0.011211 0.000000 0.007792 0.000000 0.020700 0.000000 0.000000 0.000000 0.018960 0.00000 0.00000 0.00000 RESIDUES 21-26 (NLPWPP) FORM LEFT-HANDED POLYPROLINE HELIX. CIS PROLINE - PRO 66 RESIDUE 102 PARTICIPATES IN BOTH HELIX E AND HELIX EP. RESIDUES 108 AND 109 PARTICIPATE IN BOTH HELIX EP AND BETA STRAND E. RESIDUES 110 AND 111 FORM A BETA-BULGE IN STRAND E. RESIDUES 115 AND 116 FORM A BETA-BULGE IN STRAND E. PEPTIDE BOND JOINING GLY 116 AND GLY 117 IS CIS. TIGHT TURN 7 (RESIDUES 162-165) DISRUPT LAST STRAND OF SHEET INTO 2 STRANDS 8 AND 9. THIS STRAND IS CONTINUOUS IN E. COLI. A BETA BULGE IS PRESENT HERE IN L. CASEI. RESIDUES 172 AND 175 PARTICIPATE IN BOTH TIGHT-TURN 8 AND BETA STRANDS 7 AND 9. RESIDUE 200 (CALCIUM ION) LIES ON THE CRYSTALLOGRAPHIC TWO-FOLD AT ONE-HALF OCCUPANCY. Mctigue, M.A. Davies /II, J.F. Kaufman, B.T. Xuong, N.-H. Kraut, J. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 4 90.00 124.80 90.00 89.200 48.310 64.230 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 Ca 2 40.078 CALCIUM ION non-polymer 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 C9 H13 N5 O3 239.231 7,8-DIHYDROBIOPTERIN non-polymer 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 C21 H28 N7 O16 P3 S 759.471 7-THIONICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE TATP 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 CA N 75 N N N 76 R C N 77 N C N 78 N O N 79 N C N 80 N S N 81 N O 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 H N 89 N N N 90 S C N 91 N C N 92 N O N 93 N C N 94 N C N 95 N C N 96 N O N 97 N N N 98 N O 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 H N 109 N N N 110 S C N 111 N C N 112 N O N 113 N C N 114 N C N 115 N C N 116 N O N 117 N O N 118 N O 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 N N 129 N C N 130 N C N 131 N O N 132 N O N 133 N H N 134 N H N 135 N H N 136 N H N 137 N H Y 138 N N N 139 N N Y 140 N C Y 141 N N Y 142 N C N 143 N O Y 144 N C Y 145 N C N 146 N N N 147 N C N 148 N C N 149 N N N 150 R C N 151 N O N 152 S C N 153 N O N 154 N C N 155 N H N 156 N H N 157 N H N 158 N H N 159 N H N 160 N H N 161 N H N 162 N H N 163 N H N 164 N H N 165 N H N 166 N H N 167 N H N 168 N N N 169 S C N 170 N C N 171 N O N 172 N C Y 173 N C Y 174 N N Y 175 N C Y 176 N C Y 177 N N N 178 N O N 179 N H N 180 N H N 181 N H N 182 N H N 183 N H N 184 N H N 185 N H N 186 N H N 187 N H N 188 N H N 189 N O N 190 N H N 191 N H N 192 N N N 193 S C N 194 N C N 195 N O N 196 S C N 197 N C N 198 N C N 199 N C N 200 N O 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 H N 210 N H N 211 N H N 212 N H N 213 N H N 214 N N N 215 S C N 216 N C N 217 N O N 218 N C N 219 N C N 220 N C N 221 N C N 222 N O 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 H N 235 N H N 236 N N N 237 S C N 238 N C N 239 N O N 240 N C N 241 N C N 242 N C N 243 N C N 244 N N N 245 N O 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 H N 257 N H N 258 N H N 259 N H N 260 N H N 261 N N N 262 S C N 263 N C N 264 N O N 265 N C N 266 N C N 267 N S N 268 N C N 269 N O 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 Y 286 N C Y 287 N C Y 288 N C Y 289 N C Y 290 N C Y 291 N C N 292 N O 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 H N 302 N H N 303 N H N 304 N N N 305 S C N 306 N C N 307 N O N 308 N C N 309 N C N 310 N C N 311 N O 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 N N 322 S C N 323 N C N 324 N O N 325 N C N 326 N O N 327 N O N 328 N H N 329 N H N 330 N H N 331 N H N 332 N H N 333 N H N 334 N H N 335 R P N 336 N O N 337 N O N 338 N O N 339 N C N 340 R C N 341 N O N 342 R C N 343 N O N 344 R C N 345 N O N 346 R C Y 347 N N Y 348 N C Y 349 N N Y 350 N C Y 351 N C N 352 N N Y 353 N N Y 354 N C Y 355 N N Y 356 N C N 357 N O N 358 N P N 359 N O N 360 N O N 361 N O N 362 N C N 363 R C N 364 N O N 365 S C N 366 N O N 367 R C N 368 N O N 369 R C Y 370 N N Y 371 N C Y 372 N C N 373 N C N 374 N S N 375 N N Y 376 N C Y 377 N C Y 378 N C N 379 N P N 380 N O N 381 N O N 382 N O N 383 N H N 384 N H N 385 N H N 386 N H 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 H N 400 N H N 401 N H N 402 N H N 403 N H N 404 N H N 405 N H N 406 N H N 407 N H N 408 N H N 409 N H N 410 N H N 411 N N N 412 S C N 413 N C N 414 N O N 415 R C N 416 N O N 417 N C N 418 N O 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 H N 427 N H N 428 N N N 429 S C N 430 N C N 431 N O N 432 N C Y 433 N C Y 434 N C Y 435 N C Y 436 N N Y 437 N C Y 438 N C Y 439 N C Y 440 N C Y 441 N C N 442 N O N 443 N H N 444 N H N 445 N H N 446 N H N 447 N H N 448 N H N 449 N H N 450 N H N 451 N H N 452 N H N 453 N H N 454 N H N 455 N N N 456 S C N 457 N C N 458 N O N 459 N C Y 460 N C Y 461 N C Y 462 N C Y 463 N C Y 464 N C Y 465 N C N 466 N O N 467 N O N 468 N H N 469 N H N 470 N H N 471 N H N 472 N H N 473 N H N 474 N H N 475 N H N 476 N H N 477 N H N 478 N H N 479 N N N 480 S C N 481 N C N 482 N O N 483 N C N 484 N C N 485 N C N 486 N O N 487 N H N 488 N H N 489 N H N 490 N H N 491 N H N 492 N H N 493 N H N 494 N H N 495 N H N 496 N H N 497 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 Y 129 N doub Y 130 N sing N 131 N sing N 132 N sing N 133 N sing Y 134 N sing Y 135 N sing N 136 N sing N 137 N doub Y 138 N sing Y 139 N doub N 140 N sing 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 doub 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 sing 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 doub N 167 N sing N 168 N sing N 169 N sing N 170 N sing Y 171 N sing Y 172 N doub Y 173 N doub N 174 N sing Y 175 N sing N 176 N sing Y 177 N sing 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 doub 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 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 sing N 210 N doub 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 sing N 231 N doub 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 sing N 252 N sing N 253 N sing N 254 N sing N 255 N doub 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 doub N 275 N sing N 276 N sing N 277 N sing N 278 N sing Y 279 N doub Y 280 N sing Y 281 N sing N 282 N sing Y 283 N doub N 284 N sing Y 285 N doub N 286 N sing Y 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 sing N 297 N doub 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 sing N 311 N sing N 312 N sing N 313 N sing N 314 N doub N 315 N sing N 316 N sing N 317 N sing N 318 N sing N 319 N sing N 320 N sing N 321 N doub 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 sing 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 Y 344 N sing Y 345 N sing Y 346 N doub N 347 N sing Y 348 N sing Y 349 N sing Y 350 N doub N 351 N sing Y 352 N doub N 353 N sing N 354 N sing Y 355 N sing Y 356 N doub N 357 N sing Y 358 N sing N 359 N sing N 360 N doub 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 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 N 374 N sing N 375 N sing N 376 N sing N 377 N sing N 378 N sing N 379 N sing N 380 N sing Y 381 N sing Y 382 N doub Y 383 N doub N 384 N sing N 385 N sing Y 386 N sing N 387 N doub N 388 N sing N 389 N sing N 390 N sing Y 391 N doub N 392 N sing Y 393 N sing N 394 N sing N 395 N sing N 396 N doub N 397 N sing N 398 N sing N 399 N sing N 400 N sing N 401 N sing N 402 N sing N 403 N sing N 404 N sing N 405 N sing N 406 N sing N 407 N doub 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 sing N 418 N sing N 419 N sing N 420 N sing N 421 N sing N 422 N sing N 423 N doub N 424 N sing N 425 N sing N 426 N sing N 427 N sing Y 428 N doub Y 429 N sing Y 430 N sing N 431 N sing Y 432 N doub Y 433 N sing Y 434 N sing N 435 N sing Y 436 N sing Y 437 N doub N 438 N sing Y 439 N doub N 440 N sing Y 441 N sing N 442 N sing N 443 N sing N 444 N sing N 445 N sing N 446 N sing N 447 N sing N 448 N sing N 449 N sing N 450 N sing N 451 N doub N 452 N sing N 453 N sing N 454 N sing N 455 N sing Y 456 N doub Y 457 N sing Y 458 N sing N 459 N sing Y 460 N doub N 461 N sing Y 462 N doub N 463 N sing Y 464 N sing N 465 N sing N 466 N sing N 467 N sing N 468 N sing N 469 N sing N 470 N sing N 471 N sing N 472 N sing N 473 N sing N 474 N sing N 475 N doub N 476 N sing N 477 N sing N 478 N sing N 479 N sing N 480 N sing N 481 N sing N 482 N sing N 483 N sing N 484 N sing N 485 N sing N 486 N sing US Biochemistry BICHAW 0033 0006-2960 32 6855 6862 10.1021/bi00078a008 8334118 Crystal structures of chicken liver dihydrofolate reductase: binary thioNADP+ and ternary thioNADP+.biopterin complexes. 1993 US Biochemistry BICHAW 0033 0006-2960 29 9467 Crystal Structures of Recombinant Human Dihydrofolate Reductase Complexed with Folate and 5-Deazafolate 1990 US J.Biol.Chem. JBCHA3 0071 0021-9258 260 381 Refined Crystal Structure of Escherichia Coli and Chicken Liver Dihydrofolate Reductase Containing Bound Trimethoprim 1985 US J.Biol.Chem. JBCHA3 0071 0021-9258 260 392 Dihydrofolate Reductase, the Stereochemistry of Inhibitor Selectivity 1985 US J.Biol.Chem. JBCHA3 0071 0021-9258 257 2528 Crystal Structure of Avian Dihydrofolate Reductase Containing Phenyltriazine and Nadph 1982 US Biochemistry BICHAW 0033 0006-2960 19 667 Primary Structure of Chicken Liver Dihydrofolate Reductase 1980 10.2210/pdb1dr3/pdb pdb_00001dr3 0.011211 0.000000 0.007792 0.000000 0.020700 0.000000 0.000000 0.000000 0.018960 0.00000 0.00000 0.00000 1 x-ray 1 1.0 21679.932 DIHYDROFOLATE REDUCTASE 1.5.1.3 1 man polymer 40.078 CALCIUM ION 1 syn non-polymer 759.471 7-THIONICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE 1 syn non-polymer 239.231 7,8-DIHYDROBIOPTERIN 1 syn non-polymer 18.015 water 110 nat water no no VRSLNSIVAVCQNMGIGKDGNLPWPPLRNEYKYFQRMTSTSHVEGKQNAVIMGKKTWFSIPEKNRPLKDRINIVLSRELK EAPKGAHYLSKSLDDALALLDSPELKSKVDMVWIVGGTAVYKAAMEKPINHRLFVTRILHEFESDTFFPEIDYKDFKLLT EYPGVPADIQEEDGIQYKFEVYQKSVLAQ VRSLNSIVAVCQNMGIGKDGNLPWPPLRNEYKYFQRMTSTSHVEGKQNAVIMGKKTWFSIPEKNRPLKDRINIVLSRELK EAPKGAHYLSKSLDDALALLDSPELKSKVDMVWIVGGTAVYKAAMEKPINHRLFVTRILHEFESDTFFPEIDYKDFKLLT EYPGVPADIQEEDGIQYKFEVYQKSVLAQ 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 n n chicken Gallus sample 9031 LIVER Gallus gallus 2.62 53.04 pdbx_database_status struct_conf struct_conf_type chem_comp_atom chem_comp_bond database_2 pdbx_struct_conn_angle struct_conn struct_site repository Initial release Version format compliance Derived calculations Version format compliance Derived calculations Other Data collection Database references Derived calculations 1 0 1993-10-31 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 _database_2.pdbx_DOI _database_2.pdbx_database_accession _pdbx_struct_conn_angle.ptnr1_auth_comp_id _pdbx_struct_conn_angle.ptnr1_auth_seq_id _pdbx_struct_conn_angle.ptnr1_label_asym_id _pdbx_struct_conn_angle.ptnr1_label_atom_id _pdbx_struct_conn_angle.ptnr1_label_comp_id _pdbx_struct_conn_angle.ptnr1_label_seq_id _pdbx_struct_conn_angle.ptnr1_symmetry _pdbx_struct_conn_angle.ptnr3_auth_comp_id _pdbx_struct_conn_angle.ptnr3_auth_seq_id _pdbx_struct_conn_angle.ptnr3_label_asym_id _pdbx_struct_conn_angle.ptnr3_label_atom_id _pdbx_struct_conn_angle.ptnr3_label_comp_id _pdbx_struct_conn_angle.ptnr3_label_seq_id _pdbx_struct_conn_angle.ptnr3_symmetry _pdbx_struct_conn_angle.value _struct_conn.pdbx_dist_value _struct_conn.ptnr1_auth_comp_id _struct_conn.ptnr1_auth_seq_id _struct_conn.ptnr1_label_asym_id _struct_conn.ptnr1_label_atom_id _struct_conn.ptnr1_label_comp_id _struct_conn.ptnr1_label_seq_id _struct_conn.ptnr1_symmetry _struct_conn.ptnr2_auth_comp_id _struct_conn.ptnr2_auth_seq_id _struct_conn.ptnr2_label_asym_id _struct_conn.ptnr2_label_atom_id _struct_conn.ptnr2_label_comp_id _struct_conn.ptnr2_label_seq_id _struct_conn.ptnr2_symmetry _struct_site.pdbx_auth_asym_id _struct_site.pdbx_auth_comp_id _struct_site.pdbx_auth_seq_id HELIX RESIDUES 21-26 (NLPWPP) FORM LEFT-HANDED POLYPROLINE HELIX. RESIDUE 102 PARTICIPATES IN BOTH HELIX E AND HELIX EP. RESIDUES 108 AND 109 PARTICIPATE IN BOTH HELIX EP AND BETA STRAND E. SHEET RESIDUES 110 AND 111 FORM A BETA-BULGE IN STRAND E. RESIDUES 115 AND 116 FORM A BETA-BULGE IN STRAND E. TIGHT TURN 7 (RESIDUES 162-165) DISRUPT LAST STRAND OF SHEET INTO 2 STRANDS 8 AND 9. THIS STRAND IS CONTINUOUS IN E. COLI. A BETA BULGE IS PRESENT HERE IN L. CASEI. RESIDUES 172 AND 175 PARTICIPATE IN BOTH TIGHT-TURN 8 AND BETA STRANDS 7 AND 9. Y BNL 1992-03-14 REL CA CALCIUM ION TAP 7-THIONICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE HBI 7,8-DIHYDROBIOPTERIN HOH water CA 200 2 CA CA 200 A TAP 191 3 TAP TAP 191 A BIO 198 4 HBI HBI 198 A HOH 202 5 HOH HOH 202 A HOH 203 5 HOH HOH 203 A HOH 205 5 HOH HOH 205 A HOH 220 5 HOH HOH 220 A HOH 230 5 HOH HOH 230 A HOH 233 5 HOH HOH 233 A HOH 240 5 HOH HOH 240 A HOH 257 5 HOH HOH 257 A HOH 265 5 HOH HOH 265 A HOH 278 5 HOH HOH 278 A HOH 279 5 HOH HOH 279 A HOH 295 5 HOH HOH 295 A HOH 318 5 HOH HOH 318 A HOH 330 5 HOH HOH 330 A HOH 335 5 HOH HOH 335 A HOH 342 5 HOH HOH 342 A HOH 346 5 HOH HOH 346 A HOH 358 5 HOH HOH 358 A HOH 365 5 HOH HOH 365 A HOH 367 5 HOH HOH 367 A HOH 383 5 HOH HOH 383 A HOH 392 5 HOH HOH 392 A HOH 393 5 HOH HOH 393 A HOH 424 5 HOH HOH 424 A HOH 427 5 HOH HOH 427 A HOH 430 5 HOH HOH 430 A HOH 440 5 HOH HOH 440 A HOH 463 5 HOH HOH 463 A HOH 493 5 HOH HOH 493 A HOH 551 5 HOH HOH 551 A HOH 584 5 HOH HOH 584 A HOH 585 5 HOH HOH 585 A HOH 601 5 HOH HOH 601 A HOH 602 5 HOH HOH 602 A HOH 603 5 HOH HOH 603 A HOH 604 5 HOH HOH 604 A HOH 605 5 HOH HOH 605 A HOH 606 5 HOH HOH 606 A HOH 607 5 HOH HOH 607 A HOH 608 5 HOH HOH 608 A HOH 609 5 HOH HOH 609 A HOH 610 5 HOH HOH 610 A HOH 611 5 HOH HOH 611 A HOH 612 5 HOH HOH 612 A HOH 614 5 HOH HOH 614 A HOH 615 5 HOH HOH 615 A HOH 617 5 HOH HOH 617 A HOH 619 5 HOH HOH 619 A HOH 621 5 HOH HOH 621 A HOH 622 5 HOH HOH 622 A HOH 623 5 HOH HOH 623 A HOH 627 5 HOH HOH 627 A HOH 630 5 HOH HOH 630 A HOH 632 5 HOH HOH 632 A HOH 637 5 HOH HOH 637 A HOH 644 5 HOH HOH 644 A HOH 647 5 HOH HOH 647 A HOH 648 5 HOH HOH 648 A HOH 652 5 HOH HOH 652 A HOH 655 5 HOH HOH 655 A HOH 662 5 HOH HOH 662 A HOH 672 5 HOH HOH 672 A HOH 687 5 HOH HOH 687 A HOH 688 5 HOH HOH 688 A HOH 689 5 HOH HOH 689 A HOH 690 5 HOH HOH 690 A HOH 691 5 HOH HOH 691 A HOH 692 5 HOH HOH 692 A HOH 693 5 HOH HOH 693 A HOH 694 5 HOH HOH 694 A HOH 696 5 HOH HOH 696 A HOH 698 5 HOH HOH 698 A HOH 699 5 HOH HOH 699 A HOH 700 5 HOH HOH 700 A HOH 701 5 HOH HOH 701 A HOH 703 5 HOH HOH 703 A HOH 704 5 HOH HOH 704 A HOH 706 5 HOH HOH 706 A HOH 708 5 HOH HOH 708 A HOH 709 5 HOH HOH 709 A HOH 710 5 HOH HOH 710 A HOH 711 5 HOH HOH 711 A HOH 712 5 HOH HOH 712 A HOH 713 5 HOH HOH 713 A HOH 714 5 HOH HOH 714 A HOH 715 5 HOH HOH 715 A HOH 716 5 HOH HOH 716 A HOH 718 5 HOH HOH 718 A HOH 719 5 HOH HOH 719 A HOH 720 5 HOH HOH 720 A HOH 721 5 HOH HOH 721 A HOH 725 5 HOH HOH 725 A HOH 727 5 HOH HOH 727 A HOH 730 5 HOH HOH 730 A HOH 731 5 HOH HOH 731 A HOH 732 5 HOH HOH 732 A HOH 733 5 HOH HOH 733 A HOH 735 5 HOH HOH 735 A HOH 737 5 HOH HOH 737 A HOH 738 5 HOH HOH 738 A HOH 739 5 HOH HOH 739 A HOH 740 5 HOH HOH 740 A HOH 741 5 HOH HOH 741 A HOH 742 5 HOH HOH 742 A HOH 746 5 HOH HOH 746 A HOH 747 5 HOH HOH 747 A HOH 748 5 HOH HOH 748 A HOH 750 5 HOH HOH 750 A HOH 752 5 HOH HOH 752 A HOH 753 5 HOH HOH 753 A VAL 1 n 1 VAL 1 A ARG 2 n 2 ARG 2 A SER 3 n 3 SER 3 A LEU 4 n 4 LEU 4 A ASN 5 n 5 ASN 5 A SER 6 n 6 SER 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 CYS 11 n 11 CYS 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 ASP 19 n 19 ASP 19 A GLY 20 n 20 GLY 20 A ASN 21 n 21 ASN 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 TYR 31 n 31 TYR 31 A LYS 32 n 32 LYS 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 SER 39 n 39 SER 39 A THR 40 n 40 THR 40 A SER 41 n 41 SER 41 A HIS 42 n 42 HIS 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 ALA 49 n 49 ALA 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 ASP 69 n 69 ASP 69 A ARG 70 n 70 ARG 70 A ILE 71 n 71 ILE 71 A ASN 72 n 72 ASN 72 A ILE 73 n 73 ILE 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 ALA 82 n 82 ALA 82 A PRO 83 n 83 PRO 83 A LYS 84 n 84 LYS 84 A GLY 85 n 85 GLY 85 A ALA 86 n 86 ALA 86 A HIS 87 n 87 HIS 87 A TYR 88 n 88 TYR 88 A LEU 89 n 89 LEU 89 A SER 90 n 90 SER 90 A LYS 91 n 91 LYS 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 ALA 98 n 98 ALA 98 A LEU 99 n 99 LEU 99 A LEU 100 n 100 LEU 100 A ASP 101 n 101 ASP 101 A SER 102 n 102 SER 102 A PRO 103 n 103 PRO 103 A GLU 104 n 104 GLU 104 A LEU 105 n 105 LEU 105 A LYS 106 n 106 LYS 106 A SER 107 n 107 SER 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 THR 118 n 118 THR 118 A ALA 119 n 119 ALA 119 A VAL 120 n 120 VAL 120 A TYR 121 n 121 TYR 121 A LYS 122 n 122 LYS 122 A ALA 123 n 123 ALA 123 A ALA 124 n 124 ALA 124 A MET 125 n 125 MET 125 A GLU 126 n 126 GLU 126 A LYS 127 n 127 LYS 127 A PRO 128 n 128 PRO 128 A ILE 129 n 129 ILE 129 A ASN 130 n 130 ASN 130 A HIS 131 n 131 HIS 131 A ARG 132 n 132 ARG 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 LEU 139 n 139 LEU 139 A HIS 140 n 140 HIS 140 A GLU 141 n 141 GLU 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 TYR 153 n 153 TYR 153 A LYS 154 n 154 LYS 154 A ASP 155 n 155 ASP 155 A PHE 156 n 156 PHE 156 A LYS 157 n 157 LYS 157 A LEU 158 n 158 LEU 158 A LEU 159 n 159 LEU 159 A THR 160 n 160 THR 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 PRO 166 n 166 PRO 166 A ALA 167 n 167 ALA 167 A ASP 168 n 168 ASP 168 A ILE 169 n 169 ILE 169 A GLN 170 n 170 GLN 170 A GLU 171 n 171 GLU 171 A GLU 172 n 172 GLU 172 A ASP 173 n 173 ASP 173 A GLY 174 n 174 GLY 174 A ILE 175 n 175 ILE 175 A GLN 176 n 176 GLN 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 GLN 183 n 183 GLN 183 A LYS 184 n 184 LYS 184 A SER 185 n 185 SER 185 A VAL 186 n 186 VAL 186 A n 187 187 A n 188 188 A n 189 189 A author_defined_assembly 1 monomeric software_defined_assembly PISA 2 dimeric 4610 -49 18630 A GLU 78 A OE2 GLU 78 1_555 A CA 200 B CA CA 1_555 A GLU 78 A OE2 GLU 78 2_656 99.9 A GLU 78 A OE2 GLU 78 1_555 A CA 200 B CA CA 1_555 A TAP 191 C O3X TAP 1_555 94.6 A GLU 78 A OE2 GLU 78 2_656 A CA 200 B CA CA 1_555 A TAP 191 C O3X TAP 1_555 88.8 A GLU 78 A OE2 GLU 78 1_555 A CA 200 B CA CA 1_555 A TAP 191 C O3X TAP 2_656 86.9 A GLU 78 A OE2 GLU 78 2_656 A CA 200 B CA CA 1_555 A TAP 191 C O3X TAP 2_656 88.3 A TAP 191 C O3X TAP 1_555 A CA 200 B CA CA 1_555 A TAP 191 C O3X TAP 2_656 177.0 A GLU 78 A OE2 GLU 78 1_555 A CA 200 B CA CA 1_555 A HOH 278 E O HOH 1_555 90.9 A GLU 78 A OE2 GLU 78 2_656 A CA 200 B CA CA 1_555 A HOH 278 E O HOH 1_555 167.7 A TAP 191 C O3X TAP 1_555 A CA 200 B CA CA 1_555 A HOH 278 E O HOH 1_555 84.3 A TAP 191 C O3X TAP 2_656 A CA 200 B CA CA 1_555 A HOH 278 E O HOH 1_555 98.3 A GLU 78 A OE2 GLU 78 1_555 A CA 200 B CA CA 1_555 A HOH 278 E O HOH 2_656 164.4 A GLU 78 A OE2 GLU 78 2_656 A CA 200 B CA CA 1_555 A HOH 278 E O HOH 2_656 86.0 A TAP 191 C O3X TAP 1_555 A CA 200 B CA CA 1_555 A HOH 278 E O HOH 2_656 99.9 A TAP 191 C O3X TAP 2_656 A CA 200 B CA CA 1_555 A HOH 278 E O HOH 2_656 78.8 A HOH 278 E O HOH 1_555 A CA 200 B CA CA 1_555 A HOH 278 E O HOH 2_656 85.1 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 -1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 0.0000000000 0.0000000000 0.0000000000 -1.0000000000 2_656 -x+1,y,-z+1 crystal symmetry operation 52.5430675476 0.0000000000 52.7424137027 A O TYR 88 A O TYR 88 A N VAL 74 A N VAL 74 A N ILE 73 A N ILE 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 SER 6 A O SER 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 GLN 183 A N GLN 183 A O LYS 157 A O LYS 157 A O TYR 88 A O TYR 88 A N VAL 74 A N VAL 74 A N ILE 73 A N ILE 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 SER 6 A O SER 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 1 A CA 200 B CA 1 A CG ARG 2 A CG ARG 2 1 Y 1 A CD ARG 2 A CD ARG 2 1 Y 1 A NE ARG 2 A NE ARG 2 1 Y 1 A CZ ARG 2 A CZ ARG 2 1 Y 1 A NH1 ARG 2 A NH1 ARG 2 1 Y 1 A NH2 ARG 2 A NH2 ARG 2 1 Y 1 A CE LYS 80 A CE LYS 80 1 Y 1 A NZ LYS 80 A NZ LYS 80 1 Y 1 A CB GLU 104 A CB GLU 104 1 Y 1 A CG GLU 104 A CG GLU 104 1 Y 1 A CD GLU 104 A CD GLU 104 1 Y 1 A OE1 GLU 104 A OE1 GLU 104 1 Y 1 A OE2 GLU 104 A OE2 GLU 104 1 Y 1 A CE LYS 178 A CE LYS 178 1 Y 1 A NZ LYS 178 A NZ LYS 178 1 Y 1 A LEU 187 A LEU 187 1 Y 1 A ALA 188 A ALA 188 1 Y 1 A GLN 189 A GLN 189 1 Y 1 A A O O PRO HOH 163 632 2.04 1 16.76 2.20 113.40 130.16 A A A CA CB CG GLU GLU GLU 44 44 44 N 1 -4.04 0.50 120.30 116.26 A A A NE CZ NH2 ARG ARG ARG 65 65 65 N 1 12.71 1.90 110.20 122.91 A A A CB CA C LEU LEU LEU 97 97 97 N 1 7.11 0.90 118.30 125.41 A A A CB CG OD1 ASP ASP ASP 168 168 168 N 1 A SER 102 -45.89 151.22 1 A ASP 110 -95.83 -88.27 1 A LEU 139 -79.16 48.73 0.14 2.3 1 2.3 110 1665 66 0 1489 0.016 0.80 refinement PROLSQ 2.3 ANGSTROMS CRYSTAL STRUCTURE OF CHICKEN LIVER DIHYDROFOLATE REDUCTASE COMPLEXED WITH THIONADP+ AND BIOPTERIN 1 N N 2 N N 3 N N 4 N N 5 N N A LEU 27 A LEU 27 HELX_P A THR 40 A THR 40 1 B 14 A GLY 53 A GLY 53 HELX_P A SER 59 A SER 59 1 C 7 A SER 92 A SER 92 HELX_P A SER 102 A SER 102 1 E 11 A SER 102 A SER 102 HELX_P NOT PRESENT IN BACTERIAL A VAL 109 A VAL 109 1 EP 8 A GLY 117 A GLY 117 HELX_P A LYS 127 A LYS 127 1 F 11 metalc 2.000 A GLU 78 A OE2 GLU 78 1_555 A CA 200 B CA CA 1_555 metalc 2.085 A GLU 78 A OE2 GLU 78 2_656 A CA 200 B CA CA 1_555 metalc 2.256 A TAP 191 C O3X TAP 1_555 A CA 200 B CA CA 1_555 metalc 2.402 A TAP 191 C O3X TAP 2_656 A CA 200 B CA CA 1_555 metalc 2.105 A CA 200 B CA CA 1_555 A HOH 278 E O HOH 1_555 metalc 2.204 A CA 200 B CA CA 1_555 A HOH 278 E O HOH 2_656 OXIDOREDUCTASE OXIDOREDUCTASE A ARG 65 A ARG 65 1 A PRO 66 A PRO 66 -6.81 A GLY 116 A GLY 116 1 A GLY 117 A GLY 117 5.85 DYR_CHICK UNP 1 1 P00378 VRSLNSIVAVCQNMGIGKDGNLPWPPLRNEYKYFQRMTSTSHVEGKQNAVIMGKKTWFSIPEKNRPLKDRINIVLSRELK EAPKGAHYLSKSLDDALALLDSPELKSKVDMVWIVGGTAVYKAAMEKPINHRLFVTRILHEFESDTFFPEIDYKDFKLLT EYPGVPADIQEEDGIQYKFEVYQKSVLAQ 1 189 1DR3 1 189 P00378 A 1 1 189 8 8 parallel parallel parallel parallel parallel anti-parallel anti-parallel parallel parallel parallel parallel parallel anti-parallel anti-parallel A TYR 88 A TYR 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 ASN 130 A ASN 130 A LEU 139 A LEU 139 A ILE 175 A ILE 175 A SER 185 A SER 185 A LYS 157 A LYS 157 A LEU 159 A LEU 159 A TYR 88 A TYR 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 ASN 130 A ASN 130 A LEU 139 A LEU 139 A ILE 175 A ILE 175 A SER 185 A SER 185 A ASP 168 A ASP 168 A GLU 172 A GLU 172 BINDING SITE FOR RESIDUE CA A 200 A CA 200 Software 6 BINDING SITE FOR RESIDUE TAP A 191 A TAP 191 Software 34 BINDING SITE FOR RESIDUE HBI A 198 A HBI 198 Software 7 A GLU 78 A GLU 78 6 2_656 A GLU 78 A GLU 78 6 1_555 A TAP 191 C TAP 6 2_656 A TAP 191 C TAP 6 1_555 A HOH 278 E HOH 6 2_656 A HOH 278 E HOH 6 1_555 A ALA 9 A ALA 9 34 1_555 A ILE 16 A ILE 16 34 1_555 A GLY 17 A GLY 17 34 1_555 A GLY 20 A GLY 20 34 1_555 A ASN 21 A ASN 21 34 1_555 A LEU 22 A LEU 22 34 1_555 A GLY 53 A GLY 53 34 1_555 A LYS 54 A LYS 54 34 1_555 A LYS 55 A LYS 55 34 1_555 A THR 56 A THR 56 34 1_555 A LEU 75 A LEU 75 34 1_555 A SER 76 A SER 76 34 1_555 A ARG 77 A ARG 77 34 1_555 A GLU 78 A GLU 78 34 1_555 A GLU 78 A GLU 78 34 2_656 A LYS 91 A LYS 91 34 1_555 A SER 92 A SER 92 34 1_555 A VAL 115 A VAL 115 34 1_555 A GLY 117 A GLY 117 34 1_555 A THR 118 A THR 118 34 1_555 A ALA 119 A ALA 119 34 1_555 A VAL 120 A VAL 120 34 1_555 A TYR 121 A TYR 121 34 1_555 A THR 146 A THR 146 34 1_555 A HBI 198 D HBI 34 1_555 A CA 200 B CA 34 2_656 A CA 200 B CA 34 1_555 A HOH 220 E HOH 34 1_555 A HOH 278 E HOH 34 1_555 A HOH 318 E HOH 34 1_555 A HOH 392 E HOH 34 1_555 A HOH 393 E HOH 34 1_555 A HOH 493 E HOH 34 1_555 A HOH 648 E HOH 34 1_555 A ILE 7 A ILE 7 7 1_555 A LEU 22 A LEU 22 7 1_555 A GLU 30 A GLU 30 7 1_555 A PHE 34 A PHE 34 7 1_555 A VAL 115 A VAL 115 7 1_555 A TAP 191 C TAP 7 1_555 A HOH 648 E HOH 7 1_555 5 C 1 2 1