0.023729
0.000000
0.006038
0.000000
0.024102
0.000000
0.000000
0.000000
0.014319
0.00000
0.00000
0.00000
Duda, D.
McKenna, R.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
2
90.00
104.28
90.00
42.142
41.490
72.063
C4 H6 N2
82.104
4-METHYLIMIDAZOLE
non-polymer
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
Hg 2
200.590
MERCURY (II) ION
non-polymer
C6 H10 N3 O2 1
156.162
y
HISTIDINE
L-peptide linking
H2 O
18.015
WATER
non-polymer
C6 H13 N O2
131.173
y
ISOLEUCINE
L-peptide linking
C6 H13 N O2
131.173
y
LEUCINE
L-peptide linking
C6 H15 N2 O2 1
147.195
y
LYSINE
L-peptide linking
C5 H11 N O2 S
149.211
y
METHIONINE
L-peptide linking
C9 H11 N O2
165.189
y
PHENYLALANINE
L-peptide linking
C5 H9 N O2
115.130
y
PROLINE
L-peptide linking
C3 H7 N O3
105.093
y
SERINE
L-peptide linking
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
Zn 2
65.409
ZINC ION
non-polymer
Y
1
N
C
Y
2
N
N
Y
3
N
C
Y
4
N
C
Y
5
N
N
N
6
N
C
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
N
N
14
S
C
N
15
N
C
N
16
N
O
N
17
N
C
N
18
N
O
N
19
N
H
N
20
N
H
N
21
N
H
N
22
N
H
N
23
N
H
N
24
N
H
N
25
N
H
N
26
N
N
N
27
S
C
N
28
N
C
N
29
N
O
N
30
N
C
N
31
N
C
N
32
N
C
N
33
N
N
N
34
N
C
N
35
N
N
N
36
N
N
N
37
N
O
N
38
N
H
N
39
N
H
N
40
N
H
N
41
N
H
N
42
N
H
N
43
N
H
N
44
N
H
N
45
N
H
N
46
N
H
N
47
N
H
N
48
N
H
N
49
N
H
N
50
N
H
N
51
N
H
N
52
N
H
N
53
N
N
N
54
S
C
N
55
N
C
N
56
N
O
N
57
N
C
N
58
N
C
N
59
N
O
N
60
N
N
N
61
N
O
N
62
N
H
N
63
N
H
N
64
N
H
N
65
N
H
N
66
N
H
N
67
N
H
N
68
N
H
N
69
N
H
N
70
N
N
N
71
S
C
N
72
N
C
N
73
N
O
N
74
N
C
N
75
N
C
N
76
N
O
N
77
N
O
N
78
N
O
N
79
N
H
N
80
N
H
N
81
N
H
N
82
N
H
N
83
N
H
N
84
N
H
N
85
N
H
N
86
N
N
N
87
R
C
N
88
N
C
N
89
N
O
N
90
N
C
N
91
N
S
N
92
N
O
N
93
N
H
N
94
N
H
N
95
N
H
N
96
N
H
N
97
N
H
N
98
N
H
N
99
N
H
N
100
N
N
N
101
S
C
N
102
N
C
N
103
N
O
N
104
N
C
N
105
N
C
N
106
N
C
N
107
N
O
N
108
N
N
N
109
N
O
N
110
N
H
N
111
N
H
N
112
N
H
N
113
N
H
N
114
N
H
N
115
N
H
N
116
N
H
N
117
N
H
N
118
N
H
N
119
N
H
N
120
N
N
N
121
S
C
N
122
N
C
N
123
N
O
N
124
N
C
N
125
N
C
N
126
N
C
N
127
N
O
N
128
N
O
N
129
N
O
N
130
N
H
N
131
N
H
N
132
N
H
N
133
N
H
N
134
N
H
N
135
N
H
N
136
N
H
N
137
N
H
N
138
N
H
N
139
N
N
N
140
N
C
N
141
N
C
N
142
N
O
N
143
N
O
N
144
N
H
N
145
N
H
N
146
N
H
N
147
N
H
N
148
N
H
N
149
N
HG
N
150
N
N
N
151
S
C
N
152
N
C
N
153
N
O
N
154
N
C
Y
155
N
C
Y
156
N
N
Y
157
N
C
Y
158
N
C
Y
159
N
N
N
160
N
O
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
H
N
170
N
H
N
171
N
O
N
172
N
H
N
173
N
H
N
174
N
N
N
175
S
C
N
176
N
C
N
177
N
O
N
178
S
C
N
179
N
C
N
180
N
C
N
181
N
C
N
182
N
O
N
183
N
H
N
184
N
H
N
185
N
H
N
186
N
H
N
187
N
H
N
188
N
H
N
189
N
H
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
N
N
197
S
C
N
198
N
C
N
199
N
O
N
200
N
C
N
201
N
C
N
202
N
C
N
203
N
C
N
204
N
O
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
H
N
217
N
H
N
218
N
N
N
219
S
C
N
220
N
C
N
221
N
O
N
222
N
C
N
223
N
C
N
224
N
C
N
225
N
C
N
226
N
N
N
227
N
O
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
H
N
243
N
N
N
244
S
C
N
245
N
C
N
246
N
O
N
247
N
C
N
248
N
C
N
249
N
S
N
250
N
C
N
251
N
O
N
252
N
H
N
253
N
H
N
254
N
H
N
255
N
H
N
256
N
H
N
257
N
H
N
258
N
H
N
259
N
H
N
260
N
H
N
261
N
H
N
262
N
H
N
263
N
N
N
264
S
C
N
265
N
C
N
266
N
O
N
267
N
C
Y
268
N
C
Y
269
N
C
Y
270
N
C
Y
271
N
C
Y
272
N
C
Y
273
N
C
N
274
N
O
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
H
N
283
N
H
N
284
N
H
N
285
N
H
N
286
N
N
N
287
S
C
N
288
N
C
N
289
N
O
N
290
N
C
N
291
N
C
N
292
N
C
N
293
N
O
N
294
N
H
N
295
N
H
N
296
N
H
N
297
N
H
N
298
N
H
N
299
N
H
N
300
N
H
N
301
N
H
N
302
N
H
N
303
N
N
N
304
S
C
N
305
N
C
N
306
N
O
N
307
N
C
N
308
N
O
N
309
N
O
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
N
N
318
S
C
N
319
N
C
N
320
N
O
N
321
R
C
N
322
N
O
N
323
N
C
N
324
N
O
N
325
N
H
N
326
N
H
N
327
N
H
N
328
N
H
N
329
N
H
N
330
N
H
N
331
N
H
N
332
N
H
N
333
N
H
N
334
N
N
N
335
S
C
N
336
N
C
N
337
N
O
N
338
N
C
Y
339
N
C
Y
340
N
C
Y
341
N
C
Y
342
N
N
Y
343
N
C
Y
344
N
C
Y
345
N
C
Y
346
N
C
Y
347
N
C
N
348
N
O
N
349
N
H
N
350
N
H
N
351
N
H
N
352
N
H
N
353
N
H
N
354
N
H
N
355
N
H
N
356
N
H
N
357
N
H
N
358
N
H
N
359
N
H
N
360
N
H
N
361
N
N
N
362
S
C
N
363
N
C
N
364
N
O
N
365
N
C
Y
366
N
C
Y
367
N
C
Y
368
N
C
Y
369
N
C
Y
370
N
C
Y
371
N
C
N
372
N
O
N
373
N
O
N
374
N
H
N
375
N
H
N
376
N
H
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
N
N
386
S
C
N
387
N
C
N
388
N
O
N
389
N
C
N
390
N
C
N
391
N
C
N
392
N
O
N
393
N
H
N
394
N
H
N
395
N
H
N
396
N
H
N
397
N
H
N
398
N
H
N
399
N
H
N
400
N
H
N
401
N
H
N
402
N
H
N
403
N
H
N
404
N
ZN
Y
1
N
sing
Y
2
N
doub
N
3
N
sing
Y
4
N
doub
Y
5
N
sing
N
6
N
sing
Y
7
N
sing
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
doub
N
32
N
sing
N
33
N
sing
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
sing
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
doub
N
58
N
sing
N
59
N
sing
N
60
N
sing
N
61
N
sing
N
62
N
doub
N
63
N
sing
N
64
N
sing
N
65
N
sing
N
66
N
sing
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
doub
N
74
N
sing
N
75
N
sing
N
76
N
sing
N
77
N
sing
N
78
N
doub
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
doub
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
sing
N
96
N
sing
N
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
sing
N
104
N
sing
N
105
N
sing
N
106
N
sing
N
107
N
sing
N
108
N
sing
N
109
N
doub
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
sing
N
117
N
sing
N
118
N
sing
N
119
N
sing
N
120
N
doub
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
doub
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
sing
N
136
N
sing
N
137
N
sing
N
138
N
doub
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
Y
152
N
sing
Y
153
N
doub
Y
154
N
doub
N
155
N
sing
Y
156
N
sing
N
157
N
sing
Y
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
sing
N
167
N
sing
N
168
N
sing
N
169
N
sing
N
170
N
doub
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
sing
N
188
N
sing
N
189
N
sing
N
190
N
sing
N
191
N
doub
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
doub
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
N
241
N
sing
N
242
N
sing
N
243
N
sing
N
244
N
sing
N
245
N
sing
N
246
N
sing
N
247
N
sing
N
248
N
sing
N
249
N
sing
N
250
N
sing
N
251
N
sing
N
252
N
sing
N
253
N
sing
N
254
N
sing
N
255
N
doub
N
256
N
sing
N
257
N
sing
N
258
N
sing
N
259
N
sing
Y
260
N
doub
Y
261
N
sing
Y
262
N
sing
N
263
N
sing
Y
264
N
doub
N
265
N
sing
Y
266
N
doub
N
267
N
sing
Y
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
doub
N
279
N
sing
N
280
N
sing
N
281
N
sing
N
282
N
sing
N
283
N
sing
N
284
N
sing
N
285
N
sing
N
286
N
sing
N
287
N
sing
N
288
N
sing
N
289
N
sing
N
290
N
sing
N
291
N
sing
N
292
N
sing
N
293
N
sing
N
294
N
sing
N
295
N
doub
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
doub
N
309
N
sing
N
310
N
sing
N
311
N
sing
N
312
N
sing
N
313
N
sing
N
314
N
sing
N
315
N
sing
N
316
N
sing
N
317
N
sing
N
318
N
sing
N
319
N
sing
N
320
N
sing
N
321
N
sing
N
322
N
sing
N
323
N
sing
N
324
N
doub
N
325
N
sing
N
326
N
sing
N
327
N
sing
N
328
N
sing
Y
329
N
doub
Y
330
N
sing
Y
331
N
sing
N
332
N
sing
Y
333
N
doub
Y
334
N
sing
Y
335
N
sing
N
336
N
sing
Y
337
N
sing
Y
338
N
doub
N
339
N
sing
Y
340
N
doub
N
341
N
sing
Y
342
N
sing
N
343
N
sing
N
344
N
sing
N
345
N
sing
N
346
N
sing
N
347
N
sing
N
348
N
sing
N
349
N
sing
N
350
N
sing
N
351
N
sing
N
352
N
doub
N
353
N
sing
N
354
N
sing
N
355
N
sing
N
356
N
sing
Y
357
N
doub
Y
358
N
sing
Y
359
N
sing
N
360
N
sing
Y
361
N
doub
N
362
N
sing
Y
363
N
doub
N
364
N
sing
Y
365
N
sing
N
366
N
sing
N
367
N
sing
N
368
N
sing
N
369
N
sing
N
370
N
sing
N
371
N
sing
N
372
N
sing
N
373
N
sing
N
374
N
sing
N
375
N
sing
N
376
N
doub
N
377
N
sing
N
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
US
Biochemistry
BICHAW
0033
0006-2960
40
1741
1748
10.1021/bi002295z
11327835
Structural and kinetic analysis of the chemical rescue of the proton transfer function of carbonic anhydrase II.
2001
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
227
1192
1204
Structure of Native and Apo Carbonic Anhydrase II and Structure of Some of its Anion-ligand Complexes.
1992
10.2210/pdb1g0e/pdb
pdb_00001g0e
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
100.0
1
IMAGE PLATE
2000-03-28
RIGAKU RAXIS
SINGLE WAVELENGTH
M
x-ray
1
1.5418
1.0
1.5418
ROTATING ANODE
RIGAKU
29221.992
CARBONIC ANHYDRASE II
4.2.1.1
H64A
1
man
polymer
65.409
ZINC ION
1
syn
non-polymer
200.590
MERCURY (II) ION
1
syn
non-polymer
82.104
4-METHYLIMIDAZOLE
1
syn
non-polymer
18.015
water
318
nat
water
no
no
MSHHWGYGKHNGPEHWHKDFPIAKGERQSPVDIDTHTAKYDPSLKPLSVSYDQATSLRILNNGAAFNVEFDDSQDKAVLK
GGPLDGTYRLIQFHFHWGSLDGQGSEHTVDKKKYAAELHLVHWNTKYGDFGKAVQQPDGLAVLGIFLKVGSAKPGLQKVV
DVLDSIKTKGKSADFTNFDPRGLLPESLDYWTYPGSLTTPPLLECVTWIVLKEPISVSSEQVLKFRKLNFNGEGEPEELM
VDNWRPAQPLKNRQIKASFK
MSHHWGYGKHNGPEHWHKDFPIAKGERQSPVDIDTHTAKYDPSLKPLSVSYDQATSLRILNNGAAFNVEFDDSQDKAVLK
GGPLDGTYRLIQFHFHWGSLDGQGSEHTVDKKKYAAELHLVHWNTKYGDFGKAVQQPDGLAVLGIFLKVGSAKPGLQKVV
DVLDSIKTKGKSADFTNFDPRGLLPESLDYWTYPGSLTTPPLLECVTWIVLKEPISVSSEQVLKFRKLNFNGEGEPEELM
VDNWRPAQPLKNRQIKASFK
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
n
n
n
n
n
n
n
human
Homo
BLOOD
Escherichia
sample
9606
Homo sapiens
562
Escherichia coli
PET
1
2.09
41.09
VAPOR DIFFUSION, HANGING DROP
7.8
Ammonium Sulfate, Mercury Chloride, Tris HCl, pH 7.8, VAPOR DIFFUSION, HANGING DROP, temperature 277K
277
software
database_2
pdbx_struct_conn_angle
struct_conn
struct_ref_seq_dif
struct_site
chem_comp_atom
chem_comp_bond
repository
Initial release
Version format compliance
Version format compliance
Refinement description
Database references
Derived calculations
Data collection
1
0
2000-10-18
1
1
2007-10-16
1
2
2011-07-13
1
3
2017-10-04
1
4
2021-11-03
1
5
2024-02-07
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_pdbx_struct_conn_angle.ptnr1_auth_comp_id
_pdbx_struct_conn_angle.ptnr1_auth_seq_id
_pdbx_struct_conn_angle.ptnr1_label_asym_id
_pdbx_struct_conn_angle.ptnr1_label_atom_id
_pdbx_struct_conn_angle.ptnr1_label_comp_id
_pdbx_struct_conn_angle.ptnr1_label_seq_id
_pdbx_struct_conn_angle.ptnr3_auth_comp_id
_pdbx_struct_conn_angle.ptnr3_auth_seq_id
_pdbx_struct_conn_angle.ptnr3_label_asym_id
_pdbx_struct_conn_angle.ptnr3_label_atom_id
_pdbx_struct_conn_angle.ptnr3_label_comp_id
_pdbx_struct_conn_angle.ptnr3_label_seq_id
_pdbx_struct_conn_angle.value
_struct_conn.pdbx_dist_value
_struct_conn.ptnr1_auth_comp_id
_struct_conn.ptnr1_auth_seq_id
_struct_conn.ptnr1_label_asym_id
_struct_conn.ptnr1_label_atom_id
_struct_conn.ptnr1_label_comp_id
_struct_conn.ptnr1_label_seq_id
_struct_conn.ptnr2_auth_comp_id
_struct_conn.ptnr2_auth_seq_id
_struct_conn.ptnr2_label_asym_id
_struct_conn.ptnr2_label_atom_id
_struct_conn.ptnr2_label_comp_id
_struct_conn.ptnr2_label_seq_id
_struct_ref_seq_dif.details
_struct_site.pdbx_auth_asym_id
_struct_site.pdbx_auth_comp_id
_struct_site.pdbx_auth_seq_id
HUMAN CARBONIC ANHYDRASE II without 4-METHYLIMIDAZOLE
RCSB
Y
RCSB
2000-10-06
REL
REL
ZN
ZINC ION
HG
MERCURY (II) ION
4MZ
4-METHYLIMIDAZOLE
HOH
water
THE LIGAND 4MZ IS CALLED 4MI IN THE PUBLICATION.
RESIDUES 125 AND 127 ARE COVALENTLY BOUND.
ZN2
262
2
ZN
ZN
262
A
HG2
263
3
HG
HG
263
A
4MI
264
4
4MZ
4MZ
264
A
HOH
265
5
HOH
HOH
265
A
HOH
266
5
HOH
HOH
266
A
HOH
267
5
HOH
HOH
267
A
HOH
268
5
HOH
HOH
268
A
HOH
269
5
HOH
HOH
269
A
HOH
270
5
HOH
HOH
270
A
HOH
271
5
HOH
HOH
271
A
HOH
272
5
HOH
HOH
272
A
HOH
273
5
HOH
HOH
273
A
HOH
274
5
HOH
HOH
274
A
HOH
275
5
HOH
HOH
275
A
HOH
276
5
HOH
HOH
276
A
HOH
277
5
HOH
HOH
277
A
HOH
278
5
HOH
HOH
278
A
HOH
279
5
HOH
HOH
279
A
HOH
280
5
HOH
HOH
280
A
HOH
281
5
HOH
HOH
281
A
HOH
282
5
HOH
HOH
282
A
HOH
283
5
HOH
HOH
283
A
HOH
284
5
HOH
HOH
284
A
HOH
285
5
HOH
HOH
285
A
HOH
286
5
HOH
HOH
286
A
HOH
287
5
HOH
HOH
287
A
HOH
288
5
HOH
HOH
288
A
HOH
289
5
HOH
HOH
289
A
HOH
290
5
HOH
HOH
290
A
HOH
291
5
HOH
HOH
291
A
HOH
292
5
HOH
HOH
292
A
HOH
293
5
HOH
HOH
293
A
HOH
294
5
HOH
HOH
294
A
HOH
295
5
HOH
HOH
295
A
HOH
296
5
HOH
HOH
296
A
HOH
297
5
HOH
HOH
297
A
HOH
298
5
HOH
HOH
298
A
HOH
299
5
HOH
HOH
299
A
HOH
300
5
HOH
HOH
300
A
HOH
301
5
HOH
HOH
301
A
HOH
302
5
HOH
HOH
302
A
HOH
303
5
HOH
HOH
303
A
HOH
304
5
HOH
HOH
304
A
HOH
305
5
HOH
HOH
305
A
HOH
306
5
HOH
HOH
306
A
HOH
307
5
HOH
HOH
307
A
HOH
308
5
HOH
HOH
308
A
HOH
309
5
HOH
HOH
309
A
HOH
310
5
HOH
HOH
310
A
HOH
311
5
HOH
HOH
311
A
HOH
312
5
HOH
HOH
312
A
HOH
313
5
HOH
HOH
313
A
HOH
314
5
HOH
HOH
314
A
HOH
315
5
HOH
HOH
315
A
HOH
316
5
HOH
HOH
316
A
HOH
317
5
HOH
HOH
317
A
HOH
318
5
HOH
HOH
318
A
HOH
319
5
HOH
HOH
319
A
HOH
320
5
HOH
HOH
320
A
HOH
321
5
HOH
HOH
321
A
HOH
322
5
HOH
HOH
322
A
HOH
323
5
HOH
HOH
323
A
HOH
324
5
HOH
HOH
324
A
HOH
325
5
HOH
HOH
325
A
HOH
326
5
HOH
HOH
326
A
HOH
327
5
HOH
HOH
327
A
HOH
328
5
HOH
HOH
328
A
HOH
329
5
HOH
HOH
329
A
HOH
330
5
HOH
HOH
330
A
HOH
331
5
HOH
HOH
331
A
HOH
332
5
HOH
HOH
332
A
HOH
333
5
HOH
HOH
333
A
HOH
334
5
HOH
HOH
334
A
HOH
335
5
HOH
HOH
335
A
HOH
336
5
HOH
HOH
336
A
HOH
337
5
HOH
HOH
337
A
HOH
338
5
HOH
HOH
338
A
HOH
339
5
HOH
HOH
339
A
HOH
340
5
HOH
HOH
340
A
HOH
341
5
HOH
HOH
341
A
HOH
342
5
HOH
HOH
342
A
HOH
343
5
HOH
HOH
343
A
HOH
344
5
HOH
HOH
344
A
HOH
345
5
HOH
HOH
345
A
HOH
346
5
HOH
HOH
346
A
HOH
347
5
HOH
HOH
347
A
HOH
348
5
HOH
HOH
348
A
HOH
349
5
HOH
HOH
349
A
HOH
350
5
HOH
HOH
350
A
HOH
351
5
HOH
HOH
351
A
HOH
352
5
HOH
HOH
352
A
HOH
353
5
HOH
HOH
353
A
HOH
354
5
HOH
HOH
354
A
HOH
355
5
HOH
HOH
355
A
HOH
356
5
HOH
HOH
356
A
HOH
357
5
HOH
HOH
357
A
HOH
358
5
HOH
HOH
358
A
HOH
359
5
HOH
HOH
359
A
HOH
360
5
HOH
HOH
360
A
HOH
361
5
HOH
HOH
361
A
HOH
362
5
HOH
HOH
362
A
HOH
363
5
HOH
HOH
363
A
HOH
364
5
HOH
HOH
364
A
HOH
365
5
HOH
HOH
365
A
HOH
366
5
HOH
HOH
366
A
HOH
367
5
HOH
HOH
367
A
HOH
368
5
HOH
HOH
368
A
HOH
369
5
HOH
HOH
369
A
HOH
370
5
HOH
HOH
370
A
HOH
371
5
HOH
HOH
371
A
HOH
372
5
HOH
HOH
372
A
HOH
373
5
HOH
HOH
373
A
HOH
374
5
HOH
HOH
374
A
HOH
375
5
HOH
HOH
375
A
HOH
376
5
HOH
HOH
376
A
HOH
377
5
HOH
HOH
377
A
HOH
378
5
HOH
HOH
378
A
HOH
379
5
HOH
HOH
379
A
HOH
380
5
HOH
HOH
380
A
HOH
381
5
HOH
HOH
381
A
HOH
382
5
HOH
HOH
382
A
HOH
383
5
HOH
HOH
383
A
HOH
384
5
HOH
HOH
384
A
HOH
385
5
HOH
HOH
385
A
HOH
386
5
HOH
HOH
386
A
HOH
387
5
HOH
HOH
387
A
HOH
388
5
HOH
HOH
388
A
HOH
389
5
HOH
HOH
389
A
HOH
390
5
HOH
HOH
390
A
HOH
391
5
HOH
HOH
391
A
HOH
392
5
HOH
HOH
392
A
HOH
393
5
HOH
HOH
393
A
HOH
394
5
HOH
HOH
394
A
HOH
395
5
HOH
HOH
395
A
HOH
396
5
HOH
HOH
396
A
HOH
397
5
HOH
HOH
397
A
HOH
398
5
HOH
HOH
398
A
HOH
399
5
HOH
HOH
399
A
HOH
400
5
HOH
HOH
400
A
HOH
401
5
HOH
HOH
401
A
HOH
402
5
HOH
HOH
402
A
HOH
403
5
HOH
HOH
403
A
HOH
404
5
HOH
HOH
404
A
HOH
405
5
HOH
HOH
405
A
HOH
406
5
HOH
HOH
406
A
HOH
407
5
HOH
HOH
407
A
HOH
408
5
HOH
HOH
408
A
HOH
409
5
HOH
HOH
409
A
HOH
410
5
HOH
HOH
410
A
HOH
411
5
HOH
HOH
411
A
HOH
412
5
HOH
HOH
412
A
HOH
413
5
HOH
HOH
413
A
HOH
414
5
HOH
HOH
414
A
HOH
415
5
HOH
HOH
415
A
HOH
416
5
HOH
HOH
416
A
HOH
417
5
HOH
HOH
417
A
HOH
418
5
HOH
HOH
418
A
HOH
419
5
HOH
HOH
419
A
HOH
420
5
HOH
HOH
420
A
HOH
421
5
HOH
HOH
421
A
HOH
422
5
HOH
HOH
422
A
HOH
423
5
HOH
HOH
423
A
HOH
424
5
HOH
HOH
424
A
HOH
425
5
HOH
HOH
425
A
HOH
426
5
HOH
HOH
426
A
HOH
427
5
HOH
HOH
427
A
HOH
428
5
HOH
HOH
428
A
HOH
429
5
HOH
HOH
429
A
HOH
430
5
HOH
HOH
430
A
HOH
431
5
HOH
HOH
431
A
HOH
432
5
HOH
HOH
432
A
HOH
433
5
HOH
HOH
433
A
HOH
434
5
HOH
HOH
434
A
HOH
435
5
HOH
HOH
435
A
HOH
436
5
HOH
HOH
436
A
HOH
437
5
HOH
HOH
437
A
HOH
438
5
HOH
HOH
438
A
HOH
439
5
HOH
HOH
439
A
HOH
440
5
HOH
HOH
440
A
HOH
441
5
HOH
HOH
441
A
HOH
442
5
HOH
HOH
442
A
HOH
443
5
HOH
HOH
443
A
HOH
444
5
HOH
HOH
444
A
HOH
445
5
HOH
HOH
445
A
HOH
446
5
HOH
HOH
446
A
HOH
447
5
HOH
HOH
447
A
HOH
448
5
HOH
HOH
448
A
HOH
449
5
HOH
HOH
449
A
HOH
450
5
HOH
HOH
450
A
HOH
451
5
HOH
HOH
451
A
HOH
452
5
HOH
HOH
452
A
HOH
453
5
HOH
HOH
453
A
HOH
454
5
HOH
HOH
454
A
HOH
455
5
HOH
HOH
455
A
HOH
456
5
HOH
HOH
456
A
HOH
457
5
HOH
HOH
457
A
HOH
458
5
HOH
HOH
458
A
HOH
459
5
HOH
HOH
459
A
HOH
460
5
HOH
HOH
460
A
HOH
461
5
HOH
HOH
461
A
HOH
462
5
HOH
HOH
462
A
HOH
463
5
HOH
HOH
463
A
HOH
464
5
HOH
HOH
464
A
HOH
465
5
HOH
HOH
465
A
HOH
466
5
HOH
HOH
466
A
HOH
467
5
HOH
HOH
467
A
HOH
468
5
HOH
HOH
468
A
HOH
469
5
HOH
HOH
469
A
HOH
470
5
HOH
HOH
470
A
HOH
471
5
HOH
HOH
471
A
HOH
472
5
HOH
HOH
472
A
HOH
473
5
HOH
HOH
473
A
HOH
474
5
HOH
HOH
474
A
HOH
475
5
HOH
HOH
475
A
HOH
476
5
HOH
HOH
476
A
HOH
477
5
HOH
HOH
477
A
HOH
478
5
HOH
HOH
478
A
HOH
479
5
HOH
HOH
479
A
HOH
480
5
HOH
HOH
480
A
HOH
481
5
HOH
HOH
481
A
HOH
482
5
HOH
HOH
482
A
HOH
483
5
HOH
HOH
483
A
HOH
484
5
HOH
HOH
484
A
HOH
485
5
HOH
HOH
485
A
HOH
486
5
HOH
HOH
486
A
HOH
487
5
HOH
HOH
487
A
HOH
488
5
HOH
HOH
488
A
HOH
489
5
HOH
HOH
489
A
HOH
490
5
HOH
HOH
490
A
HOH
491
5
HOH
HOH
491
A
HOH
492
5
HOH
HOH
492
A
HOH
493
5
HOH
HOH
493
A
HOH
494
5
HOH
HOH
494
A
HOH
495
5
HOH
HOH
495
A
HOH
496
5
HOH
HOH
496
A
HOH
497
5
HOH
HOH
497
A
HOH
498
5
HOH
HOH
498
A
HOH
499
5
HOH
HOH
499
A
HOH
500
5
HOH
HOH
500
A
HOH
501
5
HOH
HOH
501
A
HOH
502
5
HOH
HOH
502
A
HOH
503
5
HOH
HOH
503
A
HOH
504
5
HOH
HOH
504
A
HOH
505
5
HOH
HOH
505
A
HOH
506
5
HOH
HOH
506
A
HOH
507
5
HOH
HOH
507
A
HOH
508
5
HOH
HOH
508
A
HOH
509
5
HOH
HOH
509
A
HOH
510
5
HOH
HOH
510
A
HOH
511
5
HOH
HOH
511
A
HOH
512
5
HOH
HOH
512
A
HOH
513
5
HOH
HOH
513
A
HOH
514
5
HOH
HOH
514
A
HOH
515
5
HOH
HOH
515
A
HOH
516
5
HOH
HOH
516
A
HOH
517
5
HOH
HOH
517
A
HOH
518
5
HOH
HOH
518
A
HOH
519
5
HOH
HOH
519
A
HOH
520
5
HOH
HOH
520
A
HOH
521
5
HOH
HOH
521
A
HOH
522
5
HOH
HOH
522
A
HOH
523
5
HOH
HOH
523
A
HOH
524
5
HOH
HOH
524
A
HOH
525
5
HOH
HOH
525
A
HOH
526
5
HOH
HOH
526
A
HOH
527
5
HOH
HOH
527
A
HOH
528
5
HOH
HOH
528
A
HOH
529
5
HOH
HOH
529
A
HOH
530
5
HOH
HOH
530
A
HOH
531
5
HOH
HOH
531
A
HOH
532
5
HOH
HOH
532
A
HOH
533
5
HOH
HOH
533
A
HOH
534
5
HOH
HOH
534
A
HOH
535
5
HOH
HOH
535
A
HOH
536
5
HOH
HOH
536
A
HOH
537
5
HOH
HOH
537
A
HOH
538
5
HOH
HOH
538
A
HOH
539
5
HOH
HOH
539
A
HOH
540
5
HOH
HOH
540
A
HOH
541
5
HOH
HOH
541
A
HOH
542
5
HOH
HOH
542
A
HOH
543
5
HOH
HOH
543
A
HOH
544
5
HOH
HOH
544
A
HOH
545
5
HOH
HOH
545
A
HOH
546
5
HOH
HOH
546
A
HOH
547
5
HOH
HOH
547
A
HOH
548
5
HOH
HOH
548
A
HOH
549
5
HOH
HOH
549
A
HOH
550
5
HOH
HOH
550
A
HOH
551
5
HOH
HOH
551
A
HOH
552
5
HOH
HOH
552
A
HOH
553
5
HOH
HOH
553
A
HOH
554
5
HOH
HOH
554
A
HOH
555
5
HOH
HOH
555
A
HOH
556
5
HOH
HOH
556
A
HOH
557
5
HOH
HOH
557
A
HOH
558
5
HOH
HOH
558
A
HOH
559
5
HOH
HOH
559
A
HOH
560
5
HOH
HOH
560
A
HOH
561
5
HOH
HOH
561
A
HOH
562
5
HOH
HOH
562
A
HOH
563
5
HOH
HOH
563
A
HOH
564
5
HOH
HOH
564
A
HOH
565
5
HOH
HOH
565
A
HOH
566
5
HOH
HOH
566
A
HOH
567
5
HOH
HOH
567
A
HOH
568
5
HOH
HOH
568
A
HOH
569
5
HOH
HOH
569
A
HOH
570
5
HOH
HOH
570
A
HOH
571
5
HOH
HOH
571
A
HOH
572
5
HOH
HOH
572
A
HOH
573
5
HOH
HOH
573
A
HOH
574
5
HOH
HOH
574
A
HOH
575
5
HOH
HOH
575
A
HOH
576
5
HOH
HOH
576
A
HOH
577
5
HOH
HOH
577
A
HOH
578
5
HOH
HOH
578
A
HOH
579
5
HOH
HOH
579
A
HOH
580
5
HOH
HOH
580
A
HOH
581
5
HOH
HOH
581
A
HOH
582
5
HOH
HOH
582
A
n
1
1
A
n
2
2
A
HIS
3
n
3
HIS
3
A
HIS
4
n
4
HIS
4
A
TRP
5
n
5
TRP
5
A
GLY
6
n
6
GLY
6
A
TYR
7
n
7
TYR
7
A
GLY
8
n
8
GLY
8
A
LYS
9
n
9
LYS
9
A
HIS
10
n
10
HIS
10
A
ASN
11
n
11
ASN
11
A
GLY
12
n
12
GLY
12
A
PRO
13
n
13
PRO
13
A
GLU
14
n
14
GLU
14
A
HIS
15
n
15
HIS
15
A
TRP
16
n
16
TRP
16
A
HIS
17
n
17
HIS
17
A
LYS
18
n
18
LYS
18
A
ASP
19
n
19
ASP
19
A
PHE
20
n
20
PHE
20
A
PRO
21
n
21
PRO
21
A
ILE
22
n
22
ILE
22
A
ALA
23
n
23
ALA
23
A
LYS
24
n
24
LYS
24
A
GLY
25
n
25
GLY
25
A
GLU
26
n
26
GLU
26
A
ARG
27
n
27
ARG
27
A
GLN
28
n
28
GLN
28
A
SER
29
n
29
SER
29
A
CPR
30
n
30
PRO
30
A
VAL
31
n
31
VAL
31
A
ASP
32
n
32
ASP
32
A
ILE
33
n
33
ILE
33
A
ASP
34
n
34
ASP
34
A
THR
35
n
35
THR
35
A
HIS
36
n
36
HIS
36
A
THR
37
n
37
THR
37
A
ALA
38
n
38
ALA
38
A
LYS
39
n
39
LYS
39
A
TYR
40
n
40
TYR
40
A
ASP
41
n
41
ASP
41
A
PRO
42
n
42
PRO
42
A
SER
43
n
43
SER
43
A
LEU
44
n
44
LEU
44
A
LYS
45
n
45
LYS
45
A
PRO
46
n
46
PRO
46
A
LEU
47
n
47
LEU
47
A
SER
48
n
48
SER
48
A
VAL
49
n
49
VAL
49
A
SER
50
n
50
SER
50
A
TYR
51
n
51
TYR
51
A
ASP
52
n
52
ASP
52
A
GLN
53
n
53
GLN
53
A
ALA
54
n
54
ALA
54
A
THR
55
n
55
THR
55
A
SER
56
n
56
SER
56
A
LEU
57
n
57
LEU
57
A
ARG
58
n
58
ARG
58
A
ILE
59
n
59
ILE
59
A
LEU
60
n
60
LEU
60
A
ASN
61
n
61
ASN
61
A
ASN
62
n
62
ASN
62
A
GLY
63
n
63
GLY
63
A
ALA
64
n
64
ALA
64
A
ALA
65
n
65
ALA
65
A
PHE
66
n
66
PHE
66
A
ASN
67
n
67
ASN
67
A
VAL
68
n
68
VAL
68
A
GLU
69
n
69
GLU
69
A
PHE
70
n
70
PHE
70
A
ASP
71
n
71
ASP
71
A
ASP
72
n
72
ASP
72
A
SER
73
n
73
SER
73
A
GLN
74
n
74
GLN
74
A
ASP
75
n
75
ASP
75
A
LYS
76
n
76
LYS
76
A
ALA
77
n
77
ALA
77
A
VAL
78
n
78
VAL
78
A
LEU
79
n
79
LEU
79
A
LYS
80
n
80
LYS
80
A
GLY
81
n
81
GLY
81
A
GLY
82
n
82
GLY
82
A
PRO
83
n
83
PRO
83
A
LEU
84
n
84
LEU
84
A
ASP
85
n
85
ASP
85
A
GLY
86
n
86
GLY
86
A
THR
87
n
87
THR
87
A
TYR
88
n
88
TYR
88
A
ARG
89
n
89
ARG
89
A
LEU
90
n
90
LEU
90
A
ILE
91
n
91
ILE
91
A
GLN
92
n
92
GLN
92
A
PHE
93
n
93
PHE
93
A
HIS
94
n
94
HIS
94
A
PHE
95
n
95
PHE
95
A
HIS
96
n
96
HIS
96
A
TRP
97
n
97
TRP
97
A
GLY
98
n
98
GLY
98
A
SER
99
n
99
SER
99
A
LEU
100
n
100
LEU
100
A
ASP
101
n
101
ASP
101
A
GLY
102
n
102
GLY
102
A
GLN
103
n
103
GLN
103
A
GLY
104
n
104
GLY
104
A
SER
105
n
105
SER
105
A
GLU
106
n
106
GLU
106
A
HIS
107
n
107
HIS
107
A
THR
108
n
108
THR
108
A
VAL
109
n
109
VAL
109
A
ASP
110
n
110
ASP
110
A
LYS
111
n
111
LYS
111
A
LYS
112
n
112
LYS
112
A
LYS
113
n
113
LYS
113
A
TYR
114
n
114
TYR
114
A
ALA
115
n
115
ALA
115
A
ALA
116
n
116
ALA
116
A
GLU
117
n
117
GLU
117
A
LEU
118
n
118
LEU
118
A
HIS
119
n
119
HIS
119
A
LEU
120
n
120
LEU
120
A
VAL
121
n
121
VAL
121
A
HIS
122
n
122
HIS
122
A
TRP
123
n
123
TRP
123
A
ASN
124
n
124
ASN
124
A
THR
125
n
125
THR
125
A
LYS
127
n
126
LYS
127
A
TYR
128
n
127
TYR
128
A
GLY
129
n
128
GLY
129
A
ASP
130
n
129
ASP
130
A
PHE
131
n
130
PHE
131
A
GLY
132
n
131
GLY
132
A
LYS
133
n
132
LYS
133
A
ALA
134
n
133
ALA
134
A
VAL
135
n
134
VAL
135
A
GLN
136
n
135
GLN
136
A
GLN
137
n
136
GLN
137
A
PRO
138
n
137
PRO
138
A
ASP
139
n
138
ASP
139
A
GLY
140
n
139
GLY
140
A
LEU
141
n
140
LEU
141
A
ALA
142
n
141
ALA
142
A
VAL
143
n
142
VAL
143
A
LEU
144
n
143
LEU
144
A
GLY
145
n
144
GLY
145
A
ILE
146
n
145
ILE
146
A
PHE
147
n
146
PHE
147
A
LEU
148
n
147
LEU
148
A
LYS
149
n
148
LYS
149
A
VAL
150
n
149
VAL
150
A
GLY
151
n
150
GLY
151
A
SER
152
n
151
SER
152
A
ALA
153
n
152
ALA
153
A
LYS
154
n
153
LYS
154
A
PRO
155
n
154
PRO
155
A
GLY
156
n
155
GLY
156
A
LEU
157
n
156
LEU
157
A
GLN
158
n
157
GLN
158
A
LYS
159
n
158
LYS
159
A
VAL
160
n
159
VAL
160
A
VAL
161
n
160
VAL
161
A
ASP
162
n
161
ASP
162
A
VAL
163
n
162
VAL
163
A
LEU
164
n
163
LEU
164
A
ASP
165
n
164
ASP
165
A
SER
166
n
165
SER
166
A
ILE
167
n
166
ILE
167
A
LYS
168
n
167
LYS
168
A
THR
169
n
168
THR
169
A
LYS
170
n
169
LYS
170
A
GLY
171
n
170
GLY
171
A
LYS
172
n
171
LYS
172
A
SER
173
n
172
SER
173
A
ALA
174
n
173
ALA
174
A
ASP
175
n
174
ASP
175
A
PHE
176
n
175
PHE
176
A
THR
177
n
176
THR
177
A
ASN
178
n
177
ASN
178
A
PHE
179
n
178
PHE
179
A
ASP
180
n
179
ASP
180
A
PRO
181
n
180
PRO
181
A
ARG
182
n
181
ARG
182
A
GLY
183
n
182
GLY
183
A
LEU
184
n
183
LEU
184
A
LEU
185
n
184
LEU
185
A
PRO
186
n
185
PRO
186
A
GLU
187
n
186
GLU
187
A
SER
188
n
187
SER
188
A
LEU
189
n
188
LEU
189
A
ASP
190
n
189
ASP
190
A
TYR
191
n
190
TYR
191
A
TRP
192
n
191
TRP
192
A
THR
193
n
192
THR
193
A
TYR
194
n
193
TYR
194
A
PRO
195
n
194
PRO
195
A
GLY
196
n
195
GLY
196
A
SER
197
n
196
SER
197
A
LEU
198
n
197
LEU
198
A
THR
199
n
198
THR
199
A
THR
200
n
199
THR
200
A
PRO
201
n
200
PRO
201
A
CPR
202
n
201
PRO
202
A
LEU
203
n
202
LEU
203
A
LEU
204
n
203
LEU
204
A
GLU
205
n
204
GLU
205
A
CYS
206
n
205
CYS
206
A
VAL
207
n
206
VAL
207
A
THR
208
n
207
THR
208
A
TRP
209
n
208
TRP
209
A
ILE
210
n
209
ILE
210
A
VAL
211
n
210
VAL
211
A
LEU
212
n
211
LEU
212
A
LYS
213
n
212
LYS
213
A
GLU
214
n
213
GLU
214
A
PRO
215
n
214
PRO
215
A
ILE
216
n
215
ILE
216
A
SER
217
n
216
SER
217
A
VAL
218
n
217
VAL
218
A
SER
219
n
218
SER
219
A
SER
220
n
219
SER
220
A
GLU
221
n
220
GLU
221
A
GLN
222
n
221
GLN
222
A
VAL
223
n
222
VAL
223
A
LEU
224
n
223
LEU
224
A
LYS
225
n
224
LYS
225
A
PHE
226
n
225
PHE
226
A
ARG
227
n
226
ARG
227
A
LYS
228
n
227
LYS
228
A
LEU
229
n
228
LEU
229
A
ASN
230
n
229
ASN
230
A
PHE
231
n
230
PHE
231
A
ASN
232
n
231
ASN
232
A
GLY
233
n
232
GLY
233
A
GLU
234
n
233
GLU
234
A
GLY
235
n
234
GLY
235
A
GLU
236
n
235
GLU
236
A
PRO
237
n
236
PRO
237
A
GLU
238
n
237
GLU
238
A
GLU
239
n
238
GLU
239
A
LEU
240
n
239
LEU
240
A
MET
241
n
240
MET
241
A
VAL
242
n
241
VAL
242
A
ASP
243
n
242
ASP
243
A
ASN
244
n
243
ASN
244
A
TRP
245
n
244
TRP
245
A
ARG
246
n
245
ARG
246
A
PRO
247
n
246
PRO
247
A
ALA
248
n
247
ALA
248
A
GLN
249
n
248
GLN
249
A
PRO
250
n
249
PRO
250
A
LEU
251
n
250
LEU
251
A
LYS
252
n
251
LYS
252
A
ASN
253
n
252
ASN
253
A
ARG
254
n
253
ARG
254
A
GLN
255
n
254
GLN
255
A
ILE
256
n
255
ILE
256
A
LYS
257
n
256
LYS
257
A
ALA
258
n
257
ALA
258
A
SER
259
n
258
SER
259
A
PHE
260
n
259
PHE
260
A
LYS
261
n
260
LYS
261
A
author_defined_assembly
1
monomeric
A
HIS
94
A
NE2
HIS
94
1_555
A
ZN
262
B
ZN
ZN
1_555
A
HIS
96
A
NE2
HIS
96
1_555
103.8
A
HIS
94
A
NE2
HIS
94
1_555
A
ZN
262
B
ZN
ZN
1_555
A
HIS
119
A
ND1
HIS
119
1_555
113.8
A
HIS
96
A
NE2
HIS
96
1_555
A
ZN
262
B
ZN
ZN
1_555
A
HIS
119
A
ND1
HIS
119
1_555
100.6
A
HIS
94
A
NE2
HIS
94
1_555
A
ZN
262
B
ZN
ZN
1_555
A
HOH
574
E
O
HOH
1_555
106.8
A
HIS
96
A
NE2
HIS
96
1_555
A
ZN
262
B
ZN
ZN
1_555
A
HOH
574
E
O
HOH
1_555
115.8
A
HIS
119
A
ND1
HIS
119
1_555
A
ZN
262
B
ZN
ZN
1_555
A
HOH
574
E
O
HOH
1_555
115.7
A
VAL
135
A
O
VAL
134
1_555
A
HG
263
C
HG
HG
1_555
A
GLN
137
A
O
GLN
136
1_555
102.4
A
VAL
135
A
O
VAL
134
1_555
A
HG
263
C
HG
HG
1_555
A
GLU
205
A
O
GLU
204
1_555
152.3
A
GLN
137
A
O
GLN
136
1_555
A
HG
263
C
HG
HG
1_555
A
GLU
205
A
O
GLU
204
1_555
91.7
A
VAL
135
A
O
VAL
134
1_555
A
HG
263
C
HG
HG
1_555
A
CYS
206
A
SG
CYS
205
1_555
67.2
A
GLN
137
A
O
GLN
136
1_555
A
HG
263
C
HG
HG
1_555
A
CYS
206
A
SG
CYS
205
1_555
93.5
A
GLU
205
A
O
GLU
204
1_555
A
HG
263
C
HG
HG
1_555
A
CYS
206
A
SG
CYS
205
1_555
88.5
A
VAL
135
A
O
VAL
134
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
271
E
O
HOH
1_555
112.9
A
GLN
137
A
O
GLN
136
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
271
E
O
HOH
1_555
86.0
A
GLU
205
A
O
GLU
204
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
271
E
O
HOH
1_555
91.6
A
CYS
206
A
SG
CYS
205
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
271
E
O
HOH
1_555
179.5
A
VAL
135
A
O
VAL
134
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
374
E
O
HOH
1_555
48.2
A
GLN
137
A
O
GLN
136
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
374
E
O
HOH
1_555
137.9
A
GLU
205
A
O
GLU
204
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
374
E
O
HOH
1_555
128.6
A
CYS
206
A
SG
CYS
205
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
374
E
O
HOH
1_555
98.5
A
HOH
271
E
O
HOH
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
374
E
O
HOH
1_555
81.9
A
VAL
135
A
O
VAL
134
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
375
E
O
HOH
1_555
93.5
A
GLN
137
A
O
GLN
136
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
375
E
O
HOH
1_555
164.0
A
GLU
205
A
O
GLU
204
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
375
E
O
HOH
1_555
74.6
A
CYS
206
A
SG
CYS
205
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
375
E
O
HOH
1_555
94.4
A
HOH
271
E
O
HOH
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
375
E
O
HOH
1_555
86.0
A
HOH
374
E
O
HOH
1_555
A
HG
263
C
HG
HG
1_555
A
HOH
375
E
O
HOH
1_555
54.2
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
LYS
39
A
O
LYS
39
A
N
ALA
258
A
N
ALA
257
A
O
LYS
257
A
O
LYS
256
A
N
THR
193
A
N
THR
192
A
O
TRP
192
A
O
TRP
191
A
N
VAL
211
A
N
VAL
210
A
N
ILE
210
A
N
ILE
209
A
O
VAL
143
A
O
VAL
142
A
O
LEU
144
A
O
LEU
143
A
N
LEU
120
A
N
LEU
120
A
N
HIS
119
A
N
HIS
119
A
O
HIS
94
A
O
HIS
94
A
O
PHE
93
A
O
PHE
93
A
N
VAL
68
A
N
VAL
68
A
N
GLU
69
A
N
GLU
69
A
O
ARG
58
A
O
ARG
58
A
N
ILE
59
A
N
ILE
59
A
O
SER
173
A
O
SER
172
1
A
MET
1
A
MET
1
1
Y
1
A
SER
2
A
SER
2
1
Y
1
A
ARG
27
-143.40
57.07
1
A
ALA
65
-170.94
-170.71
1
A
LYS
76
-112.67
-89.32
1
A
LYS
111
74.00
-2.43
1
A
ASN
244
-94.33
46.73
1
A
LYS
252
53.32
-139.53
PROTEIN_REP.PARAM
PROTEIN.TOP
ION.PARAM
WATER.TOP
WATER_REP.PARAM
ION.TOP
4MI.PARAM
4MI.TOP
11.2
0.07
0.00
0.18
0.33
0.00
-0.39
0.2000000
0.005
0.1790000
0.1800000
0.1790000
1.60
25.00
1379
468251
28406
4.9
88.8
RANDOM
918664.21
0.00
1
RESTRAINED
THROUGHOUT
1.0
1.0
Brunger & Adams
FLAT MODEL
47.68
0.389
0.18
0.16
5.00
0.08
0.04
1.60
25.00
318
2380
8
0
2054
0.005
1.4
24.5
0.78
0.2070000
0.016
0.1880000
1.70
159
3455
6
4.4
68.5
9.9
1.60
25.00
1G0E
468251
28456
1.0
1.0
0.0470000
1
15.2
16.46
88.8
0.0470000
1.60
25.00
28456
16.46
88.8
refinement
CNS
data scaling
SCALEPACK
phasing
CNS
SITE-SPECIFIC MUTANT (HIS64 REPLACED WITH ALA) OF HUMAN CARBONIC ANHYDRASE II COMPLEXED WITH 4-METHYLIMIDAZOLE
1
N
N
2
N
N
3
N
N
4
N
N
5
N
N
THE BIOLOGICAL ASSEMBLY IS A MONOMER CONSTRUCTED FROM CHAIN A
A
PRO
13
A
PRO
13
HELX_P
A
LYS
18
A
LYS
18
5
A
6
A
PRO
21
A
PRO
21
HELX_P
A
LYS
24
A
LYS
24
5
B
4
A
THR
125
A
THR
125
HELX_P
A
TYR
128
A
TYR
127
5
C
3
A
PHE
131
A
PHE
130
HELX_P
A
ALA
134
A
ALA
133
1
D
4
A
PRO
155
A
PRO
154
HELX_P
A
LEU
157
A
LEU
156
5
E1
3
A
GLN
158
A
GLN
157
HELX_P
A
VAL
163
A
VAL
162
1
E2
6
A
LEU
164
A
LEU
163
HELX_P
A
ILE
167
A
ILE
166
5
E3
4
A
PRO
181
A
PRO
180
HELX_P
A
LEU
184
A
LEU
183
5
F
4
A
SER
220
A
SER
219
HELX_P
A
PHE
226
A
PHE
225
1
G
7
metalc
2.133
A
HIS
94
A
NE2
HIS
94
1_555
A
ZN
262
B
ZN
ZN
1_555
metalc
2.031
A
HIS
96
A
NE2
HIS
96
1_555
A
ZN
262
B
ZN
ZN
1_555
metalc
2.087
A
HIS
119
A
ND1
HIS
119
1_555
A
ZN
262
B
ZN
ZN
1_555
metalc
3.314
A
VAL
135
A
O
VAL
134
1_555
A
HG
263
C
HG
HG
1_555
metalc
2.853
A
GLN
137
A
O
GLN
136
1_555
A
HG
263
C
HG
HG
1_555
metalc
3.187
A
GLU
205
A
O
GLU
204
1_555
A
HG
263
C
HG
HG
1_555
metalc
2.281
A
CYS
206
A
SG
CYS
205
1_555
A
HG
263
C
HG
HG
1_555
metalc
1.807
A
ZN
262
B
ZN
ZN
1_555
A
HOH
574
E
O
HOH
1_555
metalc
2.435
A
HG
263
C
HG
HG
1_555
A
HOH
271
E
O
HOH
1_555
metalc
3.522
A
HG
263
C
HG
HG
1_555
A
HOH
374
E
O
HOH
1_555
metalc
3.454
A
HG
263
C
HG
HG
1_555
A
HOH
375
E
O
HOH
1_555
LYASE
TWISTED BETA SHEET, CHEMICAL RESCUE, 4-METHYLIMIDAZOLE, ZINC METALLOENZYME, PROTEIN LIGAND COMPLEX, LYASE
A
SER
29
A
SER
29
1
A
PRO
30
A
PRO
30
-0.12
A
PRO
201
A
PRO
200
1
A
PRO
202
A
PRO
201
0.54
CAH2_HUMAN
UNP
1
0
P00918
MSHHWGYGKHNGPEHWHKDFPIAKGERQSPVDIDTHTAKYDPSLKPLSVSYDQATSLRILNNGHAFNVEFDDSQDKAVLK
GGPLDGTYRLIQFHFHWGSLDGQGSEHTVDKKKYAAELHLVHWNTKYGDFGKAVQQPDGLAVLGIFLKVGSAKPGLQKVV
DVLDSIKTKGKSADFTNFDPRGLLPESLDYWTYPGSLTTPPLLECVTWIVLKEPISVSSEQVLKFRKLNFNGEGEPEELM
VDNWRPAQPLKNRQIKASFK
1
260
1G0E
1
261
P00918
A
1
1
260
1
HIS
engineered mutation
ALA
64
1G0E
A
P00918
UNP
63
64
10
parallel
anti-parallel
anti-parallel
parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
A
LYS
39
A
LYS
39
A
TYR
40
A
TYR
40
A
LYS
257
A
LYS
256
A
ALA
258
A
ALA
257
A
TYR
191
A
TYR
190
A
GLY
196
A
GLY
195
A
VAL
207
A
VAL
206
A
LEU
212
A
LEU
211
A
LEU
141
A
LEU
140
A
GLY
151
A
GLY
150
A
ALA
116
A
ALA
116
A
ASN
124
A
ASN
124
A
TYR
88
A
TYR
88
A
TRP
97
A
TRP
97
A
PHE
66
A
PHE
66
A
PHE
70
A
PHE
70
A
SER
56
A
SER
56
A
ASN
61
A
ASN
61
A
SER
173
A
SER
172
A
ASP
175
A
ASP
174
CATALYTIC SITE
Author
3
NONE
Author
1
BINDING SITE FOR RESIDUE ZN A 262
A
ZN
262
Software
5
BINDING SITE FOR RESIDUE HG A 263
A
HG
263
Software
5
BINDING SITE FOR RESIDUE 4MZ A 264
A
4MZ
264
Software
4
A
HIS
94
A
HIS
94
3
1_555
A
HIS
96
A
HIS
96
3
1_555
A
HIS
119
A
HIS
119
3
1_555
A
CYS
206
A
CYS
205
1
1_555
A
HIS
94
A
HIS
94
5
1_555
A
HIS
96
A
HIS
96
5
1_555
A
HIS
119
A
HIS
119
5
1_555
A
THR
199
A
THR
198
5
1_555
A
HOH
574
E
HOH
5
1_555
A
VAL
135
A
VAL
134
5
1_555
A
GLN
137
A
GLN
136
5
1_555
A
GLU
205
A
GLU
204
5
1_555
A
CYS
206
A
CYS
205
5
1_555
A
HOH
271
E
HOH
5
1_555
A
TRP
5
A
TRP
5
4
1_555
A
ASN
62
A
ASN
62
4
1_555
A
GLY
63
A
GLY
63
4
1_555
A
LYS
170
A
LYS
169
4
1_555
4
P 1 21 1