0.026413
0.000000
0.000000
0.000000
0.023529
0.000000
0.000000
0.000000
0.006653
0.00000
0.00000
0.00000
Cherezov, V.
Liu, W.
Derrick, J.P.
Luan, B.
Aksimentiev, A.
Katritch, V.
Caffrey, M.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
4
90.00
90.00
90.00
37.860
42.500
150.300
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
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
C8 H18
114.229
N-OCTANE
non-polymer
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
S
C
N
76
N
C
N
77
N
O
N
78
N
C
N
79
N
C
N
80
N
C
N
81
N
O
N
82
N
N
N
83
N
O
N
84
N
H
N
85
N
H
N
86
N
H
N
87
N
H
N
88
N
H
N
89
N
H
N
90
N
H
N
91
N
H
N
92
N
H
N
93
N
H
N
94
N
N
N
95
S
C
N
96
N
C
N
97
N
O
N
98
N
C
N
99
N
C
N
100
N
C
N
101
N
O
N
102
N
O
N
103
N
O
N
104
N
H
N
105
N
H
N
106
N
H
N
107
N
H
N
108
N
H
N
109
N
H
N
110
N
H
N
111
N
H
N
112
N
H
N
113
N
N
N
114
N
C
N
115
N
C
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
N
N
124
S
C
N
125
N
C
N
126
N
O
N
127
N
C
Y
128
N
C
Y
129
N
N
Y
130
N
C
Y
131
N
C
Y
132
N
N
N
133
N
O
N
134
N
H
N
135
N
H
N
136
N
H
N
137
N
H
N
138
N
H
N
139
N
H
N
140
N
H
N
141
N
H
N
142
N
H
N
143
N
H
N
144
N
O
N
145
N
H
N
146
N
H
N
147
N
N
N
148
S
C
N
149
N
C
N
150
N
O
N
151
S
C
N
152
N
C
N
153
N
C
N
154
N
C
N
155
N
O
N
156
N
H
N
157
N
H
N
158
N
H
N
159
N
H
N
160
N
H
N
161
N
H
N
162
N
H
N
163
N
H
N
164
N
H
N
165
N
H
N
166
N
H
N
167
N
H
N
168
N
H
N
169
N
N
N
170
S
C
N
171
N
C
N
172
N
O
N
173
N
C
N
174
N
C
N
175
N
C
N
176
N
C
N
177
N
O
N
178
N
H
N
179
N
H
N
180
N
H
N
181
N
H
N
182
N
H
N
183
N
H
N
184
N
H
N
185
N
H
N
186
N
H
N
187
N
H
N
188
N
H
N
189
N
H
N
190
N
H
N
191
N
N
N
192
S
C
N
193
N
C
N
194
N
O
N
195
N
C
N
196
N
C
N
197
N
C
N
198
N
C
N
199
N
N
N
200
N
O
N
201
N
H
N
202
N
H
N
203
N
H
N
204
N
H
N
205
N
H
N
206
N
H
N
207
N
H
N
208
N
H
N
209
N
H
N
210
N
H
N
211
N
H
N
212
N
H
N
213
N
H
N
214
N
H
N
215
N
H
N
216
N
C
N
217
N
C
N
218
N
C
N
219
N
C
N
220
N
C
N
221
N
C
N
222
N
C
N
223
N
C
N
224
N
H
N
225
N
H
N
226
N
H
N
227
N
H
N
228
N
H
N
229
N
H
N
230
N
H
N
231
N
H
N
232
N
H
N
233
N
H
N
234
N
H
N
235
N
H
N
236
N
H
N
237
N
H
N
238
N
H
N
239
N
H
N
240
N
H
N
241
N
H
N
242
N
N
N
243
S
C
N
244
N
C
N
245
N
O
N
246
N
C
Y
247
N
C
Y
248
N
C
Y
249
N
C
Y
250
N
C
Y
251
N
C
Y
252
N
C
N
253
N
O
N
254
N
H
N
255
N
H
N
256
N
H
N
257
N
H
N
258
N
H
N
259
N
H
N
260
N
H
N
261
N
H
N
262
N
H
N
263
N
H
N
264
N
H
N
265
N
N
N
266
S
C
N
267
N
C
N
268
N
O
N
269
N
C
N
270
N
C
N
271
N
C
N
272
N
O
N
273
N
H
N
274
N
H
N
275
N
H
N
276
N
H
N
277
N
H
N
278
N
H
N
279
N
H
N
280
N
H
N
281
N
H
N
282
N
N
N
283
S
C
N
284
N
C
N
285
N
O
N
286
N
C
N
287
N
O
N
288
N
O
N
289
N
H
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
S
N
297
N
O
N
298
N
O
N
299
N
O
N
300
N
O
N
301
N
N
N
302
S
C
N
303
N
C
N
304
N
O
N
305
R
C
N
306
N
O
N
307
N
C
N
308
N
O
N
309
N
H
N
310
N
H
N
311
N
H
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
N
N
319
S
C
N
320
N
C
N
321
N
O
N
322
N
C
Y
323
N
C
Y
324
N
C
Y
325
N
C
Y
326
N
N
Y
327
N
C
Y
328
N
C
Y
329
N
C
Y
330
N
C
Y
331
N
C
N
332
N
O
N
333
N
H
N
334
N
H
N
335
N
H
N
336
N
H
N
337
N
H
N
338
N
H
N
339
N
H
N
340
N
H
N
341
N
H
N
342
N
H
N
343
N
H
N
344
N
H
N
345
N
N
N
346
S
C
N
347
N
C
N
348
N
O
N
349
N
C
Y
350
N
C
Y
351
N
C
Y
352
N
C
Y
353
N
C
Y
354
N
C
Y
355
N
C
N
356
N
O
N
357
N
O
N
358
N
H
N
359
N
H
N
360
N
H
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
N
N
370
S
C
N
371
N
C
N
372
N
O
N
373
N
C
N
374
N
C
N
375
N
C
N
376
N
O
N
377
N
H
N
378
N
H
N
379
N
H
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
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
doub
N
85
N
sing
N
86
N
sing
N
87
N
sing
N
88
N
sing
N
89
N
sing
N
90
N
sing
N
91
N
sing
N
92
N
sing
N
93
N
sing
N
94
N
sing
N
95
N
doub
N
96
N
sing
N
97
N
sing
N
98
N
sing
N
99
N
sing
N
100
N
sing
N
101
N
sing
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
sing
N
111
N
sing
N
112
N
sing
N
113
N
doub
N
114
N
sing
N
115
N
sing
N
116
N
sing
N
117
N
sing
N
118
N
sing
N
119
N
sing
N
120
N
sing
N
121
N
sing
N
122
N
doub
N
123
N
sing
N
124
N
sing
N
125
N
sing
N
126
N
sing
Y
127
N
sing
Y
128
N
doub
Y
129
N
doub
N
130
N
sing
Y
131
N
sing
N
132
N
sing
Y
133
N
sing
N
134
N
sing
N
135
N
sing
N
136
N
sing
N
137
N
sing
N
138
N
sing
N
139
N
sing
N
140
N
sing
N
141
N
sing
N
142
N
sing
N
143
N
sing
N
144
N
sing
N
145
N
doub
N
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
sing
N
159
N
sing
N
160
N
sing
N
161
N
sing
N
162
N
sing
N
163
N
sing
N
164
N
sing
N
165
N
sing
N
166
N
doub
N
167
N
sing
N
168
N
sing
N
169
N
sing
N
170
N
sing
N
171
N
sing
N
172
N
sing
N
173
N
sing
N
174
N
sing
N
175
N
sing
N
176
N
sing
N
177
N
sing
N
178
N
sing
N
179
N
sing
N
180
N
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
doub
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
sing
N
201
N
sing
N
202
N
sing
N
203
N
sing
N
204
N
sing
N
205
N
sing
N
206
N
sing
N
207
N
sing
N
208
N
sing
N
209
N
sing
N
210
N
sing
N
211
N
sing
N
212
N
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
sing
N
233
N
sing
N
234
N
sing
N
235
N
sing
N
236
N
doub
N
237
N
sing
N
238
N
sing
N
239
N
sing
N
240
N
sing
Y
241
N
doub
Y
242
N
sing
Y
243
N
sing
N
244
N
sing
Y
245
N
doub
N
246
N
sing
Y
247
N
doub
N
248
N
sing
Y
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
doub
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
doub
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
doub
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
doub
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
sing
N
305
N
sing
N
306
N
sing
N
307
N
sing
N
308
N
sing
N
309
N
doub
N
310
N
sing
N
311
N
sing
N
312
N
sing
N
313
N
sing
Y
314
N
doub
Y
315
N
sing
Y
316
N
sing
N
317
N
sing
Y
318
N
doub
Y
319
N
sing
Y
320
N
sing
N
321
N
sing
Y
322
N
sing
Y
323
N
doub
N
324
N
sing
Y
325
N
doub
N
326
N
sing
Y
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
N
347
N
sing
Y
348
N
doub
N
349
N
sing
Y
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
doub
N
362
N
sing
N
363
N
sing
N
364
N
sing
N
365
N
sing
N
366
N
sing
N
367
N
sing
N
368
N
sing
N
369
N
sing
N
370
N
sing
N
371
N
sing
N
372
N
sing
US
Proteins
PSFGEY
0867
1097-0134
71
24
34
10.1002/prot.21841
18076035
In meso crystal structure and docking simulations suggest an alternative proteoglycan binding site in the OpcA outer membrane adhesin.
2008
US
Proc.Natl.Acad.Sci.USA
PNASA6
0040
0027-8424
99
3417
10.1073/PNAS.062630899
11891340
Crystal Structure of the Opca Integral Membrane Adhesin from Neisseria Meningitidis.
2002
10.2210/pdb2vdf/pdb
pdb_00002vdf
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
100
1
CCD
ADSC CCD
SINGLE WAVELENGTH
M
x-ray
1
0.9176
1.0
F1
CHESS
0.9176
SYNCHROTRON
CHESS BEAMLINE F1
28092.643
OUTER MEMBRANE PROTEIN
1
man
polymer
114.229
N-OCTANE
1
syn
non-polymer
96.063
SULFATE ION
1
syn
non-polymer
18.015
water
120
nat
water
OPCA
no
no
AQELQTANEFTVHTDLSSISSTRAFLKEKHKAAKHIGVRADIPFDANQGIRLEAGFGRSKKNIINLETDENKLGKTKNVK
LPTGVPENRIDLYTGYTYTQTLSDSLNFRVGAGLGFESSKDSIKTTKHTLHSSRQSWLAKVHADLLSQLGNGWYINPWSE
VKFDLNSRYKLNTGVTNLKKDINQKTNGWGFGLGANIGKKLGESASIEAGPFYKQRTYKESGEFSVTTKSGDVSLTIPKT
SIREYGLRVGIKF
AQELQTANEFTVHTDLSSISSTRAFLKEKHKAAKHIGVRADIPFDANQGIRLEAGFGRSKKNIINLETDENKLGKTKNVK
LPTGVPENRIDLYTGYTYTQTLSDSLNFRVGAGLGFESSKDSIKTTKHTLHSSRQSWLAKVHADLLSQLGNGWYINPWSE
VKFDLNSRYKLNTGVTNLKKDINQKTNGWGFGLGANIGKKLGESASIEAGPFYKQRTYKESGEFSVTTKSGDVSLTIPKT
SIREYGLRVGIKF
A
polypeptide(L)
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
sample
487
NEISSERIA MENINGITIDIS
562
ESCHERICHIA COLI
1
2.16
43
NONE
LIPIDIC CUBIC PHASE
18%(V/V) PEG400, 0.1 M POTASSIUM SULFATE, 0.05 M HEPES, PH 7.0
293
citation
exptl_crystal_grow
reflns
chem_comp_atom
chem_comp_bond
database_2
pdbx_database_status
pdbx_initial_refinement_model
repository
Initial release
Version format compliance
Version format compliance
Data collection
Database references
Experimental preparation
Data collection
Database references
Other
Refinement description
1
0
2007-10-23
1
1
2011-05-08
1
2
2011-07-13
1
3
2019-09-18
1
4
2023-12-13
_citation.journal_id_ISSN
_citation.page_last
_citation.pdbx_database_id_DOI
_citation.title
_exptl_crystal_grow.method
_exptl_crystal_grow.temp
_reflns.pdbx_Rmerge_I_obs
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_pdbx_database_status.status_code_sf
STRUCTURE OF THE OPCA ADHESION FROM NEISSERIA MENINGITIDIS DETERMINED BY CRYSTALLIZATION FROM THE CUBIC MESOPHASE
CRYSTAL STRUCTURE OF THE OPCA OUTER MEMBRANEADHESIN/INVASIN FROM NEISSERIA MENINGITIDIS
SHEET
DETERMINATION METHOD: DSSP
THE SHEETS PRESENTED AS "AA" IN EACH CHAIN ON SHEET RECORDS
BELOW IS ACTUALLY AN 10-STRANDED BARREL THIS IS REPRESENTED BY
A 11-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS
ARE IDENTICAL.
PDBE
Y
PDBE
2007-10-05
REL
REL
OCT
N-OCTANE
SO4
SULFATE ION
HOH
water
SULFATE ION (SO4): FROM CRYSTALLIZATION CONDITIONS
N-OCTANE (OCT): ORIGINATES FROM DETERGENT USED IN
CRYSTALLIZATION. DENSITY FOR HEADGROUP NOT OBSERVED.
1K24
PDB ENTRY 1K24
PDB
experimental model
OCT
1254
2
OCT
OCT
1254
A
SO4
1255
3
SO4
SO4
1255
A
HOH
2001
4
HOH
HOH
2001
A
HOH
2002
4
HOH
HOH
2002
A
HOH
2003
4
HOH
HOH
2003
A
HOH
2004
4
HOH
HOH
2004
A
HOH
2005
4
HOH
HOH
2005
A
HOH
2006
4
HOH
HOH
2006
A
HOH
2007
4
HOH
HOH
2007
A
HOH
2008
4
HOH
HOH
2008
A
HOH
2009
4
HOH
HOH
2009
A
HOH
2010
4
HOH
HOH
2010
A
HOH
2011
4
HOH
HOH
2011
A
HOH
2012
4
HOH
HOH
2012
A
HOH
2013
4
HOH
HOH
2013
A
HOH
2014
4
HOH
HOH
2014
A
HOH
2015
4
HOH
HOH
2015
A
HOH
2016
4
HOH
HOH
2016
A
HOH
2017
4
HOH
HOH
2017
A
HOH
2018
4
HOH
HOH
2018
A
HOH
2019
4
HOH
HOH
2019
A
HOH
2020
4
HOH
HOH
2020
A
HOH
2021
4
HOH
HOH
2021
A
HOH
2022
4
HOH
HOH
2022
A
HOH
2023
4
HOH
HOH
2023
A
HOH
2024
4
HOH
HOH
2024
A
HOH
2025
4
HOH
HOH
2025
A
HOH
2026
4
HOH
HOH
2026
A
HOH
2027
4
HOH
HOH
2027
A
HOH
2028
4
HOH
HOH
2028
A
HOH
2029
4
HOH
HOH
2029
A
HOH
2030
4
HOH
HOH
2030
A
HOH
2031
4
HOH
HOH
2031
A
HOH
2032
4
HOH
HOH
2032
A
HOH
2033
4
HOH
HOH
2033
A
HOH
2034
4
HOH
HOH
2034
A
HOH
2035
4
HOH
HOH
2035
A
HOH
2036
4
HOH
HOH
2036
A
HOH
2037
4
HOH
HOH
2037
A
HOH
2038
4
HOH
HOH
2038
A
HOH
2039
4
HOH
HOH
2039
A
HOH
2040
4
HOH
HOH
2040
A
HOH
2041
4
HOH
HOH
2041
A
HOH
2042
4
HOH
HOH
2042
A
HOH
2043
4
HOH
HOH
2043
A
HOH
2044
4
HOH
HOH
2044
A
HOH
2045
4
HOH
HOH
2045
A
HOH
2046
4
HOH
HOH
2046
A
HOH
2047
4
HOH
HOH
2047
A
HOH
2048
4
HOH
HOH
2048
A
HOH
2049
4
HOH
HOH
2049
A
HOH
2050
4
HOH
HOH
2050
A
HOH
2051
4
HOH
HOH
2051
A
HOH
2052
4
HOH
HOH
2052
A
HOH
2053
4
HOH
HOH
2053
A
HOH
2054
4
HOH
HOH
2054
A
HOH
2055
4
HOH
HOH
2055
A
HOH
2056
4
HOH
HOH
2056
A
HOH
2057
4
HOH
HOH
2057
A
HOH
2058
4
HOH
HOH
2058
A
HOH
2059
4
HOH
HOH
2059
A
HOH
2060
4
HOH
HOH
2060
A
HOH
2061
4
HOH
HOH
2061
A
HOH
2062
4
HOH
HOH
2062
A
HOH
2063
4
HOH
HOH
2063
A
HOH
2064
4
HOH
HOH
2064
A
HOH
2065
4
HOH
HOH
2065
A
HOH
2066
4
HOH
HOH
2066
A
HOH
2067
4
HOH
HOH
2067
A
HOH
2068
4
HOH
HOH
2068
A
HOH
2069
4
HOH
HOH
2069
A
HOH
2070
4
HOH
HOH
2070
A
HOH
2071
4
HOH
HOH
2071
A
HOH
2072
4
HOH
HOH
2072
A
HOH
2073
4
HOH
HOH
2073
A
HOH
2074
4
HOH
HOH
2074
A
HOH
2075
4
HOH
HOH
2075
A
HOH
2076
4
HOH
HOH
2076
A
HOH
2077
4
HOH
HOH
2077
A
HOH
2078
4
HOH
HOH
2078
A
HOH
2079
4
HOH
HOH
2079
A
HOH
2080
4
HOH
HOH
2080
A
HOH
2081
4
HOH
HOH
2081
A
HOH
2082
4
HOH
HOH
2082
A
HOH
2083
4
HOH
HOH
2083
A
HOH
2084
4
HOH
HOH
2084
A
HOH
2085
4
HOH
HOH
2085
A
HOH
2086
4
HOH
HOH
2086
A
HOH
2087
4
HOH
HOH
2087
A
HOH
2088
4
HOH
HOH
2088
A
HOH
2089
4
HOH
HOH
2089
A
HOH
2090
4
HOH
HOH
2090
A
HOH
2091
4
HOH
HOH
2091
A
HOH
2092
4
HOH
HOH
2092
A
HOH
2093
4
HOH
HOH
2093
A
HOH
2094
4
HOH
HOH
2094
A
HOH
2095
4
HOH
HOH
2095
A
HOH
2096
4
HOH
HOH
2096
A
HOH
2097
4
HOH
HOH
2097
A
HOH
2098
4
HOH
HOH
2098
A
HOH
2099
4
HOH
HOH
2099
A
HOH
2100
4
HOH
HOH
2100
A
HOH
2101
4
HOH
HOH
2101
A
HOH
2102
4
HOH
HOH
2102
A
HOH
2103
4
HOH
HOH
2103
A
HOH
2104
4
HOH
HOH
2104
A
HOH
2105
4
HOH
HOH
2105
A
HOH
2106
4
HOH
HOH
2106
A
HOH
2107
4
HOH
HOH
2107
A
HOH
2108
4
HOH
HOH
2108
A
HOH
2109
4
HOH
HOH
2109
A
HOH
2110
4
HOH
HOH
2110
A
HOH
2111
4
HOH
HOH
2111
A
HOH
2112
4
HOH
HOH
2112
A
HOH
2113
4
HOH
HOH
2113
A
HOH
2114
4
HOH
HOH
2114
A
HOH
2115
4
HOH
HOH
2115
A
HOH
2116
4
HOH
HOH
2116
A
HOH
2117
4
HOH
HOH
2117
A
HOH
2118
4
HOH
HOH
2118
A
HOH
2119
4
HOH
HOH
2119
A
HOH
2120
4
HOH
HOH
2120
A
n
1
1
A
n
2
2
A
n
3
3
A
n
4
4
A
n
5
5
A
n
6
6
A
ALA
7
n
7
ALA
7
A
ASN
8
n
8
ASN
8
A
GLU
9
n
9
GLU
9
A
PHE
10
n
10
PHE
10
A
THR
11
n
11
THR
11
A
VAL
12
n
12
VAL
12
A
HIS
13
n
13
HIS
13
A
THR
14
n
14
THR
14
A
ASP
15
n
15
ASP
15
A
LEU
16
n
16
LEU
16
A
SER
17
n
17
SER
17
A
SER
18
n
18
SER
18
A
ILE
19
n
19
ILE
19
A
SER
20
n
20
SER
20
A
SER
21
n
21
SER
21
A
THR
22
n
22
THR
22
A
ARG
23
n
23
ARG
23
A
ALA
24
n
24
ALA
24
A
PHE
25
n
25
PHE
25
A
LEU
26
n
26
LEU
26
A
LYS
27
n
27
LYS
27
A
GLU
28
n
28
GLU
28
A
LYS
29
n
29
LYS
29
A
HIS
30
n
30
HIS
30
A
LYS
31
n
31
LYS
31
A
ALA
32
n
32
ALA
32
A
ALA
33
n
33
ALA
33
A
LYS
34
n
34
LYS
34
A
HIS
35
n
35
HIS
35
A
ILE
36
n
36
ILE
36
A
GLY
37
n
37
GLY
37
A
VAL
38
n
38
VAL
38
A
ARG
39
n
39
ARG
39
A
ALA
40
n
40
ALA
40
A
ASP
41
n
41
ASP
41
A
ILE
42
n
42
ILE
42
A
PRO
43
n
43
PRO
43
A
PHE
44
n
44
PHE
44
A
ASP
45
n
45
ASP
45
A
ALA
46
n
46
ALA
46
A
ASN
47
n
47
ASN
47
A
GLN
48
n
48
GLN
48
A
GLY
49
n
49
GLY
49
A
ILE
50
n
50
ILE
50
A
ARG
51
n
51
ARG
51
A
LEU
52
n
52
LEU
52
A
GLU
53
n
53
GLU
53
A
ALA
54
n
54
ALA
54
A
GLY
55
n
55
GLY
55
A
PHE
56
n
56
PHE
56
A
GLY
57
n
57
GLY
57
A
ARG
58
n
58
ARG
58
A
SER
59
n
59
SER
59
A
LYS
60
n
60
LYS
60
A
LYS
61
n
61
LYS
61
A
ASN
62
n
62
ASN
62
A
ILE
63
n
63
ILE
63
A
ILE
64
n
64
ILE
64
A
ASN
65
n
65
ASN
65
A
LEU
66
n
66
LEU
66
A
GLU
67
n
67
GLU
67
A
THR
68
n
68
THR
68
A
ASP
69
n
69
ASP
69
A
GLU
70
n
70
GLU
70
A
ASN
71
n
71
ASN
71
A
LYS
72
n
72
LYS
72
A
LEU
73
n
73
LEU
73
A
GLY
74
n
74
GLY
74
A
LYS
75
n
75
LYS
75
A
THR
76
n
76
THR
76
A
LYS
77
n
77
LYS
77
A
ASN
78
n
78
ASN
78
A
VAL
79
n
79
VAL
79
A
LYS
80
n
80
LYS
80
A
LEU
81
n
81
LEU
81
A
PRO
82
n
82
PRO
82
A
THR
83
n
83
THR
83
A
GLY
84
n
84
GLY
84
A
VAL
85
n
85
VAL
85
A
PRO
86
n
86
PRO
86
A
GLU
87
n
87
GLU
87
A
ASN
88
n
88
ASN
88
A
ARG
89
n
89
ARG
89
A
ILE
90
n
90
ILE
90
A
ASP
91
n
91
ASP
91
A
LEU
92
n
92
LEU
92
A
TYR
93
n
93
TYR
93
A
THR
94
n
94
THR
94
A
GLY
95
n
95
GLY
95
A
TYR
96
n
96
TYR
96
A
THR
97
n
97
THR
97
A
TYR
98
n
98
TYR
98
A
THR
99
n
99
THR
99
A
GLN
100
n
100
GLN
100
A
THR
101
n
101
THR
101
A
LEU
102
n
102
LEU
102
A
SER
103
n
103
SER
103
A
ASP
104
n
104
ASP
104
A
SER
105
n
105
SER
105
A
LEU
106
n
106
LEU
106
A
ASN
107
n
107
ASN
107
A
PHE
108
n
108
PHE
108
A
ARG
109
n
109
ARG
109
A
VAL
110
n
110
VAL
110
A
GLY
111
n
111
GLY
111
A
ALA
112
n
112
ALA
112
A
GLY
113
n
113
GLY
113
A
LEU
114
n
114
LEU
114
A
GLY
115
n
115
GLY
115
A
PHE
116
n
116
PHE
116
A
GLU
117
n
117
GLU
117
A
SER
118
n
118
SER
118
A
SER
119
n
119
SER
119
A
LYS
120
n
120
LYS
120
A
ASP
121
n
121
ASP
121
A
SER
122
n
122
SER
122
A
ILE
123
n
123
ILE
123
A
n
124
124
A
n
125
125
A
n
126
126
A
n
127
127
A
n
128
128
A
n
129
129
A
LEU
130
n
130
LEU
130
A
HIS
131
n
131
HIS
131
A
SER
132
n
132
SER
132
A
SER
133
n
133
SER
133
A
ARG
134
n
134
ARG
134
A
GLN
135
n
135
GLN
135
A
SER
136
n
136
SER
136
A
TRP
137
n
137
TRP
137
A
LEU
138
n
138
LEU
138
A
ALA
139
n
139
ALA
139
A
LYS
140
n
140
LYS
140
A
VAL
141
n
141
VAL
141
A
HIS
142
n
142
HIS
142
A
ALA
143
n
143
ALA
143
A
ASP
144
n
144
ASP
144
A
LEU
145
n
145
LEU
145
A
LEU
146
n
146
LEU
146
A
SER
147
n
147
SER
147
A
GLN
148
n
148
GLN
148
A
LEU
149
n
149
LEU
149
A
GLY
150
n
150
GLY
150
A
ASN
151
n
151
ASN
151
A
GLY
152
n
152
GLY
152
A
TRP
153
n
153
TRP
153
A
TYR
154
n
154
TYR
154
A
ILE
155
n
155
ILE
155
A
ASN
156
n
156
ASN
156
A
PRO
157
n
157
PRO
157
A
TRP
158
n
158
TRP
158
A
SER
159
n
159
SER
159
A
GLU
160
n
160
GLU
160
A
VAL
161
n
161
VAL
161
A
LYS
162
n
162
LYS
162
A
PHE
163
n
163
PHE
163
A
ASP
164
n
164
ASP
164
A
LEU
165
n
165
LEU
165
A
ASN
166
n
166
ASN
166
A
SER
167
n
167
SER
167
A
ARG
168
n
168
ARG
168
A
TYR
169
n
169
TYR
169
A
LYS
170
n
170
LYS
170
A
LEU
171
n
171
LEU
171
A
ASN
172
n
172
ASN
172
A
THR
173
n
173
THR
173
A
n
174
174
A
n
175
175
A
n
176
176
A
n
177
177
A
n
178
178
A
n
179
179
A
n
180
180
A
ASP
181
n
181
ASP
181
A
ILE
182
n
182
ILE
182
A
ASN
183
n
183
ASN
183
A
GLN
184
n
184
GLN
184
A
LYS
185
n
185
LYS
185
A
THR
186
n
186
THR
186
A
ASN
187
n
187
ASN
187
A
GLY
188
n
188
GLY
188
A
TRP
189
n
189
TRP
189
A
GLY
190
n
190
GLY
190
A
PHE
191
n
191
PHE
191
A
GLY
192
n
192
GLY
192
A
LEU
193
n
193
LEU
193
A
GLY
194
n
194
GLY
194
A
ALA
195
n
195
ALA
195
A
ASN
196
n
196
ASN
196
A
ILE
197
n
197
ILE
197
A
GLY
198
n
198
GLY
198
A
LYS
199
n
199
LYS
199
A
LYS
200
n
200
LYS
200
A
LEU
201
n
201
LEU
201
A
GLY
202
n
202
GLY
202
A
n
203
203
A
n
204
204
A
ALA
205
n
205
ALA
205
A
SER
206
n
206
SER
206
A
ILE
207
n
207
ILE
207
A
GLU
208
n
208
GLU
208
A
ALA
209
n
209
ALA
209
A
GLY
210
n
210
GLY
210
A
PRO
211
n
211
PRO
211
A
PHE
212
n
212
PHE
212
A
TYR
213
n
213
TYR
213
A
LYS
214
n
214
LYS
214
A
GLN
215
n
215
GLN
215
A
ARG
216
n
216
ARG
216
A
THR
217
n
217
THR
217
A
TYR
218
n
218
TYR
218
A
LYS
219
n
219
LYS
219
A
GLU
220
n
220
GLU
220
A
SER
221
n
221
SER
221
A
GLY
222
n
222
GLY
222
A
GLU
223
n
223
GLU
223
A
PHE
224
n
224
PHE
224
A
SER
225
n
225
SER
225
A
n
226
226
A
n
227
227
A
n
228
228
A
n
229
229
A
n
230
230
A
n
231
231
A
n
232
232
A
VAL
233
n
233
VAL
233
A
SER
234
n
234
SER
234
A
LEU
235
n
235
LEU
235
A
THR
236
n
236
THR
236
A
ILE
237
n
237
ILE
237
A
PRO
238
n
238
PRO
238
A
LYS
239
n
239
LYS
239
A
THR
240
n
240
THR
240
A
SER
241
n
241
SER
241
A
ILE
242
n
242
ILE
242
A
ARG
243
n
243
ARG
243
A
GLU
244
n
244
GLU
244
A
TYR
245
n
245
TYR
245
A
GLY
246
n
246
GLY
246
A
LEU
247
n
247
LEU
247
A
ARG
248
n
248
ARG
248
A
VAL
249
n
249
VAL
249
A
GLY
250
n
250
GLY
250
A
ILE
251
n
251
ILE
251
A
LYS
252
n
252
LYS
252
A
PHE
253
n
253
PHE
253
A
software_defined_assembly
PQS
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
N
ARG
23
A
N
ARG
23
A
O
LEU
26
A
O
LEU
26
A
N
ILE
42
A
N
ILE
42
A
O
ILE
50
A
O
ILE
50
A
N
LYS
61
A
N
LYS
61
A
O
VAL
85
A
O
VAL
85
A
N
LEU
102
A
N
LEU
102
A
O
LEU
106
A
O
LEU
106
A
N
ASP
121
A
N
ASP
121
A
O
SER
132
A
O
SER
132
A
N
LEU
149
A
N
LEU
149
A
O
TRP
153
A
O
TRP
153
A
N
LEU
171
A
N
LEU
171
A
O
ILE
182
A
O
ILE
182
A
N
ASP
41
A
N
ASP
41
A
O
GLU
9
A
O
GLU
9
A
N
ILE
64
A
N
ILE
64
A
O
LYS
27
A
O
LYS
27
A
N
THR
97
A
N
THR
97
A
O
GLY
49
A
O
GLY
49
A
N
SER
122
A
N
SER
122
A
O
PRO
86
A
O
PRO
86
A
N
LEU
146
A
N
LEU
146
A
O
ASN
107
A
O
ASN
107
A
N
LYS
170
A
N
LYS
170
A
O
SER
133
A
O
SER
133
A
N
GLN
184
A
N
GLN
184
A
O
TYR
169
A
O
TYR
169
A
N
ASP
164
A
N
ASP
164
A
O
GLY
188
A
O
GLY
188
A
N
GLY
198
A
N
GLY
198
A
O
TYR
154
A
O
TYR
154
A
N
THR
217
A
N
THR
217
A
O
TRP
189
A
O
TRP
189
A
N
PHE
253
A
N
PHE
253
A
O
PHE
10
A
O
PHE
10
1
A
CG
LYS
80
A
CG
LYS
80
1
Y
1
A
CD
LYS
80
A
CD
LYS
80
1
Y
1
A
CE
LYS
80
A
CE
LYS
80
1
Y
1
A
NZ
LYS
80
A
NZ
LYS
80
1
Y
1
A
OG1
THR
173
A
OG1
THR
173
1
Y
1
A
CG2
THR
173
A
CG2
THR
173
1
Y
1
A
ALA
1
A
ALA
1
1
Y
1
A
GLN
2
A
GLN
2
1
Y
1
A
GLU
3
A
GLU
3
1
Y
1
A
LEU
4
A
LEU
4
1
Y
1
A
GLN
5
A
GLN
5
1
Y
1
A
THR
6
A
THR
6
1
Y
1
A
LYS
124
A
LYS
124
1
Y
1
A
THR
125
A
THR
125
1
Y
1
A
THR
126
A
THR
126
1
Y
1
A
LYS
127
A
LYS
127
1
Y
1
A
HIS
128
A
HIS
128
1
Y
1
A
THR
129
A
THR
129
1
Y
1
A
GLY
174
A
GLY
174
1
Y
1
A
VAL
175
A
VAL
175
1
Y
1
A
THR
176
A
THR
176
1
Y
1
A
ASN
177
A
ASN
177
1
Y
1
A
LEU
178
A
LEU
178
1
Y
1
A
LYS
179
A
LYS
179
1
Y
1
A
LYS
180
A
LYS
180
1
Y
1
A
GLU
203
A
GLU
203
1
Y
1
A
SER
204
A
SER
204
1
Y
1
A
VAL
226
A
VAL
226
1
Y
1
A
THR
227
A
THR
227
1
Y
1
A
THR
228
A
THR
228
1
Y
1
A
LYS
229
A
LYS
229
1
Y
1
A
SER
230
A
SER
230
1
Y
1
A
GLY
231
A
GLY
231
1
Y
1
A
ASP
232
A
ASP
232
1
Y
1
A
A
O
O
HOH
HOH
2107
2109
1.99
1
A
A
O
O
HOH
HOH
2005
2006
2.11
1
A
A
O
O
HOH
HOH
2065
2075
2.12
1
A
A
O
O
HOH
HOH
2082
2114
2.18
1
A
A
O
O
HOH
HOH
2105
2106
2.18
1
A
A
GLY
LYS
74
75
-112.27
1
A
ALA
24
58.02
-121.20
1
A
LEU
201
-105.02
75.99
20.83
-0.11000
0.00000
0.00000
0.71000
0.00000
-0.60000
0.933
0.899
HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS.
0.272
0.224
0.227
1.95
10.00
927
17043
5.200
98.2
8.889
0.135
RANDOM
1
THROUGHOUT
MOLECULAR REPLACEMENT
0.201
0.181
0.80
0.80
1.20
PDB ENTRY 1K24
MAXIMUM LIKELIHOOD
MASK
1.95
10.00
120
1900
13
0
1767
0.007
0.022
1811
1.150
1.953
2432
9.423
5.000
220
34.545
23.902
82
13.391
15.000
318
13.721
15.000
11
0.093
0.200
262
0.004
0.020
1346
0.236
0.300
690
0.314
0.500
1202
0.228
0.500
226
0.300
0.300
73
0.440
0.500
11
4.985
1.500
1131
6.208
2.000
1762
9.647
3.000
769
12.061
4.500
670
0.3050
0.2240
2.00
59
1218
20
1.95
20.00
2VDF
18131
2.0
0.099
1
13.10
4.8
98.8
0.49
1.95
2.06
2.70
1
4.7
99.8
refinement
REFMAC
5.2.0019
data reduction
MOSFLM
data scaling
SCALA
phasing
MOLREP
Structure of the OpcA adhesion from Neisseria meningitidis determined by crystallization from the cubic mesophase
1
N
N
2
N
N
3
N
N
4
N
N
A
THR
68
A
THR
68
HELX_P
A
LEU
73
A
LEU
73
1
1
6
MEMBRANE PROTEIN
INVASIN, ADHESIN, BETA BARREL, OUTER MEMBRANE, MEMBRANE PROTEIN
Q9AE79_NEIME
UNP
1
Q9AE79
2VDF
PDB
1
2VDF
1
252
2VDF
1
252
Q9AE79
A
1
1
252
253
253
2VDF
253
253
2VDF
A
2
253
253
1
SER
conflict
GLY
37
2VDF
A
Q9AE79
UNP
37
37
28
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
parallel
anti-parallel
anti-parallel
A
GLU
9
A
GLU
9
A
ARG
23
A
ARG
23
A
LEU
26
A
LEU
26
A
PRO
43
A
PRO
43
A
GLN
48
A
GLN
48
A
ASN
65
A
ASN
65
A
VAL
85
A
VAL
85
A
SER
103
A
SER
103
A
LEU
106
A
LEU
106
A
SER
122
A
SER
122
A
HIS
131
A
HIS
131
A
GLY
150
A
GLY
150
A
TRP
153
A
TRP
153
A
LEU
171
A
LEU
171
A
ILE
182
A
ILE
182
A
LYS
185
A
LYS
185
A
LEU
26
A
LEU
26
A
PRO
43
A
PRO
43
A
GLU
9
A
GLU
9
A
ARG
23
A
ARG
23
A
GLN
48
A
GLN
48
A
ASN
65
A
ASN
65
A
LEU
26
A
LEU
26
A
PRO
43
A
PRO
43
A
VAL
85
A
VAL
85
A
SER
103
A
SER
103
A
GLN
48
A
GLN
48
A
ASN
65
A
ASN
65
A
LEU
106
A
LEU
106
A
SER
122
A
SER
122
A
VAL
85
A
VAL
85
A
SER
103
A
SER
103
A
HIS
131
A
HIS
131
A
GLY
150
A
GLY
150
A
LEU
106
A
LEU
106
A
SER
122
A
SER
122
A
TRP
153
A
TRP
153
A
LEU
171
A
LEU
171
A
HIS
131
A
HIS
131
A
GLY
150
A
GLY
150
A
ILE
182
A
ILE
182
A
LYS
185
A
LYS
185
A
TRP
153
A
TRP
153
A
LEU
171
A
LEU
171
A
GLY
188
A
GLY
188
A
LYS
200
A
LYS
200
A
TRP
153
A
TRP
153
A
LEU
171
A
LEU
171
A
SER
206
A
SER
206
A
TYR
218
A
TYR
218
A
GLY
188
A
GLY
188
A
LYS
200
A
LYS
200
A
THR
240
A
THR
240
A
PHE
253
A
PHE
253
A
GLU
9
A
GLU
9
A
ARG
23
A
ARG
23
BINDING SITE FOR RESIDUE OCT A1254
Software
2
BINDING SITE FOR RESIDUE SO4 A1255
Software
5
A
ILE
207
A
ILE
207
2
1_555
A
ILE
251
A
ILE
251
2
1_555
A
ASN
47
A
ASN
47
5
1_555
A
GLN
100
A
GLN
100
5
1_555
A
THR
101
A
THR
101
5
1_555
A
LYS
120
A
LYS
120
5
1_555
A
HOH
2120
D
HOH
5
1_555
19
P 21 21 21