0.027701
0.010633
0.001805
0.000000
0.027678
0.002550
0.000000
0.000000
0.013065
0.00000
0.00000
0.00000
RESIDUES PRO A 66 AND PRO B 66 ARE CIS PROLINES.
IN EACH CHAIN, THE PEPTIDE BOND LINKING GLY 116 TO GLY 117 IS IN THE CIS CONFORMATION.
Davies /II, J.F.
Kraut, J.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
2
94.30
91.70
111.00
36.100
38.700
76.900
C3 H7 N O2
89.093
y
ALANINE
L-peptide linking
C6 H15 N4 O2 1
175.209
y
ARGININE
L-peptide linking
C4 H8 N2 O3
132.118
y
ASPARAGINE
L-peptide linking
C4 H7 N O4
133.103
y
ASPARTIC ACID
L-peptide linking
C3 H7 N O2 S
121.158
y
CYSTEINE
L-peptide linking
C19 H19 N7 O6
441.397
FOLIC ACID
non-polymer
C5 H10 N2 O3
146.144
y
GLUTAMINE
L-peptide linking
C5 H9 N O4
147.129
y
GLUTAMIC ACID
L-peptide linking
C2 H5 N O2
75.067
y
GLYCINE
peptide linking
C6 H10 N3 O2 1
156.162
y
HISTIDINE
L-peptide linking
H2 O
18.015
WATER
non-polymer
C6 H13 N O2
131.173
y
ISOLEUCINE
L-peptide linking
C6 H13 N O2
131.173
y
LEUCINE
L-peptide linking
C6 H15 N2 O2 1
147.195
y
LYSINE
L-peptide linking
C5 H11 N O2 S
149.211
y
METHIONINE
L-peptide linking
C9 H11 N O2
165.189
y
PHENYLALANINE
L-peptide linking
C5 H9 N O2
115.130
y
PROLINE
L-peptide linking
C3 H7 N O3
105.093
y
SERINE
L-peptide linking
C4 H9 N O3
119.119
y
THREONINE
L-peptide linking
C11 H12 N2 O2
204.225
y
TRYPTOPHAN
L-peptide linking
C9 H11 N O3
181.189
y
TYROSINE
L-peptide linking
C5 H11 N O2
117.146
y
VALINE
L-peptide linking
N
1
N
N
N
2
S
C
N
3
N
C
N
4
N
O
N
5
N
C
N
6
N
O
N
7
N
H
N
8
N
H
N
9
N
H
N
10
N
H
N
11
N
H
N
12
N
H
N
13
N
H
N
14
N
N
N
15
S
C
N
16
N
C
N
17
N
O
N
18
N
C
N
19
N
C
N
20
N
C
N
21
N
N
N
22
N
C
N
23
N
N
N
24
N
N
N
25
N
O
N
26
N
H
N
27
N
H
N
28
N
H
N
29
N
H
N
30
N
H
N
31
N
H
N
32
N
H
N
33
N
H
N
34
N
H
N
35
N
H
N
36
N
H
N
37
N
H
N
38
N
H
N
39
N
H
N
40
N
H
N
41
N
N
N
42
S
C
N
43
N
C
N
44
N
O
N
45
N
C
N
46
N
C
N
47
N
O
N
48
N
N
N
49
N
O
N
50
N
H
N
51
N
H
N
52
N
H
N
53
N
H
N
54
N
H
N
55
N
H
N
56
N
H
N
57
N
H
N
58
N
N
N
59
S
C
N
60
N
C
N
61
N
O
N
62
N
C
N
63
N
C
N
64
N
O
N
65
N
O
N
66
N
O
N
67
N
H
N
68
N
H
N
69
N
H
N
70
N
H
N
71
N
H
N
72
N
H
N
73
N
H
N
74
N
N
N
75
R
C
N
76
N
C
N
77
N
O
N
78
N
C
N
79
N
S
N
80
N
O
N
81
N
H
N
82
N
H
N
83
N
H
N
84
N
H
N
85
N
H
N
86
N
H
N
87
N
H
Y
88
N
N
Y
89
N
C
N
90
N
N
Y
91
N
N
Y
92
N
C
N
93
N
O
Y
94
N
C
Y
95
N
N
Y
96
N
C
Y
97
N
C
Y
98
N
N
Y
99
N
C
N
100
N
C
N
101
N
N
Y
102
N
C
Y
103
N
C
Y
104
N
C
Y
105
N
C
Y
106
N
C
Y
107
N
C
N
108
N
C
N
109
N
O
N
110
N
N
N
111
S
C
N
112
N
C
N
113
N
C
N
114
N
C
N
115
N
O
N
116
N
O
N
117
N
C
N
118
N
O
N
119
N
O
N
120
N
H
N
121
N
H
N
122
N
H
N
123
N
H
N
124
N
H
N
125
N
H
N
126
N
H
N
127
N
H
N
128
N
H
N
129
N
H
N
130
N
H
N
131
N
H
N
132
N
H
N
133
N
H
N
134
N
H
N
135
N
H
N
136
N
H
N
137
N
H
N
138
N
H
N
139
N
N
N
140
S
C
N
141
N
C
N
142
N
O
N
143
N
C
N
144
N
C
N
145
N
C
N
146
N
O
N
147
N
N
N
148
N
O
N
149
N
H
N
150
N
H
N
151
N
H
N
152
N
H
N
153
N
H
N
154
N
H
N
155
N
H
N
156
N
H
N
157
N
H
N
158
N
H
N
159
N
N
N
160
S
C
N
161
N
C
N
162
N
O
N
163
N
C
N
164
N
C
N
165
N
C
N
166
N
O
N
167
N
O
N
168
N
O
N
169
N
H
N
170
N
H
N
171
N
H
N
172
N
H
N
173
N
H
N
174
N
H
N
175
N
H
N
176
N
H
N
177
N
H
N
178
N
N
N
179
N
C
N
180
N
C
N
181
N
O
N
182
N
O
N
183
N
H
N
184
N
H
N
185
N
H
N
186
N
H
N
187
N
H
N
188
N
N
N
189
S
C
N
190
N
C
N
191
N
O
N
192
N
C
Y
193
N
C
Y
194
N
N
Y
195
N
C
Y
196
N
C
Y
197
N
N
N
198
N
O
N
199
N
H
N
200
N
H
N
201
N
H
N
202
N
H
N
203
N
H
N
204
N
H
N
205
N
H
N
206
N
H
N
207
N
H
N
208
N
H
N
209
N
O
N
210
N
H
N
211
N
H
N
212
N
N
N
213
S
C
N
214
N
C
N
215
N
O
N
216
S
C
N
217
N
C
N
218
N
C
N
219
N
C
N
220
N
O
N
221
N
H
N
222
N
H
N
223
N
H
N
224
N
H
N
225
N
H
N
226
N
H
N
227
N
H
N
228
N
H
N
229
N
H
N
230
N
H
N
231
N
H
N
232
N
H
N
233
N
H
N
234
N
N
N
235
S
C
N
236
N
C
N
237
N
O
N
238
N
C
N
239
N
C
N
240
N
C
N
241
N
C
N
242
N
O
N
243
N
H
N
244
N
H
N
245
N
H
N
246
N
H
N
247
N
H
N
248
N
H
N
249
N
H
N
250
N
H
N
251
N
H
N
252
N
H
N
253
N
H
N
254
N
H
N
255
N
H
N
256
N
N
N
257
S
C
N
258
N
C
N
259
N
O
N
260
N
C
N
261
N
C
N
262
N
C
N
263
N
C
N
264
N
N
N
265
N
O
N
266
N
H
N
267
N
H
N
268
N
H
N
269
N
H
N
270
N
H
N
271
N
H
N
272
N
H
N
273
N
H
N
274
N
H
N
275
N
H
N
276
N
H
N
277
N
H
N
278
N
H
N
279
N
H
N
280
N
H
N
281
N
N
N
282
S
C
N
283
N
C
N
284
N
O
N
285
N
C
N
286
N
C
N
287
N
S
N
288
N
C
N
289
N
O
N
290
N
H
N
291
N
H
N
292
N
H
N
293
N
H
N
294
N
H
N
295
N
H
N
296
N
H
N
297
N
H
N
298
N
H
N
299
N
H
N
300
N
H
N
301
N
N
N
302
S
C
N
303
N
C
N
304
N
O
N
305
N
C
Y
306
N
C
Y
307
N
C
Y
308
N
C
Y
309
N
C
Y
310
N
C
Y
311
N
C
N
312
N
O
N
313
N
H
N
314
N
H
N
315
N
H
N
316
N
H
N
317
N
H
N
318
N
H
N
319
N
H
N
320
N
H
N
321
N
H
N
322
N
H
N
323
N
H
N
324
N
N
N
325
S
C
N
326
N
C
N
327
N
O
N
328
N
C
N
329
N
C
N
330
N
C
N
331
N
O
N
332
N
H
N
333
N
H
N
334
N
H
N
335
N
H
N
336
N
H
N
337
N
H
N
338
N
H
N
339
N
H
N
340
N
H
N
341
N
N
N
342
S
C
N
343
N
C
N
344
N
O
N
345
N
C
N
346
N
O
N
347
N
O
N
348
N
H
N
349
N
H
N
350
N
H
N
351
N
H
N
352
N
H
N
353
N
H
N
354
N
H
N
355
N
N
N
356
S
C
N
357
N
C
N
358
N
O
N
359
R
C
N
360
N
O
N
361
N
C
N
362
N
O
N
363
N
H
N
364
N
H
N
365
N
H
N
366
N
H
N
367
N
H
N
368
N
H
N
369
N
H
N
370
N
H
N
371
N
H
N
372
N
N
N
373
S
C
N
374
N
C
N
375
N
O
N
376
N
C
Y
377
N
C
Y
378
N
C
Y
379
N
C
Y
380
N
N
Y
381
N
C
Y
382
N
C
Y
383
N
C
Y
384
N
C
Y
385
N
C
N
386
N
O
N
387
N
H
N
388
N
H
N
389
N
H
N
390
N
H
N
391
N
H
N
392
N
H
N
393
N
H
N
394
N
H
N
395
N
H
N
396
N
H
N
397
N
H
N
398
N
H
N
399
N
N
N
400
S
C
N
401
N
C
N
402
N
O
N
403
N
C
Y
404
N
C
Y
405
N
C
Y
406
N
C
Y
407
N
C
Y
408
N
C
Y
409
N
C
N
410
N
O
N
411
N
O
N
412
N
H
N
413
N
H
N
414
N
H
N
415
N
H
N
416
N
H
N
417
N
H
N
418
N
H
N
419
N
H
N
420
N
H
N
421
N
H
N
422
N
H
N
423
N
N
N
424
S
C
N
425
N
C
N
426
N
O
N
427
N
C
N
428
N
C
N
429
N
C
N
430
N
O
N
431
N
H
N
432
N
H
N
433
N
H
N
434
N
H
N
435
N
H
N
436
N
H
N
437
N
H
N
438
N
H
N
439
N
H
N
440
N
H
N
441
N
H
N
1
N
sing
N
2
N
sing
N
3
N
sing
N
4
N
sing
N
5
N
sing
N
6
N
sing
N
7
N
doub
N
8
N
sing
N
9
N
sing
N
10
N
sing
N
11
N
sing
N
12
N
sing
N
13
N
sing
N
14
N
sing
N
15
N
sing
N
16
N
sing
N
17
N
sing
N
18
N
sing
N
19
N
doub
N
20
N
sing
N
21
N
sing
N
22
N
sing
N
23
N
sing
N
24
N
sing
N
25
N
sing
N
26
N
sing
N
27
N
sing
N
28
N
sing
N
29
N
sing
N
30
N
sing
N
31
N
sing
N
32
N
sing
N
33
N
doub
N
34
N
sing
N
35
N
sing
N
36
N
sing
N
37
N
sing
N
38
N
sing
N
39
N
sing
N
40
N
sing
N
41
N
sing
N
42
N
sing
N
43
N
sing
N
44
N
sing
N
45
N
doub
N
46
N
sing
N
47
N
sing
N
48
N
sing
N
49
N
sing
N
50
N
doub
N
51
N
sing
N
52
N
sing
N
53
N
sing
N
54
N
sing
N
55
N
sing
N
56
N
sing
N
57
N
sing
N
58
N
sing
N
59
N
sing
N
60
N
sing
N
61
N
doub
N
62
N
sing
N
63
N
sing
N
64
N
sing
N
65
N
sing
N
66
N
doub
N
67
N
sing
N
68
N
sing
N
69
N
sing
N
70
N
sing
N
71
N
sing
N
72
N
sing
N
73
N
sing
N
74
N
sing
N
75
N
sing
N
76
N
doub
N
77
N
sing
N
78
N
sing
N
79
N
sing
N
80
N
sing
N
81
N
sing
N
82
N
sing
Y
83
N
sing
Y
84
N
sing
N
85
N
sing
N
86
N
sing
Y
87
N
doub
N
88
N
sing
N
89
N
sing
Y
90
N
sing
N
91
N
doub
Y
92
N
sing
Y
93
N
sing
Y
94
N
doub
Y
95
N
doub
Y
96
N
sing
N
97
N
sing
Y
98
N
doub
N
99
N
sing
Y
100
N
sing
N
101
N
sing
N
102
N
sing
N
103
N
sing
N
104
N
sing
N
105
N
sing
Y
106
N
doub
Y
107
N
sing
N
108
N
sing
Y
109
N
sing
N
110
N
sing
Y
111
N
doub
N
112
N
sing
Y
113
N
sing
Y
114
N
doub
N
115
N
sing
N
116
N
sing
N
117
N
doub
N
118
N
sing
N
119
N
sing
N
120
N
sing
N
121
N
sing
N
122
N
sing
N
123
N
sing
N
124
N
sing
N
125
N
sing
N
126
N
sing
N
127
N
sing
N
128
N
sing
N
129
N
sing
N
130
N
doub
N
131
N
sing
N
132
N
sing
N
133
N
doub
N
134
N
sing
N
135
N
sing
N
136
N
sing
N
137
N
sing
N
138
N
sing
N
139
N
sing
N
140
N
sing
N
141
N
sing
N
142
N
doub
N
143
N
sing
N
144
N
sing
N
145
N
sing
N
146
N
sing
N
147
N
sing
N
148
N
sing
N
149
N
sing
N
150
N
doub
N
151
N
sing
N
152
N
sing
N
153
N
sing
N
154
N
sing
N
155
N
sing
N
156
N
sing
N
157
N
sing
N
158
N
sing
N
159
N
sing
N
160
N
sing
N
161
N
doub
N
162
N
sing
N
163
N
sing
N
164
N
sing
N
165
N
sing
N
166
N
sing
N
167
N
sing
N
168
N
sing
N
169
N
doub
N
170
N
sing
N
171
N
sing
N
172
N
sing
N
173
N
sing
N
174
N
sing
N
175
N
sing
N
176
N
sing
N
177
N
sing
N
178
N
sing
N
179
N
doub
N
180
N
sing
N
181
N
sing
N
182
N
sing
N
183
N
sing
N
184
N
sing
N
185
N
sing
N
186
N
sing
N
187
N
sing
N
188
N
doub
N
189
N
sing
N
190
N
sing
N
191
N
sing
N
192
N
sing
Y
193
N
sing
Y
194
N
doub
Y
195
N
doub
N
196
N
sing
Y
197
N
sing
N
198
N
sing
Y
199
N
sing
N
200
N
sing
N
201
N
sing
N
202
N
sing
N
203
N
sing
N
204
N
sing
N
205
N
sing
N
206
N
sing
N
207
N
sing
N
208
N
sing
N
209
N
sing
N
210
N
sing
N
211
N
doub
N
212
N
sing
N
213
N
sing
N
214
N
sing
N
215
N
sing
N
216
N
sing
N
217
N
sing
N
218
N
sing
N
219
N
sing
N
220
N
sing
N
221
N
sing
N
222
N
sing
N
223
N
sing
N
224
N
sing
N
225
N
sing
N
226
N
sing
N
227
N
sing
N
228
N
sing
N
229
N
sing
N
230
N
sing
N
231
N
sing
N
232
N
doub
N
233
N
sing
N
234
N
sing
N
235
N
sing
N
236
N
sing
N
237
N
sing
N
238
N
sing
N
239
N
sing
N
240
N
sing
N
241
N
sing
N
242
N
sing
N
243
N
sing
N
244
N
sing
N
245
N
sing
N
246
N
sing
N
247
N
sing
N
248
N
sing
N
249
N
sing
N
250
N
sing
N
251
N
sing
N
252
N
sing
N
253
N
doub
N
254
N
sing
N
255
N
sing
N
256
N
sing
N
257
N
sing
N
258
N
sing
N
259
N
sing
N
260
N
sing
N
261
N
sing
N
262
N
sing
N
263
N
sing
N
264
N
sing
N
265
N
sing
N
266
N
sing
N
267
N
sing
N
268
N
sing
N
269
N
sing
N
270
N
sing
N
271
N
sing
N
272
N
sing
N
273
N
sing
N
274
N
sing
N
275
N
sing
N
276
N
sing
N
277
N
doub
N
278
N
sing
N
279
N
sing
N
280
N
sing
N
281
N
sing
N
282
N
sing
N
283
N
sing
N
284
N
sing
N
285
N
sing
N
286
N
sing
N
287
N
sing
N
288
N
sing
N
289
N
sing
N
290
N
sing
N
291
N
sing
N
292
N
sing
N
293
N
sing
N
294
N
sing
N
295
N
sing
N
296
N
doub
N
297
N
sing
N
298
N
sing
N
299
N
sing
N
300
N
sing
Y
301
N
doub
Y
302
N
sing
Y
303
N
sing
N
304
N
sing
Y
305
N
doub
N
306
N
sing
Y
307
N
doub
N
308
N
sing
Y
309
N
sing
N
310
N
sing
N
311
N
sing
N
312
N
sing
N
313
N
sing
N
314
N
sing
N
315
N
sing
N
316
N
sing
N
317
N
sing
N
318
N
sing
N
319
N
doub
N
320
N
sing
N
321
N
sing
N
322
N
sing
N
323
N
sing
N
324
N
sing
N
325
N
sing
N
326
N
sing
N
327
N
sing
N
328
N
sing
N
329
N
sing
N
330
N
sing
N
331
N
sing
N
332
N
sing
N
333
N
sing
N
334
N
sing
N
335
N
sing
N
336
N
doub
N
337
N
sing
N
338
N
sing
N
339
N
sing
N
340
N
sing
N
341
N
sing
N
342
N
sing
N
343
N
sing
N
344
N
sing
N
345
N
sing
N
346
N
sing
N
347
N
sing
N
348
N
sing
N
349
N
doub
N
350
N
sing
N
351
N
sing
N
352
N
sing
N
353
N
sing
N
354
N
sing
N
355
N
sing
N
356
N
sing
N
357
N
sing
N
358
N
sing
N
359
N
sing
N
360
N
sing
N
361
N
sing
N
362
N
sing
N
363
N
sing
N
364
N
sing
N
365
N
doub
N
366
N
sing
N
367
N
sing
N
368
N
sing
N
369
N
sing
Y
370
N
doub
Y
371
N
sing
Y
372
N
sing
N
373
N
sing
Y
374
N
doub
Y
375
N
sing
Y
376
N
sing
N
377
N
sing
Y
378
N
sing
Y
379
N
doub
N
380
N
sing
Y
381
N
doub
N
382
N
sing
Y
383
N
sing
N
384
N
sing
N
385
N
sing
N
386
N
sing
N
387
N
sing
N
388
N
sing
N
389
N
sing
N
390
N
sing
N
391
N
sing
N
392
N
sing
N
393
N
doub
N
394
N
sing
N
395
N
sing
N
396
N
sing
N
397
N
sing
Y
398
N
doub
Y
399
N
sing
Y
400
N
sing
N
401
N
sing
Y
402
N
doub
N
403
N
sing
Y
404
N
doub
N
405
N
sing
Y
406
N
sing
N
407
N
sing
N
408
N
sing
N
409
N
sing
N
410
N
sing
N
411
N
sing
N
412
N
sing
N
413
N
sing
N
414
N
sing
N
415
N
sing
N
416
N
sing
N
417
N
doub
N
418
N
sing
N
419
N
sing
N
420
N
sing
N
421
N
sing
N
422
N
sing
N
423
N
sing
N
424
N
sing
N
425
N
sing
N
426
N
sing
N
427
N
sing
N
428
N
sing
US
Biochemistry
BICHAW
0033
0006-2960
29
9467
9479
10.1021/bi00492a021
2248959
Crystal structures of recombinant human dihydrofolate reductase complexed with folate and 5-deazafolate.
1990
US
Biochemistry
BICHAW
0033
0006-2960
27
3664
Expression and Site-Directed Mutagenesis of Human Dihydrofolate Reductase
1988
10.2210/pdb1dhf/pdb
pdb_00001dhf
0.027701
0.010633
0.001805
0.000000
0.027678
0.002550
0.000000
0.000000
0.013065
0.00000
0.00000
0.00000
1
x-ray
1
1.0
21349.525
DIHYDROFOLATE REDUCTASE
1.5.1.3
2
man
polymer
441.397
FOLIC ACID
2
syn
non-polymer
18.015
water
116
nat
water
no
no
VGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSRELK
EPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLLP
EYPGVLSDVQEEKGIKYKFEVYEKND
VGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSRELK
EPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLLP
EYPGVLSDVQEEKGIKYKFEVYEKND
A,B
polypeptide(L)
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
human
Homo
sample
9606
Homo sapiens
2.34
47.36
pdbx_database_status
struct_conf
struct_conf_type
struct_keywords
chem_comp_atom
chem_comp_bond
database_2
struct_site
repository
Initial release
Version format compliance
Version format compliance
Derived calculations
Other
Structure summary
Data collection
Database references
Derived calculations
1
0
1990-07-15
1
1
2008-03-24
1
2
2011-07-13
1
3
2017-11-29
1
4
2024-02-07
_pdbx_database_status.process_site
_struct_keywords.text
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_struct_site.pdbx_auth_asym_id
_struct_site.pdbx_auth_comp_id
_struct_site.pdbx_auth_seq_id
HELIX
IN EACH CHAIN, RESIDUES ASP 21 - LEU 22 - PRO 23 -
TRP 24 - PRO 25 - PRO 26 ARE IN LEFT-HANDED POLYPROLINE
HELIX CONFORMATION.
SHEET
THE FOLLOWING REMARKS APPLY TO EACH CHAIN.
IN THE *HELIX*, *SHEET* AND *TURN* RECORDS BELOW, AN *A*
OR *B* HAS BEEN APPENDED TO THE NAMES USED IN THIS REMARK
TO DISTINGUISH CHAINS.
RESIDUE GLN 102 PARTICIPATES IN BOTH HELIX E AND EP.
RESIDUES LYS 108 AND VAL 109 PARTICIPATE IN BOTH HELIX
EP AND STRAND E.
RESIDUE GLU 172 IS IN TIGHT-TURN 8 AND BETA STRAND G.
RESIDUE ILE 175 IS IN TIGHT-TURN 8 AND BETA STRAND H.
RESIDUES ASP 110 - MET 111 FORM A BETA-BULGE IN STRAND E.
RESIDUES VAL 115 - GLY 116 FORM A BETA-BULGE IN STRAND E.
TIGHT TURN 7 DISRUPTS STRAND G. THIS IS REPRESENTED ON THE
SHEET RECORDS BELOW BY PRESENTING THE SHEET TWICE WITH
STRAND 8 DIFFERENT.
Y
BNL
1989-10-25
REL
FOL
FOLIC ACID
HOH
water
FOL
187
2
FOL
FOL
187
A
FOL
187
2
FOL
FOL
187
B
HOH
403
3
HOH
HOH
403
A
HOH
404
3
HOH
HOH
404
A
HOH
406
3
HOH
HOH
406
A
HOH
407
3
HOH
HOH
407
A
HOH
411
3
HOH
HOH
411
A
HOH
412
3
HOH
HOH
412
A
HOH
416
3
HOH
HOH
416
A
HOH
417
3
HOH
HOH
417
A
HOH
419
3
HOH
HOH
419
A
HOH
420
3
HOH
HOH
420
A
HOH
422
3
HOH
HOH
422
A
HOH
424
3
HOH
HOH
424
A
HOH
428
3
HOH
HOH
428
A
HOH
430
3
HOH
HOH
430
A
HOH
431
3
HOH
HOH
431
A
HOH
433
3
HOH
HOH
433
A
HOH
435
3
HOH
HOH
435
A
HOH
436
3
HOH
HOH
436
A
HOH
438
3
HOH
HOH
438
A
HOH
443
3
HOH
HOH
443
A
HOH
450
3
HOH
HOH
450
A
HOH
453
3
HOH
HOH
453
A
HOH
455
3
HOH
HOH
455
A
HOH
456
3
HOH
HOH
456
A
HOH
457
3
HOH
HOH
457
A
HOH
459
3
HOH
HOH
459
A
HOH
460
3
HOH
HOH
460
A
HOH
464
3
HOH
HOH
464
A
HOH
466
3
HOH
HOH
466
A
HOH
467
3
HOH
HOH
467
A
HOH
469
3
HOH
HOH
469
A
HOH
470
3
HOH
HOH
470
A
HOH
471
3
HOH
HOH
471
A
HOH
472
3
HOH
HOH
472
A
HOH
475
3
HOH
HOH
475
A
HOH
476
3
HOH
HOH
476
A
HOH
477
3
HOH
HOH
477
A
HOH
478
3
HOH
HOH
478
A
HOH
479
3
HOH
HOH
479
A
HOH
480
3
HOH
HOH
480
A
HOH
482
3
HOH
HOH
482
A
HOH
483
3
HOH
HOH
483
A
HOH
485
3
HOH
HOH
485
A
HOH
487
3
HOH
HOH
487
A
HOH
490
3
HOH
HOH
490
A
HOH
491
3
HOH
HOH
491
A
HOH
492
3
HOH
HOH
492
A
HOH
493
3
HOH
HOH
493
A
HOH
495
3
HOH
HOH
495
A
HOH
496
3
HOH
HOH
496
A
HOH
500
3
HOH
HOH
500
A
HOH
501
3
HOH
HOH
501
A
HOH
506
3
HOH
HOH
506
A
HOH
507
3
HOH
HOH
507
A
HOH
508
3
HOH
HOH
508
A
HOH
509
3
HOH
HOH
509
A
HOH
510
3
HOH
HOH
510
A
HOH
511
3
HOH
HOH
511
A
HOH
513
3
HOH
HOH
513
A
HOH
514
3
HOH
HOH
514
A
HOH
515
3
HOH
HOH
515
A
HOH
516
3
HOH
HOH
516
A
HOH
401
3
HOH
HOH
401
B
HOH
402
3
HOH
HOH
402
B
HOH
405
3
HOH
HOH
405
B
HOH
408
3
HOH
HOH
408
B
HOH
409
3
HOH
HOH
409
B
HOH
410
3
HOH
HOH
410
B
HOH
413
3
HOH
HOH
413
B
HOH
414
3
HOH
HOH
414
B
HOH
415
3
HOH
HOH
415
B
HOH
418
3
HOH
HOH
418
B
HOH
421
3
HOH
HOH
421
B
HOH
423
3
HOH
HOH
423
B
HOH
425
3
HOH
HOH
425
B
HOH
426
3
HOH
HOH
426
B
HOH
427
3
HOH
HOH
427
B
HOH
429
3
HOH
HOH
429
B
HOH
432
3
HOH
HOH
432
B
HOH
434
3
HOH
HOH
434
B
HOH
437
3
HOH
HOH
437
B
HOH
439
3
HOH
HOH
439
B
HOH
440
3
HOH
HOH
440
B
HOH
441
3
HOH
HOH
441
B
HOH
442
3
HOH
HOH
442
B
HOH
444
3
HOH
HOH
444
B
HOH
445
3
HOH
HOH
445
B
HOH
446
3
HOH
HOH
446
B
HOH
447
3
HOH
HOH
447
B
HOH
448
3
HOH
HOH
448
B
HOH
449
3
HOH
HOH
449
B
HOH
451
3
HOH
HOH
451
B
HOH
452
3
HOH
HOH
452
B
HOH
454
3
HOH
HOH
454
B
HOH
458
3
HOH
HOH
458
B
HOH
461
3
HOH
HOH
461
B
HOH
462
3
HOH
HOH
462
B
HOH
463
3
HOH
HOH
463
B
HOH
465
3
HOH
HOH
465
B
HOH
468
3
HOH
HOH
468
B
HOH
473
3
HOH
HOH
473
B
HOH
474
3
HOH
HOH
474
B
HOH
481
3
HOH
HOH
481
B
HOH
484
3
HOH
HOH
484
B
HOH
486
3
HOH
HOH
486
B
HOH
488
3
HOH
HOH
488
B
HOH
489
3
HOH
HOH
489
B
HOH
494
3
HOH
HOH
494
B
HOH
497
3
HOH
HOH
497
B
HOH
498
3
HOH
HOH
498
B
HOH
499
3
HOH
HOH
499
B
HOH
502
3
HOH
HOH
502
B
HOH
503
3
HOH
HOH
503
B
HOH
504
3
HOH
HOH
504
B
HOH
505
3
HOH
HOH
505
B
HOH
512
3
HOH
HOH
512
B
n
1
1
A
n
2
2
A
n
3
3
A
LEU
4
n
4
LEU
4
A
ASN
5
n
5
ASN
5
A
CYS
6
n
6
CYS
6
A
ILE
7
n
7
ILE
7
A
VAL
8
n
8
VAL
8
A
ALA
9
n
9
ALA
9
A
VAL
10
n
10
VAL
10
A
SER
11
n
11
SER
11
A
GLN
12
n
12
GLN
12
A
ASN
13
n
13
ASN
13
A
MET
14
n
14
MET
14
A
GLY
15
n
15
GLY
15
A
ILE
16
n
16
ILE
16
A
GLY
17
n
17
GLY
17
A
LYS
18
n
18
LYS
18
A
ASN
19
n
19
ASN
19
A
GLY
20
n
20
GLY
20
A
ASP
21
n
21
ASP
21
A
LEU
22
n
22
LEU
22
A
PRO
23
n
23
PRO
23
A
TRP
24
n
24
TRP
24
A
PRO
25
n
25
PRO
25
A
PRO
26
n
26
PRO
26
A
LEU
27
n
27
LEU
27
A
ARG
28
n
28
ARG
28
A
ASN
29
n
29
ASN
29
A
GLU
30
n
30
GLU
30
A
PHE
31
n
31
PHE
31
A
ARG
32
n
32
ARG
32
A
TYR
33
n
33
TYR
33
A
PHE
34
n
34
PHE
34
A
GLN
35
n
35
GLN
35
A
ARG
36
n
36
ARG
36
A
MET
37
n
37
MET
37
A
THR
38
n
38
THR
38
A
THR
39
n
39
THR
39
A
THR
40
n
40
THR
40
A
SER
41
n
41
SER
41
A
SER
42
n
42
SER
42
A
VAL
43
n
43
VAL
43
A
GLU
44
n
44
GLU
44
A
GLY
45
n
45
GLY
45
A
LYS
46
n
46
LYS
46
A
GLN
47
n
47
GLN
47
A
ASN
48
n
48
ASN
48
A
LEU
49
n
49
LEU
49
A
VAL
50
n
50
VAL
50
A
ILE
51
n
51
ILE
51
A
MET
52
n
52
MET
52
A
GLY
53
n
53
GLY
53
A
LYS
54
n
54
LYS
54
A
LYS
55
n
55
LYS
55
A
THR
56
n
56
THR
56
A
TRP
57
n
57
TRP
57
A
PHE
58
n
58
PHE
58
A
SER
59
n
59
SER
59
A
ILE
60
n
60
ILE
60
A
PRO
61
n
61
PRO
61
A
GLU
62
n
62
GLU
62
A
LYS
63
n
63
LYS
63
A
ASN
64
n
64
ASN
64
A
ARG
65
n
65
ARG
65
A
PRO
66
n
66
PRO
66
A
LEU
67
n
67
LEU
67
A
LYS
68
n
68
LYS
68
A
GLY
69
n
69
GLY
69
A
ARG
70
n
70
ARG
70
A
ILE
71
n
71
ILE
71
A
ASN
72
n
72
ASN
72
A
LEU
73
n
73
LEU
73
A
VAL
74
n
74
VAL
74
A
LEU
75
n
75
LEU
75
A
SER
76
n
76
SER
76
A
ARG
77
n
77
ARG
77
A
GLU
78
n
78
GLU
78
A
LEU
79
n
79
LEU
79
A
LYS
80
n
80
LYS
80
A
GLU
81
n
81
GLU
81
A
PRO
82
n
82
PRO
82
A
PRO
83
n
83
PRO
83
A
GLN
84
n
84
GLN
84
A
GLY
85
n
85
GLY
85
A
ALA
86
n
86
ALA
86
A
HIS
87
n
87
HIS
87
A
PHE
88
n
88
PHE
88
A
LEU
89
n
89
LEU
89
A
SER
90
n
90
SER
90
A
ARG
91
n
91
ARG
91
A
SER
92
n
92
SER
92
A
LEU
93
n
93
LEU
93
A
ASP
94
n
94
ASP
94
A
ASP
95
n
95
ASP
95
A
ALA
96
n
96
ALA
96
A
LEU
97
n
97
LEU
97
A
LYS
98
n
98
LYS
98
A
LEU
99
n
99
LEU
99
A
THR
100
n
100
THR
100
A
GLU
101
n
101
GLU
101
A
GLN
102
n
102
GLN
102
A
PRO
103
n
103
PRO
103
A
GLU
104
n
104
GLU
104
A
LEU
105
n
105
LEU
105
A
ALA
106
n
106
ALA
106
A
ASN
107
n
107
ASN
107
A
LYS
108
n
108
LYS
108
A
VAL
109
n
109
VAL
109
A
ASP
110
n
110
ASP
110
A
MET
111
n
111
MET
111
A
VAL
112
n
112
VAL
112
A
TRP
113
n
113
TRP
113
A
ILE
114
n
114
ILE
114
A
VAL
115
n
115
VAL
115
A
GLY
116
n
116
GLY
116
A
GLY
117
n
117
GLY
117
A
SER
118
n
118
SER
118
A
SER
119
n
119
SER
119
A
VAL
120
n
120
VAL
120
A
TYR
121
n
121
TYR
121
A
LYS
122
n
122
LYS
122
A
GLU
123
n
123
GLU
123
A
ALA
124
n
124
ALA
124
A
MET
125
n
125
MET
125
A
ASN
126
n
126
ASN
126
A
HIS
127
n
127
HIS
127
A
PRO
128
n
128
PRO
128
A
GLY
129
n
129
GLY
129
A
HIS
130
n
130
HIS
130
A
LEU
131
n
131
LEU
131
A
LYS
132
n
132
LYS
132
A
LEU
133
n
133
LEU
133
A
PHE
134
n
134
PHE
134
A
VAL
135
n
135
VAL
135
A
THR
136
n
136
THR
136
A
ARG
137
n
137
ARG
137
A
ILE
138
n
138
ILE
138
A
MET
139
n
139
MET
139
A
GLN
140
n
140
GLN
140
A
ASP
141
n
141
ASP
141
A
PHE
142
n
142
PHE
142
A
GLU
143
n
143
GLU
143
A
SER
144
n
144
SER
144
A
ASP
145
n
145
ASP
145
A
THR
146
n
146
THR
146
A
PHE
147
n
147
PHE
147
A
PHE
148
n
148
PHE
148
A
PRO
149
n
149
PRO
149
A
GLU
150
n
150
GLU
150
A
ILE
151
n
151
ILE
151
A
ASP
152
n
152
ASP
152
A
LEU
153
n
153
LEU
153
A
GLU
154
n
154
GLU
154
A
LYS
155
n
155
LYS
155
A
TYR
156
n
156
TYR
156
A
LYS
157
n
157
LYS
157
A
LEU
158
n
158
LEU
158
A
LEU
159
n
159
LEU
159
A
PRO
160
n
160
PRO
160
A
GLU
161
n
161
GLU
161
A
TYR
162
n
162
TYR
162
A
PRO
163
n
163
PRO
163
A
GLY
164
n
164
GLY
164
A
VAL
165
n
165
VAL
165
A
LEU
166
n
166
LEU
166
A
SER
167
n
167
SER
167
A
ASP
168
n
168
ASP
168
A
VAL
169
n
169
VAL
169
A
GLN
170
n
170
GLN
170
A
GLU
171
n
171
GLU
171
A
GLU
172
n
172
GLU
172
A
LYS
173
n
173
LYS
173
A
GLY
174
n
174
GLY
174
A
ILE
175
n
175
ILE
175
A
LYS
176
n
176
LYS
176
A
TYR
177
n
177
TYR
177
A
LYS
178
n
178
LYS
178
A
PHE
179
n
179
PHE
179
A
GLU
180
n
180
GLU
180
A
VAL
181
n
181
VAL
181
A
TYR
182
n
182
TYR
182
A
GLU
183
n
183
GLU
183
A
LYS
184
n
184
LYS
184
A
ASN
185
n
185
ASN
185
A
n
186
186
A
n
1
1
B
n
2
2
B
n
3
3
B
LEU
4
n
4
LEU
4
B
ASN
5
n
5
ASN
5
B
CYS
6
n
6
CYS
6
B
ILE
7
n
7
ILE
7
B
VAL
8
n
8
VAL
8
B
ALA
9
n
9
ALA
9
B
VAL
10
n
10
VAL
10
B
SER
11
n
11
SER
11
B
GLN
12
n
12
GLN
12
B
ASN
13
n
13
ASN
13
B
MET
14
n
14
MET
14
B
GLY
15
n
15
GLY
15
B
ILE
16
n
16
ILE
16
B
GLY
17
n
17
GLY
17
B
LYS
18
n
18
LYS
18
B
ASN
19
n
19
ASN
19
B
GLY
20
n
20
GLY
20
B
ASP
21
n
21
ASP
21
B
LEU
22
n
22
LEU
22
B
PRO
23
n
23
PRO
23
B
TRP
24
n
24
TRP
24
B
PRO
25
n
25
PRO
25
B
PRO
26
n
26
PRO
26
B
LEU
27
n
27
LEU
27
B
ARG
28
n
28
ARG
28
B
ASN
29
n
29
ASN
29
B
GLU
30
n
30
GLU
30
B
PHE
31
n
31
PHE
31
B
ARG
32
n
32
ARG
32
B
TYR
33
n
33
TYR
33
B
PHE
34
n
34
PHE
34
B
GLN
35
n
35
GLN
35
B
ARG
36
n
36
ARG
36
B
MET
37
n
37
MET
37
B
THR
38
n
38
THR
38
B
THR
39
n
39
THR
39
B
THR
40
n
40
THR
40
B
SER
41
n
41
SER
41
B
SER
42
n
42
SER
42
B
VAL
43
n
43
VAL
43
B
GLU
44
n
44
GLU
44
B
GLY
45
n
45
GLY
45
B
LYS
46
n
46
LYS
46
B
GLN
47
n
47
GLN
47
B
ASN
48
n
48
ASN
48
B
LEU
49
n
49
LEU
49
B
VAL
50
n
50
VAL
50
B
ILE
51
n
51
ILE
51
B
MET
52
n
52
MET
52
B
GLY
53
n
53
GLY
53
B
LYS
54
n
54
LYS
54
B
LYS
55
n
55
LYS
55
B
THR
56
n
56
THR
56
B
TRP
57
n
57
TRP
57
B
PHE
58
n
58
PHE
58
B
SER
59
n
59
SER
59
B
ILE
60
n
60
ILE
60
B
PRO
61
n
61
PRO
61
B
GLU
62
n
62
GLU
62
B
LYS
63
n
63
LYS
63
B
ASN
64
n
64
ASN
64
B
ARG
65
n
65
ARG
65
B
PRO
66
n
66
PRO
66
B
LEU
67
n
67
LEU
67
B
LYS
68
n
68
LYS
68
B
GLY
69
n
69
GLY
69
B
ARG
70
n
70
ARG
70
B
ILE
71
n
71
ILE
71
B
ASN
72
n
72
ASN
72
B
LEU
73
n
73
LEU
73
B
VAL
74
n
74
VAL
74
B
LEU
75
n
75
LEU
75
B
SER
76
n
76
SER
76
B
ARG
77
n
77
ARG
77
B
GLU
78
n
78
GLU
78
B
LEU
79
n
79
LEU
79
B
LYS
80
n
80
LYS
80
B
GLU
81
n
81
GLU
81
B
PRO
82
n
82
PRO
82
B
PRO
83
n
83
PRO
83
B
GLN
84
n
84
GLN
84
B
GLY
85
n
85
GLY
85
B
ALA
86
n
86
ALA
86
B
HIS
87
n
87
HIS
87
B
PHE
88
n
88
PHE
88
B
LEU
89
n
89
LEU
89
B
SER
90
n
90
SER
90
B
ARG
91
n
91
ARG
91
B
SER
92
n
92
SER
92
B
LEU
93
n
93
LEU
93
B
ASP
94
n
94
ASP
94
B
ASP
95
n
95
ASP
95
B
ALA
96
n
96
ALA
96
B
LEU
97
n
97
LEU
97
B
LYS
98
n
98
LYS
98
B
LEU
99
n
99
LEU
99
B
THR
100
n
100
THR
100
B
GLU
101
n
101
GLU
101
B
GLN
102
n
102
GLN
102
B
PRO
103
n
103
PRO
103
B
GLU
104
n
104
GLU
104
B
LEU
105
n
105
LEU
105
B
ALA
106
n
106
ALA
106
B
ASN
107
n
107
ASN
107
B
LYS
108
n
108
LYS
108
B
VAL
109
n
109
VAL
109
B
ASP
110
n
110
ASP
110
B
MET
111
n
111
MET
111
B
VAL
112
n
112
VAL
112
B
TRP
113
n
113
TRP
113
B
ILE
114
n
114
ILE
114
B
VAL
115
n
115
VAL
115
B
GLY
116
n
116
GLY
116
B
GLY
117
n
117
GLY
117
B
SER
118
n
118
SER
118
B
SER
119
n
119
SER
119
B
VAL
120
n
120
VAL
120
B
TYR
121
n
121
TYR
121
B
LYS
122
n
122
LYS
122
B
GLU
123
n
123
GLU
123
B
ALA
124
n
124
ALA
124
B
MET
125
n
125
MET
125
B
ASN
126
n
126
ASN
126
B
HIS
127
n
127
HIS
127
B
PRO
128
n
128
PRO
128
B
GLY
129
n
129
GLY
129
B
HIS
130
n
130
HIS
130
B
LEU
131
n
131
LEU
131
B
LYS
132
n
132
LYS
132
B
LEU
133
n
133
LEU
133
B
PHE
134
n
134
PHE
134
B
VAL
135
n
135
VAL
135
B
THR
136
n
136
THR
136
B
ARG
137
n
137
ARG
137
B
ILE
138
n
138
ILE
138
B
MET
139
n
139
MET
139
B
GLN
140
n
140
GLN
140
B
ASP
141
n
141
ASP
141
B
PHE
142
n
142
PHE
142
B
GLU
143
n
143
GLU
143
B
SER
144
n
144
SER
144
B
ASP
145
n
145
ASP
145
B
THR
146
n
146
THR
146
B
PHE
147
n
147
PHE
147
B
PHE
148
n
148
PHE
148
B
PRO
149
n
149
PRO
149
B
GLU
150
n
150
GLU
150
B
ILE
151
n
151
ILE
151
B
ASP
152
n
152
ASP
152
B
LEU
153
n
153
LEU
153
B
GLU
154
n
154
GLU
154
B
LYS
155
n
155
LYS
155
B
TYR
156
n
156
TYR
156
B
LYS
157
n
157
LYS
157
B
LEU
158
n
158
LEU
158
B
LEU
159
n
159
LEU
159
B
PRO
160
n
160
PRO
160
B
GLU
161
n
161
GLU
161
B
TYR
162
n
162
TYR
162
B
PRO
163
n
163
PRO
163
B
GLY
164
n
164
GLY
164
B
VAL
165
n
165
VAL
165
B
LEU
166
n
166
LEU
166
B
SER
167
n
167
SER
167
B
ASP
168
n
168
ASP
168
B
VAL
169
n
169
VAL
169
B
GLN
170
n
170
GLN
170
B
GLU
171
n
171
GLU
171
B
GLU
172
n
172
GLU
172
B
LYS
173
n
173
LYS
173
B
GLY
174
n
174
GLY
174
B
ILE
175
n
175
ILE
175
B
LYS
176
n
176
LYS
176
B
TYR
177
n
177
TYR
177
B
LYS
178
n
178
LYS
178
B
PHE
179
n
179
PHE
179
B
GLU
180
n
180
GLU
180
B
VAL
181
n
181
VAL
181
B
TYR
182
n
182
TYR
182
B
GLU
183
n
183
GLU
183
B
LYS
184
n
184
LYS
184
B
ASN
185
n
185
ASN
185
B
n
186
186
B
author_defined_assembly
2
dimeric
1.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
1_555
x,y,z
identity operation
0.0000000000
0.0000000000
0.0000000000
A
O
PHE
88
A
O
PHE
88
A
N
VAL
74
A
N
VAL
74
A
N
LEU
73
A
N
LEU
73
A
O
GLY
53
A
O
GLY
53
A
N
ILE
51
A
N
ILE
51
A
O
TRP
113
A
O
TRP
113
A
N
ILE
114
A
N
ILE
114
A
O
ASN
5
A
O
ASN
5
A
O
CYS
6
A
O
CYS
6
A
N
PHE
134
A
N
PHE
134
A
O
LEU
133
A
O
LEU
133
A
N
TYR
182
A
N
TYR
182
A
N
GLU
183
A
N
GLU
183
A
O
LYS
157
A
O
LYS
157
A
O
PHE
88
A
O
PHE
88
A
N
VAL
74
A
N
VAL
74
A
N
LEU
73
A
N
LEU
73
A
O
GLY
53
A
O
GLY
53
A
N
ILE
51
A
N
ILE
51
A
O
TRP
113
A
O
TRP
113
A
N
ILE
114
A
N
ILE
114
A
O
ASN
5
A
O
ASN
5
A
O
CYS
6
A
O
CYS
6
A
N
PHE
134
A
N
PHE
134
A
O
LEU
133
A
O
LEU
133
A
N
TYR
182
A
N
TYR
182
A
N
TYR
177
A
N
TYR
177
A
O
GLN
170
A
O
GLN
170
B
O
PHE
88
B
O
PHE
88
B
N
VAL
74
B
N
VAL
74
B
N
LEU
73
B
N
LEU
73
B
O
GLY
53
B
O
GLY
53
B
N
ILE
51
B
N
ILE
51
B
O
TRP
113
B
O
TRP
113
B
N
ILE
114
B
N
ILE
114
B
O
ASN
5
B
O
ASN
5
B
O
CYS
6
B
O
CYS
6
B
N
PHE
134
B
N
PHE
134
B
O
LEU
133
B
O
LEU
133
B
N
TYR
182
B
N
TYR
182
B
N
GLU
183
B
N
GLU
183
B
O
LYS
157
B
O
LYS
157
B
O
PHE
88
B
O
PHE
88
B
N
VAL
74
B
N
VAL
74
B
N
LEU
73
B
N
LEU
73
B
O
GLY
53
B
O
GLY
53
B
N
ILE
51
B
N
ILE
51
B
O
TRP
113
B
O
TRP
113
B
N
ILE
114
B
N
ILE
114
B
O
ASN
5
B
O
ASN
5
B
O
CYS
6
B
O
CYS
6
B
N
PHE
134
B
N
PHE
134
B
O
LEU
133
B
O
LEU
133
B
N
TYR
182
B
N
TYR
182
B
N
TYR
177
B
N
TYR
177
B
O
GLN
170
B
O
GLN
170
1
A
VAL
1
A
VAL
1
1
Y
1
A
GLY
2
A
GLY
2
1
Y
1
A
SER
3
A
SER
3
1
Y
1
A
ASP
186
A
ASP
186
1
Y
1
B
VAL
1
B
VAL
1
1
Y
1
B
GLY
2
B
GLY
2
1
Y
1
B
SER
3
B
SER
3
1
Y
1
B
ASP
186
B
ASP
186
1
Y
1
A
A
NE2
OE1
HIS
GLU
130
183
1.92
1
A
A
O
CE
ASP
LYS
94
98
2.05
1
B
B
NH1
O
ARG
GLY
36
164
2.08
1
A
A
O
ND2
PRO
ASN
103
107
2.10
1
A
A
O
OG1
GLN
THR
35
39
2.13
1
B
B
OE1
OH
GLU
TYR
180
182
2.14
1
B
B
CE1
OE1
HIS
GLU
130
183
2.16
1
A
ARG
28
0.125
SIDE CHAIN
1
A
ARG
91
0.169
SIDE CHAIN
1
B
ARG
28
0.161
SIDE CHAIN
1
B
ARG
32
0.227
SIDE CHAIN
1
B
ARG
65
0.179
SIDE CHAIN
1
B
ARG
77
0.086
SIDE CHAIN
1
B
ARG
91
0.080
SIDE CHAIN
1
-4.82
0.70
120.80
115.98
A
A
A
CB
CG
CD1
PHE
PHE
PHE
58
58
58
N
1
16.52
2.20
113.40
129.92
A
A
A
CA
CB
CG
GLU
GLU
GLU
62
62
62
N
1
4.11
0.50
120.30
124.41
A
A
A
NE
CZ
NH1
ARG
ARG
ARG
137
137
137
N
1
-5.48
0.90
118.30
112.82
A
A
A
CB
CG
OD2
ASP
ASP
ASP
141
141
141
N
1
14.56
2.20
113.40
127.96
A
A
A
CA
CB
CG
GLU
GLU
GLU
172
172
172
N
1
15.83
2.00
110.40
126.23
B
B
B
N
CA
CB
LEU
LEU
LEU
22
22
22
N
1
32.00
2.30
115.30
147.30
B
B
B
CA
CB
CG
LEU
LEU
LEU
22
22
22
N
1
3.06
0.50
120.30
123.36
B
B
B
NE
CZ
NH2
ARG
ARG
ARG
36
36
36
N
1
4.44
0.50
120.30
124.74
B
B
B
NE
CZ
NH1
ARG
ARG
ARG
70
70
70
N
1
8.61
1.40
123.60
132.21
B
B
B
CD
NE
CZ
ARG
ARG
ARG
77
77
77
N
1
13.52
1.80
110.60
124.12
B
B
B
N
CA
CB
GLU
GLU
GLU
81
81
81
N
1
15.55
2.20
113.40
128.95
B
B
B
CA
CB
CG
GLU
GLU
GLU
81
81
81
N
1
11.14
1.50
110.50
121.64
B
B
B
N
CA
CB
SER
SER
SER
90
90
90
N
1
3.66
0.50
120.30
123.96
B
B
B
NE
CZ
NH1
ARG
ARG
ARG
91
91
91
N
1
15.83
2.20
113.40
129.23
B
B
B
CA
CB
CG
GLU
GLU
GLU
104
104
104
N
1
14.83
2.10
122.30
137.13
B
B
B
C
N
CA
GLY
GLY
GLY
116
117
117
Y
1
-3.62
0.60
121.00
117.38
B
B
B
CB
CG
CD2
TYR
TYR
TYR
162
162
162
N
1
3.71
0.60
121.00
124.71
B
B
B
CB
CG
CD1
TYR
TYR
TYR
162
162
162
N
1
13.00
1.80
110.60
123.60
B
B
B
N
CA
CB
GLU
GLU
GLU
172
172
172
N
1
15.58
2.20
113.40
128.98
B
B
B
CA
CB
CG
GLU
GLU
GLU
172
172
172
N
1
A
B
OD1
NH1
ASP
ARG
141
32
2.19
1_555
1_554
1
A
LYS
18
-162.45
118.35
1
A
ASN
19
56.89
4.18
1
A
SER
76
-170.90
120.53
1
A
LEU
99
-39.24
-33.63
1
A
ASP
110
-106.94
-87.13
1
A
MET
139
-67.58
71.12
1
A
GLN
140
179.74
143.59
1
A
PRO
160
-54.52
-5.63
1
A
PRO
163
-35.60
124.95
1
B
GLU
62
-35.78
-27.75
1
B
GLU
78
-70.00
-90.01
1
B
LEU
79
-2.84
131.66
1
B
LYS
80
-75.27
-70.14
1
B
ASP
110
-101.76
-83.80
1
B
MET
139
-79.21
47.59
1
B
PRO
160
-65.75
0.27
0.1760000
2.3
1
2.3
116
3132
64
0
2952
0.020
0.018
0.033
0.023
0.043
0.035
4.32
2.000
5.96
3.000
5.42
2.000
7.90
3.000
0.015
0.013
0.324
0.200
0.216
0.400
0.292
0.400
0.208
0.400
5.3
5.0
25.1
15.0
26.4
15.0
refinement
PROLSQ
CRYSTAL STRUCTURES OF RECOMBINANT HUMAN DIHYDROFOLATE REDUCTASE COMPLEXED WITH FOLATE AND 5-DEAZOFOLATE
1
N
N
1
N
N
2
N
N
2
N
N
3
N
N
3
N
N
A
LEU
27
A
LEU
27
HELX_P
A
THR
40
A
THR
40
1
BA
14
A
GLY
53
A
GLY
53
HELX_P
A
SER
59
A
SER
59
1
CA
7
A
SER
92
A
SER
92
HELX_P
A
GLN
102
A
GLN
102
1
EA
11
A
GLN
102
A
GLN
102
HELX_P
NOT PRESENT IN BACTERIAL
A
VAL
109
A
VAL
109
1
EPA
8
A
GLY
117
A
GLY
117
HELX_P
A
HIS
127
A
HIS
127
1
FA
11
B
LEU
27
B
LEU
27
HELX_P
B
THR
40
B
THR
40
1
BB
14
B
GLY
53
B
GLY
53
HELX_P
B
SER
59
B
SER
59
1
CB
7
B
SER
92
B
SER
92
HELX_P
B
GLN
102
B
GLN
102
1
EB
11
B
GLN
102
B
GLN
102
HELX_P
NOT PRESENT IN BACTERIAL
B
VAL
109
B
VAL
109
1
EPB
8
B
GLY
117
B
GLY
117
HELX_P
B
HIS
127
B
HIS
127
1
FB
11
OXIDOREDUCTASE
OXIDO-REDUCTASE, OXIDOREDUCTASE
A
ARG
65
A
ARG
65
1
A
PRO
66
A
PRO
66
-0.43
A
GLY
116
A
GLY
116
1
A
GLY
117
A
GLY
117
3.67
B
ARG
65
B
ARG
65
1
B
PRO
66
B
PRO
66
-0.53
B
GLY
116
B
GLY
116
1
B
GLY
117
B
GLY
117
3.70
DYR_HUMAN
UNP
1
1
P00374
VGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLVIMGKKTWFSIPEKNRPLKGRINLVLSRELK
EPPQGAHFLSRSLDDALKLTEQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPEIDLEKYKLLP
EYPGVLSDVQEEKGIKYKFEVYEKND
1
186
1DHF
1
186
P00374
A
1
1
186
1
186
1DHF
1
186
P00374
B
1
1
186
8
8
8
8
parallel
parallel
parallel
parallel
parallel
anti-parallel
anti-parallel
parallel
parallel
parallel
parallel
parallel
anti-parallel
anti-parallel
parallel
parallel
parallel
parallel
parallel
anti-parallel
anti-parallel
parallel
parallel
parallel
parallel
parallel
anti-parallel
anti-parallel
A
PHE
88
A
PHE
88
A
SER
90
A
SER
90
A
ILE
71
A
ILE
71
A
SER
76
A
SER
76
A
GLN
47
A
GLN
47
A
GLY
53
A
GLY
53
A
LYS
108
A
LYS
108
A
GLY
116
A
GLY
116
A
LEU
4
A
LEU
4
A
VAL
10
A
VAL
10
A
HIS
130
A
HIS
130
A
MET
139
A
MET
139
A
ILE
175
A
ILE
175
A
ASN
185
A
ASN
185
A
LYS
157
A
LYS
157
A
LEU
159
A
LEU
159
A
PHE
88
A
PHE
88
A
SER
90
A
SER
90
A
ILE
71
A
ILE
71
A
SER
76
A
SER
76
A
GLN
47
A
GLN
47
A
GLY
53
A
GLY
53
A
LYS
108
A
LYS
108
A
GLY
116
A
GLY
116
A
LEU
4
A
LEU
4
A
VAL
10
A
VAL
10
A
HIS
130
A
HIS
130
A
MET
139
A
MET
139
A
ILE
175
A
ILE
175
A
ASN
185
A
ASN
185
A
ASP
168
A
ASP
168
A
GLU
172
A
GLU
172
B
PHE
88
B
PHE
88
B
SER
90
B
SER
90
B
ILE
71
B
ILE
71
B
SER
76
B
SER
76
B
GLN
47
B
GLN
47
B
GLY
53
B
GLY
53
B
LYS
108
B
LYS
108
B
GLY
116
B
GLY
116
B
LEU
4
B
LEU
4
B
VAL
10
B
VAL
10
B
HIS
130
B
HIS
130
B
MET
139
B
MET
139
B
ILE
175
B
ILE
175
B
ASN
185
B
ASN
185
B
LYS
157
B
LYS
157
B
LEU
159
B
LEU
159
B
PHE
88
B
PHE
88
B
SER
90
B
SER
90
B
ILE
71
B
ILE
71
B
SER
76
B
SER
76
B
GLN
47
B
GLN
47
B
GLY
53
B
GLY
53
B
LYS
108
B
LYS
108
B
GLY
116
B
GLY
116
B
LEU
4
B
LEU
4
B
VAL
10
B
VAL
10
B
HIS
130
B
HIS
130
B
MET
139
B
MET
139
B
ILE
175
B
ILE
175
B
ASN
185
B
ASN
185
B
ASP
168
B
ASP
168
B
GLU
172
B
GLU
172
BINDING SITE FOR RESIDUE FOL A 187
A
FOL
187
Software
16
BINDING SITE FOR RESIDUE FOL B 187
B
FOL
187
Software
17
A
ILE
7
A
ILE
7
16
1_555
A
VAL
8
A
VAL
8
16
1_555
A
ALA
9
A
ALA
9
16
1_555
A
GLU
30
A
GLU
30
16
1_555
A
PHE
31
A
PHE
31
16
1_555
A
ARG
32
A
ARG
32
16
1_555
A
PHE
34
A
PHE
34
16
1_555
A
GLN
35
A
GLN
35
16
1_555
A
ILE
60
A
ILE
60
16
1_555
A
PRO
61
A
PRO
61
16
1_555
A
ASN
64
A
ASN
64
16
1_555
A
LEU
67
A
LEU
67
16
1_555
A
ARG
70
A
ARG
70
16
1_555
A
VAL
115
A
VAL
115
16
1_555
A
TYR
121
A
TYR
121
16
1_555
A
THR
136
A
THR
136
16
1_555
B
ILE
7
B
ILE
7
17
1_555
B
VAL
8
B
VAL
8
17
1_555
B
ALA
9
B
ALA
9
17
1_555
B
GLU
30
B
GLU
30
17
1_555
B
PHE
31
B
PHE
31
17
1_555
B
ARG
32
B
ARG
32
17
1_555
B
PHE
34
B
PHE
34
17
1_555
B
GLN
35
B
GLN
35
17
1_555
B
ASN
64
B
ASN
64
17
1_555
B
LEU
67
B
LEU
67
17
1_555
B
ARG
70
B
ARG
70
17
1_555
B
VAL
115
B
VAL
115
17
1_555
B
TYR
121
B
TYR
121
17
1_555
B
THR
136
B
THR
136
17
1_555
B
HOH
401
F
HOH
17
1_555
B
HOH
402
F
HOH
17
1_555
B
HOH
410
F
HOH
17
1_555
1
P 1