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