0.016058
0.000000
0.000000
0.000000
0.010706
0.000000
0.000000
0.000000
0.010218
0.00000
0.00000
0.00000
Sun, Y.
Olson, R.
Horning, M.
Armstrong, N.
Mayer, M.
Gouaux, E.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
8
90.00
90.00
90.00
62.276
93.408
97.866
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
C8 H2 N4 O6
250.125
6,7-DINITROQUINOXALINE-2,3-DIONE
DNQX
non-polymer
C5 H10 N2 O3
146.144
y
GLUTAMINE
L-peptide linking
C5 H9 N O4
147.129
y
GLUTAMIC ACID
L-peptide linking
C2 H5 N O2
75.067
y
GLYCINE
peptide linking
C6 H10 N3 O2 1
156.162
y
HISTIDINE
L-peptide linking
H2 O
18.015
WATER
non-polymer
C6 H13 N O2
131.173
y
ISOLEUCINE
L-peptide linking
C6 H13 N O2
131.173
y
LEUCINE
L-peptide linking
C6 H15 N2 O2 1
147.195
y
LYSINE
L-peptide linking
C5 H11 N O2 S
149.211
y
METHIONINE
L-peptide linking
C9 H11 N O2
165.189
y
PHENYLALANINE
L-peptide linking
C5 H9 N O2
115.130
y
PROLINE
L-peptide linking
C3 H7 N O3
105.093
y
SERINE
L-peptide linking
O4 S -2
96.063
SULFATE ION
non-polymer
C4 H9 N O3
119.119
y
THREONINE
L-peptide linking
C11 H12 N2 O2
204.225
y
TRYPTOPHAN
L-peptide linking
C9 H11 N O3
181.189
y
TYROSINE
L-peptide linking
C5 H11 N O2
117.146
y
VALINE
L-peptide linking
N
1
N
N
N
2
S
C
N
3
N
C
N
4
N
O
N
5
N
C
N
6
N
O
N
7
N
H
N
8
N
H
N
9
N
H
N
10
N
H
N
11
N
H
N
12
N
H
N
13
N
H
N
14
N
N
N
15
S
C
N
16
N
C
N
17
N
O
N
18
N
C
N
19
N
C
N
20
N
C
N
21
N
N
N
22
N
C
N
23
N
N
N
24
N
N
N
25
N
O
N
26
N
H
N
27
N
H
N
28
N
H
N
29
N
H
N
30
N
H
N
31
N
H
N
32
N
H
N
33
N
H
N
34
N
H
N
35
N
H
N
36
N
H
N
37
N
H
N
38
N
H
N
39
N
H
N
40
N
H
N
41
N
N
N
42
S
C
N
43
N
C
N
44
N
O
N
45
N
C
N
46
N
C
N
47
N
O
N
48
N
N
N
49
N
O
N
50
N
H
N
51
N
H
N
52
N
H
N
53
N
H
N
54
N
H
N
55
N
H
N
56
N
H
N
57
N
H
N
58
N
N
N
59
S
C
N
60
N
C
N
61
N
O
N
62
N
C
N
63
N
C
N
64
N
O
N
65
N
O
N
66
N
O
N
67
N
H
N
68
N
H
N
69
N
H
N
70
N
H
N
71
N
H
N
72
N
H
N
73
N
H
N
74
N
N
N
75
R
C
N
76
N
C
N
77
N
O
N
78
N
C
N
79
N
S
N
80
N
O
N
81
N
H
N
82
N
H
N
83
N
H
N
84
N
H
N
85
N
H
N
86
N
H
N
87
N
H
N
88
N
O
N
89
N
O
N
90
N
C
N
91
N
C
N
92
N
N
N
93
N
N
Y
94
N
C
Y
95
N
C
Y
96
N
C
Y
97
N
C
Y
98
N
C
Y
99
N
C
N
100
N
N
N
101
N
N
N
102
N
O
N
103
N
O
N
104
N
O
N
105
N
O
N
106
N
H
N
107
N
H
N
108
N
N
N
109
S
C
N
110
N
C
N
111
N
O
N
112
N
C
N
113
N
C
N
114
N
C
N
115
N
O
N
116
N
N
N
117
N
O
N
118
N
H
N
119
N
H
N
120
N
H
N
121
N
H
N
122
N
H
N
123
N
H
N
124
N
H
N
125
N
H
N
126
N
H
N
127
N
H
N
128
N
N
N
129
S
C
N
130
N
C
N
131
N
O
N
132
N
C
N
133
N
C
N
134
N
C
N
135
N
O
N
136
N
O
N
137
N
O
N
138
N
H
N
139
N
H
N
140
N
H
N
141
N
H
N
142
N
H
N
143
N
H
N
144
N
H
N
145
N
H
N
146
N
H
N
147
N
N
N
148
N
C
N
149
N
C
N
150
N
O
N
151
N
O
N
152
N
H
N
153
N
H
N
154
N
H
N
155
N
H
N
156
N
H
N
157
N
N
N
158
S
C
N
159
N
C
N
160
N
O
N
161
N
C
Y
162
N
C
Y
163
N
N
Y
164
N
C
Y
165
N
C
Y
166
N
N
N
167
N
O
N
168
N
H
N
169
N
H
N
170
N
H
N
171
N
H
N
172
N
H
N
173
N
H
N
174
N
H
N
175
N
H
N
176
N
H
N
177
N
H
N
178
N
O
N
179
N
H
N
180
N
H
N
181
N
N
N
182
S
C
N
183
N
C
N
184
N
O
N
185
S
C
N
186
N
C
N
187
N
C
N
188
N
C
N
189
N
O
N
190
N
H
N
191
N
H
N
192
N
H
N
193
N
H
N
194
N
H
N
195
N
H
N
196
N
H
N
197
N
H
N
198
N
H
N
199
N
H
N
200
N
H
N
201
N
H
N
202
N
H
N
203
N
N
N
204
S
C
N
205
N
C
N
206
N
O
N
207
N
C
N
208
N
C
N
209
N
C
N
210
N
C
N
211
N
O
N
212
N
H
N
213
N
H
N
214
N
H
N
215
N
H
N
216
N
H
N
217
N
H
N
218
N
H
N
219
N
H
N
220
N
H
N
221
N
H
N
222
N
H
N
223
N
H
N
224
N
H
N
225
N
N
N
226
S
C
N
227
N
C
N
228
N
O
N
229
N
C
N
230
N
C
N
231
N
C
N
232
N
C
N
233
N
N
N
234
N
O
N
235
N
H
N
236
N
H
N
237
N
H
N
238
N
H
N
239
N
H
N
240
N
H
N
241
N
H
N
242
N
H
N
243
N
H
N
244
N
H
N
245
N
H
N
246
N
H
N
247
N
H
N
248
N
H
N
249
N
H
N
250
N
N
N
251
S
C
N
252
N
C
N
253
N
O
N
254
N
C
N
255
N
C
N
256
N
S
N
257
N
C
N
258
N
O
N
259
N
H
N
260
N
H
N
261
N
H
N
262
N
H
N
263
N
H
N
264
N
H
N
265
N
H
N
266
N
H
N
267
N
H
N
268
N
H
N
269
N
H
N
270
N
N
N
271
S
C
N
272
N
C
N
273
N
O
N
274
N
C
Y
275
N
C
Y
276
N
C
Y
277
N
C
Y
278
N
C
Y
279
N
C
Y
280
N
C
N
281
N
O
N
282
N
H
N
283
N
H
N
284
N
H
N
285
N
H
N
286
N
H
N
287
N
H
N
288
N
H
N
289
N
H
N
290
N
H
N
291
N
H
N
292
N
H
N
293
N
N
N
294
S
C
N
295
N
C
N
296
N
O
N
297
N
C
N
298
N
C
N
299
N
C
N
300
N
O
N
301
N
H
N
302
N
H
N
303
N
H
N
304
N
H
N
305
N
H
N
306
N
H
N
307
N
H
N
308
N
H
N
309
N
H
N
310
N
N
N
311
S
C
N
312
N
C
N
313
N
O
N
314
N
C
N
315
N
O
N
316
N
O
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
S
N
325
N
O
N
326
N
O
N
327
N
O
N
328
N
O
N
329
N
N
N
330
S
C
N
331
N
C
N
332
N
O
N
333
R
C
N
334
N
O
N
335
N
C
N
336
N
O
N
337
N
H
N
338
N
H
N
339
N
H
N
340
N
H
N
341
N
H
N
342
N
H
N
343
N
H
N
344
N
H
N
345
N
H
N
346
N
N
N
347
S
C
N
348
N
C
N
349
N
O
N
350
N
C
Y
351
N
C
Y
352
N
C
Y
353
N
C
Y
354
N
N
Y
355
N
C
Y
356
N
C
Y
357
N
C
Y
358
N
C
Y
359
N
C
N
360
N
O
N
361
N
H
N
362
N
H
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
H
N
373
N
N
N
374
S
C
N
375
N
C
N
376
N
O
N
377
N
C
Y
378
N
C
Y
379
N
C
Y
380
N
C
Y
381
N
C
Y
382
N
C
Y
383
N
C
N
384
N
O
N
385
N
O
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
N
N
398
S
C
N
399
N
C
N
400
N
O
N
401
N
C
N
402
N
C
N
403
N
C
N
404
N
O
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
H
N
412
N
H
N
413
N
H
N
414
N
H
N
415
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
doub
N
84
N
doub
N
85
N
sing
N
86
N
sing
N
87
N
sing
N
88
N
doub
N
89
N
doub
Y
90
N
sing
Y
91
N
sing
Y
92
N
sing
Y
93
N
doub
N
94
N
sing
Y
95
N
doub
N
96
N
sing
Y
97
N
sing
N
98
N
sing
N
99
N
sing
N
100
N
sing
N
101
N
doub
N
102
N
sing
N
103
N
doub
N
104
N
sing
N
105
N
sing
N
106
N
sing
N
107
N
sing
N
108
N
sing
N
109
N
sing
N
110
N
doub
N
111
N
sing
N
112
N
sing
N
113
N
sing
N
114
N
sing
N
115
N
sing
N
116
N
sing
N
117
N
sing
N
118
N
doub
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
doub
N
130
N
sing
N
131
N
sing
N
132
N
sing
N
133
N
sing
N
134
N
sing
N
135
N
sing
N
136
N
sing
N
137
N
doub
N
138
N
sing
N
139
N
sing
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
doub
N
157
N
sing
N
158
N
sing
N
159
N
sing
N
160
N
sing
Y
161
N
sing
Y
162
N
doub
Y
163
N
doub
N
164
N
sing
Y
165
N
sing
N
166
N
sing
Y
167
N
sing
N
168
N
sing
N
169
N
sing
N
170
N
sing
N
171
N
sing
N
172
N
sing
N
173
N
sing
N
174
N
sing
N
175
N
sing
N
176
N
sing
N
177
N
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
sing
N
189
N
sing
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
doub
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
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
doub
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
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
doub
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
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
doub
N
265
N
sing
N
266
N
sing
N
267
N
sing
N
268
N
sing
Y
269
N
doub
Y
270
N
sing
Y
271
N
sing
N
272
N
sing
Y
273
N
doub
N
274
N
sing
Y
275
N
doub
N
276
N
sing
Y
277
N
sing
N
278
N
sing
N
279
N
sing
N
280
N
sing
N
281
N
sing
N
282
N
sing
N
283
N
sing
N
284
N
sing
N
285
N
sing
N
286
N
sing
N
287
N
doub
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
sing
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
doub
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
doub
N
312
N
doub
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
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
doub
N
338
N
sing
N
339
N
sing
N
340
N
sing
N
341
N
sing
Y
342
N
doub
Y
343
N
sing
Y
344
N
sing
N
345
N
sing
Y
346
N
doub
Y
347
N
sing
Y
348
N
sing
N
349
N
sing
Y
350
N
sing
Y
351
N
doub
N
352
N
sing
Y
353
N
doub
N
354
N
sing
Y
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
N
375
N
sing
Y
376
N
doub
N
377
N
sing
Y
378
N
sing
N
379
N
sing
N
380
N
sing
N
381
N
sing
N
382
N
sing
N
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
doub
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
sing
N
399
N
sing
N
400
N
sing
UK
Nature
NATUAS
0006
0028-0836
417
245
253
10.1038/417245a
12015593
Mechanism of glutamate receptor desensitization.
2002
10.2210/pdb1lb9/pdb
pdb_00001lb9
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
110.0
1
IMAGE PLATE
2001-04-03
RIGAKU RAXIS IV
SINGLE WAVELENGTH
M
x-ray
1
1.5418
1.0
1.5418
ROTATING ANODE
RIGAKU
29271.701
Glutamate receptor 2
ligand binding core (flop)
L483Y
2
man
polymer
250.125
6,7-DINITROQUINOXALINE-2,3-DIONE
2
syn
non-polymer
96.063
SULFATE ION
1
syn
non-polymer
18.015
water
183
nat
water
GLUR-2, GLUR-B, GLUR-K2, GLUTAMATE RECEPTOR IONOTROPIC AMPA 2
no
no
GANKTVVVTTILESPYVMMKKNHEMLEGNERYEGYCVDLAAEIAKHCGFKYKLTIVGDGKYGARDADTKIWNGMVGELVY
GKADIAIAPLTITYVREEVIDFSKPFMSLGISIMIKKGTPIESAEDLSKQTEIAYGTLDSGSTKEFFRRSKIAVFDKMWT
YMRSAEPSVFVRTTAEGVARVRKSKGKYAYLLESTMNEYIEQRKPCDTMKVGGNLDSKGYGIATPKGSSLGNAVNLAVLK
LNEQGLLDKLKNKWWYDKGECGS
GANKTVVVTTILESPYVMMKKNHEMLEGNERYEGYCVDLAAEIAKHCGFKYKLTIVGDGKYGARDADTKIWNGMVGELVY
GKADIAIAPLTITYVREEVIDFSKPFMSLGISIMIKKGTPIESAEDLSKQTEIAYGTLDSGSTKEFFRRSKIAVFDKMWT
YMRSAEPSVFVRTTAEGVARVRKSKGKYAYLLESTMNEYIEQRKPCDTMKVGGNLDSKGYGIATPKGSSLGNAVNLAVLK
LNEQGLLDKLKNKWWYDKGECGS
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
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
Norway rat
Rattus
Escherichia
Escherichia coli
sample
3
117
GluR-2
10116
Rattus norvegicus
469008
Escherichia coli BL21(DE3)
BL21(DE3)
plasmid
pETGQ
Norway rat
Rattus
Escherichia
Escherichia coli
sample
120
263
GluR-2
10116
Rattus norvegicus
469008
Escherichia coli BL21(DE3)
BL21(DE3)
plasmid
pETGQ
1
2.43
49.39
VAPOR DIFFUSION, HANGING DROP
5.0
PEG 4000, ammonium sulfate, sodium acetate, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 277.0K
277.0
entity_src_gen
software
database_2
struct_ref_seq_dif
struct_site
chem_comp_atom
chem_comp_bond
pdbx_initial_refinement_model
repository
Initial release
Version format compliance
Version format compliance
Refinement description
Source and taxonomy
Database references
Derived calculations
Data collection
Refinement description
1
0
2002-06-05
1
1
2008-04-28
1
2
2011-07-13
1
3
2017-08-16
1
4
2021-10-27
1
5
2023-08-16
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_struct_ref_seq_dif.details
_struct_site.pdbx_auth_asym_id
_struct_site.pdbx_auth_comp_id
_struct_site.pdbx_auth_seq_id
PDB-ID 1FTL contains the wild-type GluR2 ligand binding core (S1S2J) in complex with DNQX
Crystal structure of the Non-desensitizing GluR2 ligand binding core mutant (S1S2J-L483Y)in complex with AMPA at 2.3 resolution
Crystal structure of the GluR2 ligand binding domain mutant (S1S2J-N754D) in complex with kainate at 2.1 A resolution
Crystal structure of GluR2 ligand binding core (S1S2J-N754S) in complex with cyclothiazide (CTZ) as well as glutamate at 1.8 A resolution
Sequence
The native GLUR-2 is a membrane protein. The protein
crystallized by the author is the extracellular ligand
binding domain of GLUR-2. Transmembrane regions were
genetically removed and replaced with a Gly-Thr linker.
The sequence, as a result, matches discontinuously with
the reference database.
RCSB
Y
RCSB
2002-04-02
REL
DNQ
6,7-DINITROQUINOXALINE-2,3-DIONE
SO4
SULFATE ION
HOH
water
1FTL
PDB Entry 1FTL
PDB
experimental model
DNQ
2
2
DNQ
DNQ
368
A
SO4
366
3
SO4
SO4
366
B
DNQ
1
2
DNQ
DNQ
367
B
TIP
5
4
HOH
HOH
369
A
TIP
6
4
HOH
HOH
370
A
TIP
8
4
HOH
HOH
371
A
TIP
14
4
HOH
HOH
372
A
TIP
15
4
HOH
HOH
373
A
TIP
16
4
HOH
HOH
374
A
TIP
22
4
HOH
HOH
375
A
TIP
24
4
HOH
HOH
376
A
TIP
31
4
HOH
HOH
377
A
TIP
32
4
HOH
HOH
378
A
TIP
33
4
HOH
HOH
379
A
TIP
34
4
HOH
HOH
380
A
TIP
35
4
HOH
HOH
381
A
TIP
39
4
HOH
HOH
382
A
TIP
40
4
HOH
HOH
383
A
TIP
44
4
HOH
HOH
384
A
TIP
47
4
HOH
HOH
385
A
TIP
50
4
HOH
HOH
386
A
TIP
51
4
HOH
HOH
387
A
TIP
53
4
HOH
HOH
388
A
TIP
56
4
HOH
HOH
389
A
TIP
57
4
HOH
HOH
390
A
TIP
58
4
HOH
HOH
391
A
TIP
60
4
HOH
HOH
392
A
TIP
61
4
HOH
HOH
393
A
TIP
63
4
HOH
HOH
394
A
TIP
67
4
HOH
HOH
395
A
TIP
68
4
HOH
HOH
396
A
TIP
71
4
HOH
HOH
397
A
TIP
73
4
HOH
HOH
398
A
TIP
74
4
HOH
HOH
399
A
TIP
75
4
HOH
HOH
400
A
TIP
76
4
HOH
HOH
401
A
TIP
77
4
HOH
HOH
402
A
TIP
79
4
HOH
HOH
403
A
TIP
80
4
HOH
HOH
404
A
TIP
82
4
HOH
HOH
405
A
TIP
83
4
HOH
HOH
406
A
TIP
84
4
HOH
HOH
407
A
TIP
85
4
HOH
HOH
408
A
TIP
86
4
HOH
HOH
409
A
TIP
87
4
HOH
HOH
410
A
TIP
89
4
HOH
HOH
411
A
TIP
92
4
HOH
HOH
412
A
TIP
94
4
HOH
HOH
413
A
TIP
97
4
HOH
HOH
414
A
TIP
101
4
HOH
HOH
415
A
TIP
103
4
HOH
HOH
416
A
TIP
104
4
HOH
HOH
417
A
TIP
112
4
HOH
HOH
418
A
TIP
113
4
HOH
HOH
419
A
TIP
114
4
HOH
HOH
420
A
TIP
115
4
HOH
HOH
421
A
TIP
116
4
HOH
HOH
422
A
TIP
121
4
HOH
HOH
423
A
TIP
123
4
HOH
HOH
424
A
TIP
125
4
HOH
HOH
425
A
TIP
126
4
HOH
HOH
426
A
TIP
128
4
HOH
HOH
427
A
TIP
131
4
HOH
HOH
428
A
TIP
135
4
HOH
HOH
429
A
TIP
137
4
HOH
HOH
430
A
TIP
139
4
HOH
HOH
431
A
TIP
140
4
HOH
HOH
432
A
TIP
144
4
HOH
HOH
433
A
TIP
145
4
HOH
HOH
434
A
TIP
146
4
HOH
HOH
435
A
TIP
147
4
HOH
HOH
436
A
TIP
148
4
HOH
HOH
437
A
TIP
153
4
HOH
HOH
438
A
TIP
154
4
HOH
HOH
439
A
TIP
156
4
HOH
HOH
440
A
TIP
157
4
HOH
HOH
441
A
TIP
161
4
HOH
HOH
442
A
TIP
162
4
HOH
HOH
443
A
TIP
163
4
HOH
HOH
444
A
TIP
164
4
HOH
HOH
445
A
TIP
166
4
HOH
HOH
446
A
TIP
167
4
HOH
HOH
447
A
TIP
169
4
HOH
HOH
448
A
TIP
170
4
HOH
HOH
449
A
TIP
171
4
HOH
HOH
450
A
TIP
172
4
HOH
HOH
451
A
TIP
173
4
HOH
HOH
452
A
TIP
174
4
HOH
HOH
453
A
TIP
176
4
HOH
HOH
454
A
TIP
177
4
HOH
HOH
455
A
TIP
179
4
HOH
HOH
456
A
TIP
180
4
HOH
HOH
457
A
TIP
181
4
HOH
HOH
458
A
TIP
182
4
HOH
HOH
459
A
TIP
1
4
HOH
HOH
368
B
TIP
2
4
HOH
HOH
369
B
TIP
3
4
HOH
HOH
370
B
TIP
4
4
HOH
HOH
371
B
TIP
7
4
HOH
HOH
372
B
TIP
9
4
HOH
HOH
373
B
TIP
10
4
HOH
HOH
374
B
TIP
11
4
HOH
HOH
375
B
TIP
12
4
HOH
HOH
376
B
TIP
13
4
HOH
HOH
377
B
TIP
17
4
HOH
HOH
378
B
TIP
18
4
HOH
HOH
379
B
TIP
19
4
HOH
HOH
380
B
TIP
20
4
HOH
HOH
381
B
TIP
21
4
HOH
HOH
382
B
TIP
23
4
HOH
HOH
383
B
TIP
25
4
HOH
HOH
384
B
TIP
26
4
HOH
HOH
385
B
TIP
27
4
HOH
HOH
386
B
TIP
28
4
HOH
HOH
387
B
TIP
29
4
HOH
HOH
388
B
TIP
30
4
HOH
HOH
389
B
TIP
36
4
HOH
HOH
390
B
TIP
37
4
HOH
HOH
391
B
TIP
38
4
HOH
HOH
392
B
TIP
41
4
HOH
HOH
393
B
TIP
42
4
HOH
HOH
394
B
TIP
43
4
HOH
HOH
395
B
TIP
45
4
HOH
HOH
396
B
TIP
46
4
HOH
HOH
397
B
TIP
48
4
HOH
HOH
398
B
TIP
49
4
HOH
HOH
399
B
TIP
52
4
HOH
HOH
400
B
TIP
54
4
HOH
HOH
401
B
TIP
55
4
HOH
HOH
402
B
TIP
59
4
HOH
HOH
403
B
TIP
62
4
HOH
HOH
404
B
TIP
64
4
HOH
HOH
405
B
TIP
65
4
HOH
HOH
406
B
TIP
66
4
HOH
HOH
407
B
TIP
69
4
HOH
HOH
408
B
TIP
70
4
HOH
HOH
409
B
TIP
72
4
HOH
HOH
410
B
TIP
78
4
HOH
HOH
411
B
TIP
81
4
HOH
HOH
412
B
TIP
88
4
HOH
HOH
413
B
TIP
90
4
HOH
HOH
414
B
TIP
91
4
HOH
HOH
415
B
TIP
93
4
HOH
HOH
416
B
TIP
95
4
HOH
HOH
417
B
TIP
96
4
HOH
HOH
418
B
TIP
98
4
HOH
HOH
419
B
TIP
99
4
HOH
HOH
420
B
TIP
100
4
HOH
HOH
421
B
TIP
102
4
HOH
HOH
422
B
TIP
105
4
HOH
HOH
423
B
TIP
106
4
HOH
HOH
424
B
TIP
107
4
HOH
HOH
425
B
TIP
108
4
HOH
HOH
426
B
TIP
109
4
HOH
HOH
427
B
TIP
110
4
HOH
HOH
428
B
TIP
111
4
HOH
HOH
429
B
TIP
117
4
HOH
HOH
430
B
TIP
118
4
HOH
HOH
431
B
TIP
119
4
HOH
HOH
432
B
TIP
120
4
HOH
HOH
433
B
TIP
122
4
HOH
HOH
434
B
TIP
124
4
HOH
HOH
435
B
TIP
127
4
HOH
HOH
436
B
TIP
129
4
HOH
HOH
437
B
TIP
130
4
HOH
HOH
438
B
TIP
132
4
HOH
HOH
439
B
TIP
133
4
HOH
HOH
440
B
TIP
134
4
HOH
HOH
441
B
TIP
136
4
HOH
HOH
442
B
TIP
138
4
HOH
HOH
443
B
TIP
141
4
HOH
HOH
444
B
TIP
142
4
HOH
HOH
445
B
TIP
143
4
HOH
HOH
446
B
TIP
149
4
HOH
HOH
447
B
TIP
150
4
HOH
HOH
448
B
TIP
151
4
HOH
HOH
449
B
TIP
152
4
HOH
HOH
450
B
TIP
155
4
HOH
HOH
451
B
TIP
158
4
HOH
HOH
452
B
TIP
159
4
HOH
HOH
453
B
TIP
160
4
HOH
HOH
454
B
TIP
165
4
HOH
HOH
455
B
TIP
168
4
HOH
HOH
456
B
TIP
175
4
HOH
HOH
457
B
TIP
178
4
HOH
HOH
458
B
TIP
183
4
HOH
HOH
459
B
n
1
1
A
n
2
2
A
n
3
3
A
n
4
4
A
THR
5
n
5
THR
5
A
VAL
6
n
6
VAL
6
A
VAL
7
n
7
VAL
7
A
VAL
8
n
8
VAL
8
A
THR
9
n
9
THR
9
A
THR
10
n
10
THR
10
A
ILE
11
n
11
ILE
11
A
LEU
12
n
12
LEU
12
A
GLU
13
n
13
GLU
13
A
SER
14
n
14
SER
14
A
PRO
15
n
15
PRO
15
A
TYR
16
n
16
TYR
16
A
VAL
17
n
17
VAL
17
A
MET
18
n
18
MET
18
A
MET
19
n
19
MET
19
A
LYS
20
n
20
LYS
20
A
SER
21
n
21
LYS
21
A
ASN
22
n
22
ASN
22
A
HIS
23
n
23
HIS
23
A
GLU
24
n
24
GLU
24
A
MET
25
n
25
MET
25
A
LEU
26
n
26
LEU
26
A
GLU
27
n
27
GLU
27
A
GLY
28
n
28
GLY
28
A
ASN
29
n
29
ASN
29
A
GLU
30
n
30
GLU
30
A
ARG
31
n
31
ARG
31
A
TYR
32
n
32
TYR
32
A
GLU
33
n
33
GLU
33
A
GLY
34
n
34
GLY
34
A
TYR
35
n
35
TYR
35
A
CYS
36
n
36
CYS
36
A
VAL
37
n
37
VAL
37
A
ASP
38
n
38
ASP
38
A
LEU
39
n
39
LEU
39
A
ALA
40
n
40
ALA
40
A
ALA
41
n
41
ALA
41
A
GLU
42
n
42
GLU
42
A
ILE
43
n
43
ILE
43
A
ALA
44
n
44
ALA
44
A
LYS
45
n
45
LYS
45
A
HIS
46
n
46
HIS
46
A
CYS
47
n
47
CYS
47
A
GLY
48
n
48
GLY
48
A
PHE
49
n
49
PHE
49
A
LYS
50
n
50
LYS
50
A
TYR
51
n
51
TYR
51
A
SER
52
n
52
LYS
52
A
LEU
53
n
53
LEU
53
A
THR
54
n
54
THR
54
A
ILE
55
n
55
ILE
55
A
VAL
56
n
56
VAL
56
A
GLY
57
n
57
GLY
57
A
ASP
58
n
58
ASP
58
A
GLY
59
n
59
GLY
59
A
LYS
60
n
60
LYS
60
A
TYR
61
n
61
TYR
61
A
GLY
62
n
62
GLY
62
A
ALA
63
n
63
ALA
63
A
ARG
64
n
64
ARG
64
A
ASP
65
n
65
ASP
65
A
ALA
66
n
66
ALA
66
A
ASP
67
n
67
ASP
67
A
THR
68
n
68
THR
68
A
LYS
69
n
69
LYS
69
A
ILE
70
n
70
ILE
70
A
TRP
71
n
71
TRP
71
A
ASN
72
n
72
ASN
72
A
GLY
73
n
73
GLY
73
A
MET
74
n
74
MET
74
A
VAL
75
n
75
VAL
75
A
GLY
76
n
76
GLY
76
A
GLU
77
n
77
GLU
77
A
LEU
78
n
78
LEU
78
A
VAL
79
n
79
VAL
79
A
TYR
80
n
80
TYR
80
A
GLY
81
n
81
GLY
81
A
LYS
82
n
82
LYS
82
A
ALA
83
n
83
ALA
83
A
ASP
84
n
84
ASP
84
A
ILE
85
n
85
ILE
85
A
ALA
86
n
86
ALA
86
A
ILE
87
n
87
ILE
87
A
ALA
88
n
88
ALA
88
A
PRO
89
n
89
PRO
89
A
LEU
90
n
90
LEU
90
A
THR
91
n
91
THR
91
A
ILE
92
n
92
ILE
92
A
THR
93
n
93
THR
93
A
TYR
94
n
94
TYR
94
A
VAL
95
n
95
VAL
95
A
ARG
96
n
96
ARG
96
A
GLU
97
n
97
GLU
97
A
GLU
98
n
98
GLU
98
A
VAL
99
n
99
VAL
99
A
ILE
100
n
100
ILE
100
A
ASP
101
n
101
ASP
101
A
PHE
102
n
102
PHE
102
A
SER
103
n
103
SER
103
A
LYS
104
n
104
LYS
104
A
PRO
105
n
105
PRO
105
A
PHE
106
n
106
PHE
106
A
MET
107
n
107
MET
107
A
SER
108
n
108
SER
108
A
LEU
109
n
109
LEU
109
A
GLY
110
n
110
GLY
110
A
ILE
111
n
111
ILE
111
A
SER
112
n
112
SER
112
A
ILE
113
n
113
ILE
113
A
MET
114
n
114
MET
114
A
ILE
115
n
115
ILE
115
A
LYS
116
n
116
LYS
116
A
LYS
117
n
117
LYS
117
A
GLY
118
n
118
GLY
118
A
THR
119
n
119
THR
119
A
PRO
120
n
120
PRO
120
A
ILE
121
n
121
ILE
121
A
GLU
122
n
122
GLU
122
A
SER
123
n
123
SER
123
A
ALA
124
n
124
ALA
124
A
GLU
125
n
125
GLU
125
A
ASP
126
n
126
ASP
126
A
LEU
127
n
127
LEU
127
A
SER
128
n
128
SER
128
A
ALA
129
n
129
LYS
129
A
GLN
130
n
130
GLN
130
A
THR
131
n
131
THR
131
A
ALA
132
n
132
GLU
132
A
ILE
133
n
133
ILE
133
A
ALA
134
n
134
ALA
134
A
TYR
135
n
135
TYR
135
A
GLY
136
n
136
GLY
136
A
THR
137
n
137
THR
137
A
LEU
138
n
138
LEU
138
A
ASP
139
n
139
ASP
139
A
SER
140
n
140
SER
140
A
GLY
141
n
141
GLY
141
A
SER
142
n
142
SER
142
A
THR
143
n
143
THR
143
A
LYS
144
n
144
LYS
144
A
GLU
145
n
145
GLU
145
A
PHE
146
n
146
PHE
146
A
PHE
147
n
147
PHE
147
A
ARG
148
n
148
ARG
148
A
ALA
149
n
149
ARG
149
A
SER
150
n
150
SER
150
A
LYS
151
n
151
LYS
151
A
ILE
152
n
152
ILE
152
A
ALA
153
n
153
ALA
153
A
VAL
154
n
154
VAL
154
A
PHE
155
n
155
PHE
155
A
ASP
156
n
156
ASP
156
A
LYS
157
n
157
LYS
157
A
MET
158
n
158
MET
158
A
TRP
159
n
159
TRP
159
A
THR
160
n
160
THR
160
A
TYR
161
n
161
TYR
161
A
MET
162
n
162
MET
162
A
ARG
163
n
163
ARG
163
A
SER
164
n
164
SER
164
A
ALA
165
n
165
ALA
165
A
GLU
166
n
166
GLU
166
A
PRO
167
n
167
PRO
167
A
SER
168
n
168
SER
168
A
VAL
169
n
169
VAL
169
A
PHE
170
n
170
PHE
170
A
VAL
171
n
171
VAL
171
A
ARG
172
n
172
ARG
172
A
THR
173
n
173
THR
173
A
THR
174
n
174
THR
174
A
ALA
175
n
175
ALA
175
A
GLU
176
n
176
GLU
176
A
GLY
177
n
177
GLY
177
A
VAL
178
n
178
VAL
178
A
ALA
179
n
179
ALA
179
A
ARG
180
n
180
ARG
180
A
VAL
181
n
181
VAL
181
A
ARG
182
n
182
ARG
182
A
LYS
183
n
183
LYS
183
A
SER
184
n
184
SER
184
A
LYS
185
n
185
LYS
185
A
GLY
186
n
186
GLY
186
A
LYS
187
n
187
LYS
187
A
TYR
188
n
188
TYR
188
A
ALA
189
n
189
ALA
189
A
TYR
190
n
190
TYR
190
A
LEU
191
n
191
LEU
191
A
LEU
192
n
192
LEU
192
A
GLU
193
n
193
GLU
193
A
SER
194
n
194
SER
194
A
THR
195
n
195
THR
195
A
MET
196
n
196
MET
196
A
ASN
197
n
197
ASN
197
A
GLU
198
n
198
GLU
198
A
TYR
199
n
199
TYR
199
A
ILE
200
n
200
ILE
200
A
GLU
201
n
201
GLU
201
A
GLN
202
n
202
GLN
202
A
ARG
203
n
203
ARG
203
A
LYS
204
n
204
LYS
204
A
PRO
205
n
205
PRO
205
A
CYS
206
n
206
CYS
206
A
ASP
207
n
207
ASP
207
A
THR
208
n
208
THR
208
A
MET
209
n
209
MET
209
A
LYS
210
n
210
LYS
210
A
VAL
211
n
211
VAL
211
A
GLY
212
n
212
GLY
212
A
GLY
213
n
213
GLY
213
A
ASN
214
n
214
ASN
214
A
LEU
215
n
215
LEU
215
A
ASP
216
n
216
ASP
216
A
SER
217
n
217
SER
217
A
LYS
218
n
218
LYS
218
A
GLY
219
n
219
GLY
219
A
TYR
220
n
220
TYR
220
A
GLY
221
n
221
GLY
221
A
ILE
222
n
222
ILE
222
A
ALA
223
n
223
ALA
223
A
THR
224
n
224
THR
224
A
PRO
225
n
225
PRO
225
A
LYS
226
n
226
LYS
226
A
GLY
227
n
227
GLY
227
A
SER
228
n
228
SER
228
A
SER
229
n
229
SER
229
A
LEU
230
n
230
LEU
230
A
GLY
231
n
231
GLY
231
A
ASN
232
n
232
ASN
232
A
ALA
233
n
233
ALA
233
A
VAL
234
n
234
VAL
234
A
ASN
235
n
235
ASN
235
A
LEU
236
n
236
LEU
236
A
ALA
237
n
237
ALA
237
A
VAL
238
n
238
VAL
238
A
LEU
239
n
239
LEU
239
A
LYS
240
n
240
LYS
240
A
LEU
241
n
241
LEU
241
A
ASN
242
n
242
ASN
242
A
GLU
243
n
243
GLU
243
A
GLN
244
n
244
GLN
244
A
GLY
245
n
245
GLY
245
A
LEU
246
n
246
LEU
246
A
LEU
247
n
247
LEU
247
A
ASP
248
n
248
ASP
248
A
LYS
249
n
249
LYS
249
A
LEU
250
n
250
LEU
250
A
LYS
251
n
251
LYS
251
A
ASN
252
n
252
ASN
252
A
LYS
253
n
253
LYS
253
A
TRP
254
n
254
TRP
254
A
TRP
255
n
255
TRP
255
A
TYR
256
n
256
TYR
256
A
ASP
257
n
257
ASP
257
A
LYS
258
n
258
LYS
258
A
GLY
259
n
259
GLY
259
A
GLU
260
n
260
GLU
260
A
CYS
261
n
261
CYS
261
A
n
262
262
A
n
263
263
A
n
1
1
B
n
2
2
B
n
3
3
B
n
4
4
B
THR
5
n
5
THR
5
B
VAL
6
n
6
VAL
6
B
VAL
7
n
7
VAL
7
B
VAL
8
n
8
VAL
8
B
THR
9
n
9
THR
9
B
THR
10
n
10
THR
10
B
ILE
11
n
11
ILE
11
B
LEU
12
n
12
LEU
12
B
GLU
13
n
13
GLU
13
B
SER
14
n
14
SER
14
B
PRO
15
n
15
PRO
15
B
TYR
16
n
16
TYR
16
B
VAL
17
n
17
VAL
17
B
MET
18
n
18
MET
18
B
MET
19
n
19
MET
19
B
LYS
20
n
20
LYS
20
B
ALA
21
n
21
LYS
21
B
ASN
22
n
22
ASN
22
B
HIS
23
n
23
HIS
23
B
GLU
24
n
24
GLU
24
B
MET
25
n
25
MET
25
B
LEU
26
n
26
LEU
26
B
GLU
27
n
27
GLU
27
B
GLY
28
n
28
GLY
28
B
ASN
29
n
29
ASN
29
B
GLU
30
n
30
GLU
30
B
ARG
31
n
31
ARG
31
B
TYR
32
n
32
TYR
32
B
GLU
33
n
33
GLU
33
B
GLY
34
n
34
GLY
34
B
TYR
35
n
35
TYR
35
B
CYS
36
n
36
CYS
36
B
VAL
37
n
37
VAL
37
B
ASP
38
n
38
ASP
38
B
LEU
39
n
39
LEU
39
B
ALA
40
n
40
ALA
40
B
ALA
41
n
41
ALA
41
B
GLU
42
n
42
GLU
42
B
ILE
43
n
43
ILE
43
B
ALA
44
n
44
ALA
44
B
LYS
45
n
45
LYS
45
B
HIS
46
n
46
HIS
46
B
CYS
47
n
47
CYS
47
B
GLY
48
n
48
GLY
48
B
PHE
49
n
49
PHE
49
B
SER
50
n
50
LYS
50
B
TYR
51
n
51
TYR
51
B
LYS
52
n
52
LYS
52
B
LEU
53
n
53
LEU
53
B
THR
54
n
54
THR
54
B
ILE
55
n
55
ILE
55
B
VAL
56
n
56
VAL
56
B
GLY
57
n
57
GLY
57
B
ASP
58
n
58
ASP
58
B
GLY
59
n
59
GLY
59
B
LYS
60
n
60
LYS
60
B
TYR
61
n
61
TYR
61
B
GLY
62
n
62
GLY
62
B
ALA
63
n
63
ALA
63
B
ARG
64
n
64
ARG
64
B
ASP
65
n
65
ASP
65
B
ALA
66
n
66
ALA
66
B
ASP
67
n
67
ASP
67
B
THR
68
n
68
THR
68
B
LYS
69
n
69
LYS
69
B
ILE
70
n
70
ILE
70
B
TRP
71
n
71
TRP
71
B
ASN
72
n
72
ASN
72
B
GLY
73
n
73
GLY
73
B
MET
74
n
74
MET
74
B
VAL
75
n
75
VAL
75
B
GLY
76
n
76
GLY
76
B
GLU
77
n
77
GLU
77
B
LEU
78
n
78
LEU
78
B
VAL
79
n
79
VAL
79
B
TYR
80
n
80
TYR
80
B
GLY
81
n
81
GLY
81
B
LYS
82
n
82
LYS
82
B
ALA
83
n
83
ALA
83
B
ASP
84
n
84
ASP
84
B
ILE
85
n
85
ILE
85
B
ALA
86
n
86
ALA
86
B
ILE
87
n
87
ILE
87
B
ALA
88
n
88
ALA
88
B
PRO
89
n
89
PRO
89
B
LEU
90
n
90
LEU
90
B
THR
91
n
91
THR
91
B
ILE
92
n
92
ILE
92
B
THR
93
n
93
THR
93
B
TYR
94
n
94
TYR
94
B
VAL
95
n
95
VAL
95
B
ARG
96
n
96
ARG
96
B
GLU
97
n
97
GLU
97
B
GLU
98
n
98
GLU
98
B
VAL
99
n
99
VAL
99
B
ILE
100
n
100
ILE
100
B
ASP
101
n
101
ASP
101
B
PHE
102
n
102
PHE
102
B
SER
103
n
103
SER
103
B
LYS
104
n
104
LYS
104
B
PRO
105
n
105
PRO
105
B
PHE
106
n
106
PHE
106
B
MET
107
n
107
MET
107
B
SER
108
n
108
SER
108
B
LEU
109
n
109
LEU
109
B
GLY
110
n
110
GLY
110
B
ILE
111
n
111
ILE
111
B
SER
112
n
112
SER
112
B
ILE
113
n
113
ILE
113
B
MET
114
n
114
MET
114
B
ILE
115
n
115
ILE
115
B
LYS
116
n
116
LYS
116
B
LYS
117
n
117
LYS
117
B
GLY
118
n
118
GLY
118
B
THR
119
n
119
THR
119
B
PRO
120
n
120
PRO
120
B
ILE
121
n
121
ILE
121
B
GLU
122
n
122
GLU
122
B
SER
123
n
123
SER
123
B
ALA
124
n
124
ALA
124
B
GLU
125
n
125
GLU
125
B
ASP
126
n
126
ASP
126
B
LEU
127
n
127
LEU
127
B
SER
128
n
128
SER
128
B
LYS
129
n
129
LYS
129
B
GLN
130
n
130
GLN
130
B
THR
131
n
131
THR
131
B
GLU
132
n
132
GLU
132
B
ILE
133
n
133
ILE
133
B
ALA
134
n
134
ALA
134
B
TYR
135
n
135
TYR
135
B
GLY
136
n
136
GLY
136
B
THR
137
n
137
THR
137
B
LEU
138
n
138
LEU
138
B
ASP
139
n
139
ASP
139
B
SER
140
n
140
SER
140
B
GLY
141
n
141
GLY
141
B
SER
142
n
142
SER
142
B
THR
143
n
143
THR
143
B
LYS
144
n
144
LYS
144
B
GLU
145
n
145
GLU
145
B
PHE
146
n
146
PHE
146
B
PHE
147
n
147
PHE
147
B
ARG
148
n
148
ARG
148
B
ALA
149
n
149
ARG
149
B
SER
150
n
150
SER
150
B
ALA
151
n
151
LYS
151
B
ILE
152
n
152
ILE
152
B
ALA
153
n
153
ALA
153
B
VAL
154
n
154
VAL
154
B
PHE
155
n
155
PHE
155
B
ASP
156
n
156
ASP
156
B
LYS
157
n
157
LYS
157
B
MET
158
n
158
MET
158
B
TRP
159
n
159
TRP
159
B
THR
160
n
160
THR
160
B
TYR
161
n
161
TYR
161
B
MET
162
n
162
MET
162
B
ARG
163
n
163
ARG
163
B
SER
164
n
164
SER
164
B
ALA
165
n
165
ALA
165
B
GLU
166
n
166
GLU
166
B
PRO
167
n
167
PRO
167
B
SER
168
n
168
SER
168
B
VAL
169
n
169
VAL
169
B
PHE
170
n
170
PHE
170
B
VAL
171
n
171
VAL
171
B
ARG
172
n
172
ARG
172
B
THR
173
n
173
THR
173
B
THR
174
n
174
THR
174
B
ALA
175
n
175
ALA
175
B
GLU
176
n
176
GLU
176
B
GLY
177
n
177
GLY
177
B
VAL
178
n
178
VAL
178
B
ALA
179
n
179
ALA
179
B
ARG
180
n
180
ARG
180
B
VAL
181
n
181
VAL
181
B
ARG
182
n
182
ARG
182
B
LYS
183
n
183
LYS
183
B
SER
184
n
184
SER
184
B
LYS
185
n
185
LYS
185
B
GLY
186
n
186
GLY
186
B
LYS
187
n
187
LYS
187
B
TYR
188
n
188
TYR
188
B
ALA
189
n
189
ALA
189
B
TYR
190
n
190
TYR
190
B
LEU
191
n
191
LEU
191
B
LEU
192
n
192
LEU
192
B
GLU
193
n
193
GLU
193
B
SER
194
n
194
SER
194
B
THR
195
n
195
THR
195
B
MET
196
n
196
MET
196
B
ASN
197
n
197
ASN
197
B
GLU
198
n
198
GLU
198
B
TYR
199
n
199
TYR
199
B
ILE
200
n
200
ILE
200
B
GLU
201
n
201
GLU
201
B
GLN
202
n
202
GLN
202
B
ARG
203
n
203
ARG
203
B
ALA
204
n
204
LYS
204
B
PRO
205
n
205
PRO
205
B
CYS
206
n
206
CYS
206
B
ASP
207
n
207
ASP
207
B
THR
208
n
208
THR
208
B
MET
209
n
209
MET
209
B
LYS
210
n
210
LYS
210
B
VAL
211
n
211
VAL
211
B
GLY
212
n
212
GLY
212
B
GLY
213
n
213
GLY
213
B
ASN
214
n
214
ASN
214
B
LEU
215
n
215
LEU
215
B
ASP
216
n
216
ASP
216
B
SER
217
n
217
SER
217
B
LYS
218
n
218
LYS
218
B
GLY
219
n
219
GLY
219
B
TYR
220
n
220
TYR
220
B
GLY
221
n
221
GLY
221
B
VAL
222
n
222
ILE
222
B
ALA
223
n
223
ALA
223
B
THR
224
n
224
THR
224
B
PRO
225
n
225
PRO
225
B
LYS
226
n
226
LYS
226
B
GLY
227
n
227
GLY
227
B
SER
228
n
228
SER
228
B
SER
229
n
229
SER
229
B
LEU
230
n
230
LEU
230
B
GLY
231
n
231
GLY
231
B
ASN
232
n
232
ASN
232
B
ALA
233
n
233
ALA
233
B
VAL
234
n
234
VAL
234
B
ASN
235
n
235
ASN
235
B
LEU
236
n
236
LEU
236
B
ALA
237
n
237
ALA
237
B
VAL
238
n
238
VAL
238
B
LEU
239
n
239
LEU
239
B
LYS
240
n
240
LYS
240
B
LEU
241
n
241
LEU
241
B
ASN
242
n
242
ASN
242
B
GLU
243
n
243
GLU
243
B
GLN
244
n
244
GLN
244
B
GLY
245
n
245
GLY
245
B
LEU
246
n
246
LEU
246
B
LEU
247
n
247
LEU
247
B
ASP
248
n
248
ASP
248
B
LYS
249
n
249
LYS
249
B
LEU
250
n
250
LEU
250
B
LYS
251
n
251
LYS
251
B
ASN
252
n
252
ASN
252
B
LYS
253
n
253
LYS
253
B
TRP
254
n
254
TRP
254
B
TRP
255
n
255
TRP
255
B
TYR
256
n
256
TYR
256
B
ASP
257
n
257
ASP
257
B
LYS
258
n
258
LYS
258
B
GLY
259
n
259
GLY
259
B
GLU
260
n
260
GLU
260
B
CYS
261
n
261
CYS
261
B
n
262
262
B
n
263
263
B
author_defined_assembly
1
monomeric
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
THR
54
A
O
THR
54
A
N
VAL
8
A
N
VAL
8
A
N
THR
9
A
N
THR
9
A
O
ILE
85
A
O
ILE
85
A
N
MET
18
A
N
MET
18
A
O
GLU
33
A
O
GLU
33
A
N
ASP
101
A
N
ASP
101
A
O
THR
224
A
O
THR
224
A
N
LEU
109
A
N
LEU
109
A
O
LYS
218
A
O
LYS
218
A
N
GLY
136
A
N
GLY
136
A
O
LEU
191
A
O
LEU
191
A
O
TYR
190
A
O
TYR
190
A
N
MET
114
A
N
MET
114
A
N
ILE
115
A
N
ILE
115
A
O
MET
209
A
O
MET
209
B
O
LYS
52
B
O
LYS
52
B
N
VAL
6
B
N
VAL
6
B
N
THR
9
B
N
THR
9
B
O
ILE
85
B
O
ILE
85
B
N
MET
18
B
N
MET
18
B
O
GLU
33
B
O
GLU
33
B
N
ASP
101
B
N
ASP
101
B
O
THR
224
B
O
THR
224
B
N
MET
107
B
N
MET
107
B
O
TYR
220
B
O
TYR
220
B
N
GLY
136
B
N
GLY
136
B
O
LEU
191
B
O
LEU
191
B
O
TYR
190
B
O
TYR
190
B
N
MET
114
B
N
MET
114
B
N
ILE
115
B
N
ILE
115
B
O
MET
209
B
O
MET
209
1
A
CD
LYS
21
A
CD
LYS
21
1
Y
1
A
CE
LYS
21
A
CE
LYS
21
1
Y
1
A
NZ
LYS
21
A
NZ
LYS
21
1
Y
1
A
CD
LYS
52
A
CD
LYS
52
1
Y
1
A
CE
LYS
52
A
CE
LYS
52
1
Y
1
A
NZ
LYS
52
A
NZ
LYS
52
1
Y
1
A
CG
LYS
129
A
CG
LYS
129
1
Y
1
A
CD
LYS
129
A
CD
LYS
129
1
Y
1
A
CE
LYS
129
A
CE
LYS
129
1
Y
1
A
NZ
LYS
129
A
NZ
LYS
129
1
Y
1
A
CG
GLU
132
A
CG
GLU
132
1
Y
1
A
CD
GLU
132
A
CD
GLU
132
1
Y
1
A
OE1
GLU
132
A
OE1
GLU
132
1
Y
1
A
OE2
GLU
132
A
OE2
GLU
132
1
Y
1
A
CG
ARG
149
A
CG
ARG
149
1
Y
1
A
CD
ARG
149
A
CD
ARG
149
1
Y
1
A
NE
ARG
149
A
NE
ARG
149
1
Y
1
A
CZ
ARG
149
A
CZ
ARG
149
1
Y
1
A
NH1
ARG
149
A
NH1
ARG
149
1
Y
1
A
NH2
ARG
149
A
NH2
ARG
149
1
Y
1
B
CG
LYS
21
B
CG
LYS
21
1
Y
1
B
CD
LYS
21
B
CD
LYS
21
1
Y
1
B
CE
LYS
21
B
CE
LYS
21
1
Y
1
B
NZ
LYS
21
B
NZ
LYS
21
1
Y
1
B
CD
LYS
50
B
CD
LYS
50
1
Y
1
B
CE
LYS
50
B
CE
LYS
50
1
Y
1
B
NZ
LYS
50
B
NZ
LYS
50
1
Y
1
B
CG
ARG
149
B
CG
ARG
149
1
Y
1
B
CD
ARG
149
B
CD
ARG
149
1
Y
1
B
NE
ARG
149
B
NE
ARG
149
1
Y
1
B
CZ
ARG
149
B
CZ
ARG
149
1
Y
1
B
NH1
ARG
149
B
NH1
ARG
149
1
Y
1
B
NH2
ARG
149
B
NH2
ARG
149
1
Y
1
B
CG
LYS
151
B
CG
LYS
151
1
Y
1
B
CD
LYS
151
B
CD
LYS
151
1
Y
1
B
CE
LYS
151
B
CE
LYS
151
1
Y
1
B
NZ
LYS
151
B
NZ
LYS
151
1
Y
1
B
CG
LYS
204
B
CG
LYS
204
1
Y
1
B
CD
LYS
204
B
CD
LYS
204
1
Y
1
B
CE
LYS
204
B
CE
LYS
204
1
Y
1
B
NZ
LYS
204
B
NZ
LYS
204
1
Y
1
B
CD1
ILE
222
B
CD1
ILE
222
1
Y
1
A
GLY
1
A
GLY
1
1
Y
1
A
ALA
2
A
ALA
2
1
Y
1
A
ASN
3
A
ASN
3
1
Y
1
A
LYS
4
A
LYS
4
1
Y
1
A
GLY
262
A
GLY
262
1
Y
1
A
SER
263
A
SER
263
1
Y
1
B
GLY
1
B
GLY
1
1
Y
1
B
ALA
2
B
ALA
2
1
Y
1
B
ASN
3
B
ASN
3
1
Y
1
B
LYS
4
B
LYS
4
1
Y
1
B
GLY
262
B
GLY
262
1
Y
1
B
SER
263
B
SER
263
1
Y
1
A
ALA
88
-170.51
-179.18
1
A
ASP
139
-63.17
3.00
1
B
PRO
205
-78.22
22.28
PROTEIN_REP.PARAM
PROTEIN.TOP
WATER_REP.PARAM
WATER.TOP
NQX.PARAM
DNQX.TOP
ION.PARAM
ION.TOP
16.3
-3.49
0.00
0.00
3.37
0.00
0.12
0.268
0.005
0.22
2.30
19.96
2389
24109
24109
9.9
92.7
RANDOM
1281596.00
1281596.00
0.000000
1
RESTRAINED
THROUGHOUT
0.0
MOLECULAR REPLACEMENT
PDB Entry 1FTL
Engh & Huber
FLAT MODEL
18.2783
0.352512
0.36
0.28
5.00
0.31
0.18
2.30
19.96
183
4208
41
0
3984
0.006
1.2
22.1
0.76
0.32
0.017
0.231
2.44
357
3122
6
10.3
81.8
16.5
2.3
20
1LB9
24510
24510
-3.0
1
94
2.3
2.38
78
data reduction
DENZO
data scaling
SCALEPACK
phasing
AMoRE
refinement
CNS
1.0
Crystal structure of the Non-desensitizing GluR2 ligand binding core mutant (S1S2J-L483Y) in complex with antagonist DNQX at 2.3 A resolution
1
N
N
1
N
N
2
N
N
3
N
N
2
N
N
4
N
N
4
N
N
A
GLU
27
A
GLU
27
HELX_P
A
GLU
30
A
GLU
30
5
1
4
A
GLY
34
A
GLY
34
HELX_P
A
GLY
48
A
GLY
48
1
2
15
A
ASN
72
A
ASN
72
HELX_P
A
TYR
80
A
TYR
80
1
3
9
A
THR
93
A
THR
93
HELX_P
A
GLU
98
A
GLU
98
1
4
6
A
GLY
141
A
GLY
141
HELX_P
A
SER
150
A
SER
150
1
6
10
A
ILE
152
A
ILE
152
HELX_P
A
ALA
165
A
ALA
165
1
7
14
A
THR
173
A
THR
173
HELX_P
A
SER
184
A
SER
184
1
8
12
A
SER
194
A
SER
194
HELX_P
A
GLN
202
A
GLN
202
1
9
9
A
LEU
230
A
LEU
230
HELX_P
A
GLN
244
A
GLN
244
1
10
15
A
GLY
245
A
GLY
245
HELX_P
A
TYR
256
A
TYR
256
1
11
12
B
ASN
22
B
ASN
22
HELX_P
B
LEU
26
B
LEU
26
5
12
5
B
GLU
27
B
GLU
27
HELX_P
B
GLU
30
B
GLU
30
5
13
4
B
GLY
34
B
GLY
34
HELX_P
B
GLY
48
B
GLY
48
1
14
15
B
ASN
72
B
ASN
72
HELX_P
B
TYR
80
B
TYR
80
1
15
9
B
THR
93
B
THR
93
HELX_P
B
GLU
98
B
GLU
98
1
16
6
B
SER
123
B
SER
123
HELX_P
B
LYS
129
B
LYS
129
1
17
7
B
GLY
141
B
GLY
141
HELX_P
B
SER
150
B
SER
150
1
18
10
B
ILE
152
B
ILE
152
HELX_P
B
ARG
163
B
ARG
163
1
19
12
B
THR
173
B
THR
173
HELX_P
B
SER
184
B
SER
184
1
20
12
B
SER
194
B
SER
194
HELX_P
B
GLU
201
B
GLU
201
1
21
8
B
LEU
230
B
LEU
230
HELX_P
B
GLN
244
B
GLN
244
1
22
15
B
GLY
245
B
GLY
245
HELX_P
B
TYR
256
B
TYR
256
1
23
12
disulf
2.030
A
CYS
206
A
SG
CYS
206
1_555
A
CYS
261
A
SG
CYS
261
1_555
disulf
2.039
B
CYS
206
B
SG
CYS
206
1_555
B
CYS
261
B
SG
CYS
261
1_555
MEMBRANE PROTEIN
AMPA receptor, GluR2, S1S2, ligand-binding core, Non-desensitizing, point-mutation, L483Y, antagonist, DNQX, Membrane protein
A
SER
14
A
SER
14
1
A
PRO
15
A
PRO
15
0.13
A
GLU
166
A
GLU
166
1
A
PRO
167
A
PRO
167
-0.14
A
LYS
204
A
LYS
204
1
A
PRO
205
A
PRO
205
0.07
B
SER
14
B
SER
14
1
B
PRO
15
B
PRO
15
-0.21
B
GLU
166
B
GLU
166
1
B
PRO
167
B
PRO
167
-0.46
B
LYS
204
B
LYS
204
1
B
PRO
205
B
PRO
205
0.41
GRIA2_RAT
UNP
1
413
P19491
NKTVVVTTILESPYVMMKKNHEMLEGNERYEGYCVDLAAEIAKHCGFKYKLTIVGDGKYGARDADTKIWNGMVGELVYGK
ADIAIAPLTITLVREEVIDFSKPFMSLGISIMIKKPIESAEDLSKQTEIAYGTLDSGSTKEFFRRSKIAVFDKMWTYMRS
AEPSVFVRTTAEGVARVRKSKGKYAYLLESTMNEYIEQRKPCDTMKVGGNLDSKGYGIATPKGSSLGNAVNLAVLKLNEQ
GLLDKLKNKWWYDKGECGS
413
527
1LB9
3
117
P19491
A
1
3
117
653
796
1LB9
120
263
P19491
A
1
120
263
413
527
1LB9
3
117
P19491
B
1
3
117
653
796
1LB9
120
263
P19491
B
1
120
263
1
cloning artifact
GLY
1
1LB9
A
P19491
UNP
1
1
cloning artifact
ALA
2
1LB9
A
P19491
UNP
2
1
LEU
engineered mutation
TYR
94
1LB9
A
P19491
UNP
504
94
1
linker
GLY
118
1LB9
A
P19491
UNP
118
1
linker
THR
119
1LB9
A
P19491
UNP
119
3
cloning artifact
GLY
1
1LB9
B
P19491
UNP
1
3
cloning artifact
ALA
2
1LB9
B
P19491
UNP
2
3
LEU
engineered mutation
TYR
94
1LB9
B
P19491
UNP
504
94
3
linker
GLY
118
1LB9
B
P19491
UNP
118
3
linker
THR
119
1LB9
B
P19491
UNP
119
3
2
2
2
4
3
2
2
2
4
parallel
parallel
anti-parallel
anti-parallel
anti-parallel
parallel
anti-parallel
anti-parallel
parallel
parallel
anti-parallel
anti-parallel
anti-parallel
parallel
anti-parallel
anti-parallel
A
TYR
51
A
TYR
51
A
ILE
55
A
ILE
55
A
VAL
6
A
VAL
6
A
THR
10
A
THR
10
A
ILE
85
A
ILE
85
A
ALA
86
A
ALA
86
A
MET
18
A
MET
18
A
MET
19
A
MET
19
A
TYR
32
A
TYR
32
A
GLU
33
A
GLU
33
A
ILE
100
A
ILE
100
A
PHE
102
A
PHE
102
A
ALA
223
A
ALA
223
A
PRO
225
A
PRO
225
A
MET
107
A
MET
107
A
LEU
109
A
LEU
109
A
LYS
218
A
LYS
218
A
TYR
220
A
TYR
220
A
ALA
134
A
ALA
134
A
GLY
136
A
GLY
136
A
TYR
188
A
TYR
188
A
GLU
193
A
GLU
193
A
ILE
111
A
ILE
111
A
LYS
116
A
LYS
116
A
THR
208
A
THR
208
A
VAL
211
A
VAL
211
B
TYR
51
B
TYR
51
B
ILE
55
B
ILE
55
B
VAL
6
B
VAL
6
B
THR
10
B
THR
10
B
ILE
85
B
ILE
85
B
ALA
86
B
ALA
86
B
MET
18
B
MET
18
B
MET
19
B
MET
19
B
TYR
32
B
TYR
32
B
GLU
33
B
GLU
33
B
ILE
100
B
ILE
100
B
PHE
102
B
PHE
102
B
ALA
223
B
ALA
223
B
PRO
225
B
PRO
225
B
MET
107
B
MET
107
B
LEU
109
B
LEU
109
B
LYS
218
B
LYS
218
B
TYR
220
B
TYR
220
B
ALA
134
B
ALA
134
B
GLY
136
B
GLY
136
B
TYR
188
B
TYR
188
B
GLU
193
B
GLU
193
B
ILE
111
B
ILE
111
B
LYS
116
B
LYS
116
B
THR
208
B
THR
208
B
VAL
211
B
VAL
211
BINDING SITE FOR RESIDUE SO4 B 366
B
SO4
366
Software
4
BINDING SITE FOR RESIDUE DNQ B 367
B
DNQ
367
Software
16
BINDING SITE FOR RESIDUE DNQ A 368
A
DNQ
368
Software
14
B
SER
142
B
SER
142
4
1_555
B
THR
143
B
THR
143
4
1_555
B
GLU
193
B
GLU
193
4
1_555
B
DNQ
367
E
DNQ
4
1_555
B
GLU
13
B
GLU
13
16
1_555
B
TYR
16
B
TYR
16
16
1_555
B
TYR
61
B
TYR
61
16
1_555
B
PRO
89
B
PRO
89
16
1_555
B
LEU
90
B
LEU
90
16
1_555
B
THR
91
B
THR
91
16
1_555
B
ARG
96
B
ARG
96
16
1_555
B
THR
174
B
THR
174
16
1_555
B
GLU
193
B
GLU
193
16
1_555
B
THR
195
B
THR
195
16
1_555
B
MET
196
B
MET
196
16
1_555
B
TYR
220
B
TYR
220
16
1_555
B
SO4
366
D
SO4
16
1_555
B
HOH
368
G
HOH
16
1_555
B
HOH
369
G
HOH
16
1_555
B
HOH
455
G
HOH
16
1_555
A
GLU
13
A
GLU
13
14
1_555
A
TYR
16
A
TYR
16
14
1_555
A
TYR
61
A
TYR
61
14
1_555
A
PRO
89
A
PRO
89
14
1_555
A
LEU
90
A
LEU
90
14
1_555
A
THR
91
A
THR
91
14
1_555
A
ARG
96
A
ARG
96
14
1_555
A
THR
174
A
THR
174
14
1_555
A
GLU
193
A
GLU
193
14
1_555
A
THR
195
A
THR
195
14
1_555
A
MET
196
A
MET
196
14
1_555
A
TYR
220
A
TYR
220
14
1_555
A
HOH
378
F
HOH
14
1_555
A
HOH
437
F
HOH
14
1_555
19
P 21 21 21