2NPJ - Sequence, Chains, Asymmetric and Biological Units

• Title: AN UNUSUAL TWIN-HIS ARRANGEMENT IN THE PORE OF AMMONIA CHANN ESSENTIAL FOR SUBSTRATE CONDUCTANCE
• Keywords: MEMBRANE PROTEIN, AMMONIA TRANSPORT, HISTIDINE MUTANT, AMTB, TRANSPORT PROTEIN
• Experiment: X-ray diffraction
• Number of Models: 1

Database	ID code	Status	Coordinate files
			Header	Asymmetric unit	Biological unit
PDB	2NPJ	released	available	available	Quaternary Structure Server

Asymmetric unit from PDB

Unit	Type	Name	Chain ID	Residues	Atoms	Hetatoms
1	Protein	AMMONIA CHANNEL	A	363	2641	0
2	Ligand	AMMONIA CHANNEL	A	3	0	14
3	Water			97	0	97
total				463	2641	111

Proteins

Unit 1

ALA 3 VAL 4 ALA 5 ASP 6 LYS 7 ALA 8 ASP 9 ASN 10 ALA 11 PHE 12 MET 13 MET 14 ILE 15 CYS 16 THR 17 ALA 18 LEU 19 VAL 20 LEU 21 PHE 22 MET 23 THR 24 ILE 25 PRO 26 GLY 27 ILE 28 ALA 29 LEU 30 PHE 31 TYR 32 GLY 33 GLY 34 LEU 35 ILE 36 ARG 37 GLY 38 LYS 39 ASN 40 VAL 41 LEU 42 SER 43 MET 44 LEU 45 THR 46 GLN 47 VAL 48 THR 49 VAL 50 THR 51 PHE 52 ALA 53 LEU 54 VAL 55 CYS 56 ILE 57 LEU 58 TRP 59 VAL 60 VAL 61 TYR 62 GLY 63 TYR 64 SER 65 LEU 66 ALA 67 PHE 68 GLY 69 GLU 70 GLY 71 ASN 72 ASN 73 PHE 74 PHE 75 GLY 76 ASN 77 ILE 78 ASN 79 TRP 80 LEU 81 MET 82 LEU 83 LYS 84 ASN 85 ILE 86 GLU 87 LEU 88 THR 89 ALA 90 VAL 91 MET 92 GLY 93 SER 94 ILE 95 TYR 96 GLN 97 TYR 98 ILE 99 HIS 100 VAL 101 ALA 102 PHE 103 GLN 104 GLY 105 SER 106 PHE 107 ALA 108 CYS 109 ILE 110 THR 111 VAL 112 GLY 113 LEU 114 ILE 115 VAL 116 GLY 117 ALA 118 LEU 119 ALA 120 GLU 121 ARG 122 ILE 123 ARG 124 PHE 125 SER 126 ALA 127 VAL 128 LEU 129 ILE 130 PHE 131 VAL 132 VAL 133 VAL 134 TRP 135 LEU 136 THR 137 LEU 138 SER 139 TYR 140 ILE 141 PRO 142 ILE 143 ALA 144 HIS 145 MET 146 VAL 147 TRP 148 GLY 149 GLY 150 GLY 151 LEU 152 LEU 153 ALA 154 SER 155 HIS 156 GLY 157 ALA 158 LEU 159 ASP 160 PHE 161 ALA 162 GLY 163 GLY 164 THR 165 VAL 166 VAL 167 HIS 168 ILE 169 ASN 170 ALA 171 ALA 172 ILE 173 ALA 174 GLY 175 LEU 176 VAL 177 GLY 178 ALA 179 TYR 180 LEU 181 PRO 195 HIS 196 ASN 197 LEU 198 PRO 199 MET 200 VAL 201 PHE 202 THR 203 GLY 204 THR 205 ALA 206 ILE 207 LEU 208 TYR 209 ILE 210 GLY 211 TRP 212 PHE 213 GLY 214 PHE 215 ASN 216 ALA 217 GLY 218 SER 219 ALA 220 GLY 221 THR 222 ALA 223 ASN 224 GLU 225 ILE 226 ALA 227 ALA 228 LEU 229 ALA 230 PHE 231 VAL 232 ASN 233 THR 234 VAL 235 VAL 236 ALA 237 THR 238 ALA 239 ALA 240 ALA 241 ILE 242 LEU 243 GLY 244 TRP 245 ILE 246 PHE 247 GLY 248 GLU 249 TRP 250 ALA 251 LEU 252 ARG 253 GLY 254 LYS 255 PRO 256 SER 257 LEU 258 LEU 259 GLY 260 ALA 261 CYS 262 SER 263 GLY 264 ALA 265 ILE 266 ALA 267 GLY 268 LEU 269 VAL 270 GLY 271 VAL 272 THR 273 PRO 274 ALA 275 CYS 276 GLY 277 TYR 278 ILE 279 GLY 280 VAL 281 GLY 282 GLY 283 ALA 284 LEU 285 ILE 286 ILE 287 GLY 288 VAL 289 VAL 290 ALA 291 GLY 292 LEU 293 ALA 294 GLY 295 LEU 296 TRP 297 GLY 298 VAL 299 THR 300 MET 301 LEU 302 PRO 311 CYS 312 ASP 313 VAL 314 PHE 315 GLY 316 VAL 317 PHE 318 GLY 319 VAL 320 CYS 321 GLY 322 ILE 323 VAL 324 GLY 325 CYS 326 ILE 327 MET 328 THR 329 GLY 330 ILE 331 PHE 332 ALA 333 ALA 334 SER 335 SER 336 LEU 337 GLY 338 GLY 339 VAL 340 GLY 341 PHE 342 ALA 343 GLU 344 GLY 345 VAL 346 THR 347 MET 348 GLY 349 HIS 350 GLN 351 LEU 352 LEU 353 VAL 354 GLN 355 LEU 356 GLU 357 SER 358 ILE 359 ALA 360 ILE 361 THR 362 ILE 363 VAL 364 TRP 365 SER 366 GLY 367 VAL 368 VAL 369 ALA 370 PHE 371 ILE 372 GLY 373 TYR 374 LYS 375 LEU 376 ALA 377 ASP 378 LEU 379 THR 380 VAL 381 GLY 382 LEU 383 ARG 384 VAL 385 PRO 386

Ligands

Unit 2

ACT 601 IMD 701 IMD 801