 121.00 116.49 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 15 -6.56 1.00 110.10 103.54 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 15 7.77 0.90 109.00 116.77 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 15 7.91 1.10 130.40 138.31 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 15 7.10 1.10 114.20 121.30 A A A CA CB SG CYS CYS CYS 33 33 33 N 16 7.06 1.10 114.20 121.26 A A A CA CB SG CYS CYS CYS 7 7 7 N 16 -6.86 1.00 110.10 103.24 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 16 7.90 0.90 109.00 116.90 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 16 7.65 1.10 130.40 138.05 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 16 7.95 1.10 114.20 122.15 A A A CA CB SG CYS CYS CYS 35 35 35 N 17 -6.84 1.00 110.10 103.26 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 17 8.06 0.90 109.00 117.06 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 17 7.94 1.10 130.40 138.34 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 17 -6.17 1.00 107.30 101.13 A A A NE1 CE2 CD2 TRP TRP TRP 14 14 14 N 17 7.16 1.10 114.20 121.36 A A A CA CB SG CYS CYS CYS 33 33 33 N 17 -4.46 0.60 121.00 116.54 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 18 -6.42 1.00 110.10 103.68 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 18 7.84 0.90 109.00 116.84 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 18 8.24 1.10 130.40 138.64 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 18 -6.29 1.00 107.30 101.01 A A A NE1 CE2 CD2 TRP TRP TRP 14 14 14 N 19 -6.46 1.00 110.10 103.64 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 19 7.65 0.90 109.00 116.65 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 19 8.10 1.10 130.40 138.50 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 19 -6.04 1.00 107.30 101.26 A A A NE1 CE2 CD2 TRP TRP TRP 14 14 14 N 19 6.87 1.10 114.20 121.07 A A A CA CB SG CYS CYS CYS 33 33 33 N 20 -6.94 1.00 110.10 103.16 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 20 8.00 0.90 109.00 117.00 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 20 7.52 1.10 130.40 137.92 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 20 9.07 1.10 114.20 123.27 A A A CA CB SG CYS CYS CYS 33 33 33 N 20 -6.20 0.60 121.00 114.80 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 20 5.36 0.60 121.00 126.36 A A A CB CG CD1 TYR TYR TYR 36 36 36 N 21 -6.86 1.00 110.10 103.24 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 21 8.06 0.90 109.00 117.06 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 21 7.55 1.10 130.40 137.95 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 21 8.33 1.10 114.20 122.53 A A A CA CB SG CYS CYS CYS 33 33 33 N 21 -4.43 0.60 121.00 116.57 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 22 -7.01 1.00 110.10 103.09 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 22 8.13 0.90 109.00 117.13 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 22 7.47 1.10 130.40 137.87 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 22 9.12 1.10 114.20 123.32 A A A CA CB SG CYS CYS CYS 33 33 33 N 22 -5.51 0.60 121.00 115.49 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 22 4.76 0.60 121.00 125.76 A A A CB CG CD1 TYR TYR TYR 36 36 36 N 23 6.81 1.10 114.20 121.01 A A A CA CB SG CYS CYS CYS 13 13 13 N 23 -6.64 1.00 110.10 103.46 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 23 7.76 0.90 109.00 116.76 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 23 8.28 1.10 130.40 138.68 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 23 -6.23 1.00 107.30 101.07 A A A NE1 CE2 CD2 TRP TRP TRP 14 14 14 N 23 8.53 1.10 114.20 122.73 A A A CA CB SG CYS CYS CYS 33 33 33 N 23 6.79 1.10 114.20 120.99 A A A CA CB SG CYS CYS CYS 35 35 35 N 24 -6.90 1.00 110.10 103.20 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 24 8.09 0.90 109.00 117.09 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 24 7.53 1.10 130.40 137.93 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 24 9.21 1.10 114.20 123.41 A A A CA CB SG CYS CYS CYS 33 33 33 N 24 -5.31 0.60 121.00 115.69 A A A CB CG CD2 TYR TYR TYR 36 36 36 N 24 4.57 0.60 121.00 125.57 A A A CB CG CD1 TYR TYR TYR 36 36 36 N 25 -6.73 1.00 110.10 103.37 A A A CG CD1 NE1 TRP TRP TRP 14 14 14 N 25 7.86 0.90 109.00 116.86 A A A CD1 NE1 CE2 TRP TRP TRP 14 14 14 N 25 7.59 1.10 130.40 137.99 A A A NE1 CE2 CZ2 TRP TRP TRP 14 14 14 N 1 A ASN 30 31.20 46.13 2 A PRO 24 -62.16 2.39 2 A ASN 30 29.34 53.94 3 A ASN 30 27.84 50.35 4 A PRO 24 -69.60 14.16 4 A ASN 30 28.20 51.96 5 A ASP 4 -104.05 40.59 5 A PRO 24 -64.49 3.18 5 A ASN 30 27.99 54.21 6 A LYS 6 -39.76 102.41 6 A ASN 30 28.22 55.36 7 A ASP 4 -116.06 50.40 7 A LYS 11 -39.49 -29.18 7 A ASN 30 30.99 48.64 8 A ASN 30 28.48 55.63 9 A PRO 24 -69.94 0.65 9 A ASN 30 25.17 55.89 10 A LYS 11 -39.14 -31.96 10 A ASN 30 28.90 55.08 10 A TYR 36 -126.75 -165.53 11 A THR 8 -142.96 32.08 11 A ASN 30 31.79 51.77 12 A THR 8 -145.72 48.52 12 A ASN 30 29.67 55.74 13 A PHE 21 -122.51 -55.69 13 A ASN 30 29.46 50.70 14 A LYS 11 -39.69 -31.20 14 A PRO 24 -66.43 10.96 14 A ASN 30 30.87 55.36 15 A PRO 24 -65.13 1.35 15 A ASN 30 30.34 48.31 15 A TYR 36 -127.56 -165.00 16 A ASN 30 29.49 51.38 17 A THR 8 -148.02 48.64 17 A ASN 30 24.96 55.84 18 A LYS 6 -39.36 110.86 18 A ASN 30 30.82 53.36 19 A PRO 24 -62.55 0.24 19 A ASN 30 32.40 47.06 19 A TYR 36 -126.36 -166.25 20 A THR 8 -136.38 -38.35 20 A ASN 30 28.76 52.64 21 A THR 8 -123.18 -50.11 21 A PRO 24 -64.63 3.58 21 A ASN 30 28.73 52.44 22 A ASN 30 31.13 54.52 22 A TYR 36 -115.88 -168.99 23 A THR 8 -130.25 -43.19 23 A LYS 11 -39.86 -32.79 23 A PRO 24 -65.70 0.18 23 A ASN 30 31.69 44.34 23 A TYR 36 -128.16 -160.45 24 A PHE 21 -121.87 -57.02 24 A ASN 30 30.95 54.44 24 A TYR 36 -116.66 -169.00 25 A LYS 6 -39.65 113.13 25 A ASN 30 30.36 53.43 model building X-PLOR 3.84 refinement X-PLOR 3.84 phasing X-PLOR 3.84 TOXIN BMTX1 SCORPION TOXIN BMTX1 FROM BUTHUS MARTENSII KARSCH, NMR, 25 STRUCTURES 1 Y N A SER 10 A SER 10 HELX_P A MET 20 A MET 20 1 1 11 disulf 2.021 A CYS 7 A SG CYS 7 1_555 A CYS 28 A SG CYS 28 1_555 disulf 2.020 A CYS 13 A SG CYS 13 1_555 A CYS 33 A SG CYS 33 1_555 disulf 2.020 A CYS 17 A SG CYS 17 1_555 A CYS 35 A SG CYS 35 1_555 covale 1.306 both A PCA 1 A C PCA 1 1_555 A PHE 2 A N PHE 2 1_555 NEUROTOXIN TOXIN, SCORPION, NEUROTOXIN, LARGE CONDUCTANCE POTASSIUM CHANNEL, VOLTAGE GATED POTASSIUM CHANNEL, BUTHUS MARTENSII SCK1_MESMA UNP 1 22 Q9NII6 22 57 1BIG 2 37 Q9NII6 A 1 2 37 2 anti-parallel A LYS 27 A LYS 27 A MET 29 A MET 29 A LYS 32 A LYS 32 A ARG 34 A ARG 34 1 P 1