0.018100
0.000000
0.000000
0.000000
0.018100
0.000000
0.000000
0.000000
0.010477
0.00000
0.00000
0.00000
Stout, C.D.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
8
90.00
90.00
90.00
55.250
55.250
95.450
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
Fe3 S4
295.795
FE3-S4 CLUSTER
non-polymer
C5 H10 N2 O3
146.144
y
GLUTAMINE
L-peptide linking
C5 H9 N O4
147.129
y
GLUTAMIC ACID
L-peptide linking
C2 H5 N O2
75.067
y
GLYCINE
peptide linking
C6 H10 N3 O2 1
156.162
y
HISTIDINE
L-peptide linking
H2 O
18.015
WATER
non-polymer
C6 H13 N O2
131.173
y
ISOLEUCINE
L-peptide linking
C6 H13 N O2
131.173
y
LEUCINE
L-peptide linking
C6 H15 N2 O2 1
147.195
y
LYSINE
L-peptide linking
C5 H11 N O2 S
149.211
y
METHIONINE
L-peptide linking
C9 H11 N O2
165.189
y
PHENYLALANINE
L-peptide linking
C5 H9 N O2
115.130
y
PROLINE
L-peptide linking
C3 H7 N O3
105.093
y
SERINE
L-peptide linking
Fe4 S4
351.640
IRON/SULFUR CLUSTER
non-polymer
C4 H9 N O3
119.119
y
THREONINE
L-peptide linking
C11 H12 N2 O2
204.225
y
TRYPTOPHAN
L-peptide linking
C9 H11 N O3
181.189
y
TYROSINE
L-peptide linking
C5 H11 N O2
117.146
y
VALINE
L-peptide linking
N
1
N
N
N
2
S
C
N
3
N
C
N
4
N
O
N
5
N
C
N
6
N
O
N
7
N
H
N
8
N
H
N
9
N
H
N
10
N
H
N
11
N
H
N
12
N
H
N
13
N
H
N
14
N
N
N
15
S
C
N
16
N
C
N
17
N
O
N
18
N
C
N
19
N
C
N
20
N
C
N
21
N
N
N
22
N
C
N
23
N
N
N
24
N
N
N
25
N
O
N
26
N
H
N
27
N
H
N
28
N
H
N
29
N
H
N
30
N
H
N
31
N
H
N
32
N
H
N
33
N
H
N
34
N
H
N
35
N
H
N
36
N
H
N
37
N
H
N
38
N
H
N
39
N
H
N
40
N
H
N
41
N
N
N
42
S
C
N
43
N
C
N
44
N
O
N
45
N
C
N
46
N
C
N
47
N
O
N
48
N
N
N
49
N
O
N
50
N
H
N
51
N
H
N
52
N
H
N
53
N
H
N
54
N
H
N
55
N
H
N
56
N
H
N
57
N
H
N
58
N
N
N
59
S
C
N
60
N
C
N
61
N
O
N
62
N
C
N
63
N
C
N
64
N
O
N
65
N
O
N
66
N
O
N
67
N
H
N
68
N
H
N
69
N
H
N
70
N
H
N
71
N
H
N
72
N
H
N
73
N
H
N
74
N
N
N
75
R
C
N
76
N
C
N
77
N
O
N
78
N
C
N
79
N
S
N
80
N
O
N
81
N
H
N
82
N
H
N
83
N
H
N
84
N
H
N
85
N
H
N
86
N
H
N
87
N
H
N
88
N
FE
N
89
N
FE
N
90
N
FE
N
91
N
S
N
92
N
S
N
93
N
S
N
94
N
S
N
95
N
N
N
96
S
C
N
97
N
C
N
98
N
O
N
99
N
C
N
100
N
C
N
101
N
C
N
102
N
O
N
103
N
N
N
104
N
O
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
H
N
114
N
H
N
115
N
N
N
116
S
C
N
117
N
C
N
118
N
O
N
119
N
C
N
120
N
C
N
121
N
C
N
122
N
O
N
123
N
O
N
124
N
O
N
125
N
H
N
126
N
H
N
127
N
H
N
128
N
H
N
129
N
H
N
130
N
H
N
131
N
H
N
132
N
H
N
133
N
H
N
134
N
N
N
135
N
C
N
136
N
C
N
137
N
O
N
138
N
O
N
139
N
H
N
140
N
H
N
141
N
H
N
142
N
H
N
143
N
H
N
144
N
N
N
145
S
C
N
146
N
C
N
147
N
O
N
148
N
C
Y
149
N
C
Y
150
N
N
Y
151
N
C
Y
152
N
C
Y
153
N
N
N
154
N
O
N
155
N
H
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
O
N
166
N
H
N
167
N
H
N
168
N
N
N
169
S
C
N
170
N
C
N
171
N
O
N
172
S
C
N
173
N
C
N
174
N
C
N
175
N
C
N
176
N
O
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
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
N
N
191
S
C
N
192
N
C
N
193
N
O
N
194
N
C
N
195
N
C
N
196
N
C
N
197
N
C
N
198
N
O
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
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
N
N
213
S
C
N
214
N
C
N
215
N
O
N
216
N
C
N
217
N
C
N
218
N
C
N
219
N
C
N
220
N
N
N
221
N
O
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
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
N
N
238
S
C
N
239
N
C
N
240
N
O
N
241
N
C
N
242
N
C
N
243
N
S
N
244
N
C
N
245
N
O
N
246
N
H
N
247
N
H
N
248
N
H
N
249
N
H
N
250
N
H
N
251
N
H
N
252
N
H
N
253
N
H
N
254
N
H
N
255
N
H
N
256
N
H
N
257
N
N
N
258
S
C
N
259
N
C
N
260
N
O
N
261
N
C
Y
262
N
C
Y
263
N
C
Y
264
N
C
Y
265
N
C
Y
266
N
C
Y
267
N
C
N
268
N
O
N
269
N
H
N
270
N
H
N
271
N
H
N
272
N
H
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
N
N
281
S
C
N
282
N
C
N
283
N
O
N
284
N
C
N
285
N
C
N
286
N
C
N
287
N
O
N
288
N
H
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
H
N
297
N
N
N
298
S
C
N
299
N
C
N
300
N
O
N
301
N
C
N
302
N
O
N
303
N
O
N
304
N
H
N
305
N
H
N
306
N
H
N
307
N
H
N
308
N
H
N
309
N
H
N
310
N
H
N
311
N
FE
N
312
N
FE
N
313
N
FE
N
314
N
FE
N
315
N
S
N
316
N
S
N
317
N
S
N
318
N
S
N
319
N
N
N
320
S
C
N
321
N
C
N
322
N
O
N
323
R
C
N
324
N
O
N
325
N
C
N
326
N
O
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
H
N
335
N
H
N
336
N
N
N
337
S
C
N
338
N
C
N
339
N
O
N
340
N
C
Y
341
N
C
Y
342
N
C
Y
343
N
C
Y
344
N
N
Y
345
N
C
Y
346
N
C
Y
347
N
C
Y
348
N
C
Y
349
N
C
N
350
N
O
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
H
N
362
N
H
N
363
N
N
N
364
S
C
N
365
N
C
N
366
N
O
N
367
N
C
Y
368
N
C
Y
369
N
C
Y
370
N
C
Y
371
N
C
Y
372
N
C
Y
373
N
C
N
374
N
O
N
375
N
O
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
H
N
386
N
H
N
387
N
N
N
388
S
C
N
389
N
C
N
390
N
O
N
391
N
C
N
392
N
C
N
393
N
C
N
394
N
O
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
H
N
405
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
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
doub
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
doub
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
sing
N
114
N
sing
N
115
N
sing
N
116
N
sing
N
117
N
doub
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
doub
N
126
N
sing
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
N
140
N
sing
N
141
N
sing
N
142
N
sing
N
143
N
sing
N
144
N
doub
N
145
N
sing
N
146
N
sing
N
147
N
sing
N
148
N
sing
Y
149
N
sing
Y
150
N
doub
Y
151
N
doub
N
152
N
sing
Y
153
N
sing
N
154
N
sing
Y
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
sing
N
167
N
doub
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
sing
N
188
N
doub
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
doub
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
doub
N
234
N
sing
N
235
N
sing
N
236
N
sing
N
237
N
sing
N
238
N
sing
N
239
N
sing
N
240
N
sing
N
241
N
sing
N
242
N
sing
N
243
N
sing
N
244
N
sing
N
245
N
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
doub
N
253
N
sing
N
254
N
sing
N
255
N
sing
N
256
N
sing
Y
257
N
doub
Y
258
N
sing
Y
259
N
sing
N
260
N
sing
Y
261
N
doub
N
262
N
sing
Y
263
N
doub
N
264
N
sing
Y
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
doub
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
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
doub
N
293
N
sing
N
294
N
sing
N
295
N
sing
N
296
N
sing
N
297
N
sing
N
298
N
sing
N
299
N
sing
N
300
N
sing
N
301
N
sing
N
302
N
sing
N
303
N
sing
N
304
N
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
sing
N
313
N
sing
N
314
N
sing
N
315
N
sing
N
316
N
sing
N
317
N
doub
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
sing
N
325
N
sing
N
326
N
sing
N
327
N
sing
N
328
N
sing
N
329
N
sing
N
330
N
sing
N
331
N
sing
N
332
N
sing
N
333
N
doub
N
334
N
sing
N
335
N
sing
N
336
N
sing
N
337
N
sing
Y
338
N
doub
Y
339
N
sing
Y
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
sing
Y
347
N
doub
N
348
N
sing
Y
349
N
doub
N
350
N
sing
Y
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
Y
366
N
doub
Y
367
N
sing
Y
368
N
sing
N
369
N
sing
Y
370
N
doub
N
371
N
sing
Y
372
N
doub
N
373
N
sing
Y
374
N
sing
N
375
N
sing
N
376
N
sing
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
doub
N
386
N
sing
N
387
N
sing
N
388
N
sing
N
389
N
sing
N
390
N
sing
N
391
N
sing
N
392
N
sing
N
393
N
sing
N
394
N
sing
N
395
N
sing
N
396
N
sing
US
Proc.Natl.Acad.Sci.USA
PNASA6
0040
0027-8424
92
10064
10068
10.1073/pnas.92.22.10064
7479727
Site-directed mutagenesis of Azotobacter vinelandii ferredoxin I: cysteine ligation of the [4Fe-4S] cluster with protein rearrangement is preferred over serine ligation.
1995
10.2210/pdb1frx/pdb
pdb_00001frx
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
1
x-ray
1
1.0
12043.466
FERREDOXIN
1
man
polymer
351.640
IRON/SULFUR CLUSTER
1
syn
non-polymer
295.795
FE3-S4 CLUSTER
1
syn
non-polymer
18.015
water
22
nat
water
no
no
AFVVTDNCIKCKYTDCVEVSPVDCFYEGPNFLVIHPDECIDCALCEPECPAQAIFSEDEVPEDMQEFIQLNAELAEVWPN
ITEKKDPLPDAEDWDGVKGKLQHLER
AFVVTDNCIKCKYTDCVEVSPVDCFYEGPNFLVIHPDECIDCALCEPECPAQAIFSEDEVPEDMQEFIQLNAELAEVWPN
ITEKKDPLPDAEDWDGVKGKLQHLER
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
Azotobacter
sample
354
Azotobacter vinelandii
PKT230
3.02
59.30
chem_comp_atom
chem_comp_bond
database_2
pdbx_database_status
struct_ref_seq_dif
struct_site
repository
Initial release
Version format compliance
Version format compliance
Data collection
Database references
Derived calculations
Other
1
0
1994-08-31
1
1
2008-03-24
1
2
2011-07-13
1
3
2024-02-07
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_pdbx_database_status.process_site
_struct_ref_seq_dif.details
_struct_site.pdbx_auth_asym_id
_struct_site.pdbx_auth_comp_id
_struct_site.pdbx_auth_seq_id
Y
BNL
1994-07-13
REL
SF4
IRON/SULFUR CLUSTER
F3S
FE3-S4 CLUSTER
HOH
water
IN THIS MUTANT A LIGAND TO THE 4FE CLUSTER, CYS 20, HAS
BEEN CHANGED TO SER 20. CONSEQUENTLY, FE4 OF THE 4FE
CLUSTER ACQUIRES A NEW LIGAND, CYS 24. CYS 24 IS NOT A
LIGAND TO FE IN NATIVE FDI. THIS SAME ACQUISITION OF A NEW
LIGAND OCCURS IN THE C20A MUTANT OF FDI (PROTEIN DATA BANK
ENTRY 1FD2). IN THE STRUCTURE OF C20S FDI, ATOM OG SER 20
IS 2.7 ANGSTROMS FROM FE4 AND 2.5 ANGSTROMS FROM SG CYS 24.
FS4
107
2
SF4
SF4
107
A
FS3
108
3
F3S
F3S
108
A
HOH
110
4
HOH
HOH
110
A
HOH
111
4
HOH
HOH
111
A
HOH
112
4
HOH
HOH
112
A
HOH
113
4
HOH
HOH
113
A
HOH
114
4
HOH
HOH
114
A
HOH
116
4
HOH
HOH
116
A
HOH
117
4
HOH
HOH
117
A
HOH
118
4
HOH
HOH
118
A
HOH
119
4
HOH
HOH
119
A
HOH
120
4
HOH
HOH
120
A
HOH
121
4
HOH
HOH
121
A
HOH
122
4
HOH
HOH
122
A
HOH
126
4
HOH
HOH
126
A
HOH
127
4
HOH
HOH
127
A
HOH
128
4
HOH
HOH
128
A
HOH
129
4
HOH
HOH
129
A
HOH
130
4
HOH
HOH
130
A
HOH
132
4
HOH
HOH
132
A
HOH
136
4
HOH
HOH
136
A
HOH
137
4
HOH
HOH
137
A
HOH
140
4
HOH
HOH
140
A
HOH
153
4
HOH
HOH
153
A
ALA
1
n
1
ALA
1
A
PHE
2
n
2
PHE
2
A
VAL
3
n
3
VAL
3
A
VAL
4
n
4
VAL
4
A
THR
5
n
5
THR
5
A
ASP
6
n
6
ASP
6
A
ASN
7
n
7
ASN
7
A
CYS
8
n
8
CYS
8
A
ILE
9
n
9
ILE
9
A
LYS
10
n
10
LYS
10
A
CYS
11
n
11
CYS
11
A
LYS
12
n
12
LYS
12
A
TYR
13
n
13
TYR
13
A
THR
14
n
14
THR
14
A
ASP
15
n
15
ASP
15
A
CYS
16
n
16
CYS
16
A
VAL
17
n
17
VAL
17
A
GLU
18
n
18
GLU
18
A
VAL
19
n
19
VAL
19
A
SER
20
n
20
SER
20
A
PRO
21
n
21
PRO
21
A
VAL
22
n
22
VAL
22
A
ASP
23
n
23
ASP
23
A
CYS
24
n
24
CYS
24
A
PHE
25
n
25
PHE
25
A
TYR
26
n
26
TYR
26
A
GLU
27
n
27
GLU
27
A
GLY
28
n
28
GLY
28
A
PRO
29
n
29
PRO
29
A
ASN
30
n
30
ASN
30
A
PHE
31
n
31
PHE
31
A
LEU
32
n
32
LEU
32
A
VAL
33
n
33
VAL
33
A
ILE
34
n
34
ILE
34
A
HIS
35
n
35
HIS
35
A
PRO
36
n
36
PRO
36
A
ASP
37
n
37
ASP
37
A
GLU
38
n
38
GLU
38
A
CYS
39
n
39
CYS
39
A
ILE
40
n
40
ILE
40
A
ASP
41
n
41
ASP
41
A
CYS
42
n
42
CYS
42
A
ALA
43
n
43
ALA
43
A
LEU
44
n
44
LEU
44
A
CYS
45
n
45
CYS
45
A
GLU
46
n
46
GLU
46
A
PRO
47
n
47
PRO
47
A
GLU
48
n
48
GLU
48
A
CYS
49
n
49
CYS
49
A
PRO
50
n
50
PRO
50
A
ALA
51
n
51
ALA
51
A
GLN
52
n
52
GLN
52
A
ALA
53
n
53
ALA
53
A
ILE
54
n
54
ILE
54
A
PHE
55
n
55
PHE
55
A
SER
56
n
56
SER
56
A
GLU
57
n
57
GLU
57
A
ASP
58
n
58
ASP
58
A
GLU
59
n
59
GLU
59
A
VAL
60
n
60
VAL
60
A
PRO
61
n
61
PRO
61
A
GLU
62
n
62
GLU
62
A
ASP
63
n
63
ASP
63
A
MET
64
n
64
MET
64
A
GLN
65
n
65
GLN
65
A
GLU
66
n
66
GLU
66
A
PHE
67
n
67
PHE
67
A
ILE
68
n
68
ILE
68
A
GLN
69
n
69
GLN
69
A
LEU
70
n
70
LEU
70
A
ASN
71
n
71
ASN
71
A
ALA
72
n
72
ALA
72
A
GLU
73
n
73
GLU
73
A
LEU
74
n
74
LEU
74
A
ALA
75
n
75
ALA
75
A
GLU
76
n
76
GLU
76
A
VAL
77
n
77
VAL
77
A
TRP
78
n
78
TRP
78
A
PRO
79
n
79
PRO
79
A
ASN
80
n
80
ASN
80
A
ILE
81
n
81
ILE
81
A
THR
82
n
82
THR
82
A
GLU
83
n
83
GLU
83
A
LYS
84
n
84
LYS
84
A
LYS
85
n
85
LYS
85
A
ASP
86
n
86
ASP
86
A
PRO
87
n
87
PRO
87
A
LEU
88
n
88
LEU
88
A
PRO
89
n
89
PRO
89
A
ASP
90
n
90
ASP
90
A
ALA
91
n
91
ALA
91
A
GLU
92
n
92
GLU
92
A
ASP
93
n
93
ASP
93
A
TRP
94
n
94
TRP
94
A
ASP
95
n
95
ASP
95
A
GLY
96
n
96
GLY
96
A
VAL
97
n
97
VAL
97
A
LYS
98
n
98
LYS
98
A
GLY
99
n
99
GLY
99
A
LYS
100
n
100
LYS
100
A
LEU
101
n
101
LEU
101
A
GLN
102
n
102
GLN
102
A
HIS
103
n
103
HIS
103
A
LEU
104
n
104
LEU
104
A
GLU
105
n
105
GLU
105
A
ARG
106
n
106
ARG
106
A
author_defined_assembly
1
monomeric
A
CYS
8
A
SG
CYS
8
1_555
A
F3S
108
C
FE3
F3S
1_555
A
F3S
108
C
S1
F3S
1_555
107.4
A
CYS
8
A
SG
CYS
8
1_555
A
F3S
108
C
FE3
F3S
1_555
A
F3S
108
C
S3
F3S
1_555
115.3
A
F3S
108
C
S1
F3S
1_555
A
F3S
108
C
FE3
F3S
1_555
A
F3S
108
C
S3
F3S
1_555
111.2
A
CYS
8
A
SG
CYS
8
1_555
A
F3S
108
C
FE3
F3S
1_555
A
F3S
108
C
S4
F3S
1_555
105.5
A
F3S
108
C
S1
F3S
1_555
A
F3S
108
C
FE3
F3S
1_555
A
F3S
108
C
S4
F3S
1_555
114.6
A
F3S
108
C
S3
F3S
1_555
A
F3S
108
C
FE3
F3S
1_555
A
F3S
108
C
S4
F3S
1_555
102.8
A
CYS
16
A
SG
CYS
16
1_555
A
F3S
108
C
FE1
F3S
1_555
A
F3S
108
C
S1
F3S
1_555
111.4
A
CYS
16
A
SG
CYS
16
1_555
A
F3S
108
C
FE1
F3S
1_555
A
F3S
108
C
S2
F3S
1_555
99.3
A
F3S
108
C
S1
F3S
1_555
A
F3S
108
C
FE1
F3S
1_555
A
F3S
108
C
S2
F3S
1_555
106.4
A
CYS
16
A
SG
CYS
16
1_555
A
F3S
108
C
FE1
F3S
1_555
A
F3S
108
C
S3
F3S
1_555
119.1
A
F3S
108
C
S1
F3S
1_555
A
F3S
108
C
FE1
F3S
1_555
A
F3S
108
C
S3
F3S
1_555
109.8
A
F3S
108
C
S2
F3S
1_555
A
F3S
108
C
FE1
F3S
1_555
A
F3S
108
C
S3
F3S
1_555
109.7
A
CYS
24
A
SG
CYS
24
1_555
A
SF4
107
B
FE4
SF4
1_555
A
SF4
107
B
S1
SF4
1_555
129.1
A
CYS
24
A
SG
CYS
24
1_555
A
SF4
107
B
FE4
SF4
1_555
A
SF4
107
B
S2
SF4
1_555
97.9
A
SF4
107
B
S1
SF4
1_555
A
SF4
107
B
FE4
SF4
1_555
A
SF4
107
B
S2
SF4
1_555
109.5
A
CYS
24
A
SG
CYS
24
1_555
A
SF4
107
B
FE4
SF4
1_555
A
SF4
107
B
S3
SF4
1_555
107.5
A
SF4
107
B
S1
SF4
1_555
A
SF4
107
B
FE4
SF4
1_555
A
SF4
107
B
S3
SF4
1_555
101.3
A
SF4
107
B
S2
SF4
1_555
A
SF4
107
B
FE4
SF4
1_555
A
SF4
107
B
S3
SF4
1_555
111.4
A
CYS
39
A
SG
CYS
39
1_555
A
SF4
107
B
FE1
SF4
1_555
A
SF4
107
B
S2
SF4
1_555
108.3
A
CYS
39
A
SG
CYS
39
1_555
A
SF4
107
B
FE1
SF4
1_555
A
SF4
107
B
S3
SF4
1_555
112.6
A
SF4
107
B
S2
SF4
1_555
A
SF4
107
B
FE1
SF4
1_555
A
SF4
107
B
S3
SF4
1_555
113.2
A
CYS
39
A
SG
CYS
39
1_555
A
SF4
107
B
FE1
SF4
1_555
A
SF4
107
B
S4
SF4
1_555
106.0
A
SF4
107
B
S2
SF4
1_555
A
SF4
107
B
FE1
SF4
1_555
A
SF4
107
B
S4
SF4
1_555
107.2
A
SF4
107
B
S3
SF4
1_555
A
SF4
107
B
FE1
SF4
1_555
A
SF4
107
B
S4
SF4
1_555
109.2
A
CYS
42
A
SG
CYS
42
1_555
A
SF4
107
B
FE2
SF4
1_555
A
SF4
107
B
S1
SF4
1_555
105.3
A
CYS
42
A
SG
CYS
42
1_555
A
SF4
107
B
FE2
SF4
1_555
A
SF4
107
B
S3
SF4
1_555
116.9
A
SF4
107
B
S1
SF4
1_555
A
SF4
107
B
FE2
SF4
1_555
A
SF4
107
B
S3
SF4
1_555
105.8
A
CYS
42
A
SG
CYS
42
1_555
A
SF4
107
B
FE2
SF4
1_555
A
SF4
107
B
S4
SF4
1_555
112.6
A
SF4
107
B
S1
SF4
1_555
A
SF4
107
B
FE2
SF4
1_555
A
SF4
107
B
S4
SF4
1_555
107.4
A
SF4
107
B
S3
SF4
1_555
A
SF4
107
B
FE2
SF4
1_555
A
SF4
107
B
S4
SF4
1_555
108.3
A
CYS
45
A
SG
CYS
45
1_555
A
SF4
107
B
FE3
SF4
1_555
A
SF4
107
B
S1
SF4
1_555
108.7
A
CYS
45
A
SG
CYS
45
1_555
A
SF4
107
B
FE3
SF4
1_555
A
SF4
107
B
S2
SF4
1_555
120.1
A
SF4
107
B
S1
SF4
1_555
A
SF4
107
B
FE3
SF4
1_555
A
SF4
107
B
S2
SF4
1_555
109.6
A
CYS
45
A
SG
CYS
45
1_555
A
SF4
107
B
FE3
SF4
1_555
A
SF4
107
B
S4
SF4
1_555
103.0
A
SF4
107
B
S1
SF4
1_555
A
SF4
107
B
FE3
SF4
1_555
A
SF4
107
B
S4
SF4
1_555
107.6
A
SF4
107
B
S2
SF4
1_555
A
SF4
107
B
FE3
SF4
1_555
A
SF4
107
B
S4
SF4
1_555
107.1
A
CYS
49
A
SG
CYS
49
1_555
A
F3S
108
C
FE4
F3S
1_555
A
F3S
108
C
S2
F3S
1_555
121.1
A
CYS
49
A
SG
CYS
49
1_555
A
F3S
108
C
FE4
F3S
1_555
A
F3S
108
C
S3
F3S
1_555
104.6
A
F3S
108
C
S2
F3S
1_555
A
F3S
108
C
FE4
F3S
1_555
A
F3S
108
C
S3
F3S
1_555
109.1
A
CYS
49
A
SG
CYS
49
1_555
A
F3S
108
C
FE4
F3S
1_555
A
F3S
108
C
S4
F3S
1_555
105.0
A
F3S
108
C
S2
F3S
1_555
A
F3S
108
C
FE4
F3S
1_555
A
F3S
108
C
S4
F3S
1_555
112.0
A
F3S
108
C
S3
F3S
1_555
A
F3S
108
C
FE4
F3S
1_555
A
F3S
108
C
S4
F3S
1_555
103.6
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
3
A
N
VAL
3
A
O
PHE
55
A
O
PHE
55
A
O
TYR
26
A
O
TYR
26
A
N
VAL
33
A
N
VAL
33
1
-14.03
1.70
113.30
99.27
A
A
A
CA
CB
CG
MET
MET
MET
64
64
64
N
1
5.00
0.80
106.30
111.30
A
A
A
CD1
CG
CD2
TRP
TRP
TRP
78
78
78
N
1
-5.18
0.80
107.30
102.12
A
A
A
CE2
CD2
CG
TRP
TRP
TRP
78
78
78
N
1
6.88
0.80
106.30
113.18
A
A
A
CD1
CG
CD2
TRP
TRP
TRP
94
94
94
N
1
-9.97
1.30
127.00
117.03
A
A
A
CB
CG
CD1
TRP
TRP
TRP
94
94
94
N
1
-5.83
0.80
107.30
101.47
A
A
A
CE2
CD2
CG
TRP
TRP
TRP
94
94
94
N
1
5.59
0.90
133.90
139.49
A
A
A
CG
CD2
CE3
TRP
TRP
TRP
94
94
94
N
1
3.08
0.50
120.30
123.38
A
A
A
NE
CZ
NH1
ARG
ARG
ARG
106
106
106
N
1
-4.42
0.50
120.30
115.88
A
A
A
NE
CZ
NH2
ARG
ARG
ARG
106
106
106
N
1
A
A
NE2
CD2
HIS
HIS
35
35
-0.080
0.011
1.373
1.293
N
1
A
A
NE2
CD2
HIS
HIS
103
103
-0.071
0.011
1.373
1.302
N
1
A
THR
5
-105.92
-163.79
1
A
CYS
11
-108.38
-62.46
1
A
THR
14
54.20
13.52
1
A
ASP
23
-88.86
49.28
1
A
ASN
30
-143.92
27.95
1
A
ASP
63
-69.78
2.98
23.1
0.229
0.229
2.5
8.0
5158
1
0.0
2.5
8.0
22
878
15
0
841
0.017
3.54
1FRX
5700
0.0
1
91.9
model building
X-PLOR
refinement
X-PLOR
phasing
X-PLOR
STRUCTURE AND PROPERTIES OF C20S FDI MUTANT
1
N
N
2
N
N
3
N
N
4
N
N
A
ASP
6
A
ASP
6
HELX_P
A
ILE
9
A
ILE
9
5
1
4
A
THR
14
A
THR
14
HELX_P
A
SER
20
A
SER
20
1
2
7
A
CYS
45
A
CYS
45
HELX_P
A
CYS
49
A
CYS
49
5
3
5
A
ASP
58
A
ASP
58
HELX_P
A
VAL
60
A
VAL
60
5
4
3
A
PRO
61
A
PRO
61
HELX_P
A
MET
64
A
MET
64
5
5
4
A
GLN
65
A
GLN
65
HELX_P
A
GLU
76
A
GLU
76
1
6
12
A
ASP
90
A
ASP
90
HELX_P
A
ASP
95
A
ASP
95
1
7
6
A
GLY
99
A
GLY
99
HELX_P
A
LEU
104
A
LEU
104
5
8
6
metalc
2.292
A
CYS
8
A
SG
CYS
8
1_555
A
F3S
108
C
FE3
F3S
1_555
metalc
2.306
A
CYS
16
A
SG
CYS
16
1_555
A
F3S
108
C
FE1
F3S
1_555
metalc
2.336
A
CYS
24
A
SG
CYS
24
1_555
A
SF4
107
B
FE4
SF4
1_555
metalc
2.348
A
CYS
39
A
SG
CYS
39
1_555
A
SF4
107
B
FE1
SF4
1_555
metalc
2.341
A
CYS
42
A
SG
CYS
42
1_555
A
SF4
107
B
FE2
SF4
1_555
metalc
2.338
A
CYS
45
A
SG
CYS
45
1_555
A
SF4
107
B
FE3
SF4
1_555
metalc
2.295
A
CYS
49
A
SG
CYS
49
1_555
A
F3S
108
C
FE4
F3S
1_555
ELECTRON TRANSPORT
ELECTRON TRANSPORT
FER1_AZOVI
UNP
1
1
P00214
AFVVTDNCIKCKYTDCVEVCPVDCFYEGPNFLVIHPDECIDCALCEPECPAQAIFSEDEVPEDMQEFIQLNAELAEVWPN
ITEKKDPLPDAEDWDGVKGKLQHLER
1
106
1FRX
1
106
P00214
A
1
1
106
1
CYS
conflict
SER
20
1FRX
A
P00214
UNP
20
20
2
2
anti-parallel
anti-parallel
A
PHE
2
A
PHE
2
A
VAL
4
A
VAL
4
A
ILE
54
A
ILE
54
A
SER
56
A
SER
56
A
PHE
25
A
PHE
25
A
GLU
27
A
GLU
27
A
LEU
32
A
LEU
32
A
ILE
34
A
ILE
34
BINDING SITE FOR RESIDUE SF4 A 107
A
SF4
107
Software
10
BINDING SITE FOR RESIDUE F3S A 108
A
F3S
108
Software
9
A
PHE
2
A
PHE
2
10
1_555
A
SER
20
A
SER
20
10
1_555
A
VAL
22
A
VAL
22
10
1_555
A
CYS
24
A
CYS
24
10
1_555
A
ILE
34
A
ILE
34
10
1_555
A
CYS
39
A
CYS
39
10
1_555
A
ILE
40
A
ILE
40
10
1_555
A
CYS
42
A
CYS
42
10
1_555
A
ALA
43
A
ALA
43
10
1_555
A
CYS
45
A
CYS
45
10
1_555
A
CYS
8
A
CYS
8
9
1_555
A
LYS
12
A
LYS
12
9
1_555
A
TYR
13
A
TYR
13
9
1_555
A
THR
14
A
THR
14
9
1_555
A
ASP
15
A
ASP
15
9
1_555
A
CYS
16
A
CYS
16
9
1_555
A
CYS
49
A
CYS
49
9
1_555
A
PRO
50
A
PRO
50
9
1_555
A
ALA
51
A
ALA
51
9
1_555
92
P 41 21 2