0.011698 0.006754 0.000000 0.000000 0.013507 0.000000 0.000000 0.000000 0.012885 0.00000 0.00000 0.00000 Cody, V. Galitsky, N. Luft, J.R. Pangborn, W.A. Gangjee, A. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 9 90.00 90.00 120.00 85.486 85.486 77.612 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 C18 H22 N6 O3 370.406 2,4-DIAMINO-6-[N-(3',4',5'-TRIMETHOXYBENZYL)-N-METHYLAMINO]PYRIDO[2,3-D]PYRIMIDINE 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 O4 S -2 96.063 SULFATE ION non-polymer 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 C Y 89 N C Y 90 N C Y 91 N C Y 92 N C Y 93 N C Y 94 N C N 95 N C Y 96 N C Y 97 N C Y 98 N C Y 99 N C Y 100 N C Y 101 N C N 102 N C N 103 N C N 104 N C N 105 N C Y 106 N N N 107 N N Y 108 N N N 109 N N Y 110 N N N 111 N N N 112 N O N 113 N O N 114 N O N 115 N H N 116 N H N 117 N H 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 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 N N 138 S C N 139 N C N 140 N O N 141 N C N 142 N C N 143 N C N 144 N O N 145 N N N 146 N O N 147 N H 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 N N 158 S C N 159 N C N 160 N O N 161 N C N 162 N C N 163 N C N 164 N O N 165 N O 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 N N 177 N C N 178 N C N 179 N O N 180 N O N 181 N H N 182 N H N 183 N H N 184 N H N 185 N H N 186 N N N 187 S C N 188 N C N 189 N O N 190 N C Y 191 N C Y 192 N N Y 193 N C Y 194 N C Y 195 N N N 196 N O N 197 N H N 198 N H 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 O N 208 N H N 209 N H N 210 N N N 211 S C N 212 N C N 213 N O N 214 S C N 215 N C N 216 N C N 217 N C N 218 N O 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 H N 228 N H N 229 N H N 230 N H N 231 N H N 232 N N N 233 S C N 234 N C N 235 N O N 236 N C N 237 N C N 238 N C N 239 N C N 240 N O 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 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 N N 255 S C N 256 N C N 257 N O N 258 N C N 259 N C N 260 N C N 261 N C N 262 N N N 263 N O 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 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 N N 280 S C N 281 N C N 282 N O N 283 N C N 284 N C N 285 N S N 286 N C N 287 N O N 288 N H N 289 N H 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 N N 300 S C N 301 N C N 302 N O N 303 N C Y 304 N C Y 305 N C Y 306 N C Y 307 N C Y 308 N C Y 309 N C N 310 N O 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 H N 319 N H N 320 N H N 321 N H N 322 N N N 323 S C N 324 N C N 325 N O N 326 N C N 327 N C N 328 N C N 329 N O N 330 N H N 331 N H 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 N N 340 S C N 341 N C N 342 N O N 343 N C N 344 N O N 345 N O N 346 N H N 347 N H N 348 N H N 349 N H N 350 N H N 351 N H N 352 N H N 353 N S N 354 N O N 355 N O N 356 N O N 357 N O N 358 N N N 359 S C N 360 N C N 361 N O N 362 R C N 363 N O N 364 N C N 365 N O 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 H N 373 N H N 374 N H N 375 N N N 376 S C N 377 N C N 378 N O N 379 N C Y 380 N C Y 381 N C Y 382 N C Y 383 N N Y 384 N C Y 385 N C Y 386 N C Y 387 N C Y 388 N C N 389 N O 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 H N 400 N H N 401 N H N 402 N N N 403 S C N 404 N C N 405 N O N 406 N C Y 407 N C Y 408 N C Y 409 N C Y 410 N C Y 411 N C Y 412 N C N 413 N O N 414 N O 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 H N 424 N H N 425 N H N 426 N N N 427 S C N 428 N C N 429 N O N 430 N C N 431 N C N 432 N C N 433 N O 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 442 N H N 443 N H N 444 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 doub N 84 N sing Y 85 N sing Y 86 N sing Y 87 N doub N 88 N sing Y 89 N doub Y 90 N sing Y 91 N sing N 92 N sing Y 93 N doub N 94 N sing Y 95 N sing N 96 N sing Y 97 N sing Y 98 N doub N 99 N sing N 100 N sing N 101 N sing N 102 N sing Y 103 N doub Y 104 N sing Y 105 N sing N 106 N sing Y 107 N doub N 108 N sing Y 109 N sing N 110 N sing Y 111 N doub N 112 N sing N 113 N sing N 114 N sing N 115 N sing N 116 N sing 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 sing 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 sing N 136 N sing N 137 N sing N 138 N sing N 139 N sing N 140 N doub N 141 N sing N 142 N sing N 143 N sing N 144 N sing N 145 N sing N 146 N sing N 147 N sing N 148 N doub 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 sing N 157 N sing N 158 N sing N 159 N doub 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 doub 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 doub N 187 N sing N 188 N sing N 189 N sing N 190 N sing Y 191 N sing Y 192 N doub Y 193 N doub N 194 N sing Y 195 N sing N 196 N sing Y 197 N sing N 198 N sing 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 doub 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 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 doub 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 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 doub N 252 N sing N 253 N sing 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 doub N 276 N sing N 277 N sing 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 doub N 295 N sing N 296 N sing N 297 N sing N 298 N sing Y 299 N doub Y 300 N sing Y 301 N sing N 302 N sing Y 303 N doub N 304 N sing Y 305 N doub N 306 N sing Y 307 N sing N 308 N sing N 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 doub N 318 N sing N 319 N sing 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 doub N 335 N sing N 336 N sing N 337 N sing N 338 N sing N 339 N sing N 340 N sing N 341 N doub N 342 N doub 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 sing N 350 N sing N 351 N doub 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 sing N 366 N sing N 367 N doub N 368 N sing N 369 N sing N 370 N sing N 371 N sing Y 372 N doub Y 373 N sing Y 374 N sing N 375 N sing Y 376 N doub Y 377 N sing Y 378 N sing N 379 N sing Y 380 N sing Y 381 N doub N 382 N sing Y 383 N doub N 384 N sing Y 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 sing N 394 N sing N 395 N doub N 396 N sing N 397 N sing N 398 N sing N 399 N sing Y 400 N doub Y 401 N sing Y 402 N sing N 403 N sing Y 404 N doub N 405 N sing Y 406 N doub N 407 N sing Y 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 sing N 418 N sing N 419 N doub 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 N 429 N sing N 430 N sing DK Acta Crystallogr.,Sect.D ABCRE6 0766 0907-4449 59 654 661 10.1107/S0907444903001951 12657784 Analysis of two polymorphic forms of a pyrido[2,3-d]pyrimidine N9-C10 reversed-bridge antifolate binary complex with human dihydrofolate reductase. 2003 10.2210/pdb1mvs/pdb pdb_00001mvs 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 298 1 mirrors IMAGE PLATE 1994-12-19 RIGAKU RAXIS II graphite SINGLE WAVELENGTH M x-ray 1 1.5418 1.0 1.5418 ROTATING ANODE RIGAKU RU200 21480.723 Dihydrofolate Reductase 1.5.1.3 1 man polymer 96.063 SULFATE ION 2 syn non-polymer 370.406 2,4-DIAMINO-6-[N-(3',4',5'-TRIMETHOXYBENZYL)-N-METHYLAMINO]PYRIDO[2,3-D]PYRIMIDINE 1 syn non-polymer 18.015 water 69 nat water no no MVGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSREL KEPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLL PEYPGVLSDVQEEKGIKYKFEVYEKND MVGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSREL KEPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLL PEYPGVLSDVQEEKGIKYKFEVYEKND 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 n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n 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 Escherichia sample 9606 Homo sapiens 562 Escherichia coli Bl21c plasmid pet11a 1 2.54 51.56 VAPOR DIFFUSION, HANGING DROP 6.8 0.1M phosphate buffer, 61% Ammonium sulfate, pH 6.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K 298 exptl_crystal_grow chem_comp_atom chem_comp_bond database_2 pdbx_initial_refinement_model struct_site repository Initial release Version format compliance Version format compliance Experimental preparation Data collection Database references Derived calculations Refinement description 1 0 2003-04-01 1 1 2008-04-28 1 2 2011-07-13 1 3 2018-02-14 1 4 2024-02-14 _exptl_crystal_grow.pdbx_details _exptl_crystal_grow.temp _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 Quinazoline and Pyridopyrimidine N9-C10 Reversed Bridge Antifolates In Complex With Nadp+ and Pneumocystis Carinii Dihydrofolate Reductase Quinazoline and Pyrido[2,3D]Pyrimidine N9-C10 Reversed Bridge Antifolates In Complex With Nadp+ and Pneumocystis Carinii Dihydrofolate Reductase Pyrido[2,3-d]pyrimidine N9-C10 Reverse-Bridge Antifolate Binary Complex with Human Dihydrofolate Reductase RCSB Y RCSB 2002-09-26 REL REL SO4 SULFATE ION DTM 2,4-DIAMINO-6-[N-(3',4',5'-TRIMETHOXYBENZYL)-N-METHYLAMINO]PYRIDO[2,3-D]PYRIMIDINE HOH water 1HFR PDB entry 1HFR PDB experimental model SUL 188 2 SO4 SO4 188 A SUL 189 2 SO4 SO4 189 A COE 187 3 DTM DTM 187 A HOH 190 4 HOH HOH 190 A HOH 191 4 HOH HOH 191 A HOH 192 4 HOH HOH 192 A HOH 193 4 HOH HOH 193 A HOH 194 4 HOH HOH 194 A HOH 195 4 HOH HOH 195 A HOH 196 4 HOH HOH 196 A HOH 197 4 HOH HOH 197 A HOH 198 4 HOH HOH 198 A HOH 199 4 HOH HOH 199 A HOH 200 4 HOH HOH 200 A HOH 201 4 HOH HOH 201 A HOH 202 4 HOH HOH 202 A HOH 203 4 HOH HOH 203 A HOH 204 4 HOH HOH 204 A HOH 205 4 HOH HOH 205 A HOH 206 4 HOH HOH 206 A HOH 207 4 HOH HOH 207 A HOH 208 4 HOH HOH 208 A HOH 209 4 HOH HOH 209 A HOH 210 4 HOH HOH 210 A HOH 211 4 HOH HOH 211 A HOH 212 4 HOH HOH 212 A HOH 213 4 HOH HOH 213 A HOH 214 4 HOH HOH 214 A HOH 215 4 HOH HOH 215 A HOH 216 4 HOH HOH 216 A HOH 217 4 HOH HOH 217 A HOH 218 4 HOH HOH 218 A HOH 219 4 HOH HOH 219 A HOH 220 4 HOH HOH 220 A HOH 221 4 HOH HOH 221 A HOH 222 4 HOH HOH 222 A HOH 223 4 HOH HOH 223 A HOH 224 4 HOH HOH 224 A HOH 225 4 HOH HOH 225 A HOH 226 4 HOH HOH 226 A HOH 227 4 HOH HOH 227 A HOH 228 4 HOH HOH 228 A HOH 229 4 HOH HOH 229 A HOH 230 4 HOH HOH 230 A HOH 231 4 HOH HOH 231 A HOH 232 4 HOH HOH 232 A HOH 233 4 HOH HOH 233 A HOH 234 4 HOH HOH 234 A HOH 235 4 HOH HOH 235 A HOH 236 4 HOH HOH 236 A HOH 237 4 HOH HOH 237 A HOH 238 4 HOH HOH 238 A HOH 239 4 HOH HOH 239 A HOH 240 4 HOH HOH 240 A HOH 241 4 HOH HOH 241 A HOH 242 4 HOH HOH 242 A HOH 243 4 HOH HOH 243 A HOH 244 4 HOH HOH 244 A HOH 245 4 HOH HOH 245 A HOH 246 4 HOH HOH 246 A HOH 247 4 HOH HOH 247 A HOH 248 4 HOH HOH 248 A HOH 249 4 HOH HOH 249 A HOH 250 4 HOH HOH 250 A HOH 251 4 HOH HOH 251 A HOH 252 4 HOH HOH 252 A HOH 253 4 HOH HOH 253 A HOH 254 4 HOH HOH 254 A HOH 255 4 HOH HOH 255 A HOH 256 4 HOH HOH 256 A HOH 257 4 HOH HOH 257 A HOH 258 4 HOH HOH 258 A n 1 0 A VAL 1 n 2 VAL 1 A GLY 2 n 3 GLY 2 A SER 3 n 4 SER 3 A LEU 4 n 5 LEU 4 A ASN 5 n 6 ASN 5 A CYS 6 n 7 CYS 6 A ILE 7 n 8 ILE 7 A VAL 8 n 9 VAL 8 A ALA 9 n 10 ALA 9 A VAL 10 n 11 VAL 10 A SER 11 n 12 SER 11 A GLN 12 n 13 GLN 12 A ASN 13 n 14 ASN 13 A MET 14 n 15 MET 14 A GLY 15 n 16 GLY 15 A ILE 16 n 17 ILE 16 A GLY 17 n 18 GLY 17 A LYS 18 n 19 LYS 18 A ASN 19 n 20 ASN 19 A GLY 20 n 21 GLY 20 A ASP 21 n 22 ASP 21 A LEU 22 n 23 LEU 22 A PRO 23 n 24 PRO 23 A TRP 24 n 25 TRP 24 A PRO 25 n 26 PRO 25 A PRO 26 n 27 PRO 26 A LEU 27 n 28 LEU 27 A ARG 28 n 29 ARG 28 A ASN 29 n 30 ASN 29 A GLU 30 n 31 GLU 30 A PHE 31 n 32 PHE 31 A ARG 32 n 33 ARG 32 A TYR 33 n 34 TYR 33 A PHE 34 n 35 PHE 34 A GLN 35 n 36 GLN 35 A ARG 36 n 37 ARG 36 A MET 37 n 38 MET 37 A THR 38 n 39 THR 38 A THR 39 n 40 THR 39 A THR 40 n 41 THR 40 A SER 41 n 42 SER 41 A SER 42 n 43 SER 42 A VAL 43 n 44 VAL 43 A GLU 44 n 45 GLU 44 A GLY 45 n 46 GLY 45 A LYS 46 n 47 LYS 46 A GLN 47 n 48 GLN 47 A ASN 48 n 49 ASN 48 A LEU 49 n 50 LEU 49 A VAL 50 n 51 VAL 50 A ILE 51 n 52 ILE 51 A MET 52 n 53 MET 52 A GLY 53 n 54 GLY 53 A LYS 54 n 55 LYS 54 A LYS 55 n 56 LYS 55 A THR 56 n 57 THR 56 A TRP 57 n 58 TRP 57 A PHE 58 n 59 PHE 58 A SER 59 n 60 SER 59 A ILE 60 n 61 ILE 60 A PRO 61 n 62 PRO 61 A GLU 62 n 63 GLU 62 A LYS 63 n 64 LYS 63 A ASN 64 n 65 ASN 64 A ARG 65 n 66 ARG 65 A PRO 66 n 67 PRO 66 A LEU 67 n 68 LEU 67 A LYS 68 n 69 LYS 68 A GLY 69 n 70 GLY 69 A ARG 70 n 71 ARG 70 A ILE 71 n 72 ILE 71 A ASN 72 n 73 ASN 72 A LEU 73 n 74 LEU 73 A VAL 74 n 75 VAL 74 A LEU 75 n 76 LEU 75 A SER 76 n 77 SER 76 A ARG 77 n 78 ARG 77 A GLU 78 n 79 GLU 78 A LEU 79 n 80 LEU 79 A LYS 80 n 81 LYS 80 A GLU 81 n 82 GLU 81 A PRO 82 n 83 PRO 82 A PRO 83 n 84 PRO 83 A GLN 84 n 85 GLN 84 A GLY 85 n 86 GLY 85 A ALA 86 n 87 ALA 86 A HIS 87 n 88 HIS 87 A PHE 88 n 89 PHE 88 A LEU 89 n 90 LEU 89 A SER 90 n 91 SER 90 A ARG 91 n 92 ARG 91 A SER 92 n 93 SER 92 A LEU 93 n 94 LEU 93 A ASP 94 n 95 ASP 94 A ASP 95 n 96 ASP 95 A ALA 96 n 97 ALA 96 A LEU 97 n 98 LEU 97 A LYS 98 n 99 LYS 98 A LEU 99 n 100 LEU 99 A THR 100 n 101 THR 100 A GLU 101 n 102 GLU 101 A GLN 102 n 103 GLN 102 A PRO 103 n 104 PRO 103 A GLU 104 n 105 GLU 104 A LEU 105 n 106 LEU 105 A ALA 106 n 107 ALA 106 A ASN 107 n 108 ASN 107 A LYS 108 n 109 LYS 108 A VAL 109 n 110 VAL 109 A ASP 110 n 111 ASP 110 A MET 111 n 112 MET 111 A VAL 112 n 113 VAL 112 A TRP 113 n 114 TRP 113 A ILE 114 n 115 ILE 114 A VAL 115 n 116 VAL 115 A GLY 116 n 117 GLY 116 A GLY 117 n 118 GLY 117 A SER 118 n 119 SER 118 A SER 119 n 120 SER 119 A VAL 120 n 121 VAL 120 A TYR 121 n 122 TYR 121 A LYS 122 n 123 LYS 122 A GLU 123 n 124 GLU 123 A ALA 124 n 125 ALA 124 A MET 125 n 126 MET 125 A ASN 126 n 127 ASN 126 A HIS 127 n 128 HIS 127 A PRO 128 n 129 PRO 128 A GLY 129 n 130 GLY 129 A HIS 130 n 131 HIS 130 A LEU 131 n 132 LEU 131 A LYS 132 n 133 LYS 132 A LEU 133 n 134 LEU 133 A PHE 134 n 135 PHE 134 A VAL 135 n 136 VAL 135 A THR 136 n 137 THR 136 A ARG 137 n 138 ARG 137 A ILE 138 n 139 ILE 138 A MET 139 n 140 MET 139 A GLN 140 n 141 GLN 140 A ASP 141 n 142 ASP 141 A PHE 142 n 143 PHE 142 A GLU 143 n 144 GLU 143 A SER 144 n 145 SER 144 A ASP 145 n 146 ASP 145 A THR 146 n 147 THR 146 A PHE 147 n 148 PHE 147 A PHE 148 n 149 PHE 148 A PRO 149 n 150 PRO 149 A GLU 150 n 151 GLU 150 A ILE 151 n 152 ILE 151 A ASP 152 n 153 ASP 152 A LEU 153 n 154 LEU 153 A GLU 154 n 155 GLU 154 A LYS 155 n 156 LYS 155 A TYR 156 n 157 TYR 156 A LYS 157 n 158 LYS 157 A LEU 158 n 159 LEU 158 A LEU 159 n 160 LEU 159 A PRO 160 n 161 PRO 160 A GLU 161 n 162 GLU 161 A TYR 162 n 163 TYR 162 A PRO 163 n 164 PRO 163 A GLY 164 n 165 GLY 164 A VAL 165 n 166 VAL 165 A LEU 166 n 167 LEU 166 A SER 167 n 168 SER 167 A ASP 168 n 169 ASP 168 A VAL 169 n 170 VAL 169 A GLN 170 n 171 GLN 170 A GLU 171 n 172 GLU 171 A GLU 172 n 173 GLU 172 A LYS 173 n 174 LYS 173 A GLY 174 n 175 GLY 174 A ILE 175 n 176 ILE 175 A LYS 176 n 177 LYS 176 A TYR 177 n 178 TYR 177 A LYS 178 n 179 LYS 178 A PHE 179 n 180 PHE 179 A GLU 180 n 181 GLU 180 A VAL 181 n 182 VAL 181 A TYR 182 n 183 TYR 182 A GLU 183 n 184 GLU 183 A LYS 184 n 185 LYS 184 A ASN 185 n 186 ASN 185 A ASP 186 n 187 ASP 186 A author_defined_assembly 1 monomeric 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 SER 90 A O SER 91 A N VAL 74 A N VAL 75 A O ILE 71 A O ILE 72 A N VAL 50 A N VAL 51 A N LEU 49 A N LEU 50 A O TRP 113 A O TRP 114 A O ILE 114 A O ILE 115 A N ASN 5 A N ASN 6 A N VAL 10 A N VAL 11 A O ILE 138 A O ILE 139 A N VAL 135 A N VAL 136 A O GLU 180 A O GLU 181 A O GLU 183 A O GLU 184 A N LYS 157 A N LYS 158 A O SER 90 A O SER 91 A N VAL 74 A N VAL 75 A O ILE 71 A O ILE 72 A N VAL 50 A N VAL 51 A N LEU 49 A N LEU 50 A O TRP 113 A O TRP 114 A O ILE 114 A O ILE 115 A N ASN 5 A N ASN 6 A N VAL 10 A N VAL 11 A O ILE 138 A O ILE 139 A N VAL 135 A N VAL 136 A O GLU 180 A O GLU 181 A O TYR 177 A O TYR 178 A N GLN 170 A N GLN 171 A O GLY 17 A O GLY 18 A N THR 146 A N THR 147 1 A MET 0 A MET 1 1 Y 1 A A O O HOH HOH 248 251 1.82 1 A A O OG1 GLN THR 35 39 2.15 1 A A O O VAL HOH 1 190 2.17 1 A A O4 O SO4 HOH 189 228 2.19 1 -9.77 1.50 110.50 100.73 A A A N CA CB SER SER SER 3 3 3 N 1 15.08 2.50 121.70 136.78 A A A C N CA ILE VAL VAL 7 8 8 Y 1 -10.42 0.90 118.30 107.88 A A A CB CG OD2 ASP ASP ASP 21 21 21 N 1 6.35 0.50 120.30 126.65 A A A NE CZ NH1 ARG ARG ARG 28 28 28 N 1 -6.05 0.50 120.30 114.25 A A A NE CZ NH2 ARG ARG ARG 28 28 28 N 1 -4.41 0.50 120.30 115.89 A A A NE CZ NH1 ARG ARG ARG 32 32 32 N 1 -5.37 0.60 121.00 115.63 A A A CB CG CD2 TYR TYR TYR 33 33 33 N 1 6.22 0.60 121.00 127.22 A A A CB CG CD1 TYR TYR TYR 33 33 33 N 1 56.39 1.40 123.60 179.99 A A A CD NE CZ ARG ARG ARG 36 36 36 N 1 -4.60 0.50 120.30 115.70 A A A NE CZ NH1 ARG ARG ARG 36 36 36 N 1 7.72 0.50 120.30 128.02 A A A NE CZ NH2 ARG ARG ARG 36 36 36 N 1 8.22 1.20 123.30 131.52 A A A OE1 CD OE2 GLU GLU GLU 44 44 44 N 1 20.97 2.20 113.40 134.37 A A A CA CB CG GLN GLN GLN 47 47 47 N 1 10.18 1.50 110.90 121.08 A A A CA CB CG2 VAL VAL VAL 50 50 50 N 1 3.58 0.50 120.30 123.88 A A A NE CZ NH1 ARG ARG ARG 70 70 70 N 1 -3.83 0.50 120.30 116.47 A A A NE CZ NH2 ARG ARG ARG 70 70 70 N 1 17.38 1.40 123.60 140.98 A A A CD NE CZ ARG ARG ARG 77 77 77 N 1 6.02 0.50 120.30 126.32 A A A NE CZ NH1 ARG ARG ARG 77 77 77 N 1 -3.93 0.50 120.30 116.37 A A A NE CZ NH2 ARG ARG ARG 77 77 77 N 1 -7.54 1.20 123.30 115.76 A A A OE1 CD OE2 GLU GLU GLU 78 78 78 N 1 12.52 2.00 118.30 130.82 A A A CG CD OE1 GLU GLU GLU 78 78 78 N 1 -12.08 2.00 118.30 106.22 A A A CG CD OE2 GLU GLU GLU 81 81 81 N 1 10.47 1.40 123.60 134.07 A A A CD NE CZ ARG ARG ARG 91 91 91 N 1 14.05 2.30 115.30 129.35 A A A CA CB CG LEU LEU LEU 99 99 99 N 1 7.64 1.20 123.30 130.94 A A A OE1 CD OE2 GLU GLU GLU 104 104 104 N 1 10.74 0.90 118.30 129.04 A A A CB CG OD1 ASP ASP ASP 110 110 110 N 1 10.20 1.50 110.90 121.10 A A A CA CB CG2 VAL VAL VAL 115 115 115 N 1 4.04 0.60 121.00 125.04 A A A CB CG CD2 TYR TYR TYR 121 121 121 N 1 -4.32 0.60 121.00 116.68 A A A CB CG CD1 TYR TYR TYR 121 121 121 N 1 12.71 1.20 123.30 136.01 A A A OE1 CD OE2 GLU GLU GLU 123 123 123 N 1 17.63 2.10 111.70 129.33 A A A CB CA C PRO PRO PRO 128 128 128 N 1 10.62 1.60 122.70 133.32 A A A O C N GLY GLY HIS 129 129 130 Y 1 -4.61 0.50 120.30 115.69 A A A NE CZ NH1 ARG ARG ARG 137 137 137 N 1 5.84 0.90 118.30 124.14 A A A CB CG OD1 ASP ASP ASP 145 145 145 N 1 18.00 2.70 114.20 132.20 A A A CB CG CD GLU GLU GLU 150 150 150 N 1 -5.56 0.90 118.30 112.74 A A A CB CG OD1 ASP ASP ASP 152 152 152 N 1 6.76 0.90 118.30 125.06 A A A CB CG OD2 ASP ASP ASP 152 152 152 N 1 -4.53 0.60 121.00 116.47 A A A CB CG CD1 TYR TYR TYR 162 162 162 N 1 -10.58 1.50 110.90 100.32 A A A CA CB CG2 VAL VAL VAL 169 169 169 N 1 11.42 1.80 110.60 122.02 A A A N CA CB GLU GLU GLU 172 172 172 N 1 4.01 0.60 121.00 125.01 A A A CB CG CD2 TYR TYR TYR 177 177 177 N 1 -4.24 0.60 121.00 116.76 A A A CB CG CD1 TYR TYR TYR 177 177 177 N 1 16.06 2.00 118.30 134.36 A A A CG CD OE1 GLU GLU GLU 180 180 180 N 1 -12.24 2.00 118.30 106.06 A A A CG CD OE2 GLU GLU GLU 180 180 180 N 1 A SER 42 -86.95 42.29 1 A VAL 43 -172.61 130.28 1 A GLU 104 -145.56 -55.99 1 A ASP 110 -98.38 -89.54 1 A MET 139 -67.12 32.50 1 A LYS 173 39.87 49.64 9.5 Used weighted full matrix least squares 0.186 0.212 1.90 8.00 960 9689 90.6 1 Isotropic 2.0 MOLECULAR REPLACEMENT PDB entry 1HFR Engh & Huber 0.024 0.2 1.90 8.00 69 1608 37 0 1502 0.024 0.061 0.065 0.019 25.67 1.9 8.0 1MVS 9689 2.0 2.0 1 90.6 1.90 2.00 61.2 data reduction DENZO data scaling SCALEPACK model building PROTEIN refinement PROLSQ phasing PROTEIN Analysis of Two Polymorphic Forms of a Pyrido[2,3-d]pyrimidine N9-C10 Reverse-Bridge Antifolate Binary Complex with Human Dihydrofolate Reductase 1 N N 2 N N 2 N N 3 N N 4 N N A LEU 27 A LEU 28 HELX_P A THR 40 A THR 41 1 1 14 A LYS 54 A LYS 55 HELX_P A SER 59 A SER 60 1 2 6 A ILE 60 A ILE 61 HELX_P A ILE 60 A ILE 61 5 3 1 A PRO 61 A PRO 62 HELX_P A ARG 65 A ARG 66 5 4 5 A SER 92 A SER 93 HELX_P A GLN 102 A GLN 103 1 5 11 A GLY 117 A GLY 118 HELX_P A MET 125 A MET 126 1 6 9 OXIDOREDUCTASE Dihydrofolate Reductase, human DHFR, antifolate, N9-C10 reverse bridge pyrolopyrimidine, oxidoreductase A ARG 65 A ARG 66 1 A PRO 66 A PRO 67 -1.85 A GLY 116 A GLY 117 1 A GLY 117 A GLY 118 0.47 DYR_HUMAN UNP 1 0 P00374 MVGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSREL KEPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLL PEYPGVLSDVQEEKGIKYKFEVYEKND 0 186 1MVS 0 186 P00374 A 1 1 187 8 8 2 parallel parallel parallel parallel parallel anti-parallel anti-parallel parallel parallel parallel parallel parallel anti-parallel anti-parallel anti-parallel A PHE 88 A PHE 89 A SER 90 A SER 91 A ILE 71 A ILE 72 A LEU 75 A LEU 76 A GLN 47 A GLN 48 A GLY 53 A GLY 54 A VAL 109 A VAL 110 A ILE 114 A ILE 115 A LEU 4 A LEU 5 A VAL 10 A VAL 11 A HIS 130 A HIS 131 A ILE 138 A ILE 139 A ILE 175 A ILE 176 A ASN 185 A ASN 186 A LYS 157 A LYS 158 A LEU 158 A LEU 159 A PHE 88 A PHE 89 A SER 90 A SER 91 A ILE 71 A ILE 72 A LEU 75 A LEU 76 A GLN 47 A GLN 48 A GLY 53 A GLY 54 A VAL 109 A VAL 110 A ILE 114 A ILE 115 A LEU 4 A LEU 5 A VAL 10 A VAL 11 A HIS 130 A HIS 131 A ILE 138 A ILE 139 A ILE 175 A ILE 176 A ASN 185 A ASN 186 A GLN 170 A GLN 171 A GLU 172 A GLU 173 A GLY 15 A GLY 16 A GLY 17 A GLY 18 A THR 146 A THR 147 A PHE 147 A PHE 148 BINDING SITE FOR RESIDUE SO4 A 188 A SO4 188 Software 5 BINDING SITE FOR RESIDUE SO4 A 189 A SO4 189 Software 8 BINDING SITE FOR RESIDUE DTM A 187 A DTM 187 Software 13 A SER 76 A SER 77 5 1_555 A ARG 77 A ARG 78 5 1_555 A GLU 78 A GLU 79 5 1_555 A HOH 241 E HOH 5 1_555 A HOH 244 E HOH 5 1_555 A GLY 53 A GLY 54 8 1_555 A LYS 54 A LYS 55 8 1_555 A LYS 55 A LYS 56 8 1_555 A THR 56 A THR 57 8 1_555 A GLY 117 A GLY 118 8 1_555 A SER 119 A SER 120 8 1_555 A VAL 120 A VAL 121 8 1_555 A HOH 228 E HOH 8 1_555 A ILE 7 A ILE 8 13 1_555 A VAL 8 A VAL 9 13 1_555 A GLU 30 A GLU 31 13 1_555 A PHE 31 A PHE 32 13 1_555 A PHE 34 A PHE 35 13 1_555 A SER 59 A SER 60 13 1_555 A ILE 60 A ILE 61 13 1_555 A PRO 61 A PRO 62 13 1_555 A ASN 64 A ASN 65 13 1_555 A LEU 67 A LEU 68 13 1_555 A VAL 115 A VAL 116 13 1_555 A TYR 121 A TYR 122 13 1_555 A THR 136 A THR 137 13 1_555 146 H 3