0.011705
0.006758
0.000000
0.000000
0.013516
0.000000
0.000000
0.000000
0.012762
0.00000
0.00000
0.00000
Cody, V.
Luft, J.R.
Pangborn, W.
Gangjee, A.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
9
90.00
90.00
120.00
85.431
85.431
78.357
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
C19 H24 N6 O3
384.432
2,4-DIAMINO-5-METHYL-6-[(3,4,5-TRIMETHOXY-N-METHYLANILINO)METHYL]PYRIDO[2,3-D]PYRIMIDINE
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
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
Y
75
N
C
Y
76
N
N
Y
77
N
C
N
78
N
N
Y
79
N
C
Y
80
N
C
Y
81
N
C
Y
82
N
C
Y
83
N
N
Y
84
N
C
Y
85
N
N
N
86
N
C
N
87
R
N
Y
88
N
C
Y
89
N
C
Y
90
N
C
N
91
N
O
N
92
N
C
Y
93
N
C
N
94
N
O
N
95
N
C
Y
96
N
C
N
97
N
O
N
98
N
C
Y
99
N
C
N
100
N
C
N
101
N
C
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
H
N
110
N
H
N
111
N
H
N
112
N
H
N
113
N
H
N
114
N
H
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
N
N
127
R
C
N
128
N
C
N
129
N
O
N
130
N
C
N
131
N
S
N
132
N
O
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
H
N
140
N
N
N
141
S
C
N
142
N
C
N
143
N
O
N
144
N
C
N
145
N
C
N
146
N
C
N
147
N
O
N
148
N
N
N
149
N
O
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
H
N
160
N
N
N
161
S
C
N
162
N
C
N
163
N
O
N
164
N
C
N
165
N
C
N
166
N
C
N
167
N
O
N
168
N
O
N
169
N
O
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
H
N
179
N
N
N
180
N
C
N
181
N
C
N
182
N
O
N
183
N
O
N
184
N
H
N
185
N
H
N
186
N
H
N
187
N
H
N
188
N
H
N
189
N
N
N
190
S
C
N
191
N
C
N
192
N
O
N
193
N
C
Y
194
N
C
Y
195
N
N
Y
196
N
C
Y
197
N
C
Y
198
N
N
N
199
N
O
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
H
N
210
N
O
N
211
N
H
N
212
N
H
N
213
N
N
N
214
S
C
N
215
N
C
N
216
N
O
N
217
S
C
N
218
N
C
N
219
N
C
N
220
N
C
N
221
N
O
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
H
N
235
N
N
N
236
S
C
N
237
N
C
N
238
N
O
N
239
N
C
N
240
N
C
N
241
N
C
N
242
N
C
N
243
N
O
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
H
N
257
N
N
N
258
S
C
N
259
N
C
N
260
N
O
N
261
N
C
N
262
N
C
N
263
N
C
N
264
N
C
N
265
N
N
N
266
N
O
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
H
N
282
N
N
N
283
S
C
N
284
N
C
N
285
N
O
N
286
N
C
N
287
N
C
N
288
N
S
N
289
N
C
N
290
N
O
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
H
N
302
N
N
N
303
S
C
N
304
N
C
N
305
N
O
N
306
N
C
Y
307
N
C
Y
308
N
C
Y
309
N
C
Y
310
N
C
Y
311
N
C
Y
312
N
C
N
313
N
O
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
H
N
325
N
N
N
326
S
C
N
327
N
C
N
328
N
O
N
329
N
C
N
330
N
C
N
331
N
C
N
332
N
O
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
H
N
342
N
N
N
343
S
C
N
344
N
C
N
345
N
O
N
346
N
C
N
347
N
O
N
348
N
O
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
H
N
356
N
S
N
357
N
O
N
358
N
O
N
359
N
O
N
360
N
O
N
361
N
N
N
362
S
C
N
363
N
C
N
364
N
O
N
365
R
C
N
366
N
O
N
367
N
C
N
368
N
O
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
H
N
376
N
H
N
377
N
H
N
378
N
N
N
379
S
C
N
380
N
C
N
381
N
O
N
382
N
C
Y
383
N
C
Y
384
N
C
Y
385
N
C
Y
386
N
N
Y
387
N
C
Y
388
N
C
Y
389
N
C
Y
390
N
C
Y
391
N
C
N
392
N
O
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
N
N
406
S
C
N
407
N
C
N
408
N
O
N
409
N
C
Y
410
N
C
Y
411
N
C
Y
412
N
C
Y
413
N
C
Y
414
N
C
Y
415
N
C
N
416
N
O
N
417
N
O
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
H
N
427
N
H
N
428
N
H
N
429
N
N
N
430
S
C
N
431
N
C
N
432
N
O
N
433
N
C
N
434
N
C
N
435
N
C
N
436
N
O
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
445
N
H
N
446
N
H
N
447
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
Y
73
N
doub
Y
74
N
sing
Y
75
N
sing
N
76
N
sing
Y
77
N
doub
N
78
N
sing
N
79
N
sing
Y
80
N
sing
Y
81
N
sing
Y
82
N
doub
N
83
N
sing
Y
84
N
sing
N
85
N
sing
Y
86
N
doub
N
87
N
sing
Y
88
N
sing
Y
89
N
doub
N
90
N
sing
N
91
N
sing
N
92
N
sing
N
93
N
sing
N
94
N
sing
Y
95
N
doub
Y
96
N
sing
Y
97
N
sing
N
98
N
sing
N
99
N
sing
Y
100
N
doub
N
101
N
sing
N
102
N
sing
N
103
N
sing
N
104
N
sing
N
105
N
sing
Y
106
N
sing
N
107
N
sing
N
108
N
sing
N
109
N
sing
N
110
N
sing
N
111
N
sing
Y
112
N
doub
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
doub
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
sing
N
141
N
sing
N
142
N
sing
N
143
N
doub
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
sing
N
151
N
doub
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
doub
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
sing
N
170
N
doub
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
sing
N
180
N
doub
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
Y
194
N
sing
Y
195
N
doub
Y
196
N
doub
N
197
N
sing
Y
198
N
sing
N
199
N
sing
Y
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
sing
N
212
N
doub
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
sing
N
233
N
doub
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
doub
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
sing
N
278
N
doub
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
sing
N
297
N
doub
N
298
N
sing
N
299
N
sing
N
300
N
sing
N
301
N
sing
Y
302
N
doub
Y
303
N
sing
Y
304
N
sing
N
305
N
sing
Y
306
N
doub
N
307
N
sing
Y
308
N
doub
N
309
N
sing
Y
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
sing
N
320
N
doub
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
sing
N
337
N
doub
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
doub
N
345
N
doub
N
346
N
sing
N
347
N
sing
N
348
N
sing
N
349
N
sing
N
350
N
sing
N
351
N
sing
N
352
N
sing
N
353
N
sing
N
354
N
doub
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
sing
N
368
N
sing
N
369
N
sing
N
370
N
doub
N
371
N
sing
N
372
N
sing
N
373
N
sing
N
374
N
sing
Y
375
N
doub
Y
376
N
sing
Y
377
N
sing
N
378
N
sing
Y
379
N
doub
Y
380
N
sing
Y
381
N
sing
N
382
N
sing
Y
383
N
sing
Y
384
N
doub
N
385
N
sing
Y
386
N
doub
N
387
N
sing
Y
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
sing
N
396
N
sing
N
397
N
sing
N
398
N
doub
N
399
N
sing
N
400
N
sing
N
401
N
sing
N
402
N
sing
Y
403
N
doub
Y
404
N
sing
Y
405
N
sing
N
406
N
sing
Y
407
N
doub
N
408
N
sing
Y
409
N
doub
N
410
N
sing
Y
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
doub
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
N
431
N
sing
N
432
N
sing
N
433
N
sing
DK
Acta Crystallogr.,Sect.D
ABCRE6
0766
0907-4449
59
1603
1609
10.1107/S0907444903014963
12925791
Analysis of three crystal structure determinations of a 5-methyl-6-N-methylanilino pyridopyrimidine antifolate complex with human dihydrofolate reductase.
2003
10.2210/pdb1pd9/pdb
pdb_00001pd9
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
1997-04-10
RIGAKU RAXIS IIC
graphite
SINGLE WAVELENGTH
M
x-ray
1
1.5418
1.0
1.5418
ROTATING ANODE
RIGAKU
21349.525
Dihydrofolate reductase
1.5.1.3
1
man
polymer
96.063
SULFATE ION
2
syn
non-polymer
384.432
2,4-DIAMINO-5-METHYL-6-[(3,4,5-TRIMETHOXY-N-METHYLANILINO)METHYL]PYRIDO[2,3-D]PYRIMIDINE
1
syn
non-polymer
18.015
water
69
nat
water
no
no
VGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSRELK
EPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLLP
EYPGVLSDVQEEKGIKYKFEVYEKND
VGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSRELK
EPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLLP
EYPGVLSDVQEEKGIKYKFEVYEKND
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
human
Homo
Escherichia
sample
DHFR
9606
Homo sapiens
562
Escherichia coli
1
2.58
52.25
VAPOR DIFFUSION, HANGING DROP
8.0
Ammonium sulfate, 0.1 M phosphate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
298
chem_comp_atom
chem_comp_bond
database_2
pdbx_initial_refinement_model
struct_site
repository
Initial release
Version format compliance
Version format compliance
Data collection
Database references
Derived calculations
Refinement description
1
0
2003-12-09
1
1
2008-04-29
1
2
2011-07-13
1
3
2023-08-16
_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
RCSB
Y
RCSB
2003-05-19
REL
REL
SO4
SULFATE ION
CO4
2,4-DIAMINO-5-METHYL-6-[(3,4,5-TRIMETHOXY-N-METHYLANILINO)METHYL]PYRIDO[2,3-D]PYRIMIDINE
HOH
water
1HFP
PDB ENTRY 1HFP
PDB
experimental model
SUL
188
2
SO4
SO4
188
A
SUL
189
2
SO4
SO4
189
A
COE
187
3
CO4
CO4
187
A
WAT
190
4
HOH
HOH
190
A
WAT
191
4
HOH
HOH
191
A
WAT
192
4
HOH
HOH
192
A
WAT
193
4
HOH
HOH
193
A
WAT
194
4
HOH
HOH
194
A
WAT
195
4
HOH
HOH
195
A
WAT
196
4
HOH
HOH
196
A
WAT
197
4
HOH
HOH
197
A
WAT
198
4
HOH
HOH
198
A
WAT
199
4
HOH
HOH
199
A
WAT
200
4
HOH
HOH
200
A
WAT
201
4
HOH
HOH
201
A
WAT
202
4
HOH
HOH
202
A
WAT
203
4
HOH
HOH
203
A
WAT
204
4
HOH
HOH
204
A
WAT
205
4
HOH
HOH
205
A
WAT
206
4
HOH
HOH
206
A
WAT
207
4
HOH
HOH
207
A
WAT
208
4
HOH
HOH
208
A
WAT
209
4
HOH
HOH
209
A
WAT
210
4
HOH
HOH
210
A
WAT
211
4
HOH
HOH
211
A
WAT
212
4
HOH
HOH
212
A
WAT
213
4
HOH
HOH
213
A
WAT
214
4
HOH
HOH
214
A
WAT
215
4
HOH
HOH
215
A
WAT
216
4
HOH
HOH
216
A
WAT
217
4
HOH
HOH
217
A
WAT
218
4
HOH
HOH
218
A
WAT
219
4
HOH
HOH
219
A
WAT
220
4
HOH
HOH
220
A
WAT
221
4
HOH
HOH
221
A
WAT
222
4
HOH
HOH
222
A
WAT
223
4
HOH
HOH
223
A
WAT
224
4
HOH
HOH
224
A
WAT
225
4
HOH
HOH
225
A
WAT
226
4
HOH
HOH
226
A
WAT
227
4
HOH
HOH
227
A
WAT
228
4
HOH
HOH
228
A
WAT
229
4
HOH
HOH
229
A
WAT
230
4
HOH
HOH
230
A
WAT
231
4
HOH
HOH
231
A
WAT
232
4
HOH
HOH
232
A
WAT
233
4
HOH
HOH
233
A
WAT
234
4
HOH
HOH
234
A
WAT
235
4
HOH
HOH
235
A
WAT
236
4
HOH
HOH
236
A
WAT
237
4
HOH
HOH
237
A
WAT
238
4
HOH
HOH
238
A
WAT
239
4
HOH
HOH
239
A
WAT
240
4
HOH
HOH
240
A
WAT
241
4
HOH
HOH
241
A
WAT
242
4
HOH
HOH
242
A
WAT
243
4
HOH
HOH
243
A
WAT
244
4
HOH
HOH
244
A
WAT
245
4
HOH
HOH
245
A
WAT
246
4
HOH
HOH
246
A
WAT
247
4
HOH
HOH
247
A
WAT
248
4
HOH
HOH
248
A
WAT
249
4
HOH
HOH
249
A
WAT
250
4
HOH
HOH
250
A
WAT
251
4
HOH
HOH
251
A
WAT
252
4
HOH
HOH
252
A
WAT
253
4
HOH
HOH
253
A
WAT
254
4
HOH
HOH
254
A
WAT
255
4
HOH
HOH
255
A
WAT
256
4
HOH
HOH
256
A
WAT
257
4
HOH
HOH
257
A
WAT
258
4
HOH
HOH
258
A
VAL
1
n
1
VAL
1
A
GLY
2
n
2
GLY
2
A
SER
3
n
3
SER
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
ASP
186
n
186
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
PHE
88
A
O
PHE
88
A
N
VAL
74
A
N
VAL
74
A
O
ILE
71
A
O
ILE
71
A
N
VAL
50
A
N
VAL
50
A
N
LEU
49
A
N
LEU
49
A
O
TRP
113
A
O
TRP
113
A
O
VAL
112
A
O
VAL
112
A
N
ASN
5
A
N
ASN
5
A
N
VAL
10
A
N
VAL
10
A
O
ILE
138
A
O
ILE
138
A
N
LEU
131
A
N
LEU
131
A
O
LYS
184
A
O
LYS
184
A
O
GLU
183
A
O
GLU
183
A
N
LYS
157
A
N
LYS
157
A
O
PHE
88
A
O
PHE
88
A
N
VAL
74
A
N
VAL
74
A
O
ILE
71
A
O
ILE
71
A
N
VAL
50
A
N
VAL
50
A
N
LEU
49
A
N
LEU
49
A
O
TRP
113
A
O
TRP
113
A
O
VAL
112
A
O
VAL
112
A
N
ASN
5
A
N
ASN
5
A
N
VAL
10
A
N
VAL
10
A
O
ILE
138
A
O
ILE
138
A
N
LEU
131
A
N
LEU
131
A
O
LYS
184
A
O
LYS
184
A
O
TYR
177
A
O
TYR
177
A
N
GLN
170
A
N
GLN
170
A
N
GLY
17
A
N
GLY
17
A
O
THR
146
A
O
THR
146
1
A
N9'
CO4
187
PLANAR
1
A
A
O
O
HOH
HOH
240
257
1.70
1
A
A
O
O
HOH
HOH
249
256
1.70
1
A
A
O
O
ASN
HOH
19
257
1.80
1
A
A
OG
O
SER
HOH
119
251
2.04
1
A
A
OE1
O
GLU
HOH
78
256
2.09
1
A
A
ND1
O
HIS
LYS
130
184
2.11
1
A
A
O
NH1
LEU
ARG
79
91
2.12
1
A
A
O
O
LEU
HOH
75
244
2.14
1
A
A
OG
OD1
SER
ASP
42
110
2.18
1
-7.84
1.10
119.40
111.56
A
A
A
NH1
CZ
NH2
ARG
ARG
ARG
28
28
28
N
1
9.65
0.50
120.30
129.95
A
A
A
NE
CZ
NH2
ARG
ARG
ARG
28
28
28
N
1
-5.94
0.60
121.00
115.06
A
A
A
CB
CG
CD2
TYR
TYR
TYR
33
33
33
N
1
6.85
0.60
121.00
127.85
A
A
A
CB
CG
CD1
TYR
TYR
TYR
33
33
33
N
1
-10.24
1.60
110.90
100.66
A
A
A
CG1
CB
CG2
VAL
VAL
VAL
50
50
50
N
1
3.36
0.50
120.30
123.66
A
A
A
NE
CZ
NH1
ARG
ARG
ARG
65
65
65
N
1
9.52
1.40
123.60
133.12
A
A
A
CD
NE
CZ
ARG
ARG
ARG
70
70
70
N
1
7.75
1.10
119.40
127.15
A
A
A
NH1
CZ
NH2
ARG
ARG
ARG
70
70
70
N
1
-6.30
0.50
120.30
114.00
A
A
A
NE
CZ
NH2
ARG
ARG
ARG
70
70
70
N
1
16.51
2.20
113.40
129.91
A
A
A
CA
CB
CG
ARG
ARG
ARG
77
77
77
N
1
3.23
0.50
120.30
123.53
A
A
A
NE
CZ
NH1
ARG
ARG
ARG
77
77
77
N
1
13.27
2.20
113.40
126.67
A
A
A
CA
CB
CG
LYS
LYS
LYS
80
80
80
N
1
12.54
2.00
118.30
130.84
A
A
A
CG
CD
OE1
GLU
GLU
GLU
81
81
81
N
1
6.74
1.00
109.00
115.74
A
A
A
CG
ND1
CE1
HIS
HIS
HIS
87
87
87
N
1
-7.06
1.10
108.50
101.44
A
A
A
ND1
CE1
NE2
HIS
HIS
HIS
87
87
87
N
1
4.94
0.70
109.00
113.94
A
A
A
CE1
NE2
CD2
HIS
HIS
HIS
87
87
87
N
1
11.22
1.60
122.70
133.92
A
A
A
O
C
N
PHE
PHE
LEU
88
88
89
Y
1
32.06
1.40
123.60
155.66
A
A
A
CD
NE
CZ
ARG
ARG
ARG
91
91
91
N
1
8.14
0.90
118.30
126.44
A
A
A
CB
CG
OD2
ASP
ASP
ASP
95
95
95
N
1
21.69
2.30
115.30
136.99
A
A
A
CA
CB
CG
LEU
LEU
LEU
99
99
99
N
1
-13.98
2.00
110.40
96.42
A
A
A
CB
CA
C
GLU
GLU
GLU
101
101
101
N
1
8.08
1.20
123.30
131.38
A
A
A
OE1
CD
OE2
GLU
GLU
GLU
101
101
101
N
1
10.39
0.90
118.30
128.69
A
A
A
CB
CG
OD1
ASP
ASP
ASP
110
110
110
N
1
12.51
1.60
110.90
123.41
A
A
A
CG1
CB
CG2
VAL
VAL
VAL
112
112
112
N
1
9.24
1.50
110.90
120.14
A
A
A
CA
CB
CG2
VAL
VAL
VAL
115
115
115
N
1
23.80
2.70
114.20
138.00
A
A
A
CB
CG
CD
GLU
GLU
GLU
123
123
123
N
1
15.98
2.50
121.70
137.68
A
A
A
C
N
CA
ALA
MET
MET
124
125
125
Y
1
-15.48
2.30
111.70
96.22
A
A
A
CD
CE
NZ
LYS
LYS
LYS
132
132
132
N
1
13.99
1.90
110.30
124.29
A
A
A
N
CA
CB
THR
THR
THR
136
136
136
N
1
4.39
0.50
120.30
124.69
A
A
A
NE
CZ
NH2
ARG
ARG
ARG
137
137
137
N
1
12.64
1.70
113.30
125.94
A
A
A
CA
CB
CG
MET
MET
MET
139
139
139
N
1
13.95
1.80
110.60
124.55
A
A
A
N
CA
CB
GLN
GLN
GLN
140
140
140
N
1
7.72
0.90
118.30
126.02
A
A
A
CB
CG
OD1
ASP
ASP
ASP
145
145
145
N
1
-6.27
0.60
121.00
114.73
A
A
A
CB
CG
CD1
TYR
TYR
TYR
162
162
162
N
1
5.32
0.60
121.00
126.32
A
A
A
CB
CG
CD2
TYR
TYR
TYR
177
177
177
N
1
A
A
O
O
HOH
HOH
238
255
1.56
1_555
6_555
1
A
GLU
104
-52.56
-79.11
1
A
ASP
110
-94.25
-91.68
1
A
ASN
185
-171.61
92.01
23.87
0.213
0.179
0.213
2.2
8.0
10667
10667
8857
90.8
1
isotropic
2.0
1.0
MOLECULAR REPLACEMENT
PDB ENTRY 1HFP
2.2
8.0
69
1609
38
0
1502
0.025
0.053
0.058
0.014
23.8
2.2
8.0
1PD9
10667
8857
2.0
1.0
0.025
1
90.8
2.2
2.3
62.9
data reduction
DENZO
data scaling
SCALEPACK
model building
PROTEIN
refinement
PROLSQ
phasing
PROTEIN
Analysis of Three Crystal Structure Determinations of a 5-Methyl-6-N-Methylanilino Pyridopyrimidine antifolate 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
27
HELX_P
A
THR
40
A
THR
40
1
1
14
A
LYS
54
A
LYS
54
HELX_P
A
PHE
58
A
PHE
58
1
2
5
A
SER
59
A
SER
59
HELX_P
A
ILE
60
A
ILE
60
5
3
2
A
PRO
61
A
PRO
61
HELX_P
A
ARG
65
A
ARG
65
5
4
5
A
SER
92
A
SER
92
HELX_P
A
LEU
99
A
LEU
99
1
5
8
A
GLN
102
A
GLN
102
HELX_P
A
ASN
107
A
ASN
107
1
6
6
A
GLY
117
A
GLY
117
HELX_P
A
MET
125
A
MET
125
1
7
9
OXIDOREDUCTASE
human dihydrofolate reductase inhibitor complexes, OXIDOREDUCTASE
A
ARG
65
A
ARG
65
1
A
PRO
66
A
PRO
66
-1.39
A
GLY
116
A
GLY
116
1
A
GLY
117
A
GLY
117
1.96
DYR_HUMAN
UNP
1
1
P00374
VGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSRELK
EPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLLP
EYPGVLSDVQEEKGIKYKFEVYEKND
1
186
1PD9
1
186
P00374
A
1
1
186
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
88
A
SER
90
A
SER
90
A
ARG
70
A
ARG
70
A
LEU
75
A
LEU
75
A
GLN
47
A
GLN
47
A
GLY
53
A
GLY
53
A
VAL
109
A
VAL
109
A
ILE
114
A
ILE
114
A
LEU
4
A
LEU
4
A
VAL
10
A
VAL
10
A
HIS
130
A
HIS
130
A
ILE
138
A
ILE
138
A
ILE
175
A
ILE
175
A
ASN
185
A
ASN
185
A
LYS
157
A
LYS
157
A
LEU
158
A
LEU
158
A
PHE
88
A
PHE
88
A
SER
90
A
SER
90
A
ARG
70
A
ARG
70
A
LEU
75
A
LEU
75
A
GLN
47
A
GLN
47
A
GLY
53
A
GLY
53
A
VAL
109
A
VAL
109
A
ILE
114
A
ILE
114
A
LEU
4
A
LEU
4
A
VAL
10
A
VAL
10
A
HIS
130
A
HIS
130
A
ILE
138
A
ILE
138
A
ILE
175
A
ILE
175
A
ASN
185
A
ASN
185
A
GLN
170
A
GLN
170
A
GLU
172
A
GLU
172
A
GLY
15
A
GLY
15
A
GLY
17
A
GLY
17
A
THR
146
A
THR
146
A
PHE
147
A
PHE
147
BINDING SITE FOR RESIDUE SO4 A 188
A
SO4
188
Software
7
BINDING SITE FOR RESIDUE SO4 A 189
A
SO4
189
Software
4
BINDING SITE FOR RESIDUE CO4 A 187
A
CO4
187
Software
10
A
GLY
53
A
GLY
53
7
1_555
A
LYS
54
A
LYS
54
7
1_555
A
LYS
55
A
LYS
55
7
1_555
A
THR
56
A
THR
56
7
1_555
A
GLY
117
A
GLY
117
7
1_555
A
VAL
120
A
VAL
120
7
1_555
A
HOH
251
E
HOH
7
1_555
A
LYS
54
A
LYS
54
4
1_555
A
SER
76
A
SER
76
4
1_555
A
ARG
77
A
ARG
77
4
1_555
A
GLU
78
A
GLU
78
4
1_555
A
ILE
7
A
ILE
7
10
1_555
A
VAL
8
A
VAL
8
10
1_555
A
LEU
22
A
LEU
22
10
1_555
A
GLU
30
A
GLU
30
10
1_555
A
PHE
31
A
PHE
31
10
1_555
A
PHE
34
A
PHE
34
10
1_555
A
PRO
61
A
PRO
61
10
1_555
A
ASN
64
A
ASN
64
10
1_555
A
VAL
115
A
VAL
115
10
1_555
A
TYR
121
A
TYR
121
10
1_555
146
H 3