0.014591
0.000000
0.000000
0.000000
0.014591
0.000000
0.000000
0.000000
0.011645
0.00000
0.00000
0.00000
Cronk, J.D.
Endrizzi, J.A.
Cronk, M.R.
O'Neill, J.W.
Zhang, K.Y.J.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
8
90.00
90.00
90.00
68.535
68.535
85.877
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
Zn 2
65.409
ZINC ION
non-polymer
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
391
N
ZN
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
Protein Sci.
PRCIEI
0795
0961-8368
10
911
922
10.1110/ps.46301
11316870
Crystal structure of E. coli beta-carbonic anhydrase, an enzyme with an unusual pH-dependent activity.
2001
DK
Acta Crystallogr.,Sect.D
ABCRE6
0766
0907-4449
52
1176
1179
10.1107/S0907444900008519
Cloning, crystallization and preliminary characterization of a beta carbonic anhydrase from Escherichia coli
2000
10.2210/pdb1i6p/pdb
pdb_00001i6p
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
291
1
mirrors
IMAGE PLATE
1999-04-08
RIGAKU RAXIS IV
mirrors
SINGLE WAVELENGTH
M
x-ray
1
1.5418
1.0
1.5418
ROTATING ANODE
RIGAKU RU200
25130.779
CARBONIC ANHYDRASE
4.2.1.1
1
man
polymer
65.409
ZINC ION
1
syn
non-polymer
18.015
water
62
nat
water
no
no
MKDIDTLISNNALWSKMLVEEDPGFFEKLAQAQKPRFLWIGCSDSRVPAERLTGLEPGELFVHRNVANLVIHTDLNCLSV
VQYAVDVLEVEHIIICGHYGCGGVQAAVENPELGLINNWLLHIRDIWFKHSSLLGEMPQERRLDTLCELNVMEQVYNLGH
STIMQSAWKRGQKVTIHGWAYGIHDGLLRDLDVTATNRETLEQRYRHGISNLKLKHANHK
MKDIDTLISNNALWSKMLVEEDPGFFEKLAQAQKPRFLWIGCSDSRVPAERLTGLEPGELFVHRNVANLVIHTDLNCLSV
VQYAVDVLEVEHIIICGHYGCGGVQAAVENPELGLINNWLLHIRDIWFKHSSLLGEMPQERRLDTLCELNVMEQVYNLGH
STIMQSAWKRGQKVTIHGWAYGIHDGLLRDLDVTATNRETLEQRYRHGISNLKLKHANHK
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
Escherichia
Escherichia
Escherichia coli
sample
YADF
562
Escherichia coli
511693
Escherichia coli BL21
BL21
PLASMID
PET3A
1
2.009
36.4
VAPOR DIFFUSION, HANGING DROP
6.3
ammonium sulfate, MES pH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 293K
293
chem_comp_atom
chem_comp_bond
database_2
pdbx_initial_refinement_model
pdbx_struct_conn_angle
struct_conn
struct_site
repository
Initial release
Version format compliance
Derived calculations
Version format compliance
Data collection
Database references
Derived calculations
Refinement description
1
0
2001-05-09
1
1
2008-04-27
1
2
2011-07-13
1
3
2023-08-09
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_pdbx_struct_conn_angle.ptnr1_auth_seq_id
_pdbx_struct_conn_angle.ptnr1_label_seq_id
_pdbx_struct_conn_angle.ptnr3_auth_seq_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_site.pdbx_auth_asym_id
_struct_site.pdbx_auth_comp_id
_struct_site.pdbx_auth_seq_id
CRYSTAL STRUCTURE OF E. COLI BETA CARBONIC ANHYDRASE (ECCA) IN A DIFFERENT SPACE GROUP, P4322, SOLVED TO 2.2A RESOLUTION
DENSITY FOR THE FOLLOWING ATOMS WITHIN THE MAIN CHAIN
IS RELATIVELY WEAK AND LIKELY REFLECTS INCREASED LOCAL
CONFORMATIONAL FLEXIBILITY OF THE MAIN CHAIN IN THIS
REGION.
GLN A 31 CA
ALA A 32 N
ALA A 32 CA
DENSITY FOR THE SIDE CHAINS OF THE LISTED RESIDUES IS
RELATIVELY POORLY DEFINED. THE MODEL REPRESENTS THE
MOST PROBABLE CONFORMATIONS FOR THESE RESIDUES BASED
ON THE OBSERVED DENSITY.
GLU A 20
GLU A 21
LYS A 28
LEU A 29
GLN A 31
ALA A 32
GLN A 33
LYS A 34
GLU A 112
GLU A 140
ARG A 141
LYS A 169
LYS A 173
ARG A 189
ARG A 198
GLU A 199
LYS A 213
LEU A 214
LYS A 215
RCSB
Y
RCSB
2001-03-02
REL
ZN
ZINC ION
HOH
water
1I6O
PDB ENTRY 1I6O
PDB
experimental model
ZN2
221
2
ZN
ZN
301
A
WAT
1
3
HOH
HOH
302
A
WAT
2
3
HOH
HOH
303
A
WAT
3
3
HOH
HOH
304
A
WAT
4
3
HOH
HOH
305
A
WAT
5
3
HOH
HOH
306
A
WAT
6
3
HOH
HOH
307
A
WAT
7
3
HOH
HOH
308
A
WAT
8
3
HOH
HOH
309
A
WAT
9
3
HOH
HOH
310
A
WAT
10
3
HOH
HOH
311
A
WAT
11
3
HOH
HOH
312
A
WAT
12
3
HOH
HOH
313
A
WAT
13
3
HOH
HOH
314
A
WAT
14
3
HOH
HOH
315
A
WAT
15
3
HOH
HOH
316
A
WAT
16
3
HOH
HOH
317
A
WAT
17
3
HOH
HOH
318
A
WAT
18
3
HOH
HOH
319
A
WAT
19
3
HOH
HOH
320
A
WAT
20
3
HOH
HOH
321
A
WAT
21
3
HOH
HOH
322
A
WAT
22
3
HOH
HOH
323
A
WAT
23
3
HOH
HOH
324
A
WAT
24
3
HOH
HOH
325
A
WAT
25
3
HOH
HOH
326
A
WAT
26
3
HOH
HOH
327
A
WAT
27
3
HOH
HOH
328
A
WAT
28
3
HOH
HOH
329
A
WAT
29
3
HOH
HOH
330
A
WAT
30
3
HOH
HOH
331
A
WAT
31
3
HOH
HOH
332
A
WAT
32
3
HOH
HOH
333
A
WAT
33
3
HOH
HOH
334
A
WAT
34
3
HOH
HOH
335
A
WAT
35
3
HOH
HOH
336
A
WAT
36
3
HOH
HOH
337
A
WAT
37
3
HOH
HOH
338
A
WAT
38
3
HOH
HOH
339
A
WAT
39
3
HOH
HOH
340
A
WAT
40
3
HOH
HOH
341
A
WAT
41
3
HOH
HOH
342
A
WAT
42
3
HOH
HOH
343
A
WAT
43
3
HOH
HOH
344
A
WAT
44
3
HOH
HOH
345
A
WAT
45
3
HOH
HOH
346
A
WAT
46
3
HOH
HOH
347
A
WAT
47
3
HOH
HOH
348
A
WAT
48
3
HOH
HOH
349
A
WAT
49
3
HOH
HOH
350
A
WAT
50
3
HOH
HOH
351
A
WAT
51
3
HOH
HOH
352
A
WAT
52
3
HOH
HOH
353
A
WAT
53
3
HOH
HOH
354
A
WAT
54
3
HOH
HOH
355
A
WAT
55
3
HOH
HOH
356
A
WAT
56
3
HOH
HOH
357
A
WAT
57
3
HOH
HOH
358
A
WAT
58
3
HOH
HOH
359
A
WAT
59
3
HOH
HOH
360
A
WAT
60
3
HOH
HOH
361
A
WAT
61
3
HOH
HOH
362
A
WAT
62
3
HOH
HOH
363
A
n
1
1
A
LYS
2
n
2
LYS
2
A
ASP
3
n
3
ASP
3
A
ILE
4
n
4
ILE
4
A
ASP
5
n
5
ASP
5
A
THR
6
n
6
THR
6
A
LEU
7
n
7
LEU
7
A
ILE
8
n
8
ILE
8
A
SER
9
n
9
SER
9
A
ASN
10
n
10
ASN
10
A
ASN
11
n
11
ASN
11
A
ALA
12
n
12
ALA
12
A
LEU
13
n
13
LEU
13
A
TRP
14
n
14
TRP
14
A
SER
15
n
15
SER
15
A
LYS
16
n
16
LYS
16
A
MET
17
n
17
MET
17
A
LEU
18
n
18
LEU
18
A
VAL
19
n
19
VAL
19
A
GLU
20
n
20
GLU
20
A
GLU
21
n
21
GLU
21
A
ASP
22
n
22
ASP
22
A
PRO
23
n
23
PRO
23
A
GLY
24
n
24
GLY
24
A
PHE
25
n
25
PHE
25
A
PHE
26
n
26
PHE
26
A
GLU
27
n
27
GLU
27
A
LYS
28
n
28
LYS
28
A
LEU
29
n
29
LEU
29
A
ALA
30
n
30
ALA
30
A
GLN
31
n
31
GLN
31
A
ALA
32
n
32
ALA
32
A
GLN
33
n
33
GLN
33
A
LYS
34
n
34
LYS
34
A
PRO
35
n
35
PRO
35
A
ARG
36
n
36
ARG
36
A
PHE
37
n
37
PHE
37
A
LEU
38
n
38
LEU
38
A
TRP
39
n
39
TRP
39
A
ILE
40
n
40
ILE
40
A
GLY
41
n
41
GLY
41
A
CYS
42
n
42
CYS
42
A
SER
43
n
43
SER
43
A
ASP
44
n
44
ASP
44
A
SER
45
n
45
SER
45
A
ARG
46
n
46
ARG
46
A
VAL
47
n
47
VAL
47
A
PRO
48
n
48
PRO
48
A
ALA
49
n
49
ALA
49
A
GLU
50
n
50
GLU
50
A
ARG
51
n
51
ARG
51
A
LEU
52
n
52
LEU
52
A
THR
53
n
53
THR
53
A
GLY
54
n
54
GLY
54
A
LEU
55
n
55
LEU
55
A
GLU
56
n
56
GLU
56
A
PRO
57
n
57
PRO
57
A
GLY
58
n
58
GLY
58
A
GLU
59
n
59
GLU
59
A
LEU
60
n
60
LEU
60
A
PHE
61
n
61
PHE
61
A
VAL
62
n
62
VAL
62
A
HIS
63
n
63
HIS
63
A
ARG
64
n
64
ARG
64
A
ASN
65
n
65
ASN
65
A
VAL
66
n
66
VAL
66
A
ALA
67
n
67
ALA
67
A
ASN
68
n
68
ASN
68
A
LEU
69
n
69
LEU
69
A
VAL
70
n
70
VAL
70
A
ILE
71
n
71
ILE
71
A
HIS
72
n
72
HIS
72
A
THR
73
n
73
THR
73
A
ASP
74
n
74
ASP
74
A
LEU
75
n
75
LEU
75
A
ASN
76
n
76
ASN
76
A
CYS
77
n
77
CYS
77
A
LEU
78
n
78
LEU
78
A
SER
79
n
79
SER
79
A
VAL
80
n
80
VAL
80
A
VAL
81
n
81
VAL
81
A
GLN
82
n
82
GLN
82
A
TYR
83
n
83
TYR
83
A
ALA
84
n
84
ALA
84
A
VAL
85
n
85
VAL
85
A
ASP
86
n
86
ASP
86
A
VAL
87
n
87
VAL
87
A
LEU
88
n
88
LEU
88
A
GLU
89
n
89
GLU
89
A
VAL
90
n
90
VAL
90
A
GLU
91
n
91
GLU
91
A
HIS
92
n
92
HIS
92
A
ILE
93
n
93
ILE
93
A
ILE
94
n
94
ILE
94
A
ILE
95
n
95
ILE
95
A
CYS
96
n
96
CYS
96
A
GLY
97
n
97
GLY
97
A
HIS
98
n
98
HIS
98
A
TYR
99
n
99
TYR
99
A
GLY
100
n
100
GLY
100
A
CYS
101
n
101
CYS
101
A
GLY
102
n
102
GLY
102
A
GLY
103
n
103
GLY
103
A
VAL
104
n
104
VAL
104
A
GLN
105
n
105
GLN
105
A
ALA
106
n
106
ALA
106
A
ALA
107
n
107
ALA
107
A
VAL
108
n
108
VAL
108
A
GLU
109
n
109
GLU
109
A
ASN
110
n
110
ASN
110
A
PRO
111
n
111
PRO
111
A
GLU
112
n
112
GLU
112
A
LEU
113
n
113
LEU
113
A
GLY
114
n
114
GLY
114
A
LEU
115
n
115
LEU
115
A
ILE
116
n
116
ILE
116
A
ASN
117
n
117
ASN
117
A
ASN
118
n
118
ASN
118
A
TRP
119
n
119
TRP
119
A
LEU
120
n
120
LEU
120
A
LEU
121
n
121
LEU
121
A
HIS
122
n
122
HIS
122
A
ILE
123
n
123
ILE
123
A
ARG
124
n
124
ARG
124
A
ASP
125
n
125
ASP
125
A
ILE
126
n
126
ILE
126
A
TRP
127
n
127
TRP
127
A
PHE
128
n
128
PHE
128
A
LYS
129
n
129
LYS
129
A
HIS
130
n
130
HIS
130
A
SER
131
n
131
SER
131
A
SER
132
n
132
SER
132
A
LEU
133
n
133
LEU
133
A
LEU
134
n
134
LEU
134
A
GLY
135
n
135
GLY
135
A
GLU
136
n
136
GLU
136
A
MET
137
n
137
MET
137
A
PRO
138
n
138
PRO
138
A
GLN
139
n
139
GLN
139
A
GLU
140
n
140
GLU
140
A
ARG
141
n
141
ARG
141
A
ARG
142
n
142
ARG
142
A
LEU
143
n
143
LEU
143
A
ASP
144
n
144
ASP
144
A
THR
145
n
145
THR
145
A
LEU
146
n
146
LEU
146
A
CYS
147
n
147
CYS
147
A
GLU
148
n
148
GLU
148
A
LEU
149
n
149
LEU
149
A
ASN
150
n
150
ASN
150
A
VAL
151
n
151
VAL
151
A
MET
152
n
152
MET
152
A
GLU
153
n
153
GLU
153
A
GLN
154
n
154
GLN
154
A
VAL
155
n
155
VAL
155
A
TYR
156
n
156
TYR
156
A
ASN
157
n
157
ASN
157
A
LEU
158
n
158
LEU
158
A
GLY
159
n
159
GLY
159
A
HIS
160
n
160
HIS
160
A
SER
161
n
161
SER
161
A
THR
162
n
162
THR
162
A
ILE
163
n
163
ILE
163
A
MET
164
n
164
MET
164
A
GLN
165
n
165
GLN
165
A
SER
166
n
166
SER
166
A
ALA
167
n
167
ALA
167
A
TRP
168
n
168
TRP
168
A
LYS
169
n
169
LYS
169
A
ARG
170
n
170
ARG
170
A
GLY
171
n
171
GLY
171
A
GLN
172
n
172
GLN
172
A
LYS
173
n
173
LYS
173
A
VAL
174
n
174
VAL
174
A
THR
175
n
175
THR
175
A
ILE
176
n
176
ILE
176
A
HIS
177
n
177
HIS
177
A
GLY
178
n
178
GLY
178
A
TRP
179
n
179
TRP
179
A
ALA
180
n
180
ALA
180
A
TYR
181
n
181
TYR
181
A
GLY
182
n
182
GLY
182
A
ILE
183
n
183
ILE
183
A
HIS
184
n
184
HIS
184
A
ASP
185
n
185
ASP
185
A
GLY
186
n
186
GLY
186
A
LEU
187
n
187
LEU
187
A
LEU
188
n
188
LEU
188
A
ARG
189
n
189
ARG
189
A
ASP
190
n
190
ASP
190
A
LEU
191
n
191
LEU
191
A
ASP
192
n
192
ASP
192
A
VAL
193
n
193
VAL
193
A
THR
194
n
194
THR
194
A
ALA
195
n
195
ALA
195
A
THR
196
n
196
THR
196
A
ASN
197
n
197
ASN
197
A
ARG
198
n
198
ARG
198
A
GLU
199
n
199
GLU
199
A
THR
200
n
200
THR
200
A
LEU
201
n
201
LEU
201
A
GLU
202
n
202
GLU
202
A
GLN
203
n
203
GLN
203
A
ARG
204
n
204
ARG
204
A
TYR
205
n
205
TYR
205
A
ARG
206
n
206
ARG
206
A
HIS
207
n
207
HIS
207
A
GLY
208
n
208
GLY
208
A
ILE
209
n
209
ILE
209
A
SER
210
n
210
SER
210
A
ASN
211
n
211
ASN
211
A
LEU
212
n
212
LEU
212
A
LYS
213
n
213
LYS
213
A
LEU
214
n
214
LEU
214
A
LYS
215
n
215
LYS
215
A
n
216
216
A
n
217
217
A
n
218
218
A
n
219
219
A
n
220
220
A
author_and_software_defined_assembly
PISA,PQS
4
tetrameric
15570
-83
33060
A
CYS
42
A
SG
CYS
42
1_555
A
ZN
301
B
ZN
ZN
1_555
A
ASP
44
A
OD2
ASP
44
1_555
99.8
A
CYS
42
A
SG
CYS
42
1_555
A
ZN
301
B
ZN
ZN
1_555
A
HIS
98
A
NE2
HIS
98
1_555
121.9
A
ASP
44
A
OD2
ASP
44
1_555
A
ZN
301
B
ZN
ZN
1_555
A
HIS
98
A
NE2
HIS
98
1_555
100.3
A
CYS
42
A
SG
CYS
42
1_555
A
ZN
301
B
ZN
ZN
1_555
A
CYS
101
A
SG
CYS
101
1_555
113.3
A
ASP
44
A
OD2
ASP
44
1_555
A
ZN
301
B
ZN
ZN
1_555
A
CYS
101
A
SG
CYS
101
1_555
112.2
A
HIS
98
A
NE2
HIS
98
1_555
A
ZN
301
B
ZN
ZN
1_555
A
CYS
101
A
SG
CYS
101
1_555
108.1
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
-1.0000000000
0.0000000000
0.0000000000
0.0000000000
-1.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
2_575
-x,-y+2,z
crystal symmetry operation
0.0000000000
137.0700000000
0.0000000000
0.0000000000
1.0000000000
0.0000000000
1.0000000000
0.0000000000
0.0000000000
0.0000000000
0.0000000000
-1.0000000000
7_466
y-1,x+1,-z+1
crystal symmetry operation
-68.5350000000
68.5350000000
85.8770000000
0.0000000000
-1.0000000000
0.0000000000
-1.0000000000
0.0000000000
0.0000000000
0.0000000000
0.0000000000
-1.0000000000
8_666
-y+1,-x+1,-z+1
crystal symmetry operation
68.5350000000
68.5350000000
85.8770000000
A
N
PHE
61
A
N
PHE
61
A
O
PHE
37
A
O
PHE
37
A
N
LEU
38
A
N
LEU
38
A
O
HIS
92
A
O
HIS
92
A
N
ILE
93
A
N
ILE
93
A
O
THR
175
A
O
THR
175
A
O
ALA
180
A
O
ALA
180
A
N
ARG
189
A
N
ARG
189
1
A
MET
1
A
MET
1
1
Y
1
A
HIS
216
A
HIS
216
1
Y
1
A
ALA
217
A
ALA
217
1
Y
1
A
ASN
218
A
ASN
218
1
Y
1
A
HIS
219
A
HIS
219
1
Y
1
A
LYS
220
A
LYS
220
1
Y
1
A
GLU
21
-151.41
-31.31
1
A
ASP
22
-168.13
67.28
1
A
ALA
32
-52.75
87.51
1
A
SER
45
39.78
53.28
1
A
ASP
185
-150.25
-2.91
PROTEIN_REP.PARAM
PROTEIN.TOP
WATER_REP.PARAM
ION.PARAM
28.8
-0.34
0.00
0.00
-0.34
0.00
0.69
0.2020000
0.005
0.1760000
0.1760000
2.00
42.21
1379
13958
13653
10.1
94.7
RANDOM
334555.69
0.00
1
RESTRAINED
THROUGHOUT
0.0
0.0
MOLECULAR REPLACEMENT
PDB ENTRY 1I6O
Engh & Huber
FLAT MODEL
44.43
0.338
0.24
0.19
5.00
0.15
0.11
2.00
42.21
62
1778
1
0
1715
0.004
1.1
20.4
0.62
0.2150000
0.014
0.1910000
2.13
223
1955
6
10.2
92.6
15.6
2.00
40
1I6P
90500
13974
0
0
0.0650000
1
20.4
6.5
96.7
0.3090000
2.00
2.03
4.4
1
3.5
96.9
phasing
EPMR
refinement
CNS
1.0
data reduction
DENZO
data scaling
SCALEPACK
CRYSTAL STRUCTURE OF E. COLI BETA CARBONIC ANHYDRASE (ECCA)
1
N
N
2
N
N
3
N
N
A tetramer constructed from the operations -y, -x, -z; y, x, -z; -1-x, 1-y, z is thought to exist in solution under physiological conditions.
A
ASP
3
A
ASP
3
HELX_P
A
GLU
20
A
GLU
20
1
1
18
A
PHE
26
A
PHE
26
HELX_P
A
GLN
31
A
GLN
31
1
2
6
A
PRO
48
A
PRO
48
HELX_P
A
GLY
54
A
GLY
54
1
3
7
A
ASP
74
A
ASP
74
HELX_P
A
VAL
87
A
VAL
87
1
4
14
A
CYS
101
A
CYS
101
HELX_P
A
ASN
110
A
ASN
110
1
5
10
A
LEU
115
A
LEU
115
HELX_P
A
HIS
130
A
HIS
130
1
6
16
A
HIS
130
A
HIS
130
HELX_P
A
GLY
135
A
GLY
135
1
7
6
A
GLU
136
A
GLU
136
HELX_P
A
MET
137
A
MET
137
5
8
2
A
PRO
138
A
PRO
138
HELX_P
A
GLU
140
A
GLU
140
5
9
3
A
ARG
141
A
ARG
141
HELX_P
A
SER
161
A
SER
161
1
10
21
A
SER
161
A
SER
161
HELX_P
A
ARG
170
A
ARG
170
1
11
10
A
ASN
197
A
ASN
197
HELX_P
A
LYS
215
A
LYS
215
1
12
19
metalc
2.337
A
CYS
42
A
SG
CYS
42
1_555
A
ZN
301
B
ZN
ZN
1_555
metalc
2.096
A
ASP
44
A
OD2
ASP
44
1_555
A
ZN
301
B
ZN
ZN
1_555
metalc
2.208
A
HIS
98
A
NE2
HIS
98
1_555
A
ZN
301
B
ZN
ZN
1_555
metalc
2.369
A
CYS
101
A
SG
CYS
101
1_555
A
ZN
301
B
ZN
ZN
1_555
LYASE
carbonic anhydrase, metalloenzyme, zinc coordination, pH-dependent activity, MAD phasing, LYASE
CAN_ECOLI
UNP
1
1
P61517
MKDIDTLISNNALWSKMLVEEDPGFFEKLAQAQKPRFLWIGCSDSRVPAERLTGLEPGELFVHRNVANLVIHTDLNCLSV
VQYAVDVLEVEHIIICGHYGCGGVQAAVENPELGLINNWLLHIRDIWFKHSSLLGEMPQERRLDTLCELNVMEQVYNLGH
STIMQSAWKRGQKVTIHGWAYGIHDGLLRDLDVTATNRETLEQRYRHGISNLKLKHANHK
1
220
1I6P
1
220
P61517
A
1
1
220
5
parallel
parallel
parallel
anti-parallel
A
LEU
60
A
LEU
60
A
ASN
65
A
ASN
65
A
PHE
37
A
PHE
37
A
CYS
42
A
CYS
42
A
HIS
92
A
HIS
92
A
HIS
98
A
HIS
98
A
THR
175
A
THR
175
A
TYR
181
A
TYR
181
A
LEU
188
A
LEU
188
A
ASP
190
A
ASP
190
BINDING SITE FOR RESIDUE ZN A 301
A
ZN
301
Software
4
A
CYS
42
A
CYS
42
4
1_555
A
ASP
44
A
ASP
44
4
1_555
A
HIS
98
A
HIS
98
4
1_555
A
CYS
101
A
CYS
101
4
1_555
94
P 42 21 2