HEADSC 3byv COMMNT S2C correlation file created: Fri Feb 1 19:24:44 EST 2008 COMMNT COMMNT If you use this database, please cite: COMMNT COMMNT Guoli Wang, Jonathan W. Arthur, and Roland L. Dunbrack, Jr. COMMNT "S2C: A database correlating sequence and atomic COMMNT coordinate numbering in the Protein Data Bank" COMMNT dunbrack.fccc.edu/Guoli/s2c COMMNT Copyright (c) February 2000, April 2002. COMMNT COMMNT SEQCRD columns are as follows: COMMNT COMMNT Column Positions Item COMMNT 1 0-6 Record identifier COMMNT 2 8 Chain COMMNT 3 10 One letter residue code COMMNT 4 12-14 SEQRES three letter residue code COMMNT 5 16-18 ATOM three letter residue code COMMNT 6 20-24 SEQRES residue number COMMNT 7 26-31 ATOM residue number COMMNT 8 33 PDB secondary structure COMMNT 9 35 STRIDE secondary structure COMMNT 10 37-43 Error flags COMMNT COMMNT Secondary structrue annotation: COMMNT H: Helix E: Strand T: Turn COMMNT B: Bridge G: 310Helix C: Coil COMMNT SEQCRD A M MET --- 1 - - - 367 SEQCRD A H HIS --- 2 - - - 367 SEQCRD A H HIS --- 3 - - - 367 SEQCRD A H HIS --- 4 - - - 367 SEQCRD A H HIS --- 5 - - - 367 SEQCRD A H HIS --- 6 - - - 367 SEQCRD A H HIS --- 7 - - - 367 SEQCRD A S SER --- 8 - - - 367 SEQCRD A S SER --- 9 - - - 367 SEQCRD A G GLY --- 10 - - - 367 SEQCRD A R ARG --- 11 - - - 367 SEQCRD A E GLU --- 12 - - - 367 SEQCRD A N ASN --- 13 - - - 367 SEQCRD A L LEU --- 14 - - - 367 SEQCRD A Y TYR --- 15 - - - 367 SEQCRD A F PHE --- 16 - - - 367 SEQCRD A Q GLN GLN 17 208 C C 4 SEQCRD A G GLY GLY 18 209 C T 45 SEQCRD A P PRO PRO 19 210 C T 45 SEQCRD A G GLY GLY 20 211 H T 45 SEQCRD A D ASP ASP 21 212 H H 4 SEQCRD A V VAL VAL 22 213 H H 4 SEQCRD A V VAL VAL 23 214 H H 4 SEQCRD A I ILE ILE 24 215 H H 4 SEQCRD A E GLU GLU 25 216 H H 4 SEQCRD A E GLU GLU 26 217 H H 4 SEQCRD A L LEU LEU 27 218 H H 4 SEQCRD A F PHE PHE 28 219 H H 4 SEQCRD A N ASN ASN 29 220 H H 4 SEQCRD A R ARG ARG 30 221 H H 4 SEQCRD A I ILE ILE 31 222 H C 45 SEQCRD A P PRO PRO 32 223 H G 45 SEQCRD A Q GLN GLN 33 224 H G 45 SEQCRD A A ALA ALA 34 225 H G 45 SEQCRD A N ASN ASN 35 226 H C 45 SEQCRD A V VAL VAL 36 227 C C 4 SEQCRD A R ARG ARG 37 228 C C 4 SEQCRD A T THR THR 38 229 C T 45 SEQCRD A T THR THR 39 230 C T 45 SEQCRD A S SER SER 40 231 C T 45 SEQCRD A E GLU GLU 41 232 C T 45 SEQCRD A Y TYR --- 42 - - - 367 SEQCRD A M MET MET 43 234 H H 4 SEQCRD A Q GLN GLN 44 235 H H 4 SEQCRD A S SER SER 45 236 H H 4 SEQCRD A A ALA ALA 46 237 H H 4 SEQCRD A A ALA ALA 47 238 H H 4 SEQCRD A D ASP ASP 48 239 H H 4 SEQCRD A S SER SER 49 240 H H 4 SEQCRD A L LEU LEU 50 241 H H 4 SEQCRD A V VAL VAL 51 242 H H 4 SEQCRD A S SER SER 52 243 H H 4 SEQCRD A T THR THR 53 244 H H 4 SEQCRD A S SER SER 54 245 H H 4 SEQCRD A L LEU LEU 55 246 H H 4 SEQCRD A W TRP TRP 56 247 C T 45 SEQCRD A N ASN ASN 57 248 C T 45 SEQCRD A T THR --- 58 - - - 367 SEQCRD A G GLY GLY 59 250 C T 45 SEQCRD A Q GLN GLN 60 251 C T 45 SEQCRD A P PRO PRO 61 252 E E 4 SEQCRD A F PHE PHE 62 253 E E 4 SEQCRD A R ARG ARG 63 254 E E 4 SEQCRD A V VAL VAL 64 255 E E 4 SEQCRD A E GLU GLU 65 256 E E 4 SEQCRD A S SER SER 66 257 E E 4 SEQCRD A E GLU GLU 67 258 C T 45 SEQCRD A L LEU LEU 68 259 C T 45 SEQCRD A G GLY GLY 69 260 C T 45 SEQCRD A E GLU GLU 70 261 C C 4 SEQCRD A R ARG ARG 71 262 C C 4 SEQCRD A P PRO PRO 72 263 C C 4 SEQCRD A R ARG ARG 73 264 E E 4 SEQCRD A T THR THR 74 265 E E 4 SEQCRD A L LEU LEU 75 266 E E 4 SEQCRD A V VAL VAL 76 267 E E 4 SEQCRD A R ARG ARG 77 268 E E 4 SEQCRD A G GLY GLY 78 269 E E 4 SEQCRD A T THR THR 79 270 E E 4 SEQCRD A V VAL VAL 80 271 E E 4 SEQCRD A L LEU LEU 81 272 E E 4 SEQCRD A G GLY GLY 82 273 E E 4 SEQCRD A Q GLN GLN 83 274 E E 4 SEQCRD A E GLU GLU 84 275 E E 4 SEQCRD A D ASP ASP 85 276 C T 45 SEQCRD A P PRO PRO 86 277 C T 45 SEQCRD A Y TYR TYR 87 278 E E 4 SEQCRD A A ALA ALA 88 279 E E 4 SEQCRD A Y TYR TYR 89 280 E E 4 SEQCRD A L LEU LEU 90 281 E E 4 SEQCRD A E GLU GLU 91 282 E E 4 SEQCRD A A ALA ALA 92 283 E E 4 SEQCRD A T THR THR 93 284 E E 4 SEQCRD A D ASP ASP 94 285 C T 45 SEQCRD A Q GLN --- 95 - - - 367 SEQCRD A E GLU GLU 96 287 C T 45 SEQCRD A T THR THR 97 288 C T 45 SEQCRD A G GLY GLY 98 289 C T 45 SEQCRD A E GLU GLU 99 290 C C 4 SEQCRD A S SER SER 100 291 E E 4 SEQCRD A F PHE PHE 101 292 E E 4 SEQCRD A E GLU GLU 102 293 E E 4 SEQCRD A V VAL VAL 103 294 E E 4 SEQCRD A H HIS HIS 104 295 E E 4 SEQCRD A V VAL VAL 105 296 E E 4 SEQCRD A P PRO PRO 106 297 E E 4 SEQCRD A Y TYR TYR 107 298 E E 4 SEQCRD A F PHE PHE 108 299 E E 4 SEQCRD A T THR THR 109 300 C T 45 SEQCRD A E GLU GLU 110 301 C T 45 SEQCRD A R ARG --- 111 - - - 367 SEQCRD A P PRO PRO 112 303 C T 45 SEQCRD A P PRO PRO 113 304 C C 4 SEQCRD A S SER SER 114 305 C C 4 SEQCRD A N ASN ASN 115 306 H H 4 SEQCRD A A ALA ALA 116 307 H H 4 SEQCRD A I ILE ILE 117 308 H H 4 SEQCRD A K LYS LYS 118 309 H H 4 SEQCRD A Q GLN GLN 119 310 H H 4 SEQCRD A M MET MET 120 311 H H 4 SEQCRD A K LYS LYS 121 312 H H 4 SEQCRD A E GLU GLU 122 313 H H 4 SEQCRD A E GLU GLU 123 314 H H 4 SEQCRD A V VAL VAL 124 315 H H 4 SEQCRD A L LEU LEU 125 316 H H 4 SEQCRD A R ARG ARG 126 317 H G 45 SEQCRD A L LEU LEU 127 318 H G 45 SEQCRD A R ARG ARG 128 319 H G 45 SEQCRD A L LEU LEU 129 320 H G 45 SEQCRD A L LEU LEU 130 321 H T 45 SEQCRD A R ARG ARG 131 322 C T 45 SEQCRD A G GLY GLY 132 323 C T 45 SEQCRD A I ILE ILE 133 324 C T 45 SEQCRD A K LYS LYS 134 325 C C 4 SEQCRD A N ASN ASN 135 326 H C 45 SEQCRD A Q GLN GLN 136 327 H H 4 SEQCRD A K LYS LYS 137 328 H H 4 SEQCRD A Q GLN GLN 138 329 H H 4 SEQCRD A A ALA ALA 139 330 H H 4 SEQCRD A K LYS LYS 140 331 H H 4 SEQCRD A V VAL VAL 141 332 H H 4 SEQCRD A H HIS HIS 142 333 H H 4 SEQCRD A L LEU LEU 143 334 H H 4 SEQCRD A R ARG ARG 144 335 H C 45 SEQCRD A F PHE PHE 145 336 C B 45 SEQCRD A I ILE ILE 146 337 C C 4 SEQCRD A F PHE PHE 147 338 C C 4 SEQCRD A P PRO PRO 148 339 C C 4 SEQCRD A F PHE PHE 149 340 C C 4 SEQCRD A D ASP ASP 150 341 E E 4 SEQCRD A L LEU LEU 151 342 E E 4 SEQCRD A V VAL VAL 152 343 E E 4 SEQCRD A K LYS LYS 153 344 E E 4 SEQCRD A D ASP ASP 154 345 C T 45 SEQCRD A P PRO PRO 155 346 C T 45 SEQCRD A Q GLN GLN 156 347 C T 45 SEQCRD A K LYS LYS 157 348 C T 45 SEQCRD A K LYS LYS 158 349 C T 45 SEQCRD A K LYS LYS 159 350 C T 45 SEQCRD A M MET MET 160 351 E E 4 SEQCRD A I ILE ILE 161 352 E E 4 SEQCRD A R ARG ARG 162 353 C T 45 SEQCRD A V VAL VAL 163 354 C T 45 SEQCRD A R ARG --- 164 - - - 367 SEQCRD A L LEU --- 165 - - - 367 SEQCRD A D ASP --- 166 - - - 367 SEQCRD A E GLU --- 167 - - - 367 SEQCRD A R ARG --- 168 - - - 367 SEQCRD A D ASP --- 169 - - - 367 SEQCRD A M MET MET 170 361 C T 45 SEQCRD A W TRP TRP 171 362 E E 4 SEQCRD A V VAL VAL 172 363 E E 4 SEQCRD A L LEU LEU 173 364 E E 4 SEQCRD A S SER SER 174 365 C C 4 SEQCRD A R ARG ARG 175 366 E E 4 SEQCRD A F PHE PHE 176 367 E E 4 SEQCRD A F PHE PHE 177 368 E E 4 SEQCRD A L LEU LEU 178 369 E E 4 SEQCRD A Y TYR TYR 179 370 E E 4 SEQCRD A P PRO PRO 180 371 E E 4 SEQCRD A R ARG ARG 181 372 C C 4 SEQCRD A M MET MET 182 373 C C 4 SEQCRD A Q GLN GLN 183 374 C C 4 SEQCRD A S SER SER 184 375 E E 4 SEQCRD A N ASN ASN 185 376 E E 4 SEQCRD A L LEU LEU 186 377 H H 4 SEQCRD A Q GLN GLN 187 378 H H 4 SEQCRD A T THR THR 188 379 H H 4 SEQCRD A F PHE PHE 189 380 H H 4 SEQCRD A G GLY GLY 190 381 H H 4 SEQCRD A E GLU GLU 191 382 H H 4 SEQCRD A V VAL VAL 192 383 H H 4 SEQCRD A L LEU LEU 193 384 H H 4 SEQCRD A L LEU LEU 194 385 H H 4 SEQCRD A S SER SER 195 386 H H 4 SEQCRD A H HIS HIS 196 387 H H 4 SEQCRD A S SER SER 197 388 C T 45 SEQCRD A S SER SER 198 389 C T 45 SEQCRD A T THR THR 199 390 C T 45 SEQCRD A H HIS HIS 200 391 H T 45 SEQCRD A K LYS LYS 201 392 H H 4 SEQCRD A S SER SER 202 393 H H 4 SEQCRD A L LEU LEU 203 394 H H 4 SEQCRD A V VAL VAL 204 395 H H 4 SEQCRD A H HIS HIS 205 396 H H 4 SEQCRD A H HIS HIS 206 397 H H 4 SEQCRD A A ALA ALA 207 398 H H 4 SEQCRD A R ARG ARG 208 399 H H 4 SEQCRD A L LEU LEU 209 400 H H 4 SEQCRD A Q GLN GLN 210 401 H H 4 SEQCRD A L LEU LEU 211 402 H H 4 SEQCRD A T THR THR 212 403 H H 4 SEQCRD A L LEU LEU 213 404 H H 4 SEQCRD A Q GLN GLN 214 405 H H 4 SEQCRD A V VAL VAL 215 406 H H 4 SEQCRD A I ILE ILE 216 407 H H 4 SEQCRD A R ARG ARG 217 408 H H 4 SEQCRD A L LEU LEU 218 409 H H 4 SEQCRD A L LEU LEU 219 410 H H 4 SEQCRD A A ALA ALA 220 411 H H 4 SEQCRD A S SER SER 221 412 H H 4 SEQCRD A L LEU LEU 222 413 H H 4 SEQCRD A H HIS HIS 223 414 H H 4 SEQCRD A H HIS HIS 224 415 H H 4 SEQCRD A Y TYR TYR 225 416 H H 4 SEQCRD A G GLY GLY 226 417 C C 4 SEQCRD A L LEU LEU 227 418 E E 4 SEQCRD A V VAL VAL 228 419 E E 4 SEQCRD A H HIS HIS 229 420 C T 45 SEQCRD A T THR THR 230 421 C T 45 SEQCRD A Y TYR TYR 231 422 C T 45 SEQCRD A L LEU LEU 232 423 C T 45 SEQCRD A R ARG ARG 233 424 H C 45 SEQCRD A P PRO PRO 234 425 H G 45 SEQCRD A V VAL VAL 235 426 H G 45 SEQCRD A D ASP ASP 236 427 C G 45 SEQCRD A I ILE ILE 237 428 E E 4 SEQCRD A V VAL VAL 238 429 E E 4 SEQCRD A L LEU LEU 239 430 E E 4 SEQCRD A D ASP ASP 240 431 C T 45 SEQCRD A Q GLN GLN 241 432 C T 45 SEQCRD A R ARG ARG 242 433 C T 45 SEQCRD A G GLY GLY 243 434 C T 45 SEQCRD A G GLY GLY 244 435 C C 4 SEQCRD A V VAL VAL 245 436 E E 4 SEQCRD A F PHE PHE 246 437 E E 4 SEQCRD A L LEU LEU 247 438 E E 4 SEQCRD A T THR THR 248 439 C C 4 SEQCRD A G GLY GLY 249 440 H C 45 SEQCRD A F PHE PHE 250 441 H T 45 SEQCRD A E GLU GLU 251 442 H T 45 SEQCRD A H HIS HIS 252 443 H T 45 SEQCRD A L LEU LEU 253 444 H T 45 SEQCRD A V VAL VAL 254 445 E E 4 SEQCRD A R ARG ARG 255 446 E E 4 SEQCRD A D ASP ASP 256 447 C T 45 SEQCRD A G GLY GLY 257 448 C T 45 SEQCRD A A ALA ALA 258 449 C E 45 SEQCRD A R ARG ARG 259 450 E E 4 SEQCRD A V VAL VAL 260 451 E E 4 SEQCRD A V VAL VAL 261 452 E E 4 SEQCRD A S SER SER 262 453 C C 4 SEQCRD A S SER SER 263 454 C C 4 SEQCRD A V VAL VAL 264 455 C C 4 SEQCRD A S SER SER 265 456 C T 45 SEQCRD A R ARG ARG 266 457 C T 45 SEQCRD A G GLY GLY 267 458 C T 45 SEQCRD A F PHE PHE 268 459 C T 45 SEQCRD A E GLU GLU 269 460 C C 4 SEQCRD A P PRO PRO 270 461 H C 45 SEQCRD A P PRO PRO 271 462 H H 4 SEQCRD A E GLU GLU 272 463 H H 4 SEQCRD A L LEU LEU 273 464 H H 4 SEQCRD A E GLU GLU 274 465 H H 4 SEQCRD A A ALA ALA 275 466 H H 4 SEQCRD A R ARG ARG 276 467 H H 4 SEQCRD A R ARG ARG 277 468 H H 4 SEQCRD A A ALA ALA 278 469 H H 4 SEQCRD A T THR THR 279 470 C C 4 SEQCRD A I ILE ILE 280 471 H H 4 SEQCRD A S SER SER 281 472 H H 4 SEQCRD A Y TYR TYR 282 473 H H 4 SEQCRD A H HIS HIS 283 474 H H 4 SEQCRD A R ARG ARG 284 475 H H 4 SEQCRD A D ASP ASP 285 476 H C 45 SEQCRD A R ARG ARG 286 477 C C 4 SEQCRD A R ARG ARG 287 478 E E 4 SEQCRD A T THR THR 288 479 E E 4 SEQCRD A L LEU LEU 289 480 E E 4 SEQCRD A M MET MET 290 481 C E 45 SEQCRD A T THR THR 291 482 H C 45 SEQCRD A F PHE PHE 292 483 H H 4 SEQCRD A S SER SER 293 484 H H 4 SEQCRD A F PHE PHE 294 485 H H 4 SEQCRD A D ASP ASP 295 486 H H 4 SEQCRD A A ALA ALA 296 487 H H 4 SEQCRD A W TRP TRP 297 488 H H 4 SEQCRD A A ALA ALA 298 489 H H 4 SEQCRD A L LEU LEU 299 490 H H 4 SEQCRD A G GLY GLY 300 491 H H 4 SEQCRD A L LEU LEU 301 492 H H 4 SEQCRD A V VAL VAL 302 493 H H 4 SEQCRD A I ILE ILE 303 494 H H 4 SEQCRD A Y TYR TYR 304 495 H H 4 SEQCRD A W TRP TRP 305 496 H H 4 SEQCRD A I ILE ILE 306 497 H H 4 SEQCRD A W TRP TRP 307 498 H H 4 SEQCRD A C CYS CYS 308 499 H C 45 SEQCRD A A ALA ALA 309 500 H C 45 SEQCRD A D ASP ASP 310 501 C C 4 SEQCRD A L LEU LEU 311 502 C C 4 SEQCRD A P PRO PRO 312 503 C C 4 SEQCRD A I ILE ILE 313 504 C C 4 SEQCRD A T THR --- 314 - - - 367 SEQCRD A K LYS --- 315 - - - 367 SEQCRD A D ASP --- 316 - - - 367 SEQCRD A A ALA --- 317 - - - 367 SEQCRD A A ALA --- 318 - - - 367 SEQCRD A L LEU --- 319 - - - 367 SEQCRD A G GLY GLY 320 511 C C 4 SEQCRD A G GLY GLY 321 512 C C 4 SEQCRD A S SER SER 322 513 H C 45 SEQCRD A E GLU GLU 323 514 H G 45 SEQCRD A W TRP TRP 324 515 H G 45 SEQCRD A I ILE ILE 325 516 H G 45 SEQCRD A F PHE PHE 326 517 H T 45 SEQCRD A R ARG ARG 327 518 H T 45 SEQCRD A S SER SER 328 519 C T 45 SEQCRD A C CYS CYS 329 520 C T 45 SEQCRD A K LYS LYS 330 521 C C 4 SEQCRD A N ASN ASN 331 522 C C 4 SEQCRD A I ILE ILE 332 523 C C 4 SEQCRD A P PRO PRO 333 524 H C 45 SEQCRD A Q GLN GLN 334 525 H H 4 SEQCRD A P PRO PRO 335 526 H H 4 SEQCRD A V VAL VAL 336 527 H H 4 SEQCRD A R ARG ARG 337 528 H H 4 SEQCRD A A ALA ALA 338 529 H H 4 SEQCRD A L LEU LEU 339 530 H H 4 SEQCRD A L LEU LEU 340 531 H H 4 SEQCRD A E GLU GLU 341 532 H H 4 SEQCRD A G GLY GLY 342 533 H H 4 SEQCRD A F PHE PHE 343 534 H H 4 SEQCRD A L LEU LEU 344 535 H H 4 SEQCRD A R ARG ARG 345 536 C T 45 SEQCRD A Y TYR TYR 346 537 C T 45 SEQCRD A P PRO PRO 347 538 H T 45 SEQCRD A K LYS LYS 348 539 H G 45 SEQCRD A E GLU GLU 349 540 H G 45 SEQCRD A D ASP ASP 350 541 H G 45 SEQCRD A R ARG ARG 351 542 H C 45 SEQCRD A L LEU LEU 352 543 C C 4 SEQCRD A L LEU LEU 353 544 H C 45 SEQCRD A P PRO PRO 354 545 H H 4 SEQCRD A L LEU LEU 355 546 H H 4 SEQCRD A Q GLN GLN 356 547 H H 4 SEQCRD A A ALA ALA 357 548 H H 4 SEQCRD A M MET MET 358 549 H H 4 SEQCRD A E GLU GLU 359 550 H H 4 SEQCRD A T THR THR 360 551 H C 45 SEQCRD A P PRO PRO 361 552 H H 4 SEQCRD A E GLU GLU 362 553 H H 4 SEQCRD A Y TYR TYR 363 554 H H 4 SEQCRD A E GLU GLU 364 555 H H 4 SEQCRD A Q GLN GLN 365 556 H H 4 SEQCRD A L LEU LEU 366 557 H H 4 SEQCRD A R ARG ARG 367 558 H H 4 SEQCRD A T THR THR 368 559 H H 4 SEQCRD A E GLU GLU 369 560 H H 4 SEQCRD A L LEU LEU 370 561 H H 4 SEQCRD A S SER SER 371 562 H H 4 SEQCRD A A ALA ALA 372 563 H H 4 SEQCRD A A ALA ALA 373 564 H H 4 SEQCRD A L LEU LEU 374 565 H G 45 SEQCRD A P PRO PRO 375 566 H G 45 SEQCRD A L LEU LEU 376 567 H G 45 SEQCRD A Y TYR TYR 377 568 H C 45 COMMNT S2CERR 1 0 No standard amino acid code S2CERR 2 0 SEQRES and ATOM residue names differ S2CERR 3 32 No ATOM record S2CERR 4 345 SEQRES and ATOM residue numbers differ S2CERR 5 104 PDB and STRIDE secondary structures differ S2CERR 6 32 PDB secondary structure is absent S2CERR 7 32 STRIDE secondary structure is absent COMMNT COMMNT Crystallographic technical parameters: PARAME method 'X-RAY DIFFRACTION' PARAME resolution 1.80 PARAME R-factor 0.20334 PARAME B-factor 13.045 COMMNT COMMNT Reference database information: DATABA source: DATABA PDB: 3BYV (3BYV) COMMNT DATABA mutation: DATABA HIS A 6 --> ? ? 'EXPRESSION TAG' DATABA ARG A 11 --> ? ? 'EXPRESSION TAG' DATABA GLY A 18 --> ? ? 'EXPRESSION TAG' DATABA LEU A 14 --> ? ? 'EXPRESSION TAG' DATABA PHE A 16 --> ? ? 'EXPRESSION TAG' DATABA HIS A 4 --> ? ? 'EXPRESSION TAG' DATABA HIS A 5 --> ? ? 'EXPRESSION TAG' DATABA SER A 9 --> ? ? 'EXPRESSION TAG' DATABA ASN A 13 --> ? ? 'EXPRESSION TAG' DATABA GLU A 12 --> ? ? 'EXPRESSION TAG' DATABA HIS A 7 --> ? ? 'EXPRESSION TAG' DATABA HIS A 2 --> ? ? 'EXPRESSION TAG' DATABA MET A 1 --> ? ? 'EXPRESSION TAG' DATABA GLN A 17 --> ? ? 'EXPRESSION TAG' DATABA GLY A 10 --> ? ? 'EXPRESSION TAG' DATABA SER A 8 --> ? ? 'EXPRESSION TAG' DATABA TYR A 15 --> ? ? 'EXPRESSION TAG' DATABA HIS A 3 --> ? ? 'EXPRESSION TAG'