0.010510
0.000000
0.000000
0.000000
0.009081
0.000000
0.000000
0.000000
0.010408
0.00000
0.00000
0.00000
Corper, A.L.
Teyton, L.
Wilson, I.A.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
8
90.00
90.00
90.00
95.149
110.123
96.084
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
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
N
88
N
N
N
89
S
C
N
90
N
C
N
91
N
O
N
92
N
C
N
93
N
C
N
94
N
C
N
95
N
O
N
96
N
N
N
97
N
O
N
98
N
H
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
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
O
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
N
N
128
N
C
N
129
N
C
N
130
N
O
N
131
N
O
N
132
N
H
N
133
N
H
N
134
N
H
N
135
N
H
N
136
N
H
N
137
N
N
N
138
S
C
N
139
N
C
N
140
N
O
N
141
N
C
Y
142
N
C
Y
143
N
N
Y
144
N
C
Y
145
N
C
Y
146
N
N
N
147
N
O
N
148
N
H
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
O
N
159
N
H
N
160
N
H
N
161
N
N
N
162
S
C
N
163
N
C
N
164
N
O
N
165
S
C
N
166
N
C
N
167
N
C
N
168
N
C
N
169
N
O
N
170
N
H
N
171
N
H
N
172
N
H
N
173
N
H
N
174
N
H
N
175
N
H
N
176
N
H
N
177
N
H
N
178
N
H
N
179
N
H
N
180
N
H
N
181
N
H
N
182
N
H
N
183
N
N
N
184
S
C
N
185
N
C
N
186
N
O
N
187
N
C
N
188
N
C
N
189
N
C
N
190
N
C
N
191
N
O
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
H
N
204
N
H
N
205
N
N
N
206
S
C
N
207
N
C
N
208
N
O
N
209
N
C
N
210
N
C
N
211
N
C
N
212
N
C
N
213
N
N
N
214
N
O
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
H
N
226
N
H
N
227
N
H
N
228
N
H
N
229
N
H
N
230
N
N
N
231
S
C
N
232
N
C
N
233
N
O
N
234
N
C
N
235
N
C
N
236
N
S
N
237
N
C
N
238
N
O
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
Y
255
N
C
Y
256
N
C
Y
257
N
C
Y
258
N
C
Y
259
N
C
Y
260
N
C
N
261
N
O
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
H
N
271
N
H
N
272
N
H
N
273
N
N
N
274
S
C
N
275
N
C
N
276
N
O
N
277
N
C
N
278
N
C
N
279
N
C
N
280
N
O
N
281
N
H
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
N
N
291
S
C
N
292
N
C
N
293
N
O
N
294
N
C
N
295
N
O
N
296
N
O
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
R
C
N
309
N
O
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
Y
326
N
C
Y
327
N
C
Y
328
N
C
Y
329
N
N
Y
330
N
C
Y
331
N
C
Y
332
N
C
Y
333
N
C
Y
334
N
C
N
335
N
O
N
336
N
H
N
337
N
H
N
338
N
H
N
339
N
H
N
340
N
H
N
341
N
H
N
342
N
H
N
343
N
H
N
344
N
H
N
345
N
H
N
346
N
H
N
347
N
H
N
348
N
N
N
349
S
C
N
350
N
C
N
351
N
O
N
352
N
C
Y
353
N
C
Y
354
N
C
Y
355
N
C
Y
356
N
C
Y
357
N
C
Y
358
N
C
N
359
N
O
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
N
N
373
S
C
N
374
N
C
N
375
N
O
N
376
N
C
N
377
N
C
N
378
N
C
N
379
N
O
N
380
N
H
N
381
N
H
N
382
N
H
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
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
N
129
N
sing
N
130
N
sing
N
131
N
sing
N
132
N
sing
N
133
N
sing
N
134
N
sing
N
135
N
doub
N
136
N
sing
N
137
N
sing
N
138
N
sing
N
139
N
sing
Y
140
N
sing
Y
141
N
doub
Y
142
N
doub
N
143
N
sing
Y
144
N
sing
N
145
N
sing
Y
146
N
sing
N
147
N
sing
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
doub
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
sing
N
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
sing
N
222
N
sing
N
223
N
sing
N
224
N
doub
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
doub
N
244
N
sing
N
245
N
sing
N
246
N
sing
N
247
N
sing
Y
248
N
doub
Y
249
N
sing
Y
250
N
sing
N
251
N
sing
Y
252
N
doub
N
253
N
sing
Y
254
N
doub
N
255
N
sing
Y
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
doub
N
267
N
sing
N
268
N
sing
N
269
N
sing
N
270
N
sing
N
271
N
sing
N
272
N
sing
N
273
N
sing
N
274
N
sing
N
275
N
sing
N
276
N
sing
N
277
N
sing
N
278
N
sing
N
279
N
sing
N
280
N
sing
N
281
N
sing
N
282
N
sing
N
283
N
doub
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
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
doub
N
313
N
sing
N
314
N
sing
N
315
N
sing
N
316
N
sing
Y
317
N
doub
Y
318
N
sing
Y
319
N
sing
N
320
N
sing
Y
321
N
doub
Y
322
N
sing
Y
323
N
sing
N
324
N
sing
Y
325
N
sing
Y
326
N
doub
N
327
N
sing
Y
328
N
doub
N
329
N
sing
Y
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
doub
N
341
N
sing
N
342
N
sing
N
343
N
sing
N
344
N
sing
Y
345
N
doub
Y
346
N
sing
Y
347
N
sing
N
348
N
sing
Y
349
N
doub
N
350
N
sing
Y
351
N
doub
N
352
N
sing
Y
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
doub
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
US
Science
SCIEAS
0038
0036-8075
288
505
511
10.1126/science.288.5465.505
10775108
A structural framework for deciphering the link between I-Ag7 and autoimmune diabetes.
2000
10.2210/pdb1es0/pdb
pdb_00001es0
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
96.0
1
IMAGE PLATE
1999-01-16
MARRESEARCH
SINGLE WAVELENGTH
M
x-ray
1
1.08
1.0
BL7-1
SSRL
1.08
SYNCHROTRON
SSRL BEAMLINE BL7-1
21623.129
H-2 CLASS II HISTOCOMPATIBILITY ANTIGEN
ALPHA CHAIN
1
man
polymer
25563.430
65 KD GLUTAMIC ACID DECARBOXYLASE+H-2 CLASS II HISTOCOMPATIBILITY ANTIGEN
PEPTIDE (RESIDUES 222-235) + BETA CHAIN
1
man
polymer
18.015
water
76
nat
water
no
no
EDDIEADHVGFYGTTVYQSPGDIGQYTHEFDGDELFYVDLDKKKTVWRLPEFGQLILFEPQGGLQNIAAEKHNLGILTKR
SNFTPATNEAPQATVFPKSPVLLGQPNTLICFVDNIFPPVINITWLRNSKSVTDGVYETSFLVNRDHSFHKLSYLTFIPS
DDDIYDCKVEHWGLEEPVLKHWSSADLVPR
EDDIEADHVGFYGTTVYQSPGDIGQYTHEFDGDELFYVDLDKKKTVWRLPEFGQLILFEPQGGLQNIAAEKHNLGILTKR
SNFTPATNEAPQATVFPKSPVLLGQPNTLICFVDNIFPPVINITWLRNSKSVTDGVYETSFLVNRDHSFHKLSYLTFIPS
DDDIYDCKVEHWGLEEPVLKHWSSADLVPR
A
polypeptide(L)
no
no
GSHSRGYEIAPVFVLLEYVTGSGSGSGDSERHFVHQFKGECYFTNGTQRIRLVTRYIYNREEYLRFDSDVGEYRAVTELG
RHSAEYYNKQYLERTRAELDTACRHNYEETEVPTSLRRLEQPNVAISLSRTEALNHHNTLVCSVTDFYPAKIKVRWFRNG
QEETVGVSSTQLIRNGDWTFQVLVMLEMTPHQGEVYTCHVEHPSLKSPITVEWSSADLVPR
GSHSRGYEIAPVFVLLEYVTGSGSGSGDSERHFVHQFKGECYFTNGTQRIRLVTRYIYNREEYLRFDSDVGEYRAVTELG
RHSAEYYNKQYLERTRAELDTACRHNYEETEVPTSLRRLEQPNVAISLSRTEALNHHNTLVCSVTDFYPAKIKVRWFRNG
QEETVGVSSTQLIRNGDWTFQVLVMLEMTPHQGEVYTCHVEHPSLKSPITVEWSSADLVPR
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
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
mouse
INSECT
sample
10090
Mus musculus
human
INSECT
sample
7
20
9606
Homo sapiens
human
INSECT
sample
27
213
9606
Homo sapiens
1
2.90
57.0
VAPOR DIFFUSION, HANGING DROP
6.5
16-18% PEG 4000, 0.2 M LICL (PH 6.6), 1% MPD, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
277
entity_src_gen
software
chem_comp_atom
chem_comp_bond
database_2
pdbx_initial_refinement_model
repository
Initial release
Version format compliance
Derived calculations
Version format compliance
Refinement description
Source and taxonomy
Data collection
Database references
Refinement description
1
0
2000-06-28
1
1
2007-10-16
1
2
2011-07-13
1
3
2017-08-23
1
4
2023-08-09
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
RCSB
Y
RCSB
2000-04-07
REL
REL
HOH
water
THIS ENTRY CONTAINS COORDINATES FOR THE EXTRACELLULAR
DOMAINS OF THE MURINE MHC CLASS II ALLELE I-A(G7) WITH A
FRAGMENT FROM GAD65 (207 - 220) COVALENTLY ATTACHED TO THE
FIRST RESIDUE OF THE AMINO TERMINUS OF THE MATURE BETA
CHAIN. THE NUMBERING SCHEME FOR THE I-A(G7) RESIDUES IS AS
DESCRIBED IN "SEQUENCES OF PROTEINS OF IMMUNOLOGICAL
INTEREST" (1991), EDITED BY E.A. KABAT, T.T. WU, H.M.
PERRY, K.S. GOTTESMAN AND C. FOELLER.
DIMERIZATION OF THE I-A(G7) HETERODIMER WAS FACILITATED BY
ADDING A LEUCINE ZIPPER TAIL TO THE CARBOXY TERMINUS OF
EACH CHAIN. IN ADDITION, A HEXAHISTIDINE SEQUENCE WAS
ENGINEERED TO THE CARBOXY TERMINAL END OF THE LEUCINE
ZIPPER. THIS ALLOWED THE SECRETED PROTEIN TO BE PURIFIED
BY NI-NTA CHROMATOGRAPHY. A THROMBIN CUT SITE WAS
ENGINEERED IN A SPACER SEQUENCE BETWEEN THE CARBOXY
TERMINAL RESIDUE OF EACH CHAIN AND THE LEUCINE ZIPPER-
HEXAHISTIDINE SEQUENCE SO THAT MOST OF THE ENGINEERED
RESIDUES COULD BE REMOVED FOR CRYSTALLIZATION. AFTER
THROMBIN DIGESTION, EIGHT ENGINEERED RESIDUES (SSADLVPR)
REMAINED ATTACHED TO THE CARBOXY TERMINAL END OF EACH
I-A(G7) CHAIN.
NO ELECTRON DENSITY WAS VISIBLE FOR 1) THE FIRST 2 RESIDUES
OF THE ALPHA CHAIN 2) THE LAST 6 RESIDUES OF THE SPACER
SEQUENCE ATTACHED TO THE C-TERMINUS OF THE ALPHA CHAIN,
3) THE 6 RESIDUE (GSGSGS) LINKER BETWEEN GAD65 AND THE BETA
CHAIN, 4) THE FIRST 4 RESIDUES OF THE BETA CHAIN, AND 5)
THE LAST 7 RESIDUES OF THE SPACER SEQUENCE ATTACHED TO THE
C-TERMINUS OF THE BETA CHAIN. SIX ADDITIONAL RESIDUES
(GSHSRG) FROM THE SIGNAL SEQUENCE REMAIN CONNECTED TO THE
AMINO TERMINUS OF THE GAD65 PEPTIDE; NO DENSITY IS PRESENT
FOR THESE RESIDUES.
THE RESIDUE NUMBERING FOR THE TWO PROTEIN CHAINS IS:
A 1B - A 178 : MHC CLASS II ALPHA CHAIN
A 179 - A 186 : SPACER SEQUENCE
B 207P - B 220P : RESIDUES 207-220 OF GAD65
B 1 - B 188 : MHC CLASS II BETA CHAIN
B 189 - B 196 : SPACER SEQUENCE
1IAK
I-A(K) - PDB CODE 1IAK
PDB
experimental model
HOH
4
3
HOH
HOH
187
A
HOH
8
3
HOH
HOH
188
A
HOH
9
3
HOH
HOH
189
A
HOH
10
3
HOH
HOH
190
A
HOH
12
3
HOH
HOH
191
A
HOH
14
3
HOH
HOH
192
A
HOH
15
3
HOH
HOH
193
A
HOH
16
3
HOH
HOH
194
A
HOH
18
3
HOH
HOH
195
A
HOH
19
3
HOH
HOH
196
A
HOH
20
3
HOH
HOH
197
A
HOH
22
3
HOH
HOH
198
A
HOH
25
3
HOH
HOH
199
A
HOH
26
3
HOH
HOH
200
A
HOH
27
3
HOH
HOH
201
A
HOH
29
3
HOH
HOH
202
A
HOH
30
3
HOH
HOH
203
A
HOH
31
3
HOH
HOH
204
A
HOH
32
3
HOH
HOH
205
A
HOH
33
3
HOH
HOH
206
A
HOH
35
3
HOH
HOH
207
A
HOH
36
3
HOH
HOH
208
A
HOH
37
3
HOH
HOH
209
A
HOH
38
3
HOH
HOH
210
A
HOH
39
3
HOH
HOH
211
A
HOH
40
3
HOH
HOH
212
A
HOH
44
3
HOH
HOH
213
A
HOH
45
3
HOH
HOH
214
A
HOH
48
3
HOH
HOH
215
A
HOH
52
3
HOH
HOH
216
A
HOH
56
3
HOH
HOH
217
A
HOH
59
3
HOH
HOH
218
A
HOH
63
3
HOH
HOH
219
A
HOH
64
3
HOH
HOH
220
A
HOH
65
3
HOH
HOH
221
A
HOH
68
3
HOH
HOH
222
A
HOH
69
3
HOH
HOH
223
A
HOH
70
3
HOH
HOH
224
A
HOH
71
3
HOH
HOH
225
A
HOH
73
3
HOH
HOH
226
A
HOH
74
3
HOH
HOH
227
A
HOH
1
3
HOH
HOH
221
B
HOH
2
3
HOH
HOH
222
B
HOH
3
3
HOH
HOH
223
B
HOH
5
3
HOH
HOH
224
B
HOH
6
3
HOH
HOH
225
B
HOH
7
3
HOH
HOH
226
B
HOH
11
3
HOH
HOH
227
B
HOH
13
3
HOH
HOH
228
B
HOH
17
3
HOH
HOH
229
B
HOH
21
3
HOH
HOH
230
B
HOH
23
3
HOH
HOH
231
B
HOH
24
3
HOH
HOH
232
B
HOH
28
3
HOH
HOH
233
B
HOH
34
3
HOH
HOH
234
B
HOH
41
3
HOH
HOH
235
B
HOH
42
3
HOH
HOH
236
B
HOH
43
3
HOH
HOH
237
B
HOH
46
3
HOH
HOH
238
B
HOH
47
3
HOH
HOH
239
B
HOH
49
3
HOH
HOH
240
B
HOH
50
3
HOH
HOH
241
B
HOH
51
3
HOH
HOH
242
B
HOH
53
3
HOH
HOH
243
B
HOH
54
3
HOH
HOH
244
B
HOH
55
3
HOH
HOH
245
B
HOH
57
3
HOH
HOH
246
B
HOH
58
3
HOH
HOH
247
B
HOH
60
3
HOH
HOH
248
B
HOH
61
3
HOH
HOH
249
B
HOH
62
3
HOH
HOH
250
B
HOH
66
3
HOH
HOH
251
B
HOH
67
3
HOH
HOH
252
B
HOH
72
3
HOH
HOH
253
B
HOH
75
3
HOH
HOH
254
B
HOH
76
3
HOH
HOH
255
B
n
1
D
1
A
n
2
C
1
A
ASP
1
n
3
B
ASP
1
A
ILE
1
n
4
A
ILE
1
A
GLU
1
n
5
GLU
1
A
ALA
2
n
6
ALA
2
A
ASP
3
n
7
ASP
3
A
HIS
4
n
8
HIS
4
A
VAL
5
n
9
VAL
5
A
GLY
6
n
10
GLY
6
A
PHE
7
n
11
PHE
7
A
TYR
8
n
12
TYR
8
A
GLY
9
n
13
GLY
9
A
THR
10
n
14
THR
10
A
THR
11
n
15
THR
11
A
VAL
12
n
16
VAL
12
A
TYR
13
n
17
TYR
13
A
GLN
14
n
18
GLN
14
A
SER
15
n
19
SER
15
A
PRO
16
n
20
PRO
16
A
GLY
17
n
21
GLY
17
A
ASP
18
n
22
ASP
18
A
ILE
19
n
23
ILE
19
A
GLY
20
n
24
GLY
20
A
GLN
21
n
25
GLN
21
A
TYR
22
n
26
TYR
22
A
THR
23
n
27
THR
23
A
HIS
24
n
28
HIS
24
A
GLU
25
n
29
GLU
25
A
PHE
26
n
30
PHE
26
A
ASP
27
n
31
ASP
27
A
GLY
28
n
32
GLY
28
A
ASP
29
n
33
ASP
29
A
GLU
30
n
34
GLU
30
A
LEU
31
n
35
LEU
31
A
PHE
32
n
36
PHE
32
A
TYR
33
n
37
TYR
33
A
VAL
34
n
38
VAL
34
A
ASP
35
n
39
ASP
35
A
LEU
36
n
40
LEU
36
A
ASP
37
n
41
ASP
37
A
LYS
38
n
42
LYS
38
A
LYS
39
n
43
LYS
39
A
LYS
40
n
44
LYS
40
A
THR
41
n
45
THR
41
A
VAL
42
n
46
VAL
42
A
TRP
43
n
47
TRP
43
A
ARG
44
n
48
ARG
44
A
LEU
45
n
49
LEU
45
A
PRO
46
n
50
PRO
46
A
GLU
47
n
51
GLU
47
A
PHE
48
n
52
PHE
48
A
GLY
49
n
53
GLY
49
A
GLN
50
n
54
GLN
50
A
LEU
51
n
55
LEU
51
A
ILE
52
n
56
ILE
52
A
LEU
53
n
57
LEU
53
A
PHE
54
n
58
PHE
54
A
GLU
55
n
59
GLU
55
A
PRO
56
n
60
PRO
56
A
GLN
57
n
61
GLN
57
A
GLY
58
n
62
GLY
58
A
GLY
59
n
63
GLY
59
A
LEU
60
n
64
LEU
60
A
GLN
61
n
65
GLN
61
A
ASN
62
n
66
ASN
62
A
ILE
63
n
67
ILE
63
A
ALA
64
n
68
ALA
64
A
ALA
65
n
69
ALA
65
A
GLU
66
n
70
GLU
66
A
LYS
67
n
71
LYS
67
A
HIS
68
n
72
HIS
68
A
ASN
69
n
73
ASN
69
A
LEU
70
n
74
LEU
70
A
GLY
71
n
75
GLY
71
A
ILE
72
n
76
ILE
72
A
LEU
73
n
77
LEU
73
A
THR
74
n
78
THR
74
A
LYS
75
n
79
LYS
75
A
ARG
76
n
80
ARG
76
A
SER
77
n
81
SER
77
A
ASN
78
n
82
ASN
78
A
PHE
79
n
83
PHE
79
A
THR
80
n
84
THR
80
A
PRO
81
n
85
PRO
81
A
ALA
82
n
86
ALA
82
A
THR
83
n
87
THR
83
A
ASN
84
n
88
ASN
84
A
GLU
85
n
89
GLU
85
A
ALA
86
n
90
ALA
86
A
PRO
87
n
91
PRO
87
A
GLN
88
n
92
GLN
88
A
ALA
89
n
93
ALA
89
A
THR
90
n
94
THR
90
A
VAL
91
n
95
VAL
91
A
PHE
92
n
96
PHE
92
A
PRO
93
n
97
PRO
93
A
LYS
94
n
98
LYS
94
A
SER
95
n
99
SER
95
A
PRO
96
n
100
PRO
96
A
VAL
97
n
101
VAL
97
A
LEU
98
n
102
LEU
98
A
LEU
99
n
103
LEU
99
A
GLY
100
n
104
GLY
100
A
GLN
101
n
105
GLN
101
A
PRO
102
n
106
PRO
102
A
ASN
103
n
107
ASN
103
A
THR
104
n
108
THR
104
A
LEU
105
n
109
LEU
105
A
ILE
106
n
110
ILE
106
A
CYS
107
n
111
CYS
107
A
PHE
108
n
112
PHE
108
A
VAL
109
n
113
VAL
109
A
ASP
110
n
114
ASP
110
A
ASN
111
n
115
ASN
111
A
ILE
112
n
116
ILE
112
A
PHE
113
n
117
PHE
113
A
PRO
114
n
118
PRO
114
A
PRO
115
n
119
PRO
115
A
VAL
116
n
120
VAL
116
A
ILE
117
n
121
ILE
117
A
ASN
118
n
122
ASN
118
A
ILE
119
n
123
ILE
119
A
THR
120
n
124
THR
120
A
TRP
121
n
125
TRP
121
A
LEU
122
n
126
LEU
122
A
ARG
123
n
127
ARG
123
A
ASN
124
n
128
ASN
124
A
SER
125
n
129
SER
125
A
LYS
126
n
130
LYS
126
A
SER
127
n
131
SER
127
A
VAL
128
n
132
VAL
128
A
THR
129
n
133
THR
129
A
ASP
130
n
134
ASP
130
A
GLY
131
n
135
GLY
131
A
VAL
132
n
136
VAL
132
A
TYR
133
n
137
TYR
133
A
GLU
134
n
138
GLU
134
A
THR
135
n
139
THR
135
A
SER
136
n
140
SER
136
A
PHE
137
n
141
PHE
137
A
LEU
138
n
142
LEU
138
A
VAL
139
n
143
VAL
139
A
ASN
140
n
144
ASN
140
A
ARG
141
n
145
ARG
141
A
ASP
142
n
146
ASP
142
A
HIS
143
n
147
HIS
143
A
SER
144
n
148
SER
144
A
PHE
145
n
149
PHE
145
A
HIS
146
n
150
HIS
146
A
LYS
147
n
151
LYS
147
A
LEU
148
n
152
LEU
148
A
SER
149
n
153
SER
149
A
TYR
150
n
154
TYR
150
A
LEU
151
n
155
LEU
151
A
THR
152
n
156
THR
152
A
PHE
153
n
157
PHE
153
A
ILE
154
n
158
ILE
154
A
PRO
155
n
159
PRO
155
A
SER
156
n
160
SER
156
A
ASP
157
n
161
ASP
157
A
ASP
158
n
162
ASP
158
A
ASP
159
n
163
ASP
159
A
ILE
160
n
164
ILE
160
A
TYR
161
n
165
TYR
161
A
ASP
162
n
166
ASP
162
A
CYS
163
n
167
CYS
163
A
LYS
164
n
168
LYS
164
A
VAL
165
n
169
VAL
165
A
GLU
166
n
170
GLU
166
A
HIS
167
n
171
HIS
167
A
TRP
168
n
172
TRP
168
A
GLY
169
n
173
GLY
169
A
LEU
170
n
174
LEU
170
A
GLU
171
n
175
GLU
171
A
GLU
172
n
176
GLU
172
A
PRO
173
n
177
PRO
173
A
VAL
174
n
178
VAL
174
A
LEU
175
n
179
LEU
175
A
LYS
176
n
180
LYS
176
A
HIS
177
n
181
HIS
177
A
TRP
178
n
182
TRP
178
A
SER
179
n
183
SER
179
A
SER
180
n
184
SER
180
A
n
185
181
A
n
186
182
A
n
187
183
A
n
188
184
A
n
189
185
A
n
190
186
A
n
1
P
201
B
n
2
P
202
B
n
3
P
203
B
n
4
P
204
B
n
5
P
205
B
n
6
P
206
B
TYR
207
n
7
P
TYR
207
B
GLU
208
n
8
P
GLU
208
B
ILE
209
n
9
P
ILE
209
B
ALA
210
n
10
P
ALA
210
B
PRO
211
n
11
P
PRO
211
B
VAL
212
n
12
P
VAL
212
B
PHE
213
n
13
P
PHE
213
B
VAL
214
n
14
P
VAL
214
B
LEU
215
n
15
P
LEU
215
B
LEU
216
n
16
P
LEU
216
B
GLU
217
n
17
P
GLU
217
B
TYR
218
n
18
P
TYR
218
B
VAL
219
n
19
P
VAL
219
B
THR
220
n
20
P
THR
220
B
n
21
-5
B
n
22
-4
B
n
23
-3
B
n
24
-2
B
n
25
-1
B
n
26
0
B
n
27
1
B
n
28
2
B
n
29
3
B
n
30
4
B
ARG
5
n
31
ARG
5
B
HIS
6
n
32
HIS
6
B
PHE
7
n
33
PHE
7
B
VAL
8
n
34
VAL
8
B
HIS
9
n
35
HIS
9
B
GLN
10
n
36
GLN
10
B
PHE
11
n
37
PHE
11
B
LYS
12
n
38
LYS
12
B
GLY
13
n
39
GLY
13
B
GLU
14
n
40
GLU
14
B
CYS
15
n
41
CYS
15
B
TYR
16
n
42
TYR
16
B
PHE
17
n
43
PHE
17
B
THR
18
n
44
THR
18
B
ASN
19
n
45
ASN
19
B
GLY
20
n
46
GLY
20
B
THR
21
n
47
THR
21
B
GLN
22
n
48
GLN
22
B
ARG
23
n
49
ARG
23
B
ILE
24
n
50
ILE
24
B
ARG
25
n
51
ARG
25
B
LEU
26
n
52
LEU
26
B
VAL
27
n
53
VAL
27
B
THR
28
n
54
THR
28
B
ARG
29
n
55
ARG
29
B
TYR
30
n
56
TYR
30
B
ILE
31
n
57
ILE
31
B
TYR
32
n
58
TYR
32
B
ASN
33
n
59
ASN
33
B
ARG
34
n
60
ARG
34
B
GLU
35
n
61
GLU
35
B
GLU
36
n
62
GLU
36
B
TYR
37
n
63
TYR
37
B
LEU
38
n
64
LEU
38
B
ARG
39
n
65
ARG
39
B
PHE
40
n
66
PHE
40
B
ASP
41
n
67
ASP
41
B
SER
42
n
68
SER
42
B
ASP
43
n
69
ASP
43
B
VAL
44
n
70
VAL
44
B
GLY
45
n
71
GLY
45
B
GLU
46
n
72
GLU
46
B
TYR
47
n
73
TYR
47
B
ARG
48
n
74
ARG
48
B
ALA
49
n
75
ALA
49
B
VAL
50
n
76
VAL
50
B
THR
51
n
77
THR
51
B
GLU
52
n
78
GLU
52
B
LEU
53
n
79
LEU
53
B
GLY
54
n
80
GLY
54
B
ARG
55
n
81
ARG
55
B
HIS
56
n
82
HIS
56
B
SER
57
n
83
SER
57
B
ALA
58
n
84
ALA
58
B
GLU
59
n
85
GLU
59
B
TYR
60
n
86
TYR
60
B
TYR
61
n
87
TYR
61
B
ASN
62
n
88
ASN
62
B
LYS
63
n
89
LYS
63
B
GLN
64
n
90
GLN
64
B
TYR
66
n
91
TYR
66
B
LEU
68
n
92
LEU
68
B
GLU
69
n
93
GLU
69
B
ARG
70
n
94
ARG
70
B
THR
71
n
95
THR
71
B
ARG
72
n
96
ARG
72
B
ALA
73
n
97
ALA
73
B
GLU
74
n
98
GLU
74
B
LEU
75
n
99
LEU
75
B
ASP
76
n
100
ASP
76
B
THR
77
n
101
THR
77
B
ALA
78
n
102
ALA
78
B
CYS
79
n
103
CYS
79
B
ARG
80
n
104
ARG
80
B
HIS
81
n
105
HIS
81
B
ASN
82
n
106
ASN
82
B
TYR
83
n
107
TYR
83
B
GLU
84
n
108
GLU
84
B
GLU
85
n
109
GLU
85
B
THR
86
n
110
THR
86
B
GLU
87
n
111
GLU
87
B
VAL
88
n
112
VAL
88
B
PRO
89
n
113
PRO
89
B
THR
90
n
114
THR
90
B
SER
91
n
115
SER
91
B
LEU
92
n
116
LEU
92
B
ARG
93
n
117
ARG
93
B
ARG
94
n
118
ARG
94
B
LEU
94
n
119
A
LEU
94
B
GLU
95
n
120
GLU
95
B
GLN
96
n
121
GLN
96
B
PRO
97
n
122
PRO
97
B
ASN
98
n
123
ASN
98
B
VAL
99
n
124
VAL
99
B
ALA
100
n
125
ALA
100
B
ILE
101
n
126
ILE
101
B
SER
102
n
127
SER
102
B
LEU
103
n
128
LEU
103
B
SER
104
n
129
SER
104
B
n
130
105
B
n
131
106
B
n
132
107
B
n
133
108
B
n
134
109
B
n
135
110
B
n
136
111
B
n
137
112
B
ASN
113
n
138
ASN
113
B
THR
114
n
139
THR
114
B
LEU
115
n
140
LEU
115
B
VAL
116
n
141
VAL
116
B
CYS
117
n
142
CYS
117
B
SER
118
n
143
SER
118
B
VAL
119
n
144
VAL
119
B
THR
120
n
145
THR
120
B
ASP
121
n
146
ASP
121
B
PHE
122
n
147
PHE
122
B
TYR
123
n
148
TYR
123
B
PRO
124
n
149
PRO
124
B
ALA
125
n
150
ALA
125
B
LYS
126
n
151
LYS
126
B
ILE
127
n
152
ILE
127
B
LYS
128
n
153
LYS
128
B
VAL
129
n
154
VAL
129
B
ARG
130
n
155
ARG
130
B
TRP
131
n
156
TRP
131
B
PHE
132
n
157
PHE
132
B
ARG
133
n
158
ARG
133
B
ASN
134
n
159
ASN
134
B
GLY
135
n
160
GLY
135
B
GLN
136
n
161
GLN
136
B
GLU
137
n
162
GLU
137
B
GLU
138
n
163
GLU
138
B
THR
139
n
164
THR
139
B
VAL
140
n
165
VAL
140
B
GLY
141
n
166
GLY
141
B
VAL
142
n
167
VAL
142
B
SER
143
n
168
SER
143
B
SER
144
n
169
SER
144
B
THR
145
n
170
THR
145
B
GLN
146
n
171
GLN
146
B
LEU
147
n
172
LEU
147
B
ILE
148
n
173
ILE
148
B
ARG
149
n
174
ARG
149
B
ASN
150
n
175
ASN
150
B
GLY
151
n
176
GLY
151
B
ASP
152
n
177
ASP
152
B
TRP
153
n
178
TRP
153
B
THR
154
n
179
THR
154
B
PHE
155
n
180
PHE
155
B
GLN
156
n
181
GLN
156
B
VAL
157
n
182
VAL
157
B
LEU
158
n
183
LEU
158
B
VAL
159
n
184
VAL
159
B
MET
160
n
185
MET
160
B
LEU
161
n
186
LEU
161
B
GLU
162
n
187
GLU
162
B
MET
163
n
188
MET
163
B
THR
164
n
189
THR
164
B
PRO
165
n
190
PRO
165
B
HIS
166
n
191
HIS
166
B
GLN
167
n
192
GLN
167
B
GLY
168
n
193
GLY
168
B
GLU
169
n
194
GLU
169
B
VAL
170
n
195
VAL
170
B
TYR
171
n
196
TYR
171
B
THR
172
n
197
THR
172
B
CYS
173
n
198
CYS
173
B
HIS
174
n
199
HIS
174
B
VAL
175
n
200
VAL
175
B
GLU
176
n
201
GLU
176
B
HIS
177
n
202
HIS
177
B
PRO
178
n
203
PRO
178
B
SER
179
n
204
SER
179
B
LEU
180
n
205
LEU
180
B
LYS
181
n
206
LYS
181
B
SER
182
n
207
SER
182
B
PRO
183
n
208
PRO
183
B
ILE
184
n
209
ILE
184
B
THR
185
n
210
THR
185
B
VAL
186
n
211
VAL
186
B
GLU
187
n
212
GLU
187
B
TRP
188
n
213
TRP
188
B
SER
189
n
214
SER
189
B
n
215
190
B
n
216
191
B
n
217
192
B
n
218
193
B
n
219
194
B
n
220
195
B
n
221
196
B
author_and_software_defined_assembly
PISA
2
dimeric
5990
-28
17770
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
N
VAL
42
A
N
VAL
46
A
O
TYR
33
A
O
TYR
37
A
N
VAL
34
A
N
VAL
38
A
O
TYR
22
A
O
TYR
26
A
O
GLU
25
A
O
GLU
29
A
N
PHE
7
A
N
PHE
11
A
O
SER
15
A
O
SER
19
B
N
PHE
7
B
N
PHE
33
B
N
THR
18
B
N
THR
44
B
O
ARG
23
B
O
ARG
49
B
N
TYR
32
B
N
TYR
58
B
O
GLU
35
B
O
GLU
61
B
O
ARG
39
B
O
ARG
65
B
N
ARG
48
B
N
ARG
74
A
O
PHE
92
A
O
PHE
96
A
N
ILE
106
A
N
ILE
110
A
N
ILE
112
A
N
ILE
116
A
O
PHE
145
A
O
PHE
149
A
N
TYR
150
A
N
TYR
154
A
O
TYR
133
A
O
TYR
137
A
O
PHE
92
A
O
PHE
96
A
N
ILE
106
A
N
ILE
110
A
N
ILE
112
A
N
ILE
116
A
O
PHE
145
A
O
PHE
149
A
O
HIS
146
A
O
HIS
150
A
N
LEU
138
A
N
LEU
142
A
N
VAL
128
A
N
VAL
132
A
O
TRP
121
A
O
TRP
125
A
O
LEU
122
A
O
LEU
126
A
N
ASP
162
A
N
ASP
166
A
N
VAL
165
A
N
VAL
169
A
O
VAL
174
A
O
VAL
178
B
O
SER
102
B
O
SER
127
B
N
VAL
116
B
N
VAL
141
B
O
PHE
122
B
O
PHE
147
B
N
PHE
155
B
N
PHE
180
B
N
MET
160
B
N
MET
185
B
O
SER
143
B
O
SER
168
B
O
SER
102
B
O
SER
127
B
N
VAL
116
B
N
VAL
141
B
O
PHE
122
B
O
PHE
147
B
N
PHE
155
B
N
PHE
180
B
O
GLN
156
B
O
GLN
181
B
N
ILE
148
B
N
ILE
173
B
O
GLN
136
B
O
GLN
161
B
N
ARG
133
B
N
ARG
158
B
O
PHE
132
B
O
PHE
157
B
N
THR
172
B
N
THR
197
B
N
VAL
175
B
N
VAL
200
B
O
ILE
184
B
O
ILE
209
B
1
A
CG
ASP
1
A
CG
ASP
3
1
Y
B
1
A
OD1
ASP
1
A
OD1
ASP
3
1
Y
B
1
A
OD2
ASP
1
A
OD2
ASP
3
1
Y
1
A
CG
LYS
40
A
CG
LYS
44
1
Y
1
A
CD
LYS
40
A
CD
LYS
44
1
Y
1
A
CE
LYS
40
A
CE
LYS
44
1
Y
1
A
NZ
LYS
40
A
NZ
LYS
44
1
Y
P
1
B
CG
TYR
207
B
CG
TYR
7
1
Y
P
1
B
CD1
TYR
207
B
CD1
TYR
7
1
Y
P
1
B
CD2
TYR
207
B
CD2
TYR
7
1
Y
P
1
B
CE1
TYR
207
B
CE1
TYR
7
1
Y
P
1
B
CE2
TYR
207
B
CE2
TYR
7
1
Y
P
1
B
CZ
TYR
207
B
CZ
TYR
7
1
Y
P
1
B
OH
TYR
207
B
OH
TYR
7
1
Y
P
1
B
CG
TYR
218
B
CG
TYR
18
1
Y
P
1
B
CD1
TYR
218
B
CD1
TYR
18
1
Y
P
1
B
CD2
TYR
218
B
CD2
TYR
18
1
Y
P
1
B
CE1
TYR
218
B
CE1
TYR
18
1
Y
P
1
B
CE2
TYR
218
B
CE2
TYR
18
1
Y
P
1
B
CZ
TYR
218
B
CZ
TYR
18
1
Y
P
1
B
OH
TYR
218
B
OH
TYR
18
1
Y
P
1
B
OG1
THR
220
B
OG1
THR
20
1
Y
P
1
B
CG2
THR
220
B
CG2
THR
20
1
Y
1
B
CG
LYS
63
B
CG
LYS
89
1
Y
1
B
CD
LYS
63
B
CD
LYS
89
1
Y
1
B
CE
LYS
63
B
CE
LYS
89
1
Y
1
B
NZ
LYS
63
B
NZ
LYS
89
1
Y
1
B
CG
GLU
85
B
CG
GLU
109
1
Y
1
B
CD
GLU
85
B
CD
GLU
109
1
Y
1
B
OE1
GLU
85
B
OE1
GLU
109
1
Y
1
B
OE2
GLU
85
B
OE2
GLU
109
1
Y
1
B
CG
ASN
113
B
CG
ASN
138
1
Y
1
B
OD1
ASN
113
B
OD1
ASN
138
1
Y
1
B
ND2
ASN
113
B
ND2
ASN
138
1
Y
1
B
CG
HIS
166
B
CG
HIS
191
1
Y
1
B
ND1
HIS
166
B
ND1
HIS
191
1
Y
1
B
CD2
HIS
166
B
CD2
HIS
191
1
Y
1
B
CE1
HIS
166
B
CE1
HIS
191
1
Y
1
B
NE2
HIS
166
B
NE2
HIS
191
1
Y
D
1
A
GLU
1
A
GLU
1
1
Y
C
1
A
ASP
1
A
ASP
2
1
Y
1
A
ALA
181
A
ALA
185
1
Y
1
A
ASP
182
A
ASP
186
1
Y
1
A
LEU
183
A
LEU
187
1
Y
1
A
VAL
184
A
VAL
188
1
Y
1
A
PRO
185
A
PRO
189
1
Y
1
A
ARG
186
A
ARG
190
1
Y
P
1
B
GLY
201
B
GLY
1
1
Y
P
1
B
SER
202
B
SER
2
1
Y
P
1
B
HIS
203
B
HIS
3
1
Y
P
1
B
SER
204
B
SER
4
1
Y
P
1
B
ARG
205
B
ARG
5
1
Y
P
1
B
GLY
206
B
GLY
6
1
Y
1
B
GLY
-5
B
GLY
21
1
Y
1
B
SER
-4
B
SER
22
1
Y
1
B
GLY
-3
B
GLY
23
1
Y
1
B
SER
-2
B
SER
24
1
Y
1
B
GLY
-1
B
GLY
25
1
Y
1
B
SER
0
B
SER
26
1
Y
1
B
GLY
1
B
GLY
27
1
Y
1
B
ASP
2
B
ASP
28
1
Y
1
B
SER
3
B
SER
29
1
Y
1
B
GLU
4
B
GLU
30
1
Y
1
B
ARG
105
B
ARG
130
1
Y
1
B
THR
106
B
THR
131
1
Y
1
B
GLU
107
B
GLU
132
1
Y
1
B
ALA
108
B
ALA
133
1
Y
1
B
LEU
109
B
LEU
134
1
Y
1
B
ASN
110
B
ASN
135
1
Y
1
B
HIS
111
B
HIS
136
1
Y
1
B
HIS
112
B
HIS
137
1
Y
1
B
SER
190
B
SER
215
1
Y
1
B
ALA
191
B
ALA
216
1
Y
1
B
ASP
192
B
ASP
217
1
Y
1
B
LEU
193
B
LEU
218
1
Y
1
B
VAL
194
B
VAL
219
1
Y
1
B
PRO
195
B
PRO
220
1
Y
1
B
ARG
196
B
ARG
221
1
Y
1
A
PHE
48
-29.26
-80.83
1
A
LEU
51
-108.38
-70.17
1
A
ASP
158
78.63
-33.23
1
B
ASN
33
66.04
-97.94
1
B
THR
90
-121.37
-98.02
1
B
PRO
165
-57.95
67.99
1
B
GLN
167
-37.16
137.21
PROTEIN_REP.PARAM
PROTEIN.TOP
WATER_REP.PARAM
WATER.TOP
CIS_PEPTIDE.PARAM
CIS_PEPTIDE.TOP
36.10
8.00000
0.00000
0.00000
-3.51000
0.00000
-4.50000
0.258
0.007
0.21
0.21
2.60
39.96
1541
15754
9.800
99.3
RANDOM
1
GROUP
THROUGHOUT
0.000
MOLECULAR REPLACEMENT
I-A(K) - PDB CODE 1IAK
ENGH & HUBER
FLAT MODEL
32.63
0.35
0.39
0.30
5.00
0.40
0.28
2.60
39.96
76
3088
0
0
3012
0.006
1.30
26.00
0.81
0.344
0.028
0.276
2.69
149
1396
10
9.60
99.60
51.80
2.600
39.960
1ES0
15754
-3.000
0.068
1
15.7000
4.200
99.3
2.60
2.69
4.2
0.353
1
4.20
99.6
data reduction
DENZO
data reduction
TRUNCATE
phasing
AMoRE
refinement
CNS
0.9
data scaling
CCP4
(TRUNCATE)
CRYSTAL STRUCTURE OF THE MURINE CLASS II ALLELE I-A(G7) COMPLEXED WITH THE GLUTAMIC ACID DECARBOXYLASE (GAD65) PEPTIDE 207-220
1
N
N
2
N
N
3
N
N
3
N
N
A
GLU
47
A
GLU
51
HELX_P
A
LEU
51
A
LEU
55
5
1
5
A
GLU
55
A
GLU
59
HELX_P
A
SER
77
A
SER
81
1
2
23
B
GLY
54
B
GLY
80
HELX_P
B
LEU
68
B
LEU
92
1
3
13
B
TYR
66
B
TYR
91
HELX_P
B
ALA
78
B
ALA
102
1
4
12
B
ALA
78
B
ALA
102
HELX_P
B
THR
86
B
THR
110
1
5
9
B
THR
90
B
THR
114
HELX_P
B
ARG
94
B
ARG
118
5
6
5
disulf
2.031
A
CYS
107
A
SG
CYS
111
1_555
A
CYS
163
A
SG
CYS
167
1_555
disulf
2.043
B
CYS
15
B
SG
CYS
41
1_555
B
CYS
79
B
SG
CYS
103
1_555
disulf
2.025
B
CYS
117
B
SG
CYS
142
1_555
B
CYS
173
B
SG
CYS
198
1_555
IMMUNE SYSTEM
HISTOCOMPATIBILITY ANTIGEN, CLASS II MHC I-A(G7), IMMUNE SYSTEM
A
SER
15
A
SER
19
1
A
PRO
16
A
PRO
20
0.67
A
PHE
113
A
PHE
117
1
A
PRO
114
A
PRO
118
-0.74
B
TYR
123
B
TYR
148
1
B
PRO
124
B
PRO
149
-0.08
HA2D_MOUSE
UNP
1
P04228
DCE2_HUMAN
UNP
2
Q05329
AAA39547
GB
2
387435
24
205
1ES0
1
178
P04228
A
1
5
182
222
235
1ES0
207
220
Q05329
P
P
B
2
7
20
28
214
1ES0
1
188
387435
B
3
27
213
1
SEE REMARK 999
SER
179
1ES0
A
P04228
UNP
183
1
SEE REMARK 999
SER
180
1ES0
A
P04228
UNP
184
1
SEE REMARK 999
ALA
181
1ES0
A
P04228
UNP
185
1
SEE REMARK 999
ASP
182
1ES0
A
P04228
UNP
186
1
SEE REMARK 999
LEU
183
1ES0
A
P04228
UNP
187
1
SEE REMARK 999
VAL
184
1ES0
A
P04228
UNP
188
1
SEE REMARK 999
PRO
185
1ES0
A
P04228
UNP
189
1
SEE REMARK 999
ARG
186
1ES0
A
P04228
UNP
190
2
SEE REMARK 999
GLY
201
1ES0
P
B
Q05329
UNP
1
2
SEE REMARK 999
SER
202
1ES0
P
B
Q05329
UNP
2
2
SEE REMARK 999
HIS
203
1ES0
P
B
Q05329
UNP
3
2
SEE REMARK 999
SER
204
1ES0
P
B
Q05329
UNP
4
2
SEE REMARK 999
ARG
205
1ES0
P
B
Q05329
UNP
5
2
SEE REMARK 999
GLY
206
1ES0
P
B
Q05329
UNP
6
2
SEE REMARK 999
GLY
-5
1ES0
B
387435
GB
21
2
SEE REMARK 999
SER
-4
1ES0
B
387435
GB
22
2
SEE REMARK 999
GLY
-3
1ES0
B
387435
GB
23
2
SEE REMARK 999
SER
-2
1ES0
B
387435
GB
24
2
SEE REMARK 999
GLY
-1
1ES0
B
387435
GB
25
2
SEE REMARK 999
SER
0
1ES0
B
387435
GB
26
2
SEE REMARK 999
SER
189
1ES0
B
387435
GB
214
2
SEE REMARK 999
SER
190
1ES0
B
387435
GB
215
2
SEE REMARK 999
ALA
191
1ES0
B
387435
GB
216
2
SEE REMARK 999
ASP
192
1ES0
B
387435
GB
217
2
SEE REMARK 999
LEU
193
1ES0
B
387435
GB
218
2
SEE REMARK 999
VAL
194
1ES0
B
387435
GB
219
2
SEE REMARK 999
PRO
195
1ES0
B
387435
GB
220
2
SEE REMARK 999
ARG
196
1ES0
B
387435
GB
221
8
4
4
4
4
4
4
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
A
LYS
40
A
LYS
44
A
TRP
43
A
TRP
47
A
ASP
29
A
ASP
33
A
ASP
35
A
ASP
39
A
ILE
19
A
ILE
23
A
PHE
26
A
PHE
30
A
HIS
4
A
HIS
8
A
SER
15
A
SER
19
B
PHE
7
B
PHE
33
B
THR
18
B
THR
44
B
ARG
23
B
ARG
49
B
TYR
32
B
TYR
58
B
GLU
35
B
GLU
61
B
ASP
41
B
ASP
67
B
TYR
47
B
TYR
73
B
ALA
49
B
ALA
75
A
GLN
88
A
GLN
92
A
PRO
93
A
PRO
97
A
ASN
103
A
ASN
107
A
ILE
112
A
ILE
116
A
PHE
145
A
PHE
149
A
PHE
153
A
PHE
157
A
VAL
132
A
VAL
136
A
GLU
134
A
GLU
138
A
GLN
88
A
GLN
92
A
PRO
93
A
PRO
97
A
ASN
103
A
ASN
107
A
ILE
112
A
ILE
116
A
PHE
145
A
PHE
149
A
PHE
153
A
PHE
157
A
LEU
138
A
LEU
142
A
VAL
139
A
VAL
143
A
LYS
126
A
LYS
130
A
VAL
128
A
VAL
132
A
ASN
118
A
ASN
122
A
ARG
123
A
ARG
127
A
ILE
160
A
ILE
164
A
GLU
166
A
GLU
170
A
VAL
174
A
VAL
178
A
SER
179
A
SER
183
B
ASN
98
B
ASN
123
B
LEU
103
B
LEU
128
B
THR
114
B
THR
139
B
PHE
122
B
PHE
147
B
PHE
155
B
PHE
180
B
GLU
162
B
GLU
187
B
VAL
142
B
VAL
167
B
SER
144
B
SER
169
B
ASN
98
B
ASN
123
B
LEU
103
B
LEU
128
B
THR
114
B
THR
139
B
PHE
122
B
PHE
147
B
PHE
155
B
PHE
180
B
GLU
162
B
GLU
187
B
ILE
148
B
ILE
173
B
ARG
149
B
ARG
174
B
GLN
136
B
GLN
161
B
GLU
137
B
GLU
162
B
LYS
128
B
LYS
153
B
ARG
133
B
ARG
158
B
TYR
171
B
TYR
196
B
GLU
176
B
GLU
201
B
ILE
184
B
ILE
209
B
TRP
188
B
TRP
213
20
C 2 2 21