0.014249
0.000000
0.001066
0.000000
0.023540
0.000000
0.000000
0.000000
0.018935
0.000000
0.000000
0.000000
Roberts, S.A.
Weichsel, A.
Qui, Y.
Shelnutt, J.A.
Walker, F.A.
Montfort, W.R.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
4
90.00
94.28
90.00
70.180
42.480
52.960
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
C34 H32 Fe N4 O4
616.487
PROTOPORPHYRIN IX CONTAINING FE
HEME
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
C3 H5 N2 1
69.085
IMIDAZOLE
non-polymer
C6 H13 N O2
131.173
y
LEUCINE
L-peptide linking
C6 H15 N2 O2 1
147.195
y
LYSINE
L-peptide linking
C5 H11 N O2 S
149.211
y
METHIONINE
L-peptide linking
C9 H11 N O2
165.189
y
PHENYLALANINE
L-peptide linking
C5 H9 N O2
115.130
y
PROLINE
L-peptide linking
C3 H7 N O3
105.093
y
SERINE
L-peptide linking
C4 H9 N O3
119.119
y
THREONINE
L-peptide linking
C11 H12 N2 O2
204.225
y
TRYPTOPHAN
L-peptide linking
C9 H11 N O3
181.189
y
TYROSINE
L-peptide linking
C5 H11 N O2
117.146
y
VALINE
L-peptide linking
N
1
N
N
N
2
S
C
N
3
N
C
N
4
N
O
N
5
N
C
N
6
N
O
N
7
N
H
N
8
N
H
N
9
N
H
N
10
N
H
N
11
N
H
N
12
N
H
N
13
N
H
N
14
N
N
N
15
S
C
N
16
N
C
N
17
N
O
N
18
N
C
N
19
N
C
N
20
N
C
N
21
N
N
N
22
N
C
N
23
N
N
N
24
N
N
N
25
N
O
N
26
N
H
N
27
N
H
N
28
N
H
N
29
N
H
N
30
N
H
N
31
N
H
N
32
N
H
N
33
N
H
N
34
N
H
N
35
N
H
N
36
N
H
N
37
N
H
N
38
N
H
N
39
N
H
N
40
N
H
N
41
N
N
N
42
S
C
N
43
N
C
N
44
N
O
N
45
N
C
N
46
N
C
N
47
N
O
N
48
N
N
N
49
N
O
N
50
N
H
N
51
N
H
N
52
N
H
N
53
N
H
N
54
N
H
N
55
N
H
N
56
N
H
N
57
N
H
N
58
N
N
N
59
S
C
N
60
N
C
N
61
N
O
N
62
N
C
N
63
N
C
N
64
N
O
N
65
N
O
N
66
N
O
N
67
N
H
N
68
N
H
N
69
N
H
N
70
N
H
N
71
N
H
N
72
N
H
N
73
N
H
N
74
N
N
N
75
R
C
N
76
N
C
N
77
N
O
N
78
N
C
N
79
N
S
N
80
N
O
N
81
N
H
N
82
N
H
N
83
N
H
N
84
N
H
N
85
N
H
N
86
N
H
N
87
N
H
N
88
N
N
N
89
S
C
N
90
N
C
N
91
N
O
N
92
N
C
N
93
N
C
N
94
N
C
N
95
N
O
N
96
N
N
N
97
N
O
N
98
N
H
N
99
N
H
N
100
N
H
N
101
N
H
N
102
N
H
N
103
N
H
N
104
N
H
N
105
N
H
N
106
N
H
N
107
N
H
N
108
N
N
N
109
S
C
N
110
N
C
N
111
N
O
N
112
N
C
N
113
N
C
N
114
N
C
N
115
N
O
N
116
N
O
N
117
N
O
N
118
N
H
N
119
N
H
N
120
N
H
N
121
N
H
N
122
N
H
N
123
N
H
N
124
N
H
N
125
N
H
N
126
N
H
N
127
N
N
N
128
N
C
N
129
N
C
N
130
N
O
N
131
N
O
N
132
N
H
N
133
N
H
N
134
N
H
N
135
N
H
N
136
N
H
N
137
N
C
N
138
N
C
N
139
N
C
N
140
N
C
Y
141
N
C
Y
142
N
C
Y
143
N
C
Y
144
N
C
N
145
N
C
N
146
N
C
N
147
N
C
N
148
N
C
N
149
N
O
N
150
N
O
N
151
N
C
N
152
N
C
N
153
N
C
N
154
N
C
N
155
N
C
N
156
N
C
N
157
N
C
Y
158
N
C
Y
159
N
C
Y
160
N
C
Y
161
N
C
N
162
N
C
N
163
N
C
N
164
N
C
N
165
N
C
N
166
N
C
N
167
N
C
N
168
N
C
N
169
N
C
N
170
N
C
N
171
N
C
N
172
N
C
N
173
N
O
N
174
N
O
Y
175
N
N
N
176
N
N
Y
177
N
N
N
178
N
N
N
179
N
FE
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
H
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
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
Y
217
N
C
Y
218
N
N
Y
219
N
C
Y
220
N
C
Y
221
N
N
N
222
N
O
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
O
N
234
N
H
N
235
N
H
N
236
N
N
N
237
S
C
N
238
N
C
N
239
N
O
N
240
S
C
N
241
N
C
N
242
N
C
N
243
N
C
N
244
N
O
N
245
N
H
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
H
Y
258
N
N
Y
259
N
C
Y
260
N
N
Y
261
N
C
Y
262
N
C
N
263
N
H
N
264
N
H
N
265
N
H
N
266
N
H
N
267
N
H
N
268
N
N
N
269
S
C
N
270
N
C
N
271
N
O
N
272
N
C
N
273
N
C
N
274
N
C
N
275
N
C
N
276
N
O
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
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
C
N
296
N
C
N
297
N
C
N
298
N
N
N
299
N
O
N
300
N
H
N
301
N
H
N
302
N
H
N
303
N
H
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
H
N
312
N
H
N
313
N
H
N
314
N
H
N
315
N
N
N
316
S
C
N
317
N
C
N
318
N
O
N
319
N
C
N
320
N
C
N
321
N
S
N
322
N
C
N
323
N
O
N
324
N
H
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
H
N
335
N
N
N
336
S
C
N
337
N
C
N
338
N
O
N
339
N
C
Y
340
N
C
Y
341
N
C
Y
342
N
C
Y
343
N
C
Y
344
N
C
Y
345
N
C
N
346
N
O
N
347
N
H
N
348
N
H
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
N
N
359
S
C
N
360
N
C
N
361
N
O
N
362
N
C
N
363
N
C
N
364
N
C
N
365
N
O
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
H
N
373
N
H
N
374
N
H
N
375
N
N
N
376
S
C
N
377
N
C
N
378
N
O
N
379
N
C
N
380
N
O
N
381
N
O
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
N
N
390
S
C
N
391
N
C
N
392
N
O
N
393
R
C
N
394
N
O
N
395
N
C
N
396
N
O
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
406
N
N
N
407
S
C
N
408
N
C
N
409
N
O
N
410
N
C
Y
411
N
C
Y
412
N
C
Y
413
N
C
Y
414
N
N
Y
415
N
C
Y
416
N
C
Y
417
N
C
Y
418
N
C
Y
419
N
C
N
420
N
O
N
421
N
H
N
422
N
H
N
423
N
H
N
424
N
H
N
425
N
H
N
426
N
H
N
427
N
H
N
428
N
H
N
429
N
H
N
430
N
H
N
431
N
H
N
432
N
H
N
433
N
N
N
434
S
C
N
435
N
C
N
436
N
O
N
437
N
C
Y
438
N
C
Y
439
N
C
Y
440
N
C
Y
441
N
C
Y
442
N
C
Y
443
N
C
N
444
N
O
N
445
N
O
N
446
N
H
N
447
N
H
N
448
N
H
N
449
N
H
N
450
N
H
N
451
N
H
N
452
N
H
N
453
N
H
N
454
N
H
N
455
N
H
N
456
N
H
N
457
N
N
N
458
S
C
N
459
N
C
N
460
N
O
N
461
N
C
N
462
N
C
N
463
N
C
N
464
N
O
N
465
N
H
N
466
N
H
N
467
N
H
N
468
N
H
N
469
N
H
N
470
N
H
N
471
N
H
N
472
N
H
N
473
N
H
N
474
N
H
N
475
N
H
N
1
N
sing
N
2
N
sing
N
3
N
sing
N
4
N
sing
N
5
N
sing
N
6
N
sing
N
7
N
doub
N
8
N
sing
N
9
N
sing
N
10
N
sing
N
11
N
sing
N
12
N
sing
N
13
N
sing
N
14
N
sing
N
15
N
sing
N
16
N
sing
N
17
N
sing
N
18
N
sing
N
19
N
doub
N
20
N
sing
N
21
N
sing
N
22
N
sing
N
23
N
sing
N
24
N
sing
N
25
N
sing
N
26
N
sing
N
27
N
sing
N
28
N
sing
N
29
N
sing
N
30
N
sing
N
31
N
sing
N
32
N
sing
N
33
N
doub
N
34
N
sing
N
35
N
sing
N
36
N
sing
N
37
N
sing
N
38
N
sing
N
39
N
sing
N
40
N
sing
N
41
N
sing
N
42
N
sing
N
43
N
sing
N
44
N
sing
N
45
N
doub
N
46
N
sing
N
47
N
sing
N
48
N
sing
N
49
N
sing
N
50
N
doub
N
51
N
sing
N
52
N
sing
N
53
N
sing
N
54
N
sing
N
55
N
sing
N
56
N
sing
N
57
N
sing
N
58
N
sing
N
59
N
sing
N
60
N
sing
N
61
N
doub
N
62
N
sing
N
63
N
sing
N
64
N
sing
N
65
N
sing
N
66
N
doub
N
67
N
sing
N
68
N
sing
N
69
N
sing
N
70
N
sing
N
71
N
sing
N
72
N
sing
N
73
N
sing
N
74
N
sing
N
75
N
sing
N
76
N
doub
N
77
N
sing
N
78
N
sing
N
79
N
sing
N
80
N
sing
N
81
N
sing
N
82
N
sing
N
83
N
sing
N
84
N
sing
N
85
N
sing
N
86
N
sing
N
87
N
sing
N
88
N
sing
N
89
N
doub
N
90
N
sing
N
91
N
sing
N
92
N
sing
N
93
N
sing
N
94
N
sing
N
95
N
sing
N
96
N
sing
N
97
N
doub
N
98
N
sing
N
99
N
sing
N
100
N
sing
N
101
N
sing
N
102
N
sing
N
103
N
sing
N
104
N
sing
N
105
N
sing
N
106
N
sing
N
107
N
sing
N
108
N
doub
N
109
N
sing
N
110
N
sing
N
111
N
sing
N
112
N
sing
N
113
N
sing
N
114
N
sing
N
115
N
sing
N
116
N
doub
N
117
N
sing
N
118
N
sing
N
119
N
sing
N
120
N
sing
N
121
N
sing
N
122
N
sing
N
123
N
sing
N
124
N
sing
N
125
N
sing
N
126
N
doub
N
127
N
sing
N
128
N
sing
N
129
N
sing
N
130
N
doub
N
131
N
sing
N
132
N
sing
N
133
N
doub
N
134
N
sing
N
135
N
sing
N
136
N
doub
N
137
N
sing
N
138
N
doub
N
139
N
sing
N
140
N
sing
Y
141
N
doub
Y
142
N
sing
Y
143
N
sing
N
144
N
sing
Y
145
N
doub
N
146
N
sing
Y
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
doub
N
158
N
sing
N
159
N
sing
N
160
N
sing
N
161
N
doub
N
162
N
sing
N
163
N
sing
N
164
N
sing
N
165
N
doub
N
166
N
sing
N
167
N
sing
N
168
N
sing
N
169
N
doub
N
170
N
sing
N
171
N
sing
N
172
N
sing
Y
173
N
sing
Y
174
N
sing
Y
175
N
doub
N
176
N
sing
Y
177
N
sing
N
178
N
sing
Y
179
N
sing
N
180
N
sing
N
181
N
sing
N
182
N
sing
N
183
N
doub
N
184
N
sing
N
185
N
sing
N
186
N
sing
N
187
N
sing
N
188
N
doub
N
189
N
doub
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
doub
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
doub
N
218
N
sing
N
219
N
sing
N
220
N
sing
N
221
N
sing
Y
222
N
sing
Y
223
N
doub
Y
224
N
doub
N
225
N
sing
Y
226
N
sing
N
227
N
sing
Y
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
doub
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
Y
255
N
sing
Y
256
N
sing
N
257
N
sing
Y
258
N
doub
N
259
N
sing
Y
260
N
sing
N
261
N
sing
Y
262
N
doub
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
doub
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
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
doub
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
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
sing
N
334
N
sing
N
335
N
doub
N
336
N
sing
N
337
N
sing
N
338
N
sing
N
339
N
sing
Y
340
N
doub
Y
341
N
sing
Y
342
N
sing
N
343
N
sing
Y
344
N
doub
N
345
N
sing
Y
346
N
doub
N
347
N
sing
Y
348
N
sing
N
349
N
sing
N
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
doub
N
359
N
sing
N
360
N
sing
N
361
N
sing
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
N
373
N
sing
N
374
N
sing
N
375
N
doub
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
sing
N
386
N
sing
N
387
N
sing
N
388
N
doub
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
N
397
N
sing
N
398
N
sing
N
399
N
sing
N
400
N
sing
N
401
N
sing
N
402
N
sing
N
403
N
sing
N
404
N
doub
N
405
N
sing
N
406
N
sing
N
407
N
sing
N
408
N
sing
Y
409
N
doub
Y
410
N
sing
Y
411
N
sing
N
412
N
sing
Y
413
N
doub
Y
414
N
sing
Y
415
N
sing
N
416
N
sing
Y
417
N
sing
Y
418
N
doub
N
419
N
sing
Y
420
N
doub
N
421
N
sing
Y
422
N
sing
N
423
N
sing
N
424
N
sing
N
425
N
sing
N
426
N
sing
N
427
N
sing
N
428
N
sing
N
429
N
sing
N
430
N
sing
N
431
N
sing
N
432
N
doub
N
433
N
sing
N
434
N
sing
N
435
N
sing
N
436
N
sing
Y
437
N
doub
Y
438
N
sing
Y
439
N
sing
N
440
N
sing
Y
441
N
doub
N
442
N
sing
Y
443
N
doub
N
444
N
sing
Y
445
N
sing
N
446
N
sing
N
447
N
sing
N
448
N
sing
N
449
N
sing
N
450
N
sing
N
451
N
sing
N
452
N
sing
N
453
N
sing
N
454
N
sing
N
455
N
sing
N
456
N
doub
N
457
N
sing
N
458
N
sing
N
459
N
sing
N
460
N
sing
N
461
N
sing
N
462
N
sing
N
463
N
sing
N
464
N
sing
N
465
N
sing
N
466
N
sing
N
467
N
sing
US
Biochemistry
BICHAW
0033
0006-2960
40
11327
11337
10.1021/bi0109257
11560480
Ligand-induced heme ruffling and bent no geometry in ultra-high-resolution structures of nitrophorin 4.
2001
10.2210/pdb1ikj/pdb
pdb_00001ikj
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
MSC Blue Confocal Mirrors
IMAGE PLATE
2001-02-02
RIGAKU RAXIS IV++
mirrors
SINGLE WAVELENGTH
M
x-ray
1
1.5418
1.0
1.5418
1.5418
ROTATING ANODE
RIGAKU RUH3R
IMIDAZOLE OCCUPIES THE FE SIXTH COORDINATION POSITION THE HEME IS DISORDERED BY A ROTATION OF 180 DEGREES AROUND THE CHA-FE-CHC AXIS. THE ONLY EVIDENCE OF THIS DISORDER IS THE APPEARANCE OF METHYL GROUPS CMB AND CMC AS VINYLS. THESE EXTRA ATOMS ARE CALLED CBBB AND CBCB. THE LOOP CONTAINING RESIDUES 125-130 IS DISORDERED. IT HAS BEEN BUILT IN TWO POSITIONS, BUT THIS MODEL DOES NOT COMPLETELY EXPLAIN THE ELECTRON DENSITY.
20292.664
NITROPHORIN 4
1
man
polymer
616.487
PROTOPORPHYRIN IX CONTAINING FE
1
syn
non-polymer
69.085
IMIDAZOLE
1
syn
non-polymer
18.015
water
276
nat
water
no
no
ACTKNAIAQTGFNKDKYFNGDVWYVTDYLDLEPDDVPKRYCAALAAGTASGKLKEALYHYDPKTQDTFYDVSELQVESLG
KYTANFKKVDKNGNVKVAVTAGNYYTFTVMYADDSSALIHTCLHKGNKDLGDLYAVLNRNKDAAAGDKVKSAVSAATLEF
SKFISTKENNCAYDNDSLKSLLTK
ACTKNAIAQTGFNKDKYFNGDVWYVTDYLDLEPDDVPKRYCAALAAGTASGKLKEALYHYDPKTQDTFYDVSELQVESLG
KYTANFKKVDKNGNVKVAVTAGNYYTFTVMYADDSSALIHTCLHKGNKDLGDLYAVLNRNKDAAAGDKVKSAVSAATLEF
SKFISTKENNCAYDNDSLKSLLTK
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
Rhodnius
Escherichia
Escherichia coli
sample
13249
Rhodnius prolixus
469008
Escherichia coli BL21(DE3)
BL21 (DE3)
PLASMID
PET-17B-NP4
1
1.94
36.58
VAPOR DIFFUSION, HANGING DROP
5.60
PEG-4000, sodium citrate, pH 5.60, VAPOR DIFFUSION, HANGING DROP, temperature 295K
295
chem_comp_atom
chem_comp_bond
database_2
pdbx_initial_refinement_model
struct_conn
struct_sheet
struct_site
repository
Initial release
Version format compliance
Version format compliance
Data collection
Database references
Derived calculations
Refinement description
1
0
2001-10-03
1
1
2008-04-27
1
2
2011-07-13
1
3
2023-08-16
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_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.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_sheet.number_strands
_struct_site.pdbx_auth_asym_id
_struct_site.pdbx_auth_comp_id
_struct_site.pdbx_auth_seq_id
NP4 complexed with NH3 (1.15 A)
NP4 complexed with NO (1.08 A)
NP4 complexed with histamine
NP4 complexed with cyanide
RCSB
Y
RCSB
2001-05-03
REL
REL
HEM
PROTOPORPHYRIN IX CONTAINING FE
IMD
IMIDAZOLE
HOH
water
1IKH
pdb entry 1IKH
PDB
experimental model
HEM
185
2
HEM
HEM
185
A
IMD
190
3
IMD
IMD
190
A
HOH
200
4
HOH
HOH
200
A
HOH
201
4
HOH
HOH
201
A
HOH
202
4
HOH
HOH
202
A
HOH
203
4
HOH
HOH
203
A
HOH
204
4
HOH
HOH
204
A
HOH
205
4
HOH
HOH
205
A
HOH
206
4
HOH
HOH
206
A
HOH
207
4
HOH
HOH
207
A
HOH
208
4
HOH
HOH
208
A
HOH
209
4
HOH
HOH
209
A
HOH
210
4
HOH
HOH
210
A
HOH
211
4
HOH
HOH
211
A
HOH
212
4
HOH
HOH
212
A
HOH
213
4
HOH
HOH
213
A
HOH
214
4
HOH
HOH
214
A
HOH
215
4
HOH
HOH
215
A
HOH
216
4
HOH
HOH
216
A
HOH
217
4
HOH
HOH
217
A
HOH
218
4
HOH
HOH
218
A
HOH
219
4
HOH
HOH
219
A
HOH
220
4
HOH
HOH
220
A
HOH
222
4
HOH
HOH
222
A
HOH
223
4
HOH
HOH
223
A
HOH
224
4
HOH
HOH
224
A
HOH
225
4
HOH
HOH
225
A
HOH
226
4
HOH
HOH
226
A
HOH
227
4
HOH
HOH
227
A
HOH
228
4
HOH
HOH
228
A
HOH
229
4
HOH
HOH
229
A
HOH
230
4
HOH
HOH
230
A
HOH
231
4
HOH
HOH
231
A
HOH
232
4
HOH
HOH
232
A
HOH
233
4
HOH
HOH
233
A
HOH
234
4
HOH
HOH
234
A
HOH
235
4
HOH
HOH
235
A
HOH
236
4
HOH
HOH
236
A
HOH
237
4
HOH
HOH
237
A
HOH
238
4
HOH
HOH
238
A
HOH
239
4
HOH
HOH
239
A
HOH
240
4
HOH
HOH
240
A
HOH
241
4
HOH
HOH
241
A
HOH
242
4
HOH
HOH
242
A
HOH
243
4
HOH
HOH
243
A
HOH
244
4
HOH
HOH
244
A
HOH
245
4
HOH
HOH
245
A
HOH
246
4
HOH
HOH
246
A
HOH
247
4
HOH
HOH
247
A
HOH
248
4
HOH
HOH
248
A
HOH
249
4
HOH
HOH
249
A
HOH
250
4
HOH
HOH
250
A
HOH
251
4
HOH
HOH
251
A
HOH
252
4
HOH
HOH
252
A
HOH
253
4
HOH
HOH
253
A
HOH
254
4
HOH
HOH
254
A
HOH
255
4
HOH
HOH
255
A
HOH
256
4
HOH
HOH
256
A
HOH
257
4
HOH
HOH
257
A
HOH
258
4
HOH
HOH
258
A
HOH
259
4
HOH
HOH
259
A
HOH
260
4
HOH
HOH
260
A
HOH
261
4
HOH
HOH
261
A
HOH
262
4
HOH
HOH
262
A
HOH
263
4
HOH
HOH
263
A
HOH
264
4
HOH
HOH
264
A
HOH
265
4
HOH
HOH
265
A
HOH
266
4
HOH
HOH
266
A
HOH
267
4
HOH
HOH
267
A
HOH
268
4
HOH
HOH
268
A
HOH
269
4
HOH
HOH
269
A
HOH
270
4
HOH
HOH
270
A
HOH
271
4
HOH
HOH
271
A
HOH
272
4
HOH
HOH
272
A
HOH
273
4
HOH
HOH
273
A
HOH
274
4
HOH
HOH
274
A
HOH
275
4
HOH
HOH
275
A
HOH
276
4
HOH
HOH
276
A
HOH
277
4
HOH
HOH
277
A
HOH
278
4
HOH
HOH
278
A
HOH
279
4
HOH
HOH
279
A
HOH
281
4
HOH
HOH
281
A
HOH
282
4
HOH
HOH
282
A
HOH
284
4
HOH
HOH
284
A
HOH
285
4
HOH
HOH
285
A
HOH
286
4
HOH
HOH
286
A
HOH
287
4
HOH
HOH
287
A
HOH
288
4
HOH
HOH
288
A
HOH
289
4
HOH
HOH
289
A
HOH
290
4
HOH
HOH
290
A
HOH
291
4
HOH
HOH
291
A
HOH
292
4
HOH
HOH
292
A
HOH
293
4
HOH
HOH
293
A
HOH
294
4
HOH
HOH
294
A
HOH
295
4
HOH
HOH
295
A
HOH
296
4
HOH
HOH
296
A
HOH
297
4
HOH
HOH
297
A
HOH
298
4
HOH
HOH
298
A
HOH
299
4
HOH
HOH
299
A
HOH
300
4
HOH
HOH
300
A
HOH
301
4
HOH
HOH
301
A
HOH
302
4
HOH
HOH
302
A
HOH
303
4
HOH
HOH
303
A
HOH
304
4
HOH
HOH
304
A
HOH
305
4
HOH
HOH
305
A
HOH
306
4
HOH
HOH
306
A
HOH
307
4
HOH
HOH
307
A
HOH
308
4
HOH
HOH
308
A
HOH
309
4
HOH
HOH
309
A
HOH
310
4
HOH
HOH
310
A
HOH
311
4
HOH
HOH
311
A
HOH
312
4
HOH
HOH
312
A
HOH
313
4
HOH
HOH
313
A
HOH
314
4
HOH
HOH
314
A
HOH
315
4
HOH
HOH
315
A
HOH
316
4
HOH
HOH
316
A
HOH
317
4
HOH
HOH
317
A
HOH
318
4
HOH
HOH
318
A
HOH
319
4
HOH
HOH
319
A
HOH
320
4
HOH
HOH
320
A
HOH
321
4
HOH
HOH
321
A
HOH
322
4
HOH
HOH
322
A
HOH
323
4
HOH
HOH
323
A
HOH
324
4
HOH
HOH
324
A
HOH
325
4
HOH
HOH
325
A
HOH
326
4
HOH
HOH
326
A
HOH
327
4
HOH
HOH
327
A
HOH
328
4
HOH
HOH
328
A
HOH
329
4
HOH
HOH
329
A
HOH
330
4
HOH
HOH
330
A
HOH
331
4
HOH
HOH
331
A
HOH
333
4
HOH
HOH
333
A
HOH
334
4
HOH
HOH
334
A
HOH
335
4
HOH
HOH
335
A
HOH
336
4
HOH
HOH
336
A
HOH
337
4
HOH
HOH
337
A
HOH
338
4
HOH
HOH
338
A
HOH
339
4
HOH
HOH
339
A
HOH
340
4
HOH
HOH
340
A
HOH
341
4
HOH
HOH
341
A
HOH
342
4
HOH
HOH
342
A
HOH
343
4
HOH
HOH
343
A
HOH
345
4
HOH
HOH
345
A
HOH
347
4
HOH
HOH
347
A
HOH
348
4
HOH
HOH
348
A
HOH
349
4
HOH
HOH
349
A
HOH
350
4
HOH
HOH
350
A
HOH
351
4
HOH
HOH
351
A
HOH
352
4
HOH
HOH
352
A
HOH
353
4
HOH
HOH
353
A
HOH
354
4
HOH
HOH
354
A
HOH
355
4
HOH
HOH
355
A
HOH
356
4
HOH
HOH
356
A
HOH
357
4
HOH
HOH
357
A
HOH
358
4
HOH
HOH
358
A
HOH
359
4
HOH
HOH
359
A
HOH
360
4
HOH
HOH
360
A
HOH
361
4
HOH
HOH
361
A
HOH
362
4
HOH
HOH
362
A
HOH
363
4
HOH
HOH
363
A
HOH
364
4
HOH
HOH
364
A
HOH
365
4
HOH
HOH
365
A
HOH
366
4
HOH
HOH
366
A
HOH
367
4
HOH
HOH
367
A
HOH
368
4
HOH
HOH
368
A
HOH
369
4
HOH
HOH
369
A
HOH
370
4
HOH
HOH
370
A
HOH
371
4
HOH
HOH
371
A
HOH
372
4
HOH
HOH
372
A
HOH
373
4
HOH
HOH
373
A
HOH
374
4
HOH
HOH
374
A
HOH
375
4
HOH
HOH
375
A
HOH
376
4
HOH
HOH
376
A
HOH
377
4
HOH
HOH
377
A
HOH
378
4
HOH
HOH
378
A
HOH
379
4
HOH
HOH
379
A
HOH
380
4
HOH
HOH
380
A
HOH
381
4
HOH
HOH
381
A
HOH
382
4
HOH
HOH
382
A
HOH
383
4
HOH
HOH
383
A
HOH
384
4
HOH
HOH
384
A
HOH
385
4
HOH
HOH
385
A
HOH
386
4
HOH
HOH
386
A
HOH
387
4
HOH
HOH
387
A
HOH
388
4
HOH
HOH
388
A
HOH
389
4
HOH
HOH
389
A
HOH
390
4
HOH
HOH
390
A
HOH
391
4
HOH
HOH
391
A
HOH
392
4
HOH
HOH
392
A
HOH
393
4
HOH
HOH
393
A
HOH
394
4
HOH
HOH
394
A
HOH
395
4
HOH
HOH
395
A
HOH
396
4
HOH
HOH
396
A
HOH
397
4
HOH
HOH
397
A
HOH
398
4
HOH
HOH
398
A
HOH
399
4
HOH
HOH
399
A
HOH
401
4
HOH
HOH
401
A
HOH
402
4
HOH
HOH
402
A
HOH
403
4
HOH
HOH
403
A
HOH
404
4
HOH
HOH
404
A
HOH
405
4
HOH
HOH
405
A
HOH
406
4
HOH
HOH
406
A
HOH
407
4
HOH
HOH
407
A
HOH
408
4
HOH
HOH
408
A
HOH
409
4
HOH
HOH
409
A
HOH
410
4
HOH
HOH
410
A
HOH
411
4
HOH
HOH
411
A
HOH
412
4
HOH
HOH
412
A
HOH
413
4
HOH
HOH
413
A
HOH
414
4
HOH
HOH
414
A
HOH
416
4
HOH
HOH
416
A
HOH
417
4
HOH
HOH
417
A
HOH
418
4
HOH
HOH
418
A
HOH
419
4
HOH
HOH
419
A
HOH
420
4
HOH
HOH
420
A
HOH
422
4
HOH
HOH
422
A
HOH
423
4
HOH
HOH
423
A
HOH
424
4
HOH
HOH
424
A
HOH
425
4
HOH
HOH
425
A
HOH
426
4
HOH
HOH
426
A
HOH
427
4
HOH
HOH
427
A
HOH
428
4
HOH
HOH
428
A
HOH
429
4
HOH
HOH
429
A
HOH
430
4
HOH
HOH
430
A
HOH
431
4
HOH
HOH
431
A
HOH
432
4
HOH
HOH
432
A
HOH
433
4
HOH
HOH
433
A
HOH
434
4
HOH
HOH
434
A
HOH
435
4
HOH
HOH
435
A
HOH
436
4
HOH
HOH
436
A
HOH
437
4
HOH
HOH
437
A
HOH
439
4
HOH
HOH
439
A
HOH
440
4
HOH
HOH
440
A
HOH
441
4
HOH
HOH
441
A
HOH
442
4
HOH
HOH
442
A
HOH
443
4
HOH
HOH
443
A
HOH
444
4
HOH
HOH
444
A
HOH
445
4
HOH
HOH
445
A
HOH
447
4
HOH
HOH
447
A
HOH
450
4
HOH
HOH
450
A
HOH
451
4
HOH
HOH
451
A
HOH
452
4
HOH
HOH
452
A
HOH
453
4
HOH
HOH
453
A
HOH
454
4
HOH
HOH
454
A
HOH
455
4
HOH
HOH
455
A
HOH
456
4
HOH
HOH
456
A
HOH
457
4
HOH
HOH
457
A
HOH
458
4
HOH
HOH
458
A
HOH
459
4
HOH
HOH
459
A
HOH
460
4
HOH
HOH
460
A
HOH
461
4
HOH
HOH
461
A
HOH
462
4
HOH
HOH
462
A
HOH
463
4
HOH
HOH
463
A
HOH
464
4
HOH
HOH
464
A
HOH
465
4
HOH
HOH
465
A
HOH
467
4
HOH
HOH
467
A
HOH
468
4
HOH
HOH
468
A
HOH
469
4
HOH
HOH
469
A
HOH
470
4
HOH
HOH
470
A
HOH
471
4
HOH
HOH
471
A
HOH
472
4
HOH
HOH
472
A
HOH
473
4
HOH
HOH
473
A
HOH
474
4
HOH
HOH
474
A
HOH
475
4
HOH
HOH
475
A
HOH
476
4
HOH
HOH
476
A
HOH
477
4
HOH
HOH
477
A
HOH
478
4
HOH
HOH
478
A
HOH
479
4
HOH
HOH
479
A
HOH
480
4
HOH
HOH
480
A
HOH
481
4
HOH
HOH
481
A
HOH
482
4
HOH
HOH
482
A
HOH
483
4
HOH
HOH
483
A
HOH
484
4
HOH
HOH
484
A
HOH
485
4
HOH
HOH
485
A
HOH
486
4
HOH
HOH
486
A
HOH
487
4
HOH
HOH
487
A
HOH
488
4
HOH
HOH
488
A
HOH
489
4
HOH
HOH
489
A
ALA
1
n
1
ALA
1
A
CYS
2
n
2
CYS
2
A
THR
3
n
3
THR
3
A
LYS
4
n
4
LYS
4
A
ASN
5
n
5
ASN
5
A
ALA
6
n
6
ALA
6
A
ILE
7
n
7
ILE
7
A
ALA
8
n
8
ALA
8
A
GLN
9
n
9
GLN
9
A
THR
10
n
10
THR
10
A
GLY
11
n
11
GLY
11
A
PHE
12
n
12
PHE
12
A
ASN
13
n
13
ASN
13
A
LYS
14
n
14
LYS
14
A
ASP
15
n
15
ASP
15
A
LYS
16
n
16
LYS
16
A
TYR
17
n
17
TYR
17
A
PHE
18
n
18
PHE
18
A
ASN
19
n
19
ASN
19
A
GLY
20
n
20
GLY
20
A
ASP
21
n
21
ASP
21
A
VAL
22
n
22
VAL
22
A
TRP
23
n
23
TRP
23
A
TYR
24
n
24
TYR
24
A
VAL
25
n
25
VAL
25
A
THR
26
n
26
THR
26
A
ASP
27
n
27
ASP
27
A
TYR
28
n
28
TYR
28
A
LEU
29
n
29
LEU
29
A
ASP
30
n
30
ASP
30
A
LEU
31
n
31
LEU
31
A
GLU
32
n
32
GLU
32
A
PRO
33
n
33
PRO
33
A
ASP
34
n
34
ASP
34
A
ASP
35
n
35
ASP
35
A
VAL
36
n
36
VAL
36
A
PRO
37
n
37
PRO
37
A
LYS
38
n
38
LYS
38
A
ARG
39
n
39
ARG
39
A
TYR
40
n
40
TYR
40
A
CYS
41
n
41
CYS
41
A
ALA
42
n
42
ALA
42
A
ALA
43
n
43
ALA
43
A
LEU
44
n
44
LEU
44
A
ALA
45
n
45
ALA
45
A
ALA
46
n
46
ALA
46
A
GLY
47
n
47
GLY
47
A
THR
48
n
48
THR
48
A
ALA
49
n
49
ALA
49
A
SER
50
n
50
SER
50
A
GLY
51
n
51
GLY
51
A
LYS
52
n
52
LYS
52
A
LEU
53
n
53
LEU
53
A
LYS
54
n
54
LYS
54
A
GLU
55
n
55
GLU
55
A
ALA
56
n
56
ALA
56
A
LEU
57
n
57
LEU
57
A
TYR
58
n
58
TYR
58
A
HIS
59
n
59
HIS
59
A
TYR
60
n
60
TYR
60
A
ASP
61
n
61
ASP
61
A
PRO
62
n
62
PRO
62
A
LYS
63
n
63
LYS
63
A
THR
64
n
64
THR
64
A
GLN
65
n
65
GLN
65
A
ASP
66
n
66
ASP
66
A
THR
67
n
67
THR
67
A
PHE
68
n
68
PHE
68
A
TYR
69
n
69
TYR
69
A
ASP
70
n
70
ASP
70
A
VAL
71
n
71
VAL
71
A
SER
72
n
72
SER
72
A
GLU
73
n
73
GLU
73
A
LEU
74
n
74
LEU
74
A
GLN
75
n
75
GLN
75
A
VAL
76
n
76
VAL
76
A
GLU
77
n
77
GLU
77
A
SER
78
n
78
SER
78
A
LEU
79
n
79
LEU
79
A
GLY
80
n
80
GLY
80
A
LYS
81
n
81
LYS
81
A
TYR
82
n
82
TYR
82
A
THR
83
n
83
THR
83
A
ALA
84
n
84
ALA
84
A
ASN
85
n
85
ASN
85
A
PHE
86
n
86
PHE
86
A
LYS
87
n
87
LYS
87
A
LYS
88
n
88
LYS
88
A
VAL
89
n
89
VAL
89
A
ASP
90
n
90
ASP
90
A
LYS
91
n
91
LYS
91
A
ASN
92
n
92
ASN
92
A
GLY
93
n
93
GLY
93
A
ASN
94
n
94
ASN
94
A
VAL
95
n
95
VAL
95
A
LYS
96
n
96
LYS
96
A
VAL
97
n
97
VAL
97
A
ALA
98
n
98
ALA
98
A
VAL
99
n
99
VAL
99
A
THR
100
n
100
THR
100
A
ALA
101
n
101
ALA
101
A
GLY
102
n
102
GLY
102
A
ASN
103
n
103
ASN
103
A
TYR
104
n
104
TYR
104
A
TYR
105
n
105
TYR
105
A
THR
106
n
106
THR
106
A
PHE
107
n
107
PHE
107
A
THR
108
n
108
THR
108
A
VAL
109
n
109
VAL
109
A
MET
110
n
110
MET
110
A
TYR
111
n
111
TYR
111
A
ALA
112
n
112
ALA
112
A
ASP
113
n
113
ASP
113
A
ASP
114
n
114
ASP
114
A
SER
115
n
115
SER
115
A
SER
116
n
116
SER
116
A
ALA
117
n
117
ALA
117
A
LEU
118
n
118
LEU
118
A
ILE
119
n
119
ILE
119
A
HIS
120
n
120
HIS
120
A
THR
121
n
121
THR
121
A
CYS
122
n
122
CYS
122
A
LEU
123
n
123
LEU
123
A
HIS
124
n
124
HIS
124
A
LYS
125
n
125
LYS
125
A
GLY
126
n
126
GLY
126
A
ASN
127
n
127
ASN
127
A
LYS
128
n
128
LYS
128
A
ASP
129
n
129
ASP
129
A
LEU
130
n
130
LEU
130
A
GLY
131
n
131
GLY
131
A
ASP
132
n
132
ASP
132
A
LEU
133
n
133
LEU
133
A
TYR
134
n
134
TYR
134
A
ALA
135
n
135
ALA
135
A
VAL
136
n
136
VAL
136
A
LEU
137
n
137
LEU
137
A
ASN
138
n
138
ASN
138
A
ARG
139
n
139
ARG
139
A
ASN
140
n
140
ASN
140
A
LYS
141
n
141
LYS
141
A
ASP
142
n
142
ASP
142
A
ALA
143
n
143
ALA
143
A
ALA
144
n
144
ALA
144
A
ALA
145
n
145
ALA
145
A
GLY
146
n
146
GLY
146
A
ASP
147
n
147
ASP
147
A
LYS
148
n
148
LYS
148
A
VAL
149
n
149
VAL
149
A
LYS
150
n
150
LYS
150
A
SER
151
n
151
SER
151
A
ALA
152
n
152
ALA
152
A
VAL
153
n
153
VAL
153
A
SER
154
n
154
SER
154
A
ALA
155
n
155
ALA
155
A
ALA
156
n
156
ALA
156
A
THR
157
n
157
THR
157
A
LEU
158
n
158
LEU
158
A
GLU
159
n
159
GLU
159
A
PHE
160
n
160
PHE
160
A
SER
161
n
161
SER
161
A
LYS
162
n
162
LYS
162
A
PHE
163
n
163
PHE
163
A
ILE
164
n
164
ILE
164
A
SER
165
n
165
SER
165
A
THR
166
n
166
THR
166
A
LYS
167
n
167
LYS
167
A
GLU
168
n
168
GLU
168
A
ASN
169
n
169
ASN
169
A
ASN
170
n
170
ASN
170
A
CYS
171
n
171
CYS
171
A
ALA
172
n
172
ALA
172
A
TYR
173
n
173
TYR
173
A
ASP
174
n
174
ASP
174
A
ASN
175
n
175
ASN
175
A
ASP
176
n
176
ASP
176
A
SER
177
n
177
SER
177
A
LEU
178
n
178
LEU
178
A
LYS
179
n
179
LYS
179
A
SER
180
n
180
SER
180
A
LEU
181
n
181
LEU
181
A
LEU
182
n
182
LEU
182
A
THR
183
n
183
THR
183
A
LYS
184
n
184
LYS
184
A
0.127
0.13
0.127
0.13
0.172
0.17
2012
2012
5.00
5
39432
author_defined_assembly
1
monomeric
A
HIS
59
A
NE2
HIS
59
1_555
A
HEM
185
B
FE
HEM
1_555
A
HEM
185
B
NA
HEM
1_555
88.0
A
HIS
59
A
NE2
HIS
59
1_555
A
HEM
185
B
FE
HEM
1_555
A
HEM
185
B
NB
HEM
1_555
91.6
A
HEM
185
B
NA
HEM
1_555
A
HEM
185
B
FE
HEM
1_555
A
HEM
185
B
NB
HEM
1_555
90.3
A
HIS
59
A
NE2
HIS
59
1_555
A
HEM
185
B
FE
HEM
1_555
A
HEM
185
B
NC
HEM
1_555
88.3
A
HEM
185
B
NA
HEM
1_555
A
HEM
185
B
FE
HEM
1_555
A
HEM
185
B
NC
HEM
1_555
176.3
A
HEM
185
B
NB
HEM
1_555
A
HEM
185
B
FE
HEM
1_555
A
HEM
185
B
NC
HEM
1_555
89.6
A
HIS
59
A
NE2
HIS
59
1_555
A
HEM
185
B
FE
HEM
1_555
A
HEM
185
B
ND
HEM
1_555
89.1
A
HEM
185
B
NA
HEM
1_555
A
HEM
185
B
FE
HEM
1_555
A
HEM
185
B
ND
HEM
1_555
90.1
A
HEM
185
B
NB
HEM
1_555
A
HEM
185
B
FE
HEM
1_555
A
HEM
185
B
ND
HEM
1_555
179.2
A
HEM
185
B
NC
HEM
1_555
A
HEM
185
B
FE
HEM
1_555
A
HEM
185
B
ND
HEM
1_555
90.0
A
HIS
59
A
NE2
HIS
59
1_555
A
HEM
185
B
FE
HEM
1_555
A
IMD
190
C
N1
IMD
1_555
178.5
A
HEM
185
B
NA
HEM
1_555
A
HEM
185
B
FE
HEM
1_555
A
IMD
190
C
N1
IMD
1_555
93.4
A
HEM
185
B
NB
HEM
1_555
A
HEM
185
B
FE
HEM
1_555
A
IMD
190
C
N1
IMD
1_555
89.0
A
HEM
185
B
NC
HEM
1_555
A
HEM
185
B
FE
HEM
1_555
A
IMD
190
C
N1
IMD
1_555
90.3
A
HEM
185
B
ND
HEM
1_555
A
HEM
185
B
FE
HEM
1_555
A
IMD
190
C
N1
IMD
1_555
90.3
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
25
A
N
VAL
25
A
O
ALA
42
A
O
ALA
42
A
N
ALA
49
A
N
ALA
49
A
O
LYS
52
A
O
LYS
52
A
N
HIS
59
A
N
HIS
59
A
O
PHE
68
A
O
PHE
68
A
N
GLU
77
A
N
GLU
77
A
O
LYS
81
A
O
LYS
81
A
N
PHE
86
A
N
PHE
86
A
O
ASN
103
A
O
ASN
103
A
O
TYR
111
A
O
TYR
111
A
N
LEU
118
A
N
LEU
118
A
N
THR
121
A
N
THR
121
A
O
LEU
133
A
O
LEU
133
A
O
ASN
138
A
O
ASN
138
A
N
TYR
24
A
N
TYR
24
A
O
TYR
28
A
O
TYR
28
A
N
ILE
164
A
N
ILE
164
A
O
LYS
88
A
O
LYS
88
A
N
LYS
96
A
N
LYS
96
1
A
HOH
282
D
HOH
1
A
HOH
358
D
HOH
1
A
HOH
414
D
HOH
1
16.89
1.40
123.60
140.49
A
A
A
CD
NE
CZ
ARG
ARG
ARG
39
39
39
N
1
3.41
0.50
120.30
123.71
A
A
A
NE
CZ
NH1
ARG
ARG
ARG
39
39
39
N
1
7.46
1.10
114.20
121.66
A
A
A
CA
CB
SG
CYS
CYS
CYS
41
41
41
A
A
A
N
1
-14.55
1.70
111.00
96.45
A
A
A
CB
CG
CD2
LEU
LEU
LEU
44
44
44
B
N
1
8.39
0.60
121.00
129.39
A
A
A
CB
CG
CD2
TYR
TYR
TYR
111
111
111
A
A
N
1
-4.54
0.60
121.00
116.46
A
A
A
CB
CG
CD1
TYR
TYR
TYR
111
111
111
A
A
N
1
15.22
2.20
113.40
128.62
A
A
A
CA
CB
CG
ASN
ASN
ASN
127
127
127
A
A
A
N
1
-17.19
1.80
110.60
93.41
A
A
A
N
CA
CB
ASP
ASP
ASP
129
129
129
A
A
A
N
1
16.56
1.90
123.30
139.86
A
A
A
OD1
CG
OD2
ASP
ASP
ASP
129
129
129
A
A
A
N
1
-10.60
0.90
118.30
107.70
A
A
A
CB
CG
OD1
ASP
ASP
ASP
129
129
129
A
A
A
N
1
-5.86
0.90
118.30
112.44
A
A
A
CB
CG
OD2
ASP
ASP
ASP
129
129
129
A
A
A
N
1
5.72
0.90
118.30
124.02
A
A
A
CB
CG
OD1
ASP
ASP
ASP
132
132
132
N
1
-9.77
1.60
122.70
112.93
A
A
A
O
C
N
THR
THR
LYS
166
166
167
Y
1
18.89
2.50
121.70
140.59
A
A
A
C
N
CA
THR
LYS
LYS
166
167
167
Y
1
A
PHE
18
-91.33
59.59
1
A
ASP
129
B
50.49
90.42
1
A
LEU
130
A
-109.45
45.51
conjugate gradient refinement with SHELX, all
atoms refined with anisotropic thermal
parameters, hydrogen atoms added at calculated
positions.
Block-diagonal matrix refinement of the heme and iron coordination
sphere without restraints.
0.173
0.127
0.127
0.127
1.27
22.0
16345
2012
40637
39432
19521
5
96.0
RANDOM
1
Anisotropic temperature factors for all non-hydrogen atoms
0.000
0.
pdb entry 1IKH
ENGH & HUBER
16
1.27
22.0
276
1829
50
0
1503
0.011
0.032
9.1
1.220
22.000
1IKJ
40637
37957
0.
0.000
0.032
1
14.0
2.400
96.0
0.065
1.27
1.30
9.2
1.40
79.0
data scaling
d*TREK
data reduction
d*TREK
refinement
SHELXL-97
1.27 A CRYSTAL STRUCTURE OF NITROPHORIN 4 FROM RHODNIUS PROLIXUS COMPLEXED WITH IMIDAZOLE
1
N
N
2
N
N
3
N
N
4
N
N
A
ASN
13
A
ASN
13
HELX_P
A
PHE
18
A
PHE
18
1
1
6
A
GLU
32
A
GLU
32
HELX_P
A
VAL
36
A
VAL
36
5
2
5
A
GLY
146
A
GLY
146
HELX_P
A
ALA
156
A
ALA
156
1
3
11
A
GLU
159
A
GLU
159
HELX_P
A
PHE
163
A
PHE
163
5
4
5
A
ASP
174
A
ASP
174
HELX_P
A
LEU
182
A
LEU
182
1
5
9
disulf
2.013
A
CYS
2
A
SG
CYS
2
1_555
A
CYS
122
A
SG
CYS
122
1_555
disulf
2.042
A
A
A
CYS
41
A
SG
CYS
41
1_555
A
CYS
171
A
SG
CYS
171
1_555
disulf
1.996
B
B
A
CYS
41
A
SG
CYS
41
1_555
A
CYS
171
A
SG
CYS
171
1_555
metalc
1.951
A
HIS
59
A
NE2
HIS
59
1_555
A
HEM
185
B
FE
HEM
1_555
metalc
2.021
A
HEM
185
B
FE
HEM
1_555
A
IMD
190
C
N1
IMD
1_555
TRANSPORT PROTEIN
NITRIC OXIDE TRANSPORT, FERRIC HEME, ANTIHISTAMINE, VASODILATOR, LIPOCALIN, BILAN BINDING PROTEIN, TRANSPORT PROTEIN
NP4_RHOPR
UNP
1
22
Q94734
ACTKNAIAQTGFNKDKYFNGDVWYVTDYLDLEPDDVPKRYCAALAAGTASGKLKEALYHYDPKTQDTFYDVSELQVESLG
KYTANFKKVDKNGNVKVAVTAGNYYTFTVMYADDSSALIHTCLHKGNKDLGDLYAVLNRNKDAAAGDKVKSAVSAATLEF
SKFISTKENNCAYDNDSLKSLLTK
22
205
1IKJ
1
184
Q94734
A
1
1
184
12
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
A
ASN
19
A
ASN
19
A
ASP
30
A
ASP
30
A
CYS
41
A
CYS
41
A
ALA
49
A
ALA
49
A
LYS
52
A
LYS
52
A
TYR
60
A
TYR
60
A
THR
67
A
THR
67
A
SER
78
A
SER
78
A
LYS
81
A
LYS
81
A
VAL
89
A
VAL
89
A
ASN
103
A
ASN
103
A
ALA
112
A
ALA
112
A
SER
116
A
SER
116
A
LYS
125
A
LYS
125
A
LEU
133
A
LEU
133
A
ASN
138
A
ASN
138
A
ASN
19
A
ASN
19
A
ASP
30
A
ASP
30
A
ILE
164
A
ILE
164
A
SER
165
A
SER
165
A
LYS
81
A
LYS
81
A
VAL
89
A
VAL
89
A
VAL
95
A
VAL
95
A
VAL
97
A
VAL
97
BINDING SITE FOR RESIDUE HEM A 185
A
HEM
185
Software
20
BINDING SITE FOR RESIDUE IMD A 190
A
IMD
190
Software
6
A
VAL
25
A
VAL
25
20
1_555
A
TYR
28
A
TYR
28
20
1_555
A
VAL
36
A
VAL
36
20
1_555
A
PRO
37
A
PRO
37
20
1_555
A
TYR
40
A
TYR
40
20
1_555
A
LEU
44
A
LEU
44
20
1_555
A
LEU
57
A
LEU
57
20
1_555
A
HIS
59
A
HIS
59
20
1_555
A
ASP
70
A
ASP
70
20
1_555
A
PHE
86
A
PHE
86
20
1_555
A
LYS
88
A
LYS
88
20
1_555
A
TYR
105
A
TYR
105
20
1_555
A
PHE
107
A
PHE
107
20
1_555
A
LEU
123
A
LEU
123
20
1_555
A
LYS
125
A
LYS
125
20
1_555
A
LYS
128
A
LYS
128
20
1_555
A
LEU
133
A
LEU
133
20
1_555
A
IMD
190
C
IMD
20
1_555
A
HOH
300
D
HOH
20
1_555
A
HOH
454
D
HOH
20
1_555
A
VAL
36
A
VAL
36
6
1_555
A
LEU
123
A
LEU
123
6
1_555
A
LEU
130
A
LEU
130
6
1_555
A
LEU
133
A
LEU
133
6
1_555
A
HEM
185
B
HEM
6
1_555
A
HOH
236
D
HOH
6
1_555
5
C 1 2 1