0.027701 0.010633 0.001805 0.000000 0.027678 0.002550 0.000000 0.000000 0.013065 0.00000 0.00000 0.00000 RESIDUES PRO A 66 AND PRO B 66 ARE CIS PROLINES. IN EACH CHAIN, THE PEPTIDE BOND LINKING GLY 116 TO GLY 117 IS IN THE CIS CONFORMATION. Davies /II, J.F. Kraut, J. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 2 94.30 91.70 111.00 36.100 38.700 76.900 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 C19 H19 N7 O6 441.397 FOLIC ACID non-polymer 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 H2 O 18.015 WATER non-polymer 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 Y 88 N N Y 89 N C N 90 N N Y 91 N N Y 92 N C N 93 N O Y 94 N C Y 95 N N Y 96 N C Y 97 N C Y 98 N N Y 99 N C N 100 N C N 101 N N Y 102 N C Y 103 N C Y 104 N C Y 105 N C Y 106 N C Y 107 N C N 108 N C N 109 N O N 110 N N N 111 S C N 112 N C N 113 N C N 114 N C N 115 N O N 116 N O N 117 N C N 118 N O N 119 N O 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 H N 128 N H N 129 N H N 130 N H N 131 N H N 132 N H N 133 N H N 134 N H N 135 N H N 136 N H N 137 N H N 138 N H N 139 N N N 140 S C N 141 N C N 142 N O N 143 N C N 144 N C N 145 N C N 146 N O N 147 N N N 148 N O 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 H N 159 N N N 160 S C N 161 N C N 162 N O N 163 N C N 164 N C N 165 N C N 166 N O N 167 N O N 168 N O 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 N N 179 N C N 180 N C N 181 N O N 182 N O N 183 N H N 184 N H N 185 N H N 186 N H N 187 N H N 188 N N N 189 S C N 190 N C N 191 N O N 192 N C Y 193 N C Y 194 N N Y 195 N C Y 196 N C Y 197 N N N 198 N O N 199 N H N 200 N H N 201 N H N 202 N H N 203 N H N 204 N H N 205 N H N 206 N H N 207 N H N 208 N H N 209 N O N 210 N H N 211 N H N 212 N N N 213 S C N 214 N C N 215 N O N 216 S C N 217 N C N 218 N C N 219 N C N 220 N O 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 H N 228 N H N 229 N H N 230 N H N 231 N H N 232 N H N 233 N H N 234 N N N 235 S C N 236 N C N 237 N O N 238 N C N 239 N C N 240 N C N 241 N C N 242 N O N 243 N H N 244 N H N 245 N H N 246 N H N 247 N H N 248 N H N 249 N H N 250 N H N 251 N H N 252 N H N 253 N H N 254 N H N 255 N H N 256 N N N 257 S C N 258 N C N 259 N O N 260 N C N 261 N C N 262 N C N 263 N C N 264 N N N 265 N O N 266 N H N 267 N H N 268 N H N 269 N H N 270 N H N 271 N H N 272 N H N 273 N H N 274 N H N 275 N H N 276 N H N 277 N H N 278 N H N 279 N H N 280 N H N 281 N N N 282 S C N 283 N C N 284 N O N 285 N C N 286 N C N 287 N S N 288 N C N 289 N O N 290 N H N 291 N H N 292 N H N 293 N H 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 N C Y 306 N C Y 307 N C Y 308 N C Y 309 N C Y 310 N C Y 311 N C N 312 N O N 313 N H N 314 N H N 315 N H N 316 N H N 317 N H N 318 N H N 319 N H N 320 N H N 321 N H N 322 N H N 323 N H N 324 N N N 325 S C N 326 N C N 327 N O N 328 N C N 329 N C N 330 N C N 331 N O N 332 N H 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 N N 342 S C N 343 N C N 344 N O N 345 N C N 346 N O N 347 N O N 348 N H N 349 N H N 350 N H N 351 N H N 352 N H N 353 N H N 354 N H N 355 N N N 356 S C N 357 N C N 358 N O N 359 R C N 360 N O N 361 N C N 362 N O 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 H N 370 N H N 371 N H N 372 N N N 373 S C N 374 N C N 375 N O N 376 N C Y 377 N C Y 378 N C Y 379 N C Y 380 N N Y 381 N C Y 382 N C Y 383 N C Y 384 N C Y 385 N C N 386 N O N 387 N H N 388 N H N 389 N H N 390 N H N 391 N H N 392 N H N 393 N H N 394 N H N 395 N H N 396 N H N 397 N H N 398 N H N 399 N N N 400 S C N 401 N C N 402 N O N 403 N C Y 404 N C Y 405 N C Y 406 N C Y 407 N C Y 408 N C Y 409 N C N 410 N O N 411 N O N 412 N H N 413 N H N 414 N H N 415 N H N 416 N H N 417 N H N 418 N H N 419 N H N 420 N H N 421 N H N 422 N H N 423 N N N 424 S C N 425 N C N 426 N O N 427 N C N 428 N C N 429 N C N 430 N O N 431 N H N 432 N H N 433 N H N 434 N H N 435 N H N 436 N H N 437 N H N 438 N H N 439 N H N 440 N H N 441 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 Y 83 N sing Y 84 N sing N 85 N sing N 86 N sing Y 87 N doub N 88 N sing N 89 N sing Y 90 N sing N 91 N doub Y 92 N sing Y 93 N sing Y 94 N doub Y 95 N doub Y 96 N sing N 97 N sing Y 98 N doub N 99 N sing Y 100 N sing N 101 N sing N 102 N sing N 103 N sing N 104 N sing N 105 N sing Y 106 N doub Y 107 N sing N 108 N sing Y 109 N sing N 110 N sing Y 111 N doub N 112 N sing Y 113 N sing Y 114 N doub N 115 N sing N 116 N sing N 117 N doub 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 sing N 127 N sing N 128 N sing N 129 N sing N 130 N doub N 131 N sing N 132 N sing N 133 N doub N 134 N sing N 135 N sing N 136 N sing N 137 N sing N 138 N sing N 139 N sing N 140 N sing N 141 N sing N 142 N doub N 143 N sing N 144 N sing N 145 N sing N 146 N sing N 147 N sing N 148 N sing N 149 N sing N 150 N doub N 151 N sing N 152 N sing N 153 N sing N 154 N sing N 155 N sing N 156 N sing N 157 N sing N 158 N sing N 159 N sing N 160 N sing N 161 N doub 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 doub 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 sing N 178 N sing N 179 N doub 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 doub N 189 N sing N 190 N sing N 191 N sing N 192 N sing Y 193 N sing Y 194 N doub Y 195 N doub N 196 N sing Y 197 N sing N 198 N sing Y 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 doub 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 sing 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 doub 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 sing N 242 N sing N 243 N sing N 244 N sing N 245 N sing N 246 N sing N 247 N sing N 248 N sing N 249 N sing N 250 N sing N 251 N sing N 252 N sing N 253 N doub N 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 sing 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 doub N 278 N sing N 279 N sing N 280 N sing N 281 N sing 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 sing N 295 N sing N 296 N doub N 297 N sing N 298 N sing N 299 N sing N 300 N sing Y 301 N doub Y 302 N sing Y 303 N sing N 304 N sing Y 305 N doub N 306 N sing Y 307 N doub N 308 N sing Y 309 N sing N 310 N sing N 311 N sing N 312 N sing N 313 N sing N 314 N sing N 315 N sing N 316 N sing N 317 N sing N 318 N sing N 319 N doub N 320 N sing N 321 N sing N 322 N sing N 323 N sing N 324 N sing N 325 N sing N 326 N sing N 327 N sing N 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 doub N 337 N sing N 338 N sing N 339 N sing N 340 N sing N 341 N sing N 342 N sing N 343 N sing N 344 N sing N 345 N sing N 346 N sing N 347 N sing N 348 N sing N 349 N doub N 350 N sing N 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 sing N 363 N sing N 364 N sing N 365 N doub N 366 N sing N 367 N sing N 368 N sing N 369 N sing Y 370 N doub Y 371 N sing Y 372 N sing N 373 N sing Y 374 N doub Y 375 N sing Y 376 N sing N 377 N sing Y 378 N sing Y 379 N doub N 380 N sing Y 381 N doub N 382 N sing Y 383 N sing N 384 N sing N 385 N sing N 386 N sing N 387 N sing N 388 N sing N 389 N sing N 390 N sing N 391 N sing N 392 N sing N 393 N doub N 394 N sing N 395 N sing N 396 N sing N 397 N sing Y 398 N doub Y 399 N sing Y 400 N sing N 401 N sing Y 402 N doub N 403 N sing Y 404 N doub N 405 N sing Y 406 N sing N 407 N sing N 408 N sing N 409 N sing N 410 N sing N 411 N sing N 412 N sing N 413 N sing N 414 N sing N 415 N sing N 416 N sing N 417 N doub N 418 N sing N 419 N sing N 420 N sing N 421 N sing N 422 N sing N 423 N sing N 424 N sing N 425 N sing N 426 N sing N 427 N sing N 428 N sing US Biochemistry BICHAW 0033 0006-2960 29 9467 9479 10.1021/bi00492a021 2248959 Crystal structures of recombinant human dihydrofolate reductase complexed with folate and 5-deazafolate. 1990 US Biochemistry BICHAW 0033 0006-2960 27 3664 Expression and Site-Directed Mutagenesis of Human Dihydrofolate Reductase 1988 10.2210/pdb1dhf/pdb pdb_00001dhf 0.027701 0.010633 0.001805 0.000000 0.027678 0.002550 0.000000 0.000000 0.013065 0.00000 0.00000 0.00000 1 x-ray 1 1.0 21349.525 DIHYDROFOLATE REDUCTASE 1.5.1.3 2 man polymer 441.397 FOLIC ACID 2 syn non-polymer 18.015 water 116 nat water no no VGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSRELK EPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLLP EYPGVLSDVQEEKGIKYKFEVYEKND VGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSRELK EPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLLP EYPGVLSDVQEEKGIKYKFEVYEKND A,B 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 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 Homo sample 9606 Homo sapiens 2.34 47.36 pdbx_database_status struct_conf struct_conf_type struct_keywords chem_comp_atom chem_comp_bond database_2 struct_site repository Initial release Version format compliance Version format compliance Derived calculations Other Structure summary Data collection Database references Derived calculations 1 0 1990-07-15 1 1 2008-03-24 1 2 2011-07-13 1 3 2017-11-29 1 4 2024-02-07 _pdbx_database_status.process_site _struct_keywords.text _database_2.pdbx_DOI _database_2.pdbx_database_accession _struct_site.pdbx_auth_asym_id _struct_site.pdbx_auth_comp_id _struct_site.pdbx_auth_seq_id HELIX IN EACH CHAIN, RESIDUES ASP 21 - LEU 22 - PRO 23 - TRP 24 - PRO 25 - PRO 26 ARE IN LEFT-HANDED POLYPROLINE HELIX CONFORMATION. SHEET THE FOLLOWING REMARKS APPLY TO EACH CHAIN. IN THE *HELIX*, *SHEET* AND *TURN* RECORDS BELOW, AN *A* OR *B* HAS BEEN APPENDED TO THE NAMES USED IN THIS REMARK TO DISTINGUISH CHAINS. RESIDUE GLN 102 PARTICIPATES IN BOTH HELIX E AND EP. RESIDUES LYS 108 AND VAL 109 PARTICIPATE IN BOTH HELIX EP AND STRAND E. RESIDUE GLU 172 IS IN TIGHT-TURN 8 AND BETA STRAND G. RESIDUE ILE 175 IS IN TIGHT-TURN 8 AND BETA STRAND H. RESIDUES ASP 110 - MET 111 FORM A BETA-BULGE IN STRAND E. RESIDUES VAL 115 - GLY 116 FORM A BETA-BULGE IN STRAND E. TIGHT TURN 7 DISRUPTS STRAND G. THIS IS REPRESENTED ON THE SHEET RECORDS BELOW BY PRESENTING THE SHEET TWICE WITH STRAND 8 DIFFERENT. Y BNL 1989-10-25 REL FOL FOLIC ACID HOH water FOL 187 2 FOL FOL 187 A FOL 187 2 FOL FOL 187 B HOH 403 3 HOH HOH 403 A HOH 404 3 HOH HOH 404 A HOH 406 3 HOH HOH 406 A HOH 407 3 HOH HOH 407 A HOH 411 3 HOH HOH 411 A HOH 412 3 HOH HOH 412 A HOH 416 3 HOH HOH 416 A HOH 417 3 HOH HOH 417 A HOH 419 3 HOH HOH 419 A HOH 420 3 HOH HOH 420 A HOH 422 3 HOH HOH 422 A HOH 424 3 HOH HOH 424 A HOH 428 3 HOH HOH 428 A HOH 430 3 HOH HOH 430 A HOH 431 3 HOH HOH 431 A HOH 433 3 HOH HOH 433 A HOH 435 3 HOH HOH 435 A HOH 436 3 HOH HOH 436 A HOH 438 3 HOH HOH 438 A HOH 443 3 HOH HOH 443 A HOH 450 3 HOH HOH 450 A HOH 453 3 HOH HOH 453 A HOH 455 3 HOH HOH 455 A HOH 456 3 HOH HOH 456 A HOH 457 3 HOH HOH 457 A HOH 459 3 HOH HOH 459 A HOH 460 3 HOH HOH 460 A HOH 464 3 HOH HOH 464 A HOH 466 3 HOH HOH 466 A HOH 467 3 HOH HOH 467 A HOH 469 3 HOH HOH 469 A HOH 470 3 HOH HOH 470 A HOH 471 3 HOH HOH 471 A HOH 472 3 HOH HOH 472 A HOH 475 3 HOH HOH 475 A HOH 476 3 HOH HOH 476 A HOH 477 3 HOH HOH 477 A HOH 478 3 HOH HOH 478 A HOH 479 3 HOH HOH 479 A HOH 480 3 HOH HOH 480 A HOH 482 3 HOH HOH 482 A HOH 483 3 HOH HOH 483 A HOH 485 3 HOH HOH 485 A HOH 487 3 HOH HOH 487 A HOH 490 3 HOH HOH 490 A HOH 491 3 HOH HOH 491 A HOH 492 3 HOH HOH 492 A HOH 493 3 HOH HOH 493 A HOH 495 3 HOH HOH 495 A HOH 496 3 HOH HOH 496 A HOH 500 3 HOH HOH 500 A HOH 501 3 HOH HOH 501 A HOH 506 3 HOH HOH 506 A HOH 507 3 HOH HOH 507 A HOH 508 3 HOH HOH 508 A HOH 509 3 HOH HOH 509 A HOH 510 3 HOH HOH 510 A HOH 511 3 HOH HOH 511 A HOH 513 3 HOH HOH 513 A HOH 514 3 HOH HOH 514 A HOH 515 3 HOH HOH 515 A HOH 516 3 HOH HOH 516 A HOH 401 3 HOH HOH 401 B HOH 402 3 HOH HOH 402 B HOH 405 3 HOH HOH 405 B HOH 408 3 HOH HOH 408 B HOH 409 3 HOH HOH 409 B HOH 410 3 HOH HOH 410 B HOH 413 3 HOH HOH 413 B HOH 414 3 HOH HOH 414 B HOH 415 3 HOH HOH 415 B HOH 418 3 HOH HOH 418 B HOH 421 3 HOH HOH 421 B HOH 423 3 HOH HOH 423 B HOH 425 3 HOH HOH 425 B HOH 426 3 HOH HOH 426 B HOH 427 3 HOH HOH 427 B HOH 429 3 HOH HOH 429 B HOH 432 3 HOH HOH 432 B HOH 434 3 HOH HOH 434 B HOH 437 3 HOH HOH 437 B HOH 439 3 HOH HOH 439 B HOH 440 3 HOH HOH 440 B HOH 441 3 HOH HOH 441 B HOH 442 3 HOH HOH 442 B HOH 444 3 HOH HOH 444 B HOH 445 3 HOH HOH 445 B HOH 446 3 HOH HOH 446 B HOH 447 3 HOH HOH 447 B HOH 448 3 HOH HOH 448 B HOH 449 3 HOH HOH 449 B HOH 451 3 HOH HOH 451 B HOH 452 3 HOH HOH 452 B HOH 454 3 HOH HOH 454 B HOH 458 3 HOH HOH 458 B HOH 461 3 HOH HOH 461 B HOH 462 3 HOH HOH 462 B HOH 463 3 HOH HOH 463 B HOH 465 3 HOH HOH 465 B HOH 468 3 HOH HOH 468 B HOH 473 3 HOH HOH 473 B HOH 474 3 HOH HOH 474 B HOH 481 3 HOH HOH 481 B HOH 484 3 HOH HOH 484 B HOH 486 3 HOH HOH 486 B HOH 488 3 HOH HOH 488 B HOH 489 3 HOH HOH 489 B HOH 494 3 HOH HOH 494 B HOH 497 3 HOH HOH 497 B HOH 498 3 HOH HOH 498 B HOH 499 3 HOH HOH 499 B HOH 502 3 HOH HOH 502 B HOH 503 3 HOH HOH 503 B HOH 504 3 HOH HOH 504 B HOH 505 3 HOH HOH 505 B HOH 512 3 HOH HOH 512 B n 1 1 A n 2 2 A n 3 3 A LEU 4 n 4 LEU 4 A ASN 5 n 5 ASN 5 A CYS 6 n 6 CYS 6 A ILE 7 n 7 ILE 7 A VAL 8 n 8 VAL 8 A ALA 9 n 9 ALA 9 A VAL 10 n 10 VAL 10 A SER 11 n 11 SER 11 A GLN 12 n 12 GLN 12 A ASN 13 n 13 ASN 13 A MET 14 n 14 MET 14 A GLY 15 n 15 GLY 15 A ILE 16 n 16 ILE 16 A GLY 17 n 17 GLY 17 A LYS 18 n 18 LYS 18 A ASN 19 n 19 ASN 19 A GLY 20 n 20 GLY 20 A ASP 21 n 21 ASP 21 A LEU 22 n 22 LEU 22 A PRO 23 n 23 PRO 23 A TRP 24 n 24 TRP 24 A PRO 25 n 25 PRO 25 A PRO 26 n 26 PRO 26 A LEU 27 n 27 LEU 27 A ARG 28 n 28 ARG 28 A ASN 29 n 29 ASN 29 A GLU 30 n 30 GLU 30 A PHE 31 n 31 PHE 31 A ARG 32 n 32 ARG 32 A TYR 33 n 33 TYR 33 A PHE 34 n 34 PHE 34 A GLN 35 n 35 GLN 35 A ARG 36 n 36 ARG 36 A MET 37 n 37 MET 37 A THR 38 n 38 THR 38 A THR 39 n 39 THR 39 A THR 40 n 40 THR 40 A SER 41 n 41 SER 41 A SER 42 n 42 SER 42 A VAL 43 n 43 VAL 43 A GLU 44 n 44 GLU 44 A GLY 45 n 45 GLY 45 A LYS 46 n 46 LYS 46 A GLN 47 n 47 GLN 47 A ASN 48 n 48 ASN 48 A LEU 49 n 49 LEU 49 A VAL 50 n 50 VAL 50 A ILE 51 n 51 ILE 51 A MET 52 n 52 MET 52 A GLY 53 n 53 GLY 53 A LYS 54 n 54 LYS 54 A LYS 55 n 55 LYS 55 A THR 56 n 56 THR 56 A TRP 57 n 57 TRP 57 A PHE 58 n 58 PHE 58 A SER 59 n 59 SER 59 A ILE 60 n 60 ILE 60 A PRO 61 n 61 PRO 61 A GLU 62 n 62 GLU 62 A LYS 63 n 63 LYS 63 A ASN 64 n 64 ASN 64 A ARG 65 n 65 ARG 65 A PRO 66 n 66 PRO 66 A LEU 67 n 67 LEU 67 A LYS 68 n 68 LYS 68 A GLY 69 n 69 GLY 69 A ARG 70 n 70 ARG 70 A ILE 71 n 71 ILE 71 A ASN 72 n 72 ASN 72 A LEU 73 n 73 LEU 73 A VAL 74 n 74 VAL 74 A LEU 75 n 75 LEU 75 A SER 76 n 76 SER 76 A ARG 77 n 77 ARG 77 A GLU 78 n 78 GLU 78 A LEU 79 n 79 LEU 79 A LYS 80 n 80 LYS 80 A GLU 81 n 81 GLU 81 A PRO 82 n 82 PRO 82 A PRO 83 n 83 PRO 83 A GLN 84 n 84 GLN 84 A GLY 85 n 85 GLY 85 A ALA 86 n 86 ALA 86 A HIS 87 n 87 HIS 87 A PHE 88 n 88 PHE 88 A LEU 89 n 89 LEU 89 A SER 90 n 90 SER 90 A ARG 91 n 91 ARG 91 A SER 92 n 92 SER 92 A LEU 93 n 93 LEU 93 A ASP 94 n 94 ASP 94 A ASP 95 n 95 ASP 95 A ALA 96 n 96 ALA 96 A LEU 97 n 97 LEU 97 A LYS 98 n 98 LYS 98 A LEU 99 n 99 LEU 99 A THR 100 n 100 THR 100 A GLU 101 n 101 GLU 101 A GLN 102 n 102 GLN 102 A PRO 103 n 103 PRO 103 A GLU 104 n 104 GLU 104 A LEU 105 n 105 LEU 105 A ALA 106 n 106 ALA 106 A ASN 107 n 107 ASN 107 A LYS 108 n 108 LYS 108 A VAL 109 n 109 VAL 109 A ASP 110 n 110 ASP 110 A MET 111 n 111 MET 111 A VAL 112 n 112 VAL 112 A TRP 113 n 113 TRP 113 A ILE 114 n 114 ILE 114 A VAL 115 n 115 VAL 115 A GLY 116 n 116 GLY 116 A GLY 117 n 117 GLY 117 A SER 118 n 118 SER 118 A SER 119 n 119 SER 119 A VAL 120 n 120 VAL 120 A TYR 121 n 121 TYR 121 A LYS 122 n 122 LYS 122 A GLU 123 n 123 GLU 123 A ALA 124 n 124 ALA 124 A MET 125 n 125 MET 125 A ASN 126 n 126 ASN 126 A HIS 127 n 127 HIS 127 A PRO 128 n 128 PRO 128 A GLY 129 n 129 GLY 129 A HIS 130 n 130 HIS 130 A LEU 131 n 131 LEU 131 A LYS 132 n 132 LYS 132 A LEU 133 n 133 LEU 133 A PHE 134 n 134 PHE 134 A VAL 135 n 135 VAL 135 A THR 136 n 136 THR 136 A ARG 137 n 137 ARG 137 A ILE 138 n 138 ILE 138 A MET 139 n 139 MET 139 A GLN 140 n 140 GLN 140 A ASP 141 n 141 ASP 141 A PHE 142 n 142 PHE 142 A GLU 143 n 143 GLU 143 A SER 144 n 144 SER 144 A ASP 145 n 145 ASP 145 A THR 146 n 146 THR 146 A PHE 147 n 147 PHE 147 A PHE 148 n 148 PHE 148 A PRO 149 n 149 PRO 149 A GLU 150 n 150 GLU 150 A ILE 151 n 151 ILE 151 A ASP 152 n 152 ASP 152 A LEU 153 n 153 LEU 153 A GLU 154 n 154 GLU 154 A LYS 155 n 155 LYS 155 A TYR 156 n 156 TYR 156 A LYS 157 n 157 LYS 157 A LEU 158 n 158 LEU 158 A LEU 159 n 159 LEU 159 A PRO 160 n 160 PRO 160 A GLU 161 n 161 GLU 161 A TYR 162 n 162 TYR 162 A PRO 163 n 163 PRO 163 A GLY 164 n 164 GLY 164 A VAL 165 n 165 VAL 165 A LEU 166 n 166 LEU 166 A SER 167 n 167 SER 167 A ASP 168 n 168 ASP 168 A VAL 169 n 169 VAL 169 A GLN 170 n 170 GLN 170 A GLU 171 n 171 GLU 171 A GLU 172 n 172 GLU 172 A LYS 173 n 173 LYS 173 A GLY 174 n 174 GLY 174 A ILE 175 n 175 ILE 175 A LYS 176 n 176 LYS 176 A TYR 177 n 177 TYR 177 A LYS 178 n 178 LYS 178 A PHE 179 n 179 PHE 179 A GLU 180 n 180 GLU 180 A VAL 181 n 181 VAL 181 A TYR 182 n 182 TYR 182 A GLU 183 n 183 GLU 183 A LYS 184 n 184 LYS 184 A ASN 185 n 185 ASN 185 A n 186 186 A n 1 1 B n 2 2 B n 3 3 B LEU 4 n 4 LEU 4 B ASN 5 n 5 ASN 5 B CYS 6 n 6 CYS 6 B ILE 7 n 7 ILE 7 B VAL 8 n 8 VAL 8 B ALA 9 n 9 ALA 9 B VAL 10 n 10 VAL 10 B SER 11 n 11 SER 11 B GLN 12 n 12 GLN 12 B ASN 13 n 13 ASN 13 B MET 14 n 14 MET 14 B GLY 15 n 15 GLY 15 B ILE 16 n 16 ILE 16 B GLY 17 n 17 GLY 17 B LYS 18 n 18 LYS 18 B ASN 19 n 19 ASN 19 B GLY 20 n 20 GLY 20 B ASP 21 n 21 ASP 21 B LEU 22 n 22 LEU 22 B PRO 23 n 23 PRO 23 B TRP 24 n 24 TRP 24 B PRO 25 n 25 PRO 25 B PRO 26 n 26 PRO 26 B LEU 27 n 27 LEU 27 B ARG 28 n 28 ARG 28 B ASN 29 n 29 ASN 29 B GLU 30 n 30 GLU 30 B PHE 31 n 31 PHE 31 B ARG 32 n 32 ARG 32 B TYR 33 n 33 TYR 33 B PHE 34 n 34 PHE 34 B GLN 35 n 35 GLN 35 B ARG 36 n 36 ARG 36 B MET 37 n 37 MET 37 B THR 38 n 38 THR 38 B THR 39 n 39 THR 39 B THR 40 n 40 THR 40 B SER 41 n 41 SER 41 B SER 42 n 42 SER 42 B VAL 43 n 43 VAL 43 B GLU 44 n 44 GLU 44 B GLY 45 n 45 GLY 45 B LYS 46 n 46 LYS 46 B GLN 47 n 47 GLN 47 B ASN 48 n 48 ASN 48 B LEU 49 n 49 LEU 49 B VAL 50 n 50 VAL 50 B ILE 51 n 51 ILE 51 B MET 52 n 52 MET 52 B GLY 53 n 53 GLY 53 B LYS 54 n 54 LYS 54 B LYS 55 n 55 LYS 55 B THR 56 n 56 THR 56 B TRP 57 n 57 TRP 57 B PHE 58 n 58 PHE 58 B SER 59 n 59 SER 59 B ILE 60 n 60 ILE 60 B PRO 61 n 61 PRO 61 B GLU 62 n 62 GLU 62 B LYS 63 n 63 LYS 63 B ASN 64 n 64 ASN 64 B ARG 65 n 65 ARG 65 B PRO 66 n 66 PRO 66 B LEU 67 n 67 LEU 67 B LYS 68 n 68 LYS 68 B GLY 69 n 69 GLY 69 B ARG 70 n 70 ARG 70 B ILE 71 n 71 ILE 71 B ASN 72 n 72 ASN 72 B LEU 73 n 73 LEU 73 B VAL 74 n 74 VAL 74 B LEU 75 n 75 LEU 75 B SER 76 n 76 SER 76 B ARG 77 n 77 ARG 77 B GLU 78 n 78 GLU 78 B LEU 79 n 79 LEU 79 B LYS 80 n 80 LYS 80 B GLU 81 n 81 GLU 81 B PRO 82 n 82 PRO 82 B PRO 83 n 83 PRO 83 B GLN 84 n 84 GLN 84 B GLY 85 n 85 GLY 85 B ALA 86 n 86 ALA 86 B HIS 87 n 87 HIS 87 B PHE 88 n 88 PHE 88 B LEU 89 n 89 LEU 89 B SER 90 n 90 SER 90 B ARG 91 n 91 ARG 91 B SER 92 n 92 SER 92 B LEU 93 n 93 LEU 93 B ASP 94 n 94 ASP 94 B ASP 95 n 95 ASP 95 B ALA 96 n 96 ALA 96 B LEU 97 n 97 LEU 97 B LYS 98 n 98 LYS 98 B LEU 99 n 99 LEU 99 B THR 100 n 100 THR 100 B GLU 101 n 101 GLU 101 B GLN 102 n 102 GLN 102 B PRO 103 n 103 PRO 103 B GLU 104 n 104 GLU 104 B LEU 105 n 105 LEU 105 B ALA 106 n 106 ALA 106 B ASN 107 n 107 ASN 107 B LYS 108 n 108 LYS 108 B VAL 109 n 109 VAL 109 B ASP 110 n 110 ASP 110 B MET 111 n 111 MET 111 B VAL 112 n 112 VAL 112 B TRP 113 n 113 TRP 113 B ILE 114 n 114 ILE 114 B VAL 115 n 115 VAL 115 B GLY 116 n 116 GLY 116 B GLY 117 n 117 GLY 117 B SER 118 n 118 SER 118 B SER 119 n 119 SER 119 B VAL 120 n 120 VAL 120 B TYR 121 n 121 TYR 121 B LYS 122 n 122 LYS 122 B GLU 123 n 123 GLU 123 B ALA 124 n 124 ALA 124 B MET 125 n 125 MET 125 B ASN 126 n 126 ASN 126 B HIS 127 n 127 HIS 127 B PRO 128 n 128 PRO 128 B GLY 129 n 129 GLY 129 B HIS 130 n 130 HIS 130 B LEU 131 n 131 LEU 131 B LYS 132 n 132 LYS 132 B LEU 133 n 133 LEU 133 B PHE 134 n 134 PHE 134 B VAL 135 n 135 VAL 135 B THR 136 n 136 THR 136 B ARG 137 n 137 ARG 137 B ILE 138 n 138 ILE 138 B MET 139 n 139 MET 139 B GLN 140 n 140 GLN 140 B ASP 141 n 141 ASP 141 B PHE 142 n 142 PHE 142 B GLU 143 n 143 GLU 143 B SER 144 n 144 SER 144 B ASP 145 n 145 ASP 145 B THR 146 n 146 THR 146 B PHE 147 n 147 PHE 147 B PHE 148 n 148 PHE 148 B PRO 149 n 149 PRO 149 B GLU 150 n 150 GLU 150 B ILE 151 n 151 ILE 151 B ASP 152 n 152 ASP 152 B LEU 153 n 153 LEU 153 B GLU 154 n 154 GLU 154 B LYS 155 n 155 LYS 155 B TYR 156 n 156 TYR 156 B LYS 157 n 157 LYS 157 B LEU 158 n 158 LEU 158 B LEU 159 n 159 LEU 159 B PRO 160 n 160 PRO 160 B GLU 161 n 161 GLU 161 B TYR 162 n 162 TYR 162 B PRO 163 n 163 PRO 163 B GLY 164 n 164 GLY 164 B VAL 165 n 165 VAL 165 B LEU 166 n 166 LEU 166 B SER 167 n 167 SER 167 B ASP 168 n 168 ASP 168 B VAL 169 n 169 VAL 169 B GLN 170 n 170 GLN 170 B GLU 171 n 171 GLU 171 B GLU 172 n 172 GLU 172 B LYS 173 n 173 LYS 173 B GLY 174 n 174 GLY 174 B ILE 175 n 175 ILE 175 B LYS 176 n 176 LYS 176 B TYR 177 n 177 TYR 177 B LYS 178 n 178 LYS 178 B PHE 179 n 179 PHE 179 B GLU 180 n 180 GLU 180 B VAL 181 n 181 VAL 181 B TYR 182 n 182 TYR 182 B GLU 183 n 183 GLU 183 B LYS 184 n 184 LYS 184 B ASN 185 n 185 ASN 185 B n 186 186 B author_defined_assembly 2 dimeric 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 O PHE 88 A O PHE 88 A N VAL 74 A N VAL 74 A N LEU 73 A N LEU 73 A O GLY 53 A O GLY 53 A N ILE 51 A N ILE 51 A O TRP 113 A O TRP 113 A N ILE 114 A N ILE 114 A O ASN 5 A O ASN 5 A O CYS 6 A O CYS 6 A N PHE 134 A N PHE 134 A O LEU 133 A O LEU 133 A N TYR 182 A N TYR 182 A N GLU 183 A N GLU 183 A O LYS 157 A O LYS 157 A O PHE 88 A O PHE 88 A N VAL 74 A N VAL 74 A N LEU 73 A N LEU 73 A O GLY 53 A O GLY 53 A N ILE 51 A N ILE 51 A O TRP 113 A O TRP 113 A N ILE 114 A N ILE 114 A O ASN 5 A O ASN 5 A O CYS 6 A O CYS 6 A N PHE 134 A N PHE 134 A O LEU 133 A O LEU 133 A N TYR 182 A N TYR 182 A N TYR 177 A N TYR 177 A O GLN 170 A O GLN 170 B O PHE 88 B O PHE 88 B N VAL 74 B N VAL 74 B N LEU 73 B N LEU 73 B O GLY 53 B O GLY 53 B N ILE 51 B N ILE 51 B O TRP 113 B O TRP 113 B N ILE 114 B N ILE 114 B O ASN 5 B O ASN 5 B O CYS 6 B O CYS 6 B N PHE 134 B N PHE 134 B O LEU 133 B O LEU 133 B N TYR 182 B N TYR 182 B N GLU 183 B N GLU 183 B O LYS 157 B O LYS 157 B O PHE 88 B O PHE 88 B N VAL 74 B N VAL 74 B N LEU 73 B N LEU 73 B O GLY 53 B O GLY 53 B N ILE 51 B N ILE 51 B O TRP 113 B O TRP 113 B N ILE 114 B N ILE 114 B O ASN 5 B O ASN 5 B O CYS 6 B O CYS 6 B N PHE 134 B N PHE 134 B O LEU 133 B O LEU 133 B N TYR 182 B N TYR 182 B N TYR 177 B N TYR 177 B O GLN 170 B O GLN 170 1 A VAL 1 A VAL 1 1 Y 1 A GLY 2 A GLY 2 1 Y 1 A SER 3 A SER 3 1 Y 1 A ASP 186 A ASP 186 1 Y 1 B VAL 1 B VAL 1 1 Y 1 B GLY 2 B GLY 2 1 Y 1 B SER 3 B SER 3 1 Y 1 B ASP 186 B ASP 186 1 Y 1 A A NE2 OE1 HIS GLU 130 183 1.92 1 A A O CE ASP LYS 94 98 2.05 1 B B NH1 O ARG GLY 36 164 2.08 1 A A O ND2 PRO ASN 103 107 2.10 1 A A O OG1 GLN THR 35 39 2.13 1 B B OE1 OH GLU TYR 180 182 2.14 1 B B CE1 OE1 HIS GLU 130 183 2.16 1 A ARG 28 0.125 SIDE CHAIN 1 A ARG 91 0.169 SIDE CHAIN 1 B ARG 28 0.161 SIDE CHAIN 1 B ARG 32 0.227 SIDE CHAIN 1 B ARG 65 0.179 SIDE CHAIN 1 B ARG 77 0.086 SIDE CHAIN 1 B ARG 91 0.080 SIDE CHAIN 1 -4.82 0.70 120.80 115.98 A A A CB CG CD1 PHE PHE PHE 58 58 58 N 1 16.52 2.20 113.40 129.92 A A A CA CB CG GLU GLU GLU 62 62 62 N 1 4.11 0.50 120.30 124.41 A A A NE CZ NH1 ARG ARG ARG 137 137 137 N 1 -5.48 0.90 118.30 112.82 A A A CB CG OD2 ASP ASP ASP 141 141 141 N 1 14.56 2.20 113.40 127.96 A A A CA CB CG GLU GLU GLU 172 172 172 N 1 15.83 2.00 110.40 126.23 B B B N CA CB LEU LEU LEU 22 22 22 N 1 32.00 2.30 115.30 147.30 B B B CA CB CG LEU LEU LEU 22 22 22 N 1 3.06 0.50 120.30 123.36 B B B NE CZ NH2 ARG ARG ARG 36 36 36 N 1 4.44 0.50 120.30 124.74 B B B NE CZ NH1 ARG ARG ARG 70 70 70 N 1 8.61 1.40 123.60 132.21 B B B CD NE CZ ARG ARG ARG 77 77 77 N 1 13.52 1.80 110.60 124.12 B B B N CA CB GLU GLU GLU 81 81 81 N 1 15.55 2.20 113.40 128.95 B B B CA CB CG GLU GLU GLU 81 81 81 N 1 11.14 1.50 110.50 121.64 B B B N CA CB SER SER SER 90 90 90 N 1 3.66 0.50 120.30 123.96 B B B NE CZ NH1 ARG ARG ARG 91 91 91 N 1 15.83 2.20 113.40 129.23 B B B CA CB CG GLU GLU GLU 104 104 104 N 1 14.83 2.10 122.30 137.13 B B B C N CA GLY GLY GLY 116 117 117 Y 1 -3.62 0.60 121.00 117.38 B B B CB CG CD2 TYR TYR TYR 162 162 162 N 1 3.71 0.60 121.00 124.71 B B B CB CG CD1 TYR TYR TYR 162 162 162 N 1 13.00 1.80 110.60 123.60 B B B N CA CB GLU GLU GLU 172 172 172 N 1 15.58 2.20 113.40 128.98 B B B CA CB CG GLU GLU GLU 172 172 172 N 1 A B OD1 NH1 ASP ARG 141 32 2.19 1_555 1_554 1 A LYS 18 -162.45 118.35 1 A ASN 19 56.89 4.18 1 A SER 76 -170.90 120.53 1 A LEU 99 -39.24 -33.63 1 A ASP 110 -106.94 -87.13 1 A MET 139 -67.58 71.12 1 A GLN 140 179.74 143.59 1 A PRO 160 -54.52 -5.63 1 A PRO 163 -35.60 124.95 1 B GLU 62 -35.78 -27.75 1 B GLU 78 -70.00 -90.01 1 B LEU 79 -2.84 131.66 1 B LYS 80 -75.27 -70.14 1 B ASP 110 -101.76 -83.80 1 B MET 139 -79.21 47.59 1 B PRO 160 -65.75 0.27 0.1760000 2.3 1 2.3 116 3132 64 0 2952 0.020 0.018 0.033 0.023 0.043 0.035 4.32 2.000 5.96 3.000 5.42 2.000 7.90 3.000 0.015 0.013 0.324 0.200 0.216 0.400 0.292 0.400 0.208 0.400 5.3 5.0 25.1 15.0 26.4 15.0 refinement PROLSQ CRYSTAL STRUCTURES OF RECOMBINANT HUMAN DIHYDROFOLATE REDUCTASE COMPLEXED WITH FOLATE AND 5-DEAZOFOLATE 1 N N 1 N N 2 N N 2 N N 3 N N 3 N N A LEU 27 A LEU 27 HELX_P A THR 40 A THR 40 1 BA 14 A GLY 53 A GLY 53 HELX_P A SER 59 A SER 59 1 CA 7 A SER 92 A SER 92 HELX_P A GLN 102 A GLN 102 1 EA 11 A GLN 102 A GLN 102 HELX_P NOT PRESENT IN BACTERIAL A VAL 109 A VAL 109 1 EPA 8 A GLY 117 A GLY 117 HELX_P A HIS 127 A HIS 127 1 FA 11 B LEU 27 B LEU 27 HELX_P B THR 40 B THR 40 1 BB 14 B GLY 53 B GLY 53 HELX_P B SER 59 B SER 59 1 CB 7 B SER 92 B SER 92 HELX_P B GLN 102 B GLN 102 1 EB 11 B GLN 102 B GLN 102 HELX_P NOT PRESENT IN BACTERIAL B VAL 109 B VAL 109 1 EPB 8 B GLY 117 B GLY 117 HELX_P B HIS 127 B HIS 127 1 FB 11 OXIDOREDUCTASE OXIDO-REDUCTASE, OXIDOREDUCTASE A ARG 65 A ARG 65 1 A PRO 66 A PRO 66 -0.43 A GLY 116 A GLY 116 1 A GLY 117 A GLY 117 3.67 B ARG 65 B ARG 65 1 B PRO 66 B PRO 66 -0.53 B GLY 116 B GLY 116 1 B GLY 117 B GLY 117 3.70 DYR_HUMAN UNP 1 1 P00374 VGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSRELK EPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLLP EYPGVLSDVQEEKGIKYKFEVYEKND 1 186 1DHF 1 186 P00374 A 1 1 186 1 186 1DHF 1 186 P00374 B 1 1 186 8 8 8 8 parallel parallel parallel parallel parallel anti-parallel anti-parallel parallel parallel parallel parallel parallel anti-parallel anti-parallel parallel parallel parallel parallel parallel anti-parallel anti-parallel parallel parallel parallel parallel parallel anti-parallel anti-parallel A PHE 88 A PHE 88 A SER 90 A SER 90 A ILE 71 A ILE 71 A SER 76 A SER 76 A GLN 47 A GLN 47 A GLY 53 A GLY 53 A LYS 108 A LYS 108 A GLY 116 A GLY 116 A LEU 4 A LEU 4 A VAL 10 A VAL 10 A HIS 130 A HIS 130 A MET 139 A MET 139 A ILE 175 A ILE 175 A ASN 185 A ASN 185 A LYS 157 A LYS 157 A LEU 159 A LEU 159 A PHE 88 A PHE 88 A SER 90 A SER 90 A ILE 71 A ILE 71 A SER 76 A SER 76 A GLN 47 A GLN 47 A GLY 53 A GLY 53 A LYS 108 A LYS 108 A GLY 116 A GLY 116 A LEU 4 A LEU 4 A VAL 10 A VAL 10 A HIS 130 A HIS 130 A MET 139 A MET 139 A ILE 175 A ILE 175 A ASN 185 A ASN 185 A ASP 168 A ASP 168 A GLU 172 A GLU 172 B PHE 88 B PHE 88 B SER 90 B SER 90 B ILE 71 B ILE 71 B SER 76 B SER 76 B GLN 47 B GLN 47 B GLY 53 B GLY 53 B LYS 108 B LYS 108 B GLY 116 B GLY 116 B LEU 4 B LEU 4 B VAL 10 B VAL 10 B HIS 130 B HIS 130 B MET 139 B MET 139 B ILE 175 B ILE 175 B ASN 185 B ASN 185 B LYS 157 B LYS 157 B LEU 159 B LEU 159 B PHE 88 B PHE 88 B SER 90 B SER 90 B ILE 71 B ILE 71 B SER 76 B SER 76 B GLN 47 B GLN 47 B GLY 53 B GLY 53 B LYS 108 B LYS 108 B GLY 116 B GLY 116 B LEU 4 B LEU 4 B VAL 10 B VAL 10 B HIS 130 B HIS 130 B MET 139 B MET 139 B ILE 175 B ILE 175 B ASN 185 B ASN 185 B ASP 168 B ASP 168 B GLU 172 B GLU 172 BINDING SITE FOR RESIDUE FOL A 187 A FOL 187 Software 16 BINDING SITE FOR RESIDUE FOL B 187 B FOL 187 Software 17 A ILE 7 A ILE 7 16 1_555 A VAL 8 A VAL 8 16 1_555 A ALA 9 A ALA 9 16 1_555 A GLU 30 A GLU 30 16 1_555 A PHE 31 A PHE 31 16 1_555 A ARG 32 A ARG 32 16 1_555 A PHE 34 A PHE 34 16 1_555 A GLN 35 A GLN 35 16 1_555 A ILE 60 A ILE 60 16 1_555 A PRO 61 A PRO 61 16 1_555 A ASN 64 A ASN 64 16 1_555 A LEU 67 A LEU 67 16 1_555 A ARG 70 A ARG 70 16 1_555 A VAL 115 A VAL 115 16 1_555 A TYR 121 A TYR 121 16 1_555 A THR 136 A THR 136 16 1_555 B ILE 7 B ILE 7 17 1_555 B VAL 8 B VAL 8 17 1_555 B ALA 9 B ALA 9 17 1_555 B GLU 30 B GLU 30 17 1_555 B PHE 31 B PHE 31 17 1_555 B ARG 32 B ARG 32 17 1_555 B PHE 34 B PHE 34 17 1_555 B GLN 35 B GLN 35 17 1_555 B ASN 64 B ASN 64 17 1_555 B LEU 67 B LEU 67 17 1_555 B ARG 70 B ARG 70 17 1_555 B VAL 115 B VAL 115 17 1_555 B TYR 121 B TYR 121 17 1_555 B THR 136 B THR 136 17 1_555 B HOH 401 F HOH 17 1_555 B HOH 402 F HOH 17 1_555 B HOH 410 F HOH 17 1_555 1 P 1