1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 Wang, Y. Lan, W. Ding, J. Cao, C. 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 C5 H9 N O4 147.129 y GLUTAMIC ACID 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 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 C5 H11 N O2 S 149.211 y METHIONINE 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 N 1 N N N 2 S C N 3 N C N 4 N O N 5 N C N 6 N O N 7 N H N 8 N H N 9 N H N 10 N H N 11 N H N 12 N H N 13 N H N 14 N N N 15 S C N 16 N C N 17 N O N 18 N C N 19 N C N 20 N C N 21 N N N 22 N C N 23 N N N 24 N N N 25 N O N 26 N H N 27 N H N 28 N H N 29 N H N 30 N H N 31 N H N 32 N H N 33 N H N 34 N H N 35 N H N 36 N H N 37 N H N 38 N H N 39 N H N 40 N H N 41 N N N 42 S C N 43 N C N 44 N O N 45 N C N 46 N C N 47 N O N 48 N N N 49 N O N 50 N H N 51 N H N 52 N H N 53 N H N 54 N H N 55 N H N 56 N H N 57 N H N 58 N N N 59 S C N 60 N C N 61 N O N 62 N C N 63 N C N 64 N O N 65 N O N 66 N O N 67 N H N 68 N H N 69 N H N 70 N H N 71 N H N 72 N H N 73 N H N 74 N N N 75 R C N 76 N C N 77 N O N 78 N C N 79 N S N 80 N O N 81 N H N 82 N H N 83 N H N 84 N H N 85 N H N 86 N H N 87 N H N 88 N N N 89 S C N 90 N C N 91 N O N 92 N C N 93 N C N 94 N C N 95 N O N 96 N N N 97 N O N 98 N H N 99 N H N 100 N H N 101 N H N 102 N H N 103 N H N 104 N H N 105 N H N 106 N H N 107 N H N 108 N N N 109 S C N 110 N C N 111 N O N 112 N C N 113 N C N 114 N C N 115 N O N 116 N O N 117 N O N 118 N H N 119 N H N 120 N H N 121 N H N 122 N H N 123 N H N 124 N H N 125 N H N 126 N H N 127 N N N 128 N C N 129 N C N 130 N O N 131 N O N 132 N H N 133 N H N 134 N H N 135 N H N 136 N H N 137 N N N 138 S C N 139 N C N 140 N O N 141 N C Y 142 N C Y 143 N N Y 144 N C Y 145 N C Y 146 N N N 147 N O N 148 N H N 149 N H N 150 N H N 151 N H N 152 N H N 153 N H N 154 N H N 155 N H N 156 N H N 157 N H N 158 N N N 159 S C N 160 N C N 161 N O N 162 S C N 163 N C N 164 N C N 165 N C N 166 N O N 167 N H N 168 N H N 169 N H N 170 N H N 171 N H N 172 N H N 173 N H N 174 N H N 175 N H N 176 N H N 177 N H N 178 N H N 179 N H N 180 N N N 181 S C N 182 N C N 183 N O N 184 N C N 185 N C N 186 N C N 187 N C N 188 N O N 189 N H N 190 N H N 191 N H N 192 N H N 193 N H N 194 N H N 195 N H N 196 N H N 197 N H N 198 N H N 199 N H N 200 N H N 201 N H N 202 N N N 203 S C N 204 N C N 205 N O N 206 N C N 207 N C N 208 N C N 209 N C N 210 N N N 211 N O N 212 N H N 213 N H N 214 N H N 215 N H N 216 N H N 217 N H N 218 N H N 219 N H N 220 N H N 221 N H N 222 N H N 223 N H N 224 N H N 225 N H N 226 N H N 227 N N N 228 S C N 229 N C N 230 N O N 231 N C N 232 N C N 233 N S N 234 N C N 235 N O N 236 N H N 237 N H N 238 N H N 239 N H N 240 N H N 241 N H N 242 N H N 243 N H N 244 N H N 245 N H N 246 N H N 247 N N N 248 S C N 249 N C N 250 N O N 251 N C Y 252 N C Y 253 N C Y 254 N C Y 255 N C Y 256 N C Y 257 N C N 258 N O N 259 N H N 260 N H N 261 N H N 262 N H N 263 N H N 264 N H N 265 N H N 266 N H N 267 N H N 268 N H N 269 N H N 270 N N N 271 S C N 272 N C N 273 N O N 274 N C N 275 N C N 276 N C N 277 N O N 278 N H N 279 N H N 280 N H N 281 N H N 282 N H N 283 N H N 284 N H N 285 N H N 286 N H N 287 N N N 288 S C N 289 N C N 290 N O N 291 N C N 292 N O N 293 N O N 294 N H N 295 N H N 296 N H N 297 N H N 298 N H N 299 N H N 300 N H N 301 N N N 302 S C N 303 N C N 304 N O N 305 R C N 306 N O N 307 N C N 308 N O N 309 N H N 310 N H N 311 N H N 312 N H N 313 N H N 314 N H N 315 N H N 316 N H N 317 N H N 318 N N N 319 S C N 320 N C N 321 N O N 322 N C Y 323 N C Y 324 N C Y 325 N C Y 326 N N Y 327 N C Y 328 N C Y 329 N C Y 330 N C Y 331 N C N 332 N O N 333 N H N 334 N H N 335 N H N 336 N H N 337 N H N 338 N H N 339 N H N 340 N H N 341 N H N 342 N H N 343 N H N 344 N H N 345 N N N 346 S C N 347 N C N 348 N O N 349 N C Y 350 N C Y 351 N C Y 352 N C Y 353 N C Y 354 N C Y 355 N C N 356 N O N 357 N O N 358 N H N 359 N H N 360 N H N 361 N H N 362 N H N 363 N H N 364 N H N 365 N H N 366 N H N 367 N H N 368 N H N 369 N N N 370 S C N 371 N C N 372 N O N 373 N C N 374 N C N 375 N C N 376 N O N 377 N H N 378 N H N 379 N H N 380 N H N 381 N H N 382 N H N 383 N H N 384 N H N 385 N H N 386 N H N 387 N H N 1 N sing N 2 N sing N 3 N sing N 4 N sing N 5 N sing N 6 N sing N 7 N doub N 8 N sing N 9 N sing N 10 N sing N 11 N sing N 12 N sing N 13 N sing N 14 N sing N 15 N sing N 16 N sing N 17 N sing N 18 N sing N 19 N doub N 20 N sing N 21 N sing N 22 N sing N 23 N sing N 24 N sing N 25 N sing N 26 N sing N 27 N sing N 28 N sing N 29 N sing N 30 N sing N 31 N sing N 32 N sing N 33 N doub N 34 N sing N 35 N sing N 36 N sing N 37 N sing N 38 N sing N 39 N sing N 40 N sing N 41 N sing N 42 N sing N 43 N sing N 44 N sing N 45 N doub N 46 N sing N 47 N sing N 48 N sing N 49 N sing N 50 N doub N 51 N sing N 52 N sing N 53 N sing N 54 N sing N 55 N sing N 56 N sing N 57 N sing N 58 N sing N 59 N sing N 60 N sing N 61 N doub N 62 N sing N 63 N sing N 64 N sing N 65 N sing N 66 N doub N 67 N sing N 68 N sing N 69 N sing N 70 N sing N 71 N sing N 72 N sing N 73 N sing N 74 N sing N 75 N sing N 76 N doub N 77 N sing N 78 N sing N 79 N sing N 80 N sing N 81 N sing N 82 N sing N 83 N sing N 84 N sing N 85 N sing N 86 N sing N 87 N sing N 88 N sing N 89 N doub N 90 N sing N 91 N sing N 92 N sing N 93 N sing N 94 N sing N 95 N sing N 96 N sing N 97 N doub N 98 N sing N 99 N sing N 100 N sing N 101 N sing N 102 N sing N 103 N sing N 104 N sing N 105 N sing N 106 N sing N 107 N sing N 108 N doub N 109 N sing N 110 N sing N 111 N sing N 112 N sing N 113 N sing N 114 N sing N 115 N sing N 116 N doub N 117 N sing N 118 N sing N 119 N sing N 120 N sing N 121 N sing N 122 N sing N 123 N sing N 124 N sing N 125 N sing N 126 N doub N 127 N sing N 128 N sing N 129 N sing N 130 N sing N 131 N sing N 132 N sing N 133 N sing N 134 N sing N 135 N doub N 136 N sing N 137 N sing N 138 N sing N 139 N sing Y 140 N sing Y 141 N doub Y 142 N doub N 143 N sing Y 144 N sing N 145 N sing Y 146 N sing N 147 N sing N 148 N sing N 149 N sing N 150 N sing N 151 N sing N 152 N sing N 153 N sing N 154 N sing N 155 N sing N 156 N doub N 157 N sing N 158 N sing N 159 N sing N 160 N sing N 161 N sing N 162 N sing N 163 N sing N 164 N sing N 165 N sing N 166 N sing N 167 N sing N 168 N sing N 169 N sing N 170 N sing N 171 N sing N 172 N sing N 173 N sing N 174 N sing N 175 N sing N 176 N sing N 177 N doub N 178 N sing N 179 N sing N 180 N sing N 181 N sing N 182 N sing N 183 N sing N 184 N sing N 185 N sing N 186 N sing N 187 N sing N 188 N sing N 189 N sing N 190 N sing N 191 N sing N 192 N sing N 193 N sing N 194 N sing N 195 N sing N 196 N sing N 197 N sing N 198 N doub N 199 N sing N 200 N sing N 201 N sing N 202 N sing N 203 N sing N 204 N sing N 205 N sing N 206 N sing N 207 N sing N 208 N sing N 209 N sing N 210 N sing N 211 N sing N 212 N sing N 213 N sing N 214 N sing N 215 N sing N 216 N sing N 217 N sing N 218 N sing N 219 N sing N 220 N sing N 221 N sing N 222 N doub N 223 N sing N 224 N sing N 225 N sing N 226 N sing N 227 N sing N 228 N sing N 229 N sing N 230 N sing N 231 N sing N 232 N sing N 233 N sing N 234 N sing N 235 N sing N 236 N sing N 237 N sing N 238 N sing N 239 N sing N 240 N sing N 241 N doub N 242 N sing N 243 N sing N 244 N sing N 245 N sing Y 246 N doub Y 247 N sing Y 248 N sing N 249 N sing Y 250 N doub N 251 N sing Y 252 N doub N 253 N sing Y 254 N sing N 255 N sing N 256 N sing N 257 N sing N 258 N sing N 259 N sing N 260 N sing N 261 N sing N 262 N sing N 263 N sing N 264 N doub N 265 N sing N 266 N sing N 267 N sing N 268 N sing N 269 N sing N 270 N sing N 271 N sing N 272 N sing N 273 N sing N 274 N sing N 275 N sing N 276 N sing N 277 N sing N 278 N sing N 279 N sing N 280 N sing N 281 N doub N 282 N sing N 283 N sing N 284 N sing N 285 N sing N 286 N sing N 287 N sing N 288 N sing N 289 N sing N 290 N sing N 291 N sing N 292 N sing N 293 N sing N 294 N doub N 295 N sing N 296 N sing N 297 N sing N 298 N sing N 299 N sing N 300 N sing N 301 N sing N 302 N sing N 303 N sing N 304 N sing N 305 N sing N 306 N sing N 307 N sing N 308 N sing N 309 N sing N 310 N doub N 311 N sing N 312 N sing N 313 N sing N 314 N sing Y 315 N doub Y 316 N sing Y 317 N sing N 318 N sing Y 319 N doub Y 320 N sing Y 321 N sing N 322 N sing Y 323 N sing Y 324 N doub N 325 N sing Y 326 N doub N 327 N sing Y 328 N sing N 329 N sing N 330 N sing N 331 N sing N 332 N sing N 333 N sing N 334 N sing N 335 N sing N 336 N sing N 337 N sing N 338 N doub N 339 N sing N 340 N sing N 341 N sing N 342 N sing Y 343 N doub Y 344 N sing Y 345 N sing N 346 N sing Y 347 N doub N 348 N sing Y 349 N doub N 350 N sing Y 351 N sing N 352 N sing N 353 N sing N 354 N sing N 355 N sing N 356 N sing N 357 N sing N 358 N sing N 359 N sing N 360 N sing N 361 N sing N 362 N doub N 363 N sing N 364 N sing N 365 N sing N 366 N sing N 367 N sing N 368 N sing N 369 N sing N 370 N sing N 371 N sing N 372 N sing N 373 N sing UK Sci Rep 2045-2322 8 4571 4571 10.1038/s41598-018-23016-y 29545539 Solution structure of extracellular loop of human beta 4 subunit of BK channel and its biological implication on ChTX sensitivity. 2018 0000-0002-2509-6761 0000-0001-7006-4737 10.2210/pdb5y7l/pdb pdb_00005y7l 10.13018/BMR36113 14114.560 Calcium-activated potassium channel subunit beta-4 UNP RESIDUES 45-166 1 man polymer BK channel subunit beta-4,Hbeta4,Calcium-activated potassium channel,subfamily M subunit beta-4,Charybdotoxin receptor subunit beta-4,K(VCA)beta-4,Maxi K channel subunit beta-4,Slo-beta-4 no no QDLQATEANCTVLSVQQIGEVFECTFTCGADCRGTSQYPCVQVYVNNSESNSRALLHSDEHQLLTNPKCSYIPPCKRENQ KNLESVMNWQQYWKDEIGSQPFTCYFNQHQRPDDVLLHRTHD QDLQATEANCTVLSVQQIGEVFECTFTCGADCRGTSQYPCVQVYVNNSESNSRALLHSDEHQLLTNPKCSYIPPCKRENQ KNLESVMNWQQYWKDEIGSQPFTCYFNQHQRPDDVLLHRTHD 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 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 Human sample 1 122 KCNMB4 9606 Homo sapiens 562 Escherichia coli Biological sequence database_2 pdbx_database_status chem_comp_atom chem_comp_bond database_2 pdbx_entry_details pdbx_modification_feature repository Initial release Database references Other Data collection Database references Structure summary 1 0 2018-08-01 1 1 2023-06-14 1 2 2024-11-13 _database_2.pdbx_DOI _database_2.pdbx_database_accession _pdbx_database_status.status_code_nmr_data _database_2.pdbx_DOI Solution structure of Hbeta4 extracellular loop of BK potassium channel N PDBJ Y PDBJ 2017-08-17 REL REL REL REL Y A CYS 54 Disulfide bridge SG A CYS 10 A CYS 148 SG A CYS 104 1_555 1_555 None A CYS 68 Disulfide bridge SG A CYS 24 A CYS 119 SG A CYS 75 1_555 1_555 None A CYS 72 Disulfide bridge SG A CYS 28 A CYS 76 SG A CYS 32 1_555 1_555 None A CYS 84 Disulfide bridge SG A CYS 40 A CYS 113 SG A CYS 69 1_555 1_555 None structures with the lowest energy 100 20 isotropic 1 3D HNCA isotropic 1 3D HNCACB isotropic 1 3D CBCA(CO)NH isotropic 1 3D HNCO isotropic 1 3D 1H-15N TOCSY isotropic 1 3D 1H-15N NOESY isotropic 1 2D 1H-13C HSQC aliphatic isotropic 1 2D 1H-13C HSQC aromatic isotropic 1 3D 1H-13C NOESY aliphatic isotropic 1 3D 1H-13C NOESY aromatic isotropic 1 3D HCCH-TOCSY 0.5 mM [U-13C; U-15N] 25 mM natural abundance 50 mM natural abundance 0.5 mM [U-13C; U-15N] 25 mM natural abundance 50 mM natural abundance 75 mM condition_1 6.8 pH 1 atm 293 K simulated annealing 1 lowest energy 0.5 mM [U-13C; U-15N] Hbeta4, 25 mM sodium phosphate, 50 mM sodium chloride, 90% H2O/10% D2O 13C/15N-labelled hbeta4-loop 90% H2O/10% D2O solution 0.5 mM [U-13C; U-15N] Hbeta4, 25 mM sodium phosphate, 50 mM sodium chloride, 100% D2O 13C/15N-labelled hbeta4-loop 100% D2O solution Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax processing NMRDraw Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax chemical shift assignment NMRPipe Brunger refinement X-PLOR a triple resonances cryoprobe and pulsed field gradients 600 Varian INOVA GLN 45 n 1 GLN 45 A ASP 46 n 2 ASP 46 A LEU 47 n 3 LEU 47 A GLN 48 n 4 GLN 48 A ALA 49 n 5 ALA 49 A THR 50 n 6 THR 50 A GLU 51 n 7 GLU 51 A ALA 52 n 8 ALA 52 A ASN 53 n 9 ASN 53 A CYS 54 n 10 CYS 54 A THR 55 n 11 THR 55 A VAL 56 n 12 VAL 56 A LEU 57 n 13 LEU 57 A SER 58 n 14 SER 58 A VAL 59 n 15 VAL 59 A GLN 60 n 16 GLN 60 A GLN 61 n 17 GLN 61 A ILE 62 n 18 ILE 62 A GLY 63 n 19 GLY 63 A GLU 64 n 20 GLU 64 A VAL 65 n 21 VAL 65 A PHE 66 n 22 PHE 66 A GLU 67 n 23 GLU 67 A CYS 68 n 24 CYS 68 A THR 69 n 25 THR 69 A PHE 70 n 26 PHE 70 A THR 71 n 27 THR 71 A CYS 72 n 28 CYS 72 A GLY 73 n 29 GLY 73 A ALA 74 n 30 ALA 74 A ASP 75 n 31 ASP 75 A CYS 76 n 32 CYS 76 A ARG 77 n 33 ARG 77 A GLY 78 n 34 GLY 78 A THR 79 n 35 THR 79 A SER 80 n 36 SER 80 A GLN 81 n 37 GLN 81 A TYR 82 n 38 TYR 82 A PRO 83 n 39 PRO 83 A CYS 84 n 40 CYS 84 A VAL 85 n 41 VAL 85 A GLN 86 n 42 GLN 86 A VAL 87 n 43 VAL 87 A TYR 88 n 44 TYR 88 A VAL 89 n 45 VAL 89 A ASN 90 n 46 ASN 90 A ASN 91 n 47 ASN 91 A SER 92 n 48 SER 92 A GLU 93 n 49 GLU 93 A SER 94 n 50 SER 94 A ASN 95 n 51 ASN 95 A SER 96 n 52 SER 96 A ARG 97 n 53 ARG 97 A ALA 98 n 54 ALA 98 A LEU 99 n 55 LEU 99 A LEU 100 n 56 LEU 100 A HIS 101 n 57 HIS 101 A SER 102 n 58 SER 102 A ASP 103 n 59 ASP 103 A GLU 104 n 60 GLU 104 A HIS 105 n 61 HIS 105 A GLN 106 n 62 GLN 106 A LEU 107 n 63 LEU 107 A LEU 108 n 64 LEU 108 A THR 109 n 65 THR 109 A ASN 110 n 66 ASN 110 A PRO 111 n 67 PRO 111 A LYS 112 n 68 LYS 112 A CYS 113 n 69 CYS 113 A SER 114 n 70 SER 114 A TYR 115 n 71 TYR 115 A ILE 116 n 72 ILE 116 A PRO 117 n 73 PRO 117 A PRO 118 n 74 PRO 118 A CYS 119 n 75 CYS 119 A LYS 120 n 76 LYS 120 A ARG 121 n 77 ARG 121 A GLU 122 n 78 GLU 122 A ASN 123 n 79 ASN 123 A GLN 124 n 80 GLN 124 A LYS 125 n 81 LYS 125 A ASN 126 n 82 ASN 126 A LEU 127 n 83 LEU 127 A GLU 128 n 84 GLU 128 A SER 129 n 85 SER 129 A VAL 130 n 86 VAL 130 A MET 131 n 87 MET 131 A ASN 132 n 88 ASN 132 A TRP 133 n 89 TRP 133 A GLN 134 n 90 GLN 134 A GLN 135 n 91 GLN 135 A TYR 136 n 92 TYR 136 A TRP 137 n 93 TRP 137 A LYS 138 n 94 LYS 138 A ASP 139 n 95 ASP 139 A GLU 140 n 96 GLU 140 A ILE 141 n 97 ILE 141 A GLY 142 n 98 GLY 142 A SER 143 n 99 SER 143 A GLN 144 n 100 GLN 144 A PRO 145 n 101 PRO 145 A PHE 146 n 102 PHE 146 A THR 147 n 103 THR 147 A CYS 148 n 104 CYS 148 A TYR 149 n 105 TYR 149 A PHE 150 n 106 PHE 150 A ASN 151 n 107 ASN 151 A GLN 152 n 108 GLN 152 A HIS 153 n 109 HIS 153 A GLN 154 n 110 GLN 154 A ARG 155 n 111 ARG 155 A PRO 156 n 112 PRO 156 A ASP 157 n 113 ASP 157 A ASP 158 n 114 ASP 158 A VAL 159 n 115 VAL 159 A LEU 160 n 116 LEU 160 A LEU 161 n 117 LEU 161 A HIS 162 n 118 HIS 162 A ARG 163 n 119 ARG 163 A THR 164 n 120 THR 164 A HIS 165 n 121 HIS 165 A ASP 166 n 122 ASP 166 A author_defined_assembly 1 monomeric none 0 0 8670 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 N THR 55 A N THR 11 A O ASN 90 A O ASN 46 A N ASN 91 A N ASN 47 A O SER 96 A O SER 52 A N CYS 68 A N CYS 24 A O SER 80 A O SER 36 A N TYR 149 A N TYR 105 A O LEU 160 A O LEU 116 2 A A HD21 H ASN CYS 53 148 1.34 3 A A HE21 HE2 GLN HIS 48 153 1.33 3 A A O H TRP ILE 137 141 1.60 3 A A O O ALA CYS 52 148 2.18 4 A A HE21 H GLN ALA 48 49 1.22 4 A A HD21 H ASN CYS 53 148 1.34 4 A A O O ALA CYS 52 148 2.19 5 A A O O ALA CYS 52 148 2.19 6 A A HD21 H ASN CYS 53 148 1.30 6 A A O O ALA CYS 52 148 2.19 8 A A HE21 H GLN ALA 48 49 1.16 8 A A O O ALA CYS 52 148 2.18 9 A A O O ALA CYS 52 148 2.18 10 A A HE21 HE2 GLN HIS 48 153 1.24 10 A A O O ALA CYS 52 148 2.19 11 A A O H TRP ILE 137 141 1.53 11 A A O O ALA CYS 52 148 2.19 12 A A HE22 HH21 GLN ARG 144 163 1.33 13 A A HE2 HE21 HIS GLN 153 154 1.25 13 A A O O ALA CYS 52 148 2.17 14 A A O H ASN TYR 132 136 1.60 14 A A O O ALA CYS 52 148 2.18 15 A A H HE22 LEU GLN 99 124 1.33 15 A A HD21 H ASN CYS 53 148 1.34 15 A A O H TRP ILE 137 141 1.59 17 A A H2 HH12 GLN ARG 45 77 1.29 17 A A O O ALA CYS 52 148 2.19 18 A A HD21 HH11 ASN ARG 91 121 1.22 18 A A O H TRP ILE 137 141 1.58 18 A A O O ALA CYS 52 148 2.18 19 A A HD21 H ASN CYS 53 148 1.28 19 A A HG1 HD21 THR ASN 71 95 1.35 19 A A O O ALA CYS 52 148 2.19 20 A A O O ALA CYS 52 148 2.19 1 A THR 50 -172.06 -77.61 1 A LEU 57 -44.66 157.12 1 A GLN 61 -78.34 -79.07 1 A PRO 83 -57.12 -158.50 1 A GLN 86 -55.70 -160.91 1 A TYR 88 -177.61 -130.27 1 A SER 92 -90.72 38.99 1 A SER 94 -170.13 -54.58 1 A ASN 95 -175.86 43.92 1 A PRO 117 -38.89 100.57 1 A LEU 127 -102.87 -103.64 1 A GLU 140 -102.97 -74.53 1 A SER 143 161.15 62.63 1 A ARG 155 -167.72 -53.04 1 A PRO 156 -103.00 -97.38 1 A ASP 157 -162.77 78.54 2 A ASP 46 -103.22 -110.85 2 A THR 50 -173.75 -72.89 2 A LEU 57 -47.53 155.62 2 A ILE 62 -45.22 174.68 2 A ALA 74 101.91 38.56 2 A PRO 83 -48.10 -149.81 2 A GLN 86 -55.48 -158.95 2 A TYR 88 -177.13 -128.88 2 A SER 94 -150.22 31.11 2 A SER 114 156.98 -50.02 2 A PRO 117 -32.42 95.26 2 A SER 143 174.08 73.14 2 A ARG 155 -168.52 -52.28 2 A PRO 156 -97.80 -94.19 2 A ASP 157 -175.96 82.15 3 A THR 50 -172.27 -71.84 3 A ILE 62 -43.45 170.90 3 A PRO 83 -50.34 -149.93 3 A GLN 86 -56.03 -158.21 3 A TYR 88 -178.11 -143.05 3 A SER 94 -166.91 39.53 3 A PRO 117 -38.77 100.22 3 A GLN 124 59.24 100.57 3 A SER 143 33.72 68.11 3 A ARG 155 -168.38 -51.50 3 A PRO 156 -100.89 -96.02 3 A ASP 157 -165.75 73.06 4 A THR 50 -172.67 -68.87 4 A LEU 57 -35.43 151.13 4 A ILE 62 52.42 170.02 4 A PRO 83 -50.48 -149.49 4 A GLN 86 -56.79 -159.85 4 A TYR 88 -178.57 -130.90 4 A SER 92 -89.14 31.04 4 A SER 94 -166.84 -43.34 4 A ASN 95 168.33 46.19 4 A CYS 113 -106.10 -69.89 4 A PRO 117 -31.16 92.77 4 A GLU 122 88.54 36.72 4 A SER 143 41.09 71.90 4 A ARG 155 -168.74 -52.72 4 A PRO 156 -98.13 -97.52 4 A ASP 157 -166.94 78.08 5 A THR 50 -176.93 -59.80 5 A ILE 62 49.17 173.26 5 A PRO 83 -74.25 -149.98 5 A GLN 86 -58.13 -155.40 5 A TYR 88 -177.88 -130.39 5 A SER 94 -158.95 -46.19 5 A ASN 95 165.31 45.45 5 A CYS 113 -137.23 -89.79 5 A PRO 117 -34.68 97.00 5 A GLU 140 -102.97 -73.94 5 A SER 143 159.01 65.43 5 A ARG 155 -168.86 -53.11 5 A PRO 156 -107.21 -102.74 5 A ASP 157 -162.22 74.30 6 A THR 50 -174.30 -66.43 6 A ILE 62 49.22 171.62 6 A ALA 74 102.61 39.35 6 A PRO 83 -54.04 -151.20 6 A GLN 86 -54.59 -159.58 6 A TYR 88 -177.36 -129.56 6 A SER 94 -158.60 33.35 6 A PRO 117 -37.59 99.66 6 A GLU 140 -102.46 -72.15 6 A SER 143 -91.68 53.95 6 A ARG 155 -168.15 -53.35 6 A PRO 156 -104.49 -96.31 6 A ASP 157 -179.49 78.70 7 A ASP 46 -90.73 -73.44 7 A GLN 48 3.82 -89.94 7 A THR 50 -176.39 -71.42 7 A LEU 57 -44.40 150.32 7 A ILE 62 179.48 -178.90 7 A PRO 83 -63.70 -155.20 7 A GLN 86 -54.87 -162.15 7 A TYR 88 -177.74 -130.90 7 A SER 94 152.40 -13.82 7 A ASN 95 -89.85 -106.50 7 A CYS 113 -107.64 66.56 7 A SER 114 165.89 -33.90 7 A PRO 117 -31.01 93.86 7 A GLU 122 84.03 35.68 7 A GLU 140 -104.03 -73.63 7 A SER 143 174.58 51.84 7 A ARG 155 -168.67 -52.77 7 A PRO 156 -97.46 -97.69 7 A ASP 157 -171.54 79.44 8 A GLN 48 -120.17 -112.03 8 A LEU 57 -48.87 155.39 8 A ILE 62 -43.63 169.61 8 A PRO 83 -46.65 -160.89 8 A GLN 86 -54.48 -160.75 8 A TYR 88 -177.15 -129.43 8 A CYS 113 -105.91 77.14 8 A SER 114 161.13 -41.96 8 A PRO 117 -32.99 93.49 8 A GLU 140 -105.43 -75.46 8 A SER 143 71.66 74.10 8 A GLN 154 -71.47 -70.59 8 A ARG 155 -167.57 -52.66 8 A PRO 156 -100.93 -96.32 8 A ASP 157 -160.23 72.75 9 A LEU 57 -47.62 152.33 9 A ILE 62 -48.75 -177.60 9 A ALA 74 70.70 37.24 9 A PRO 83 -53.53 -158.57 9 A GLN 86 -56.67 -157.45 9 A TYR 88 -177.42 -129.67 9 A CYS 113 -100.16 59.72 9 A SER 114 164.20 -29.01 9 A PRO 117 -31.69 94.98 9 A GLN 124 45.57 -169.24 9 A LEU 127 -91.66 -96.14 9 A SER 143 -175.72 76.13 9 A ARG 155 -167.64 -52.70 9 A PRO 156 -97.67 -99.25 9 A ASP 157 -167.66 79.94 10 A THR 50 -172.50 -77.55 10 A LEU 57 -48.67 155.20 10 A ILE 62 49.86 172.21 10 A ALA 74 72.10 36.94 10 A PRO 83 -48.96 -159.91 10 A GLN 86 -56.26 -161.15 10 A TYR 88 -178.64 -130.95 10 A SER 92 -89.80 40.13 10 A SER 94 -162.55 -38.82 10 A ASN 95 162.24 39.98 10 A CYS 113 -95.78 -80.48 10 A PRO 117 -31.20 93.31 10 A SER 143 156.42 68.44 10 A ARG 155 -167.78 -51.21 10 A PRO 156 -98.43 -93.96 10 A ASP 157 -174.34 83.02 11 A LEU 57 -37.20 146.47 11 A ILE 62 -43.92 172.67 11 A ALA 74 101.96 39.63 11 A PRO 83 -47.79 -148.95 11 A GLN 86 -56.11 -155.08 11 A TYR 88 -177.42 -131.49 11 A SER 94 -150.57 30.67 11 A SER 114 -146.50 43.91 11 A PRO 117 -33.56 97.11 11 A LYS 125 -53.52 -168.08 11 A ILE 141 -146.98 -71.30 11 A SER 143 172.51 60.78 11 A ARG 155 -168.50 -52.55 11 A PRO 156 -99.39 -97.74 11 A ASP 157 -168.90 79.97 12 A ASP 46 -93.51 -77.66 12 A GLN 48 -53.13 -104.14 12 A THR 50 -173.50 -70.56 12 A ILE 62 -43.96 171.79 12 A PRO 83 -50.14 -148.07 12 A GLN 86 -48.66 -179.30 12 A TYR 88 -177.39 -130.02 12 A SER 94 -147.59 -63.55 12 A ASN 95 166.44 48.20 12 A SER 114 -140.16 42.45 12 A PRO 117 -38.13 99.97 12 A GLN 124 -176.13 148.47 12 A LYS 125 -85.55 -76.98 12 A SER 143 159.19 74.84 12 A GLN 144 -164.34 99.69 12 A PRO 145 -54.86 171.31 12 A ARG 155 -168.65 -52.62 12 A PRO 156 -99.84 -96.42 12 A ASP 157 -169.69 77.67 13 A LEU 57 -44.33 152.91 13 A ILE 62 -44.07 172.25 13 A ALA 74 101.56 39.96 13 A PRO 83 -49.55 -150.50 13 A GLN 86 -53.68 -161.07 13 A TYR 88 -179.19 -142.89 13 A SER 92 -84.61 31.92 13 A SER 94 -173.45 -40.60 13 A ASN 95 165.33 41.88 13 A SER 114 154.62 -51.18 13 A PRO 117 -33.06 93.50 13 A GLU 140 -103.55 -75.11 13 A ILE 141 -98.07 -73.56 13 A SER 143 165.65 60.94 13 A ARG 155 -168.47 -52.74 13 A PRO 156 -101.00 -97.64 13 A ASP 157 -168.36 78.51 14 A LEU 57 -47.73 156.83 14 A ILE 62 51.48 171.19 14 A ALA 74 102.93 39.85 14 A PRO 83 -52.74 -149.43 14 A GLN 86 -53.71 -164.82 14 A TYR 88 -177.72 -130.58 14 A SER 94 155.90 -16.06 14 A ASN 95 -91.24 -105.13 14 A CYS 113 179.11 -76.51 14 A PRO 117 -27.59 90.74 14 A GLU 122 90.45 35.82 14 A GLU 140 -103.56 -75.19 14 A ILE 141 -100.19 -71.13 14 A SER 143 164.48 71.22 14 A ARG 155 -169.11 -53.40 14 A PRO 156 -103.38 -96.87 14 A ASP 157 -174.19 75.94 15 A THR 50 -176.02 -64.44 15 A LEU 57 -43.45 150.01 15 A ILE 62 -49.80 -174.90 15 A PRO 83 -51.67 -155.83 15 A GLN 86 -56.94 -158.81 15 A TYR 88 -177.94 -130.61 15 A SER 94 -155.51 32.31 15 A PRO 117 -39.12 100.62 15 A LYS 125 -58.32 -169.81 15 A SER 143 37.36 70.24 15 A ARG 155 -168.90 -52.07 15 A PRO 156 -104.29 -97.95 15 A ASP 157 -174.04 74.75 16 A THR 50 -177.21 -60.54 16 A ILE 62 -46.63 178.56 16 A ALA 74 101.94 39.97 16 A PRO 83 -67.71 -151.53 16 A GLN 86 -69.79 -158.26 16 A TYR 88 -178.02 -130.49 16 A SER 92 -86.23 31.92 16 A SER 94 -165.83 -45.07 16 A ASN 95 166.77 39.59 16 A PRO 117 -36.87 99.16 16 A ILE 141 -92.51 -77.49 16 A SER 143 86.27 81.47 16 A GLN 144 -161.65 68.53 16 A ARG 155 -167.85 -52.89 16 A PRO 156 -101.54 -100.35 16 A ASP 157 -175.02 77.72 17 A ASP 46 -74.76 -73.12 17 A THR 50 -175.81 -59.79 17 A GLN 61 -69.33 -161.69 17 A ALA 74 102.47 37.57 17 A PRO 83 -45.96 -149.70 17 A GLN 86 -52.43 -168.40 17 A TYR 88 -177.37 -130.00 17 A SER 92 -89.05 33.31 17 A SER 94 -167.14 -44.54 17 A ASN 95 169.74 43.59 17 A PRO 117 -33.98 95.31 17 A GLU 140 -142.47 -46.49 17 A SER 143 80.01 70.16 17 A ARG 155 -168.96 -53.32 17 A PRO 156 -104.19 -97.89 17 A ASP 157 -172.34 72.94 18 A THR 50 -173.83 -63.75 18 A LEU 57 -49.84 154.75 18 A ILE 62 51.29 171.27 18 A ALA 74 70.29 35.54 18 A PRO 83 -50.80 -148.92 18 A GLN 86 -54.82 -167.54 18 A TYR 88 -177.78 -130.59 18 A SER 94 -160.97 34.49 18 A CYS 113 -69.01 31.30 18 A PRO 117 -107.31 61.80 18 A ILE 141 -134.83 -65.03 18 A SER 143 165.03 75.43 18 A GLN 144 -153.55 88.52 18 A ARG 155 -168.10 -51.34 18 A PRO 156 -99.83 -93.97 18 A ASP 157 -176.39 80.43 19 A THR 50 -174.58 -68.75 19 A ILE 62 -44.20 171.26 19 A ALA 74 102.44 40.20 19 A PRO 83 -49.30 -151.19 19 A GLN 86 -51.93 -170.53 19 A TYR 88 -177.58 -129.11 19 A SER 94 -159.81 33.11 19 A SER 114 -144.37 44.18 19 A PRO 117 -34.37 97.26 19 A GLN 124 55.31 -174.53 19 A LEU 127 -103.77 -114.15 19 A GLU 140 -133.05 -64.20 19 A ILE 141 -40.47 -92.27 19 A SER 143 83.56 83.08 19 A GLN 144 -166.43 73.61 19 A GLN 154 -68.80 -70.25 19 A ARG 155 -158.33 -52.42 19 A PRO 156 -105.69 -95.49 19 A ASP 157 179.84 80.60 20 A ASP 46 -91.57 -78.51 20 A THR 50 -173.52 -71.66 20 A GLN 61 -56.30 -112.18 20 A PRO 83 -47.02 -148.09 20 A GLN 86 -52.55 -170.29 20 A TYR 88 -177.75 -130.06 20 A SER 94 -157.93 -46.63 20 A ASN 95 161.77 42.15 20 A ASP 103 175.31 164.71 20 A PRO 117 -32.14 93.11 20 A LYS 125 -142.38 -124.31 20 A SER 143 156.48 66.11 20 A ARG 155 -168.59 -52.65 20 A PRO 156 -100.09 -96.33 20 A ASP 157 -165.18 76.51 N Solution structure of Hbeta4 extracellular loop of BK potassium channel 1 N N A ASP 103 A ASP 59 HELX_P A ASN 110 A ASN 66 1 AA1 8 A LEU 127 A LEU 83 HELX_P A ILE 141 A ILE 97 1 AA2 15 disulf 2.026 A CYS 54 A SG CYS 10 1_555 A CYS 148 A SG CYS 104 1_555 disulf 2.021 A CYS 68 A SG CYS 24 1_555 A CYS 119 A SG CYS 75 1_555 disulf 2.020 A CYS 72 A SG CYS 28 1_555 A CYS 76 A SG CYS 32 1_555 disulf 2.020 A CYS 84 A SG CYS 40 1_555 A CYS 113 A SG CYS 69 1_555 METAL BINDING PROTEIN Beta4, BK, METAL BINDING PROTEIN KCMB4_HUMAN UNP 1 45 Q86W47 QDLQATEANCTVLSVQQIGEVFECTFTCGADCRGTSQYPCVQVYVNNSESNSRALLHSDEHQLLTNPKCSYIPPCKRENQ KNLESVMNWQQYWKDEIGSQPFTCYFNQHQRPDDVLLHRTHD 45 166 5Y7L 45 166 Q86W47 A 1 1 122 3 2 2 anti-parallel anti-parallel anti-parallel anti-parallel A ASN 53 A ASN 9 A VAL 56 A VAL 12 A VAL 89 A VAL 45 A SER 92 A SER 48 A SER 96 A SER 52 A ALA 98 A ALA 54 A PHE 66 A PHE 22 A CYS 72 A CYS 28 A CYS 76 A CYS 32 A TYR 82 A TYR 38 A PHE 146 A PHE 102 A ASN 151 A ASN 107 A ASP 158 A ASP 114 A ARG 163 A ARG 119