1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
0000-0001-6653-6682
Herzik Jr., M.A.
0000-0002-2248-9383
Wu, M.
0000-0003-4921-1135
Lander, G.C.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
1
90.00
90.00
90.00
1.0
1.0
1.0
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
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
N
N
234
S
C
N
235
N
C
N
236
N
O
N
237
N
C
N
238
N
C
N
239
N
C
N
240
N
C
N
241
N
O
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
H
N
251
N
H
N
252
N
H
N
253
N
H
N
254
N
H
N
255
N
N
N
256
S
C
N
257
N
C
N
258
N
O
N
259
N
C
N
260
N
C
N
261
N
C
N
262
N
C
N
263
N
N
N
264
N
O
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
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
S
N
287
N
C
N
288
N
O
N
289
N
H
N
290
N
H
N
291
N
H
N
292
N
H
N
293
N
H
N
294
N
H
N
295
N
H
N
296
N
H
N
297
N
H
N
298
N
H
N
299
N
H
N
300
N
N
N
301
S
C
N
302
N
C
N
303
N
O
N
304
N
C
Y
305
N
C
Y
306
N
C
Y
307
N
C
Y
308
N
C
Y
309
N
C
Y
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
H
N
322
N
H
N
323
N
N
N
324
S
C
N
325
N
C
N
326
N
O
N
327
N
C
N
328
N
C
N
329
N
C
N
330
N
O
N
331
N
H
N
332
N
H
N
333
N
H
N
334
N
H
N
335
N
H
N
336
N
H
N
337
N
H
N
338
N
H
N
339
N
H
N
340
N
N
N
341
S
C
N
342
N
C
N
343
N
O
N
344
N
C
N
345
N
O
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
N
N
355
S
C
N
356
N
C
N
357
N
O
N
358
R
C
N
359
N
O
N
360
N
C
N
361
N
O
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
N
N
372
S
C
N
373
N
C
N
374
N
O
N
375
N
C
Y
376
N
C
Y
377
N
C
Y
378
N
C
Y
379
N
N
Y
380
N
C
Y
381
N
C
Y
382
N
C
Y
383
N
C
Y
384
N
C
N
385
N
O
N
386
N
H
N
387
N
H
N
388
N
H
N
389
N
H
N
390
N
H
N
391
N
H
N
392
N
H
N
393
N
H
N
394
N
H
N
395
N
H
N
396
N
H
N
397
N
H
N
398
N
N
N
399
S
C
N
400
N
C
N
401
N
O
N
402
N
C
Y
403
N
C
Y
404
N
C
Y
405
N
C
Y
406
N
C
Y
407
N
C
Y
408
N
C
N
409
N
O
N
410
N
O
N
411
N
H
N
412
N
H
N
413
N
H
N
414
N
H
N
415
N
H
N
416
N
H
N
417
N
H
N
418
N
H
N
419
N
H
N
420
N
H
N
421
N
H
N
422
N
N
N
423
S
C
N
424
N
C
N
425
N
O
N
426
N
C
N
427
N
C
N
428
N
C
N
429
N
O
N
430
N
H
N
431
N
H
N
432
N
H
N
433
N
H
N
434
N
H
N
435
N
H
N
436
N
H
N
437
N
H
N
438
N
H
N
439
N
H
N
440
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
doub
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
sing
N
256
N
sing
N
257
N
sing
N
258
N
sing
N
259
N
doub
N
260
N
sing
N
261
N
sing
N
262
N
sing
N
263
N
sing
N
264
N
sing
N
265
N
sing
N
266
N
sing
N
267
N
sing
N
268
N
sing
N
269
N
sing
N
270
N
sing
N
271
N
sing
N
272
N
sing
N
273
N
sing
N
274
N
sing
N
275
N
sing
N
276
N
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
sing
N
297
N
sing
N
298
N
sing
N
299
N
sing
N
300
N
sing
N
301
N
sing
N
302
N
doub
N
303
N
sing
N
304
N
sing
N
305
N
sing
N
306
N
sing
Y
307
N
doub
Y
308
N
sing
Y
309
N
sing
N
310
N
sing
Y
311
N
doub
N
312
N
sing
Y
313
N
doub
N
314
N
sing
Y
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
sing
N
325
N
doub
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
sing
N
336
N
sing
N
337
N
sing
N
338
N
sing
N
339
N
sing
N
340
N
sing
N
341
N
sing
N
342
N
doub
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
sing
N
353
N
sing
N
354
N
sing
N
355
N
doub
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
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
doub
N
372
N
sing
N
373
N
sing
N
374
N
sing
N
375
N
sing
Y
376
N
doub
Y
377
N
sing
Y
378
N
sing
N
379
N
sing
Y
380
N
doub
Y
381
N
sing
Y
382
N
sing
N
383
N
sing
Y
384
N
sing
Y
385
N
doub
N
386
N
sing
Y
387
N
doub
N
388
N
sing
Y
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
doub
N
400
N
sing
N
401
N
sing
N
402
N
sing
N
403
N
sing
Y
404
N
doub
Y
405
N
sing
Y
406
N
sing
N
407
N
sing
Y
408
N
doub
N
409
N
sing
Y
410
N
doub
N
411
N
sing
Y
412
N
sing
N
413
N
sing
N
414
N
sing
N
415
N
sing
N
416
N
sing
N
417
N
sing
N
418
N
sing
N
419
N
sing
N
420
N
sing
N
421
N
sing
N
422
N
sing
N
423
N
doub
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
sing
N
433
N
sing
N
434
N
sing
UK
Nat Commun
2041-1723
10
1032
1032
10.1038/s41467-019-08991-8
30833564
High-resolution structure determination of sub-100 kDa complexes using conventional cryo-EM.
2019
0000-0001-6653-6682
0000-0003-4921-1135
10.2210/pdb6nbc/pdb
pdb_00006nbc
67
FLEXIBLE FIT
REAL
4N7P
1
A
4N7P
PDB
experimental model
6NBC
24308
2.8
FSC 0.143 CUT-OFF
POINT
7.5
10
mM
Na2HPO4
Phosphate
137
mM
NaCl
Sodium chloride
2.7
mM
KCL
Potassium Chloride
2
mM
KH2PO4
Potassium Phosphate
1
PHASE FLIPPING AND AMPLITUDE CORRECTION
Lyophilized human methemoglobin purchased from Sigma Aldrich
1, 2
methemoglobin from human
0
NATURAL
COMPLEX
NO
MEGADALTONS
0.064
9606
Homo sapiens
PARTICLE
1
1
SINGLE PARTICLE
Counting mode, 250 ms frames, exposure rate of ~1.95 e- pixel-1 s-1, total exposure of ~69 e- angstrom-2 (1.57 e- angstrom-2 frame-1).
11
69
COUNTING
GATAN K2 SUMMIT (4k x 4k)
2
1673
3838
3710
6NBC
44
5
1-44
200
COMA FREE
70
NITROGEN
FIELD EMISSION GUN
FLOOD BEAM
FEI TALOS ARCTICA
BRIGHT FIELD
2.7
16000
5000
73000
FEI TITAN KRIOS AUTOGRID HOLDER
1
Difference-of-Gaussian-picked.
1232543
Grids were plasma cleaned using a Solarus plasma cleaner (Gatan, Inc.).
GOLD
300
Quantifoil, UltrAuFoil, R1.2/1.3
6NBC
C2
PARTICLE SELECTION
1
RELION
2.1
IMAGE ACQUISITION
1
Leginon
3.2
MASKING
CTF CORRECTION
1
CTFFIND
4
LAYERLINE INDEXING
DIFFRACTION INDEXING
MODEL FITTING
1
UCSF Chimera
1.11.2
OTHER
INITIAL EULER ASSIGNMENT
1
RELION
2.1
FINAL EULER ASSIGNMENT
1
RELION
2.1
CLASSIFICATION
1
RELION
2.1
RECONSTRUCTION
1
RELION
2.1
MODEL REFINEMENT
1
PHENIX
1.11.1_2580
12
Lyophilized human methemoglobin (Sigma Aldrich) was solubilized.
NO
NO
NO
YES
277.15
ETHANE
Sample was manually blotted for 4-5 seconds using Whatman No. 1 filter paper immediately prior to plunge-freezing.
6NBC
90
HOMEMADE PLUNGER
14993.159
Hemoglobin subunit alpha
2
nat
polymer
15459.697
Hemoglobin subunit beta
2
nat
polymer
616.487
PROTOPORPHYRIN IX CONTAINING FE
4
syn
non-polymer
Alpha-globin,Hemoglobin alpha chain
Beta-globin,Hemoglobin beta chain
no
no
VLSPADKTNVKAAWGKVGAHAGEYGAEALERMFLSFPTTKTYFPHFDLSHGSAQVKGHGKKVADALTNAVAHVDDMPNAL
SALSDLHAHKLRVDPVNFKLLSHCLLVTLAAHLPAEFTPAVHASLDKFLASVSTVLTSKY
VLSPADKTNVKAAWGKVGAHAGEYGAEALERMFLSFPTTKTYFPHFDLSHGSAQVKGHGKKVADALTNAVAHVDDMPNAL
SALSDLHAHKLRVDPVNFKLLSHCLLVTLAAHLPAEFTPAVHASLDKFLASVSTVLTSKY
A,C
polypeptide(L)
no
no
VHLTPEEKSAVTALWGKVNVDEVGGEALGRLLVVYPWTQRFFESFGDLSTPDAVMGNPKVKAHGKKVLGAFSDGLAHLDN
LKGTFATLSELHCDKLHVDPENFRLLGNVLVCVLAHHFGKEFTPPVQAAYQKVVAGVANALAH
VHLTPEEKSAVTALWGKVNVDEVGGEALGRLLVVYPWTQRFFESFGDLSTPDAVMGNPKVKAHGKKVLGAFSDGLAHLDN
LKGTFATLSELHCDKLHVDPENFRLLGNVLVCVLAHHFGKEFTPPVQAAYQKVVAGVANALAH
B,D
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
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
Human
sample
1
140
9606
Homo sapiens
Obtained in lyophilized form from Sigma Aldrich
Human
sample
1
143
9606
Homo sapiens
Obtained in lyophilized form from Sigma Aldrich
citation
citation_author
atom_sites
pdbx_audit_support
chem_comp_atom
chem_comp_bond
database_2
em_3d_fitting_list
pdbx_initial_refinement_model
repository
Initial release
Data collection
Database references
Author supporting evidence
Other
Data collection
Database references
Refinement description
1
0
2019-03-13
1
1
2019-03-20
1
2
2019-12-18
1
3
2024-03-20
_citation.country
_citation.journal_abbrev
_citation.journal_id_CSD
_citation.journal_id_ISSN
_citation.journal_volume
_citation.page_first
_citation.page_last
_citation.pdbx_database_id_DOI
_citation.pdbx_database_id_PubMed
_citation.title
_citation.year
_citation_author.identifier_ORCID
_atom_sites.fract_transf_matrix[1][1]
_atom_sites.fract_transf_matrix[2][2]
_atom_sites.fract_transf_matrix[3][3]
_pdbx_audit_support.funding_organization
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_em_3d_fitting_list.accession_code
_em_3d_fitting_list.initial_refinement_model_id
_em_3d_fitting_list.source_name
_em_3d_fitting_list.type
United States
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)
DP2EB020402
human methemoglobin state 1 determined using single-particle cryo-EM at 200 keV
N
RCSB
Y
RCSB
2018-12-06
REL
HEM
PROTOPORPHYRIN IX CONTAINING FE
4N7P
PDB
experimental model
HEM
201
3
HEM
HEM
201
A
HEM
201
3
HEM
HEM
201
B
HEM
201
3
HEM
HEM
201
C
HEM
201
3
HEM
HEM
201
D
VAL
1
n
1
VAL
1
A
LEU
2
n
2
LEU
2
A
SER
3
n
3
SER
3
A
PRO
4
n
4
PRO
4
A
ALA
5
n
5
ALA
5
A
ASP
6
n
6
ASP
6
A
LYS
7
n
7
LYS
7
A
THR
8
n
8
THR
8
A
ASN
9
n
9
ASN
9
A
VAL
10
n
10
VAL
10
A
LYS
11
n
11
LYS
11
A
ALA
12
n
12
ALA
12
A
ALA
13
n
13
ALA
13
A
TRP
14
n
14
TRP
14
A
GLY
15
n
15
GLY
15
A
LYS
16
n
16
LYS
16
A
VAL
17
n
17
VAL
17
A
GLY
18
n
18
GLY
18
A
ALA
19
n
19
ALA
19
A
HIS
20
n
20
HIS
20
A
ALA
21
n
21
ALA
21
A
GLY
22
n
22
GLY
22
A
GLU
23
n
23
GLU
23
A
TYR
24
n
24
TYR
24
A
GLY
25
n
25
GLY
25
A
ALA
26
n
26
ALA
26
A
GLU
27
n
27
GLU
27
A
ALA
28
n
28
ALA
28
A
LEU
29
n
29
LEU
29
A
GLU
30
n
30
GLU
30
A
ARG
31
n
31
ARG
31
A
MET
32
n
32
MET
32
A
PHE
33
n
33
PHE
33
A
LEU
34
n
34
LEU
34
A
SER
35
n
35
SER
35
A
PHE
36
n
36
PHE
36
A
PRO
37
n
37
PRO
37
A
THR
38
n
38
THR
38
A
THR
39
n
39
THR
39
A
LYS
40
n
40
LYS
40
A
THR
41
n
41
THR
41
A
TYR
42
n
42
TYR
42
A
PHE
43
n
43
PHE
43
A
PRO
44
n
44
PRO
44
A
HIS
45
n
45
HIS
45
A
PHE
46
n
46
PHE
46
A
ASP
47
n
47
ASP
47
A
LEU
48
n
48
LEU
48
A
SER
49
n
49
SER
49
A
HIS
50
n
50
HIS
50
A
GLY
51
n
51
GLY
51
A
SER
52
n
52
SER
52
A
ALA
53
n
53
ALA
53
A
GLN
54
n
54
GLN
54
A
VAL
55
n
55
VAL
55
A
LYS
56
n
56
LYS
56
A
GLY
57
n
57
GLY
57
A
HIS
58
n
58
HIS
58
A
GLY
59
n
59
GLY
59
A
LYS
60
n
60
LYS
60
A
LYS
61
n
61
LYS
61
A
VAL
62
n
62
VAL
62
A
ALA
63
n
63
ALA
63
A
ASP
64
n
64
ASP
64
A
ALA
65
n
65
ALA
65
A
LEU
66
n
66
LEU
66
A
THR
67
n
67
THR
67
A
ASN
68
n
68
ASN
68
A
ALA
69
n
69
ALA
69
A
VAL
70
n
70
VAL
70
A
ALA
71
n
71
ALA
71
A
HIS
72
n
72
HIS
72
A
VAL
73
n
73
VAL
73
A
ASP
74
n
74
ASP
74
A
ASP
75
n
75
ASP
75
A
MET
76
n
76
MET
76
A
PRO
77
n
77
PRO
77
A
ASN
78
n
78
ASN
78
A
ALA
79
n
79
ALA
79
A
LEU
80
n
80
LEU
80
A
SER
81
n
81
SER
81
A
ALA
82
n
82
ALA
82
A
LEU
83
n
83
LEU
83
A
SER
84
n
84
SER
84
A
ASP
85
n
85
ASP
85
A
LEU
86
n
86
LEU
86
A
HIS
87
n
87
HIS
87
A
ALA
88
n
88
ALA
88
A
HIS
89
n
89
HIS
89
A
LYS
90
n
90
LYS
90
A
LEU
91
n
91
LEU
91
A
ARG
92
n
92
ARG
92
A
VAL
93
n
93
VAL
93
A
ASP
94
n
94
ASP
94
A
PRO
95
n
95
PRO
95
A
VAL
96
n
96
VAL
96
A
ASN
97
n
97
ASN
97
A
PHE
98
n
98
PHE
98
A
LYS
99
n
99
LYS
99
A
LEU
100
n
100
LEU
100
A
LEU
101
n
101
LEU
101
A
SER
102
n
102
SER
102
A
HIS
103
n
103
HIS
103
A
CYS
104
n
104
CYS
104
A
LEU
105
n
105
LEU
105
A
LEU
106
n
106
LEU
106
A
VAL
107
n
107
VAL
107
A
THR
108
n
108
THR
108
A
LEU
109
n
109
LEU
109
A
ALA
110
n
110
ALA
110
A
ALA
111
n
111
ALA
111
A
HIS
112
n
112
HIS
112
A
LEU
113
n
113
LEU
113
A
PRO
114
n
114
PRO
114
A
ALA
115
n
115
ALA
115
A
GLU
116
n
116
GLU
116
A
PHE
117
n
117
PHE
117
A
THR
118
n
118
THR
118
A
PRO
119
n
119
PRO
119
A
ALA
120
n
120
ALA
120
A
VAL
121
n
121
VAL
121
A
HIS
122
n
122
HIS
122
A
ALA
123
n
123
ALA
123
A
SER
124
n
124
SER
124
A
LEU
125
n
125
LEU
125
A
ASP
126
n
126
ASP
126
A
LYS
127
n
127
LYS
127
A
PHE
128
n
128
PHE
128
A
LEU
129
n
129
LEU
129
A
ALA
130
n
130
ALA
130
A
SER
131
n
131
SER
131
A
VAL
132
n
132
VAL
132
A
SER
133
n
133
SER
133
A
THR
134
n
134
THR
134
A
VAL
135
n
135
VAL
135
A
LEU
136
n
136
LEU
136
A
THR
137
n
137
THR
137
A
SER
138
n
138
SER
138
A
LYS
139
n
139
LYS
139
A
TYR
140
n
140
TYR
140
A
VAL
1
n
1
VAL
1
B
HIS
2
n
2
HIS
2
B
LEU
3
n
3
LEU
3
B
THR
4
n
4
THR
4
B
PRO
5
n
5
PRO
5
B
GLU
6
n
6
GLU
6
B
GLU
7
n
7
GLU
7
B
LYS
8
n
8
LYS
8
B
SER
9
n
9
SER
9
B
ALA
10
n
10
ALA
10
B
VAL
11
n
11
VAL
11
B
THR
12
n
12
THR
12
B
ALA
13
n
13
ALA
13
B
LEU
14
n
14
LEU
14
B
TRP
15
n
15
TRP
15
B
GLY
16
n
16
GLY
16
B
LYS
17
n
17
LYS
17
B
VAL
18
n
18
VAL
18
B
ASN
19
n
19
ASN
19
B
VAL
20
n
20
VAL
20
B
ASP
21
n
21
ASP
21
B
GLU
22
n
22
GLU
22
B
VAL
23
n
23
VAL
23
B
GLY
24
n
24
GLY
24
B
GLY
25
n
25
GLY
25
B
GLU
26
n
26
GLU
26
B
ALA
27
n
27
ALA
27
B
LEU
28
n
28
LEU
28
B
GLY
29
n
29
GLY
29
B
ARG
30
n
30
ARG
30
B
LEU
31
n
31
LEU
31
B
LEU
32
n
32
LEU
32
B
VAL
33
n
33
VAL
33
B
VAL
34
n
34
VAL
34
B
TYR
35
n
35
TYR
35
B
PRO
36
n
36
PRO
36
B
TRP
37
n
37
TRP
37
B
THR
38
n
38
THR
38
B
GLN
39
n
39
GLN
39
B
ARG
40
n
40
ARG
40
B
PHE
41
n
41
PHE
41
B
PHE
42
n
42
PHE
42
B
GLU
43
n
43
GLU
43
B
SER
44
n
44
SER
44
B
PHE
45
n
45
PHE
45
B
GLY
46
n
46
GLY
46
B
ASP
47
n
47
ASP
47
B
LEU
48
n
48
LEU
48
B
SER
49
n
49
SER
49
B
THR
50
n
50
THR
50
B
PRO
51
n
51
PRO
51
B
ASP
52
n
52
ASP
52
B
ALA
53
n
53
ALA
53
B
VAL
54
n
54
VAL
54
B
MET
55
n
55
MET
55
B
GLY
56
n
56
GLY
56
B
ASN
57
n
57
ASN
57
B
PRO
58
n
58
PRO
58
B
LYS
59
n
59
LYS
59
B
VAL
60
n
60
VAL
60
B
LYS
61
n
61
LYS
61
B
ALA
62
n
62
ALA
62
B
HIS
63
n
63
HIS
63
B
GLY
64
n
64
GLY
64
B
LYS
65
n
65
LYS
65
B
LYS
66
n
66
LYS
66
B
VAL
67
n
67
VAL
67
B
LEU
68
n
68
LEU
68
B
GLY
69
n
69
GLY
69
B
ALA
70
n
70
ALA
70
B
PHE
71
n
71
PHE
71
B
SER
72
n
72
SER
72
B
ASP
73
n
73
ASP
73
B
GLY
74
n
74
GLY
74
B
LEU
75
n
75
LEU
75
B
ALA
76
n
76
ALA
76
B
HIS
77
n
77
HIS
77
B
LEU
78
n
78
LEU
78
B
ASP
79
n
79
ASP
79
B
ASN
80
n
80
ASN
80
B
LEU
81
n
81
LEU
81
B
LYS
82
n
82
LYS
82
B
GLY
83
n
83
GLY
83
B
THR
84
n
84
THR
84
B
PHE
85
n
85
PHE
85
B
ALA
86
n
86
ALA
86
B
THR
87
n
87
THR
87
B
LEU
88
n
88
LEU
88
B
SER
89
n
89
SER
89
B
GLU
90
n
90
GLU
90
B
LEU
91
n
91
LEU
91
B
HIS
92
n
92
HIS
92
B
CYS
93
n
93
CYS
93
B
ASP
94
n
94
ASP
94
B
LYS
95
n
95
LYS
95
B
LEU
96
n
96
LEU
96
B
HIS
97
n
97
HIS
97
B
VAL
98
n
98
VAL
98
B
ASP
99
n
99
ASP
99
B
PRO
100
n
100
PRO
100
B
GLU
101
n
101
GLU
101
B
ASN
102
n
102
ASN
102
B
PHE
103
n
103
PHE
103
B
ARG
104
n
104
ARG
104
B
LEU
105
n
105
LEU
105
B
LEU
106
n
106
LEU
106
B
GLY
107
n
107
GLY
107
B
ASN
108
n
108
ASN
108
B
VAL
109
n
109
VAL
109
B
LEU
110
n
110
LEU
110
B
VAL
111
n
111
VAL
111
B
CYS
112
n
112
CYS
112
B
VAL
113
n
113
VAL
113
B
LEU
114
n
114
LEU
114
B
ALA
115
n
115
ALA
115
B
HIS
116
n
116
HIS
116
B
HIS
117
n
117
HIS
117
B
PHE
118
n
118
PHE
118
B
GLY
119
n
119
GLY
119
B
LYS
120
n
120
LYS
120
B
GLU
121
n
121
GLU
121
B
PHE
122
n
122
PHE
122
B
THR
123
n
123
THR
123
B
PRO
124
n
124
PRO
124
B
PRO
125
n
125
PRO
125
B
VAL
126
n
126
VAL
126
B
GLN
127
n
127
GLN
127
B
ALA
128
n
128
ALA
128
B
ALA
129
n
129
ALA
129
B
TYR
130
n
130
TYR
130
B
GLN
131
n
131
GLN
131
B
LYS
132
n
132
LYS
132
B
VAL
133
n
133
VAL
133
B
VAL
134
n
134
VAL
134
B
ALA
135
n
135
ALA
135
B
GLY
136
n
136
GLY
136
B
VAL
137
n
137
VAL
137
B
ALA
138
n
138
ALA
138
B
ASN
139
n
139
ASN
139
B
ALA
140
n
140
ALA
140
B
LEU
141
n
141
LEU
141
B
ALA
142
n
142
ALA
142
B
HIS
143
n
143
HIS
143
B
VAL
1
n
1
VAL
1
C
LEU
2
n
2
LEU
2
C
SER
3
n
3
SER
3
C
PRO
4
n
4
PRO
4
C
ALA
5
n
5
ALA
5
C
ASP
6
n
6
ASP
6
C
LYS
7
n
7
LYS
7
C
THR
8
n
8
THR
8
C
ASN
9
n
9
ASN
9
C
VAL
10
n
10
VAL
10
C
LYS
11
n
11
LYS
11
C
ALA
12
n
12
ALA
12
C
ALA
13
n
13
ALA
13
C
TRP
14
n
14
TRP
14
C
GLY
15
n
15
GLY
15
C
LYS
16
n
16
LYS
16
C
VAL
17
n
17
VAL
17
C
GLY
18
n
18
GLY
18
C
ALA
19
n
19
ALA
19
C
HIS
20
n
20
HIS
20
C
ALA
21
n
21
ALA
21
C
GLY
22
n
22
GLY
22
C
GLU
23
n
23
GLU
23
C
TYR
24
n
24
TYR
24
C
GLY
25
n
25
GLY
25
C
ALA
26
n
26
ALA
26
C
GLU
27
n
27
GLU
27
C
ALA
28
n
28
ALA
28
C
LEU
29
n
29
LEU
29
C
GLU
30
n
30
GLU
30
C
ARG
31
n
31
ARG
31
C
MET
32
n
32
MET
32
C
PHE
33
n
33
PHE
33
C
LEU
34
n
34
LEU
34
C
SER
35
n
35
SER
35
C
PHE
36
n
36
PHE
36
C
PRO
37
n
37
PRO
37
C
THR
38
n
38
THR
38
C
THR
39
n
39
THR
39
C
LYS
40
n
40
LYS
40
C
THR
41
n
41
THR
41
C
TYR
42
n
42
TYR
42
C
PHE
43
n
43
PHE
43
C
PRO
44
n
44
PRO
44
C
HIS
45
n
45
HIS
45
C
PHE
46
n
46
PHE
46
C
ASP
47
n
47
ASP
47
C
LEU
48
n
48
LEU
48
C
SER
49
n
49
SER
49
C
HIS
50
n
50
HIS
50
C
GLY
51
n
51
GLY
51
C
SER
52
n
52
SER
52
C
ALA
53
n
53
ALA
53
C
GLN
54
n
54
GLN
54
C
VAL
55
n
55
VAL
55
C
LYS
56
n
56
LYS
56
C
GLY
57
n
57
GLY
57
C
HIS
58
n
58
HIS
58
C
GLY
59
n
59
GLY
59
C
LYS
60
n
60
LYS
60
C
LYS
61
n
61
LYS
61
C
VAL
62
n
62
VAL
62
C
ALA
63
n
63
ALA
63
C
ASP
64
n
64
ASP
64
C
ALA
65
n
65
ALA
65
C
LEU
66
n
66
LEU
66
C
THR
67
n
67
THR
67
C
ASN
68
n
68
ASN
68
C
ALA
69
n
69
ALA
69
C
VAL
70
n
70
VAL
70
C
ALA
71
n
71
ALA
71
C
HIS
72
n
72
HIS
72
C
VAL
73
n
73
VAL
73
C
ASP
74
n
74
ASP
74
C
ASP
75
n
75
ASP
75
C
MET
76
n
76
MET
76
C
PRO
77
n
77
PRO
77
C
ASN
78
n
78
ASN
78
C
ALA
79
n
79
ALA
79
C
LEU
80
n
80
LEU
80
C
SER
81
n
81
SER
81
C
ALA
82
n
82
ALA
82
C
LEU
83
n
83
LEU
83
C
SER
84
n
84
SER
84
C
ASP
85
n
85
ASP
85
C
LEU
86
n
86
LEU
86
C
HIS
87
n
87
HIS
87
C
ALA
88
n
88
ALA
88
C
HIS
89
n
89
HIS
89
C
LYS
90
n
90
LYS
90
C
LEU
91
n
91
LEU
91
C
ARG
92
n
92
ARG
92
C
VAL
93
n
93
VAL
93
C
ASP
94
n
94
ASP
94
C
PRO
95
n
95
PRO
95
C
VAL
96
n
96
VAL
96
C
ASN
97
n
97
ASN
97
C
PHE
98
n
98
PHE
98
C
LYS
99
n
99
LYS
99
C
LEU
100
n
100
LEU
100
C
LEU
101
n
101
LEU
101
C
SER
102
n
102
SER
102
C
HIS
103
n
103
HIS
103
C
CYS
104
n
104
CYS
104
C
LEU
105
n
105
LEU
105
C
LEU
106
n
106
LEU
106
C
VAL
107
n
107
VAL
107
C
THR
108
n
108
THR
108
C
LEU
109
n
109
LEU
109
C
ALA
110
n
110
ALA
110
C
ALA
111
n
111
ALA
111
C
HIS
112
n
112
HIS
112
C
LEU
113
n
113
LEU
113
C
PRO
114
n
114
PRO
114
C
ALA
115
n
115
ALA
115
C
GLU
116
n
116
GLU
116
C
PHE
117
n
117
PHE
117
C
THR
118
n
118
THR
118
C
PRO
119
n
119
PRO
119
C
ALA
120
n
120
ALA
120
C
VAL
121
n
121
VAL
121
C
HIS
122
n
122
HIS
122
C
ALA
123
n
123
ALA
123
C
SER
124
n
124
SER
124
C
LEU
125
n
125
LEU
125
C
ASP
126
n
126
ASP
126
C
LYS
127
n
127
LYS
127
C
PHE
128
n
128
PHE
128
C
LEU
129
n
129
LEU
129
C
ALA
130
n
130
ALA
130
C
SER
131
n
131
SER
131
C
VAL
132
n
132
VAL
132
C
SER
133
n
133
SER
133
C
THR
134
n
134
THR
134
C
VAL
135
n
135
VAL
135
C
LEU
136
n
136
LEU
136
C
THR
137
n
137
THR
137
C
SER
138
n
138
SER
138
C
LYS
139
n
139
LYS
139
C
TYR
140
n
140
TYR
140
C
VAL
1
n
1
VAL
1
D
HIS
2
n
2
HIS
2
D
LEU
3
n
3
LEU
3
D
THR
4
n
4
THR
4
D
PRO
5
n
5
PRO
5
D
GLU
6
n
6
GLU
6
D
GLU
7
n
7
GLU
7
D
LYS
8
n
8
LYS
8
D
SER
9
n
9
SER
9
D
ALA
10
n
10
ALA
10
D
VAL
11
n
11
VAL
11
D
THR
12
n
12
THR
12
D
ALA
13
n
13
ALA
13
D
LEU
14
n
14
LEU
14
D
TRP
15
n
15
TRP
15
D
GLY
16
n
16
GLY
16
D
LYS
17
n
17
LYS
17
D
VAL
18
n
18
VAL
18
D
ASN
19
n
19
ASN
19
D
VAL
20
n
20
VAL
20
D
ASP
21
n
21
ASP
21
D
GLU
22
n
22
GLU
22
D
VAL
23
n
23
VAL
23
D
GLY
24
n
24
GLY
24
D
GLY
25
n
25
GLY
25
D
GLU
26
n
26
GLU
26
D
ALA
27
n
27
ALA
27
D
LEU
28
n
28
LEU
28
D
GLY
29
n
29
GLY
29
D
ARG
30
n
30
ARG
30
D
LEU
31
n
31
LEU
31
D
LEU
32
n
32
LEU
32
D
VAL
33
n
33
VAL
33
D
VAL
34
n
34
VAL
34
D
TYR
35
n
35
TYR
35
D
PRO
36
n
36
PRO
36
D
TRP
37
n
37
TRP
37
D
THR
38
n
38
THR
38
D
GLN
39
n
39
GLN
39
D
ARG
40
n
40
ARG
40
D
PHE
41
n
41
PHE
41
D
PHE
42
n
42
PHE
42
D
GLU
43
n
43
GLU
43
D
SER
44
n
44
SER
44
D
PHE
45
n
45
PHE
45
D
GLY
46
n
46
GLY
46
D
ASP
47
n
47
ASP
47
D
LEU
48
n
48
LEU
48
D
SER
49
n
49
SER
49
D
THR
50
n
50
THR
50
D
PRO
51
n
51
PRO
51
D
ASP
52
n
52
ASP
52
D
ALA
53
n
53
ALA
53
D
VAL
54
n
54
VAL
54
D
MET
55
n
55
MET
55
D
GLY
56
n
56
GLY
56
D
ASN
57
n
57
ASN
57
D
PRO
58
n
58
PRO
58
D
LYS
59
n
59
LYS
59
D
VAL
60
n
60
VAL
60
D
LYS
61
n
61
LYS
61
D
ALA
62
n
62
ALA
62
D
HIS
63
n
63
HIS
63
D
GLY
64
n
64
GLY
64
D
LYS
65
n
65
LYS
65
D
LYS
66
n
66
LYS
66
D
VAL
67
n
67
VAL
67
D
LEU
68
n
68
LEU
68
D
GLY
69
n
69
GLY
69
D
ALA
70
n
70
ALA
70
D
PHE
71
n
71
PHE
71
D
SER
72
n
72
SER
72
D
ASP
73
n
73
ASP
73
D
GLY
74
n
74
GLY
74
D
LEU
75
n
75
LEU
75
D
ALA
76
n
76
ALA
76
D
HIS
77
n
77
HIS
77
D
LEU
78
n
78
LEU
78
D
ASP
79
n
79
ASP
79
D
ASN
80
n
80
ASN
80
D
LEU
81
n
81
LEU
81
D
LYS
82
n
82
LYS
82
D
GLY
83
n
83
GLY
83
D
THR
84
n
84
THR
84
D
PHE
85
n
85
PHE
85
D
ALA
86
n
86
ALA
86
D
THR
87
n
87
THR
87
D
LEU
88
n
88
LEU
88
D
SER
89
n
89
SER
89
D
GLU
90
n
90
GLU
90
D
LEU
91
n
91
LEU
91
D
HIS
92
n
92
HIS
92
D
CYS
93
n
93
CYS
93
D
ASP
94
n
94
ASP
94
D
LYS
95
n
95
LYS
95
D
LEU
96
n
96
LEU
96
D
HIS
97
n
97
HIS
97
D
VAL
98
n
98
VAL
98
D
ASP
99
n
99
ASP
99
D
PRO
100
n
100
PRO
100
D
GLU
101
n
101
GLU
101
D
ASN
102
n
102
ASN
102
D
PHE
103
n
103
PHE
103
D
ARG
104
n
104
ARG
104
D
LEU
105
n
105
LEU
105
D
LEU
106
n
106
LEU
106
D
GLY
107
n
107
GLY
107
D
ASN
108
n
108
ASN
108
D
VAL
109
n
109
VAL
109
D
LEU
110
n
110
LEU
110
D
VAL
111
n
111
VAL
111
D
CYS
112
n
112
CYS
112
D
VAL
113
n
113
VAL
113
D
LEU
114
n
114
LEU
114
D
ALA
115
n
115
ALA
115
D
HIS
116
n
116
HIS
116
D
HIS
117
n
117
HIS
117
D
PHE
118
n
118
PHE
118
D
GLY
119
n
119
GLY
119
D
LYS
120
n
120
LYS
120
D
GLU
121
n
121
GLU
121
D
PHE
122
n
122
PHE
122
D
THR
123
n
123
THR
123
D
PRO
124
n
124
PRO
124
D
PRO
125
n
125
PRO
125
D
VAL
126
n
126
VAL
126
D
GLN
127
n
127
GLN
127
D
ALA
128
n
128
ALA
128
D
ALA
129
n
129
ALA
129
D
TYR
130
n
130
TYR
130
D
GLN
131
n
131
GLN
131
D
LYS
132
n
132
LYS
132
D
VAL
133
n
133
VAL
133
D
VAL
134
n
134
VAL
134
D
ALA
135
n
135
ALA
135
D
GLY
136
n
136
GLY
136
D
VAL
137
n
137
VAL
137
D
ALA
138
n
138
ALA
138
D
ASN
139
n
139
ASN
139
D
ALA
140
n
140
ALA
140
D
LEU
141
n
141
LEU
141
D
ALA
142
n
142
ALA
142
D
HIS
143
n
143
HIS
143
D
author_defined_assembly
4
tetrameric
gel filtration
A
HIS
87
A
NE2
HIS
87
1_555
A
HEM
201
E
FE
HEM
1_555
A
HEM
201
E
NA
HEM
1_555
82.8
A
HIS
87
A
NE2
HIS
87
1_555
A
HEM
201
E
FE
HEM
1_555
A
HEM
201
E
NB
HEM
1_555
91.1
A
HEM
201
E
NA
HEM
1_555
A
HEM
201
E
FE
HEM
1_555
A
HEM
201
E
NB
HEM
1_555
90.2
A
HIS
87
A
NE2
HIS
87
1_555
A
HEM
201
E
FE
HEM
1_555
A
HEM
201
E
NC
HEM
1_555
92.6
A
HEM
201
E
NA
HEM
1_555
A
HEM
201
E
FE
HEM
1_555
A
HEM
201
E
NC
HEM
1_555
175.4
A
HEM
201
E
NB
HEM
1_555
A
HEM
201
E
FE
HEM
1_555
A
HEM
201
E
NC
HEM
1_555
90.6
A
HIS
87
A
NE2
HIS
87
1_555
A
HEM
201
E
FE
HEM
1_555
A
HEM
201
E
ND
HEM
1_555
87.9
A
HEM
201
E
NA
HEM
1_555
A
HEM
201
E
FE
HEM
1_555
A
HEM
201
E
ND
HEM
1_555
90.2
A
HEM
201
E
NB
HEM
1_555
A
HEM
201
E
FE
HEM
1_555
A
HEM
201
E
ND
HEM
1_555
179.0
A
HEM
201
E
NC
HEM
1_555
A
HEM
201
E
FE
HEM
1_555
A
HEM
201
E
ND
HEM
1_555
88.9
B
HIS
92
B
NE2
HIS
92
1_555
B
HEM
201
F
FE
HEM
1_555
B
HEM
201
F
NA
HEM
1_555
82.2
B
HIS
92
B
NE2
HIS
92
1_555
B
HEM
201
F
FE
HEM
1_555
B
HEM
201
F
NB
HEM
1_555
96.8
B
HEM
201
F
NA
HEM
1_555
B
HEM
201
F
FE
HEM
1_555
B
HEM
201
F
NB
HEM
1_555
90.0
B
HIS
92
B
NE2
HIS
92
1_555
B
HEM
201
F
FE
HEM
1_555
B
HEM
201
F
NC
HEM
1_555
93.7
B
HEM
201
F
NA
HEM
1_555
B
HEM
201
F
FE
HEM
1_555
B
HEM
201
F
NC
HEM
1_555
175.9
B
HEM
201
F
NB
HEM
1_555
B
HEM
201
F
FE
HEM
1_555
B
HEM
201
F
NC
HEM
1_555
90.4
B
HIS
92
B
NE2
HIS
92
1_555
B
HEM
201
F
FE
HEM
1_555
B
HEM
201
F
ND
HEM
1_555
79.8
B
HEM
201
F
NA
HEM
1_555
B
HEM
201
F
FE
HEM
1_555
B
HEM
201
F
ND
HEM
1_555
89.7
B
HEM
201
F
NB
HEM
1_555
B
HEM
201
F
FE
HEM
1_555
B
HEM
201
F
ND
HEM
1_555
176.6
B
HEM
201
F
NC
HEM
1_555
B
HEM
201
F
FE
HEM
1_555
B
HEM
201
F
ND
HEM
1_555
89.6
C
HIS
87
C
NE2
HIS
87
1_555
C
HEM
201
G
FE
HEM
1_555
C
HEM
201
G
NA
HEM
1_555
82.2
C
HIS
87
C
NE2
HIS
87
1_555
C
HEM
201
G
FE
HEM
1_555
C
HEM
201
G
NB
HEM
1_555
89.8
C
HEM
201
G
NA
HEM
1_555
C
HEM
201
G
FE
HEM
1_555
C
HEM
201
G
NB
HEM
1_555
88.3
C
HIS
87
C
NE2
HIS
87
1_555
C
HEM
201
G
FE
HEM
1_555
C
HEM
201
G
NC
HEM
1_555
92.7
C
HEM
201
G
NA
HEM
1_555
C
HEM
201
G
FE
HEM
1_555
C
HEM
201
G
NC
HEM
1_555
174.9
C
HEM
201
G
NB
HEM
1_555
C
HEM
201
G
FE
HEM
1_555
C
HEM
201
G
NC
HEM
1_555
91.7
C
HIS
87
C
NE2
HIS
87
1_555
C
HEM
201
G
FE
HEM
1_555
C
HEM
201
G
ND
HEM
1_555
88.5
C
HEM
201
G
NA
HEM
1_555
C
HEM
201
G
FE
HEM
1_555
C
HEM
201
G
ND
HEM
1_555
91.5
C
HEM
201
G
NB
HEM
1_555
C
HEM
201
G
FE
HEM
1_555
C
HEM
201
G
ND
HEM
1_555
178.3
C
HEM
201
G
NC
HEM
1_555
C
HEM
201
G
FE
HEM
1_555
C
HEM
201
G
ND
HEM
1_555
88.3
D
HIS
92
D
NE2
HIS
92
1_555
D
HEM
201
H
FE
HEM
1_555
D
HEM
201
H
NA
HEM
1_555
77.8
D
HIS
92
D
NE2
HIS
92
1_555
D
HEM
201
H
FE
HEM
1_555
D
HEM
201
H
NB
HEM
1_555
95.3
D
HEM
201
H
NA
HEM
1_555
D
HEM
201
H
FE
HEM
1_555
D
HEM
201
H
NB
HEM
1_555
87.7
D
HIS
92
D
NE2
HIS
92
1_555
D
HEM
201
H
FE
HEM
1_555
D
HEM
201
H
NC
HEM
1_555
96.1
D
HEM
201
H
NA
HEM
1_555
D
HEM
201
H
FE
HEM
1_555
D
HEM
201
H
NC
HEM
1_555
173.8
D
HEM
201
H
NB
HEM
1_555
D
HEM
201
H
FE
HEM
1_555
D
HEM
201
H
NC
HEM
1_555
91.6
D
HIS
92
D
NE2
HIS
92
1_555
D
HEM
201
H
FE
HEM
1_555
D
HEM
201
H
ND
HEM
1_555
82.2
D
HEM
201
H
NA
HEM
1_555
D
HEM
201
H
FE
HEM
1_555
D
HEM
201
H
ND
HEM
1_555
91.9
D
HEM
201
H
NB
HEM
1_555
D
HEM
201
H
FE
HEM
1_555
D
HEM
201
H
ND
HEM
1_555
177.5
D
HEM
201
H
NC
HEM
1_555
D
HEM
201
H
FE
HEM
1_555
D
HEM
201
H
ND
HEM
1_555
88.6
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
4
A
LEU
80
-98.08
30.31
5
C
LEU
80
-96.60
30.00
5
D
PHE
85
-109.34
41.22
5
D
LYS
95
-131.35
-35.53
8
C
LEU
80
-96.70
31.36
10
A
LEU
80
-95.48
30.36
0.009
4616
1.003
6334
7.095
2616
0.055
692
0.011
792
refinement
PHENIX
1.11.1_2580:
N
human methemoglobin state 1 determined using single-particle cryo-EM at 200 keV
1
N
N
2
N
N
1
N
N
2
N
N
3
N
N
3
N
N
3
N
N
3
N
N
A
SER
3
A
SER
3
HELX_P
A
GLY
18
A
GLY
18
1
AA1
16
A
HIS
20
A
HIS
20
HELX_P
A
PHE
36
A
PHE
36
1
AA2
17
A
PRO
37
A
PRO
37
HELX_P
A
PHE
43
A
PHE
43
5
AA3
7
A
SER
52
A
SER
52
HELX_P
A
HIS
72
A
HIS
72
1
AA4
21
A
ASP
75
A
ASP
75
HELX_P
A
LEU
80
A
LEU
80
1
AA5
6
A
LEU
80
A
LEU
80
HELX_P
A
ALA
88
A
ALA
88
1
AA6
9
A
ASP
94
A
ASP
94
HELX_P
A
LEU
113
A
LEU
113
1
AA7
20
A
THR
118
A
THR
118
HELX_P
A
SER
138
A
SER
138
1
AA8
21
B
THR
4
B
THR
4
HELX_P
B
GLY
16
B
GLY
16
1
AA9
13
B
ASN
19
B
ASN
19
HELX_P
B
TYR
35
B
TYR
35
1
AB1
17
B
PRO
36
B
PRO
36
HELX_P
B
GLY
46
B
GLY
46
5
AB2
11
B
THR
50
B
THR
50
HELX_P
B
MET
55
B
MET
55
1
AB3
6
B
ASN
57
B
ASN
57
HELX_P
B
ALA
76
B
ALA
76
1
AB4
20
B
ASN
80
B
ASN
80
HELX_P
B
PHE
85
B
PHE
85
1
AB5
6
B
PHE
85
B
PHE
85
HELX_P
B
ASP
94
B
ASP
94
1
AB6
10
B
ASP
99
B
ASP
99
HELX_P
B
GLY
119
B
GLY
119
1
AB7
21
B
LYS
120
B
LYS
120
HELX_P
B
PHE
122
B
PHE
122
5
AB8
3
B
THR
123
B
THR
123
HELX_P
B
ALA
142
B
ALA
142
1
AB9
20
C
SER
3
C
SER
3
HELX_P
C
GLY
18
C
GLY
18
1
AC1
16
C
HIS
20
C
HIS
20
HELX_P
C
PHE
36
C
PHE
36
1
AC2
17
C
PRO
37
C
PRO
37
HELX_P
C
PHE
43
C
PHE
43
5
AC3
7
C
SER
52
C
SER
52
HELX_P
C
HIS
72
C
HIS
72
1
AC4
21
C
ASP
75
C
ASP
75
HELX_P
C
LEU
80
C
LEU
80
1
AC5
6
C
LEU
80
C
LEU
80
HELX_P
C
ALA
88
C
ALA
88
1
AC6
9
C
ASP
94
C
ASP
94
HELX_P
C
LEU
113
C
LEU
113
1
AC7
20
C
THR
118
C
THR
118
HELX_P
C
THR
137
C
THR
137
1
AC8
20
D
THR
4
D
THR
4
HELX_P
D
GLY
16
D
GLY
16
1
AC9
13
D
ASN
19
D
ASN
19
HELX_P
D
TYR
35
D
TYR
35
1
AD1
17
D
PRO
36
D
PRO
36
HELX_P
D
GLY
46
D
GLY
46
5
AD2
11
D
THR
50
D
THR
50
HELX_P
D
MET
55
D
MET
55
1
AD3
6
D
ASN
57
D
ASN
57
HELX_P
D
ALA
76
D
ALA
76
1
AD4
20
D
ASN
80
D
ASN
80
HELX_P
D
PHE
85
D
PHE
85
1
AD5
6
D
ALA
86
D
ALA
86
HELX_P
D
ASP
94
D
ASP
94
1
AD6
9
D
ASP
99
D
ASP
99
HELX_P
D
GLY
119
D
GLY
119
1
AD7
21
D
LYS
120
D
LYS
120
HELX_P
D
PHE
122
D
PHE
122
5
AD8
3
D
THR
123
D
THR
123
HELX_P
D
ALA
142
D
ALA
142
1
AD9
20
metalc
2.073
A
HIS
87
A
NE2
HIS
87
1_555
A
HEM
201
E
FE
HEM
1_555
metalc
2.152
B
HIS
92
B
NE2
HIS
92
1_555
B
HEM
201
F
FE
HEM
1_555
metalc
2.075
C
HIS
87
C
NE2
HIS
87
1_555
C
HEM
201
G
FE
HEM
1_555
metalc
2.176
D
HIS
92
D
NE2
HIS
92
1_555
D
HEM
201
H
FE
HEM
1_555
OXYGEN TRANSPORT
heme-binding, hetero-4-mer, globin, OXYGEN TRANSPORT
HBA_HUMAN
UNP
1
2
P69905
VLSPADKTNVKAAWGKVGAHAGEYGAEALERMFLSFPTTKTYFPHFDLSHGSAQVKGHGKKVADALTNAVAHVDDMPNAL
SALSDLHAHKLRVDPVNFKLLSHCLLVTLAAHLPAEFTPAVHASLDKFLASVSTVLTSKY
HBB_HUMAN
UNP
2
2
P68871
VHLTPEEKSAVTALWGKVNVDEVGGEALGRLLVVYPWTQRFFESFGDLSTPDAVMGNPKVKAHGKKVLGAFSDGLAHLDN
LKGTFATLSELHCDKLHVDPENFRLLGNVLVCVLAHHFGKEFTPPVQAAYQKVVAGVANALAH
2
141
6NBC
1
140
P69905
A
1
1
140
2
144
6NBC
1
143
P68871
B
2
1
143
2
141
6NBC
1
140
P69905
C
1
1
140
2
144
6NBC
1
143
P68871
D
2
1
143
binding site for residue HEM A 201
A
HEM
201
Software
13
binding site for residue HEM B 201
B
HEM
201
Software
13
binding site for residue HEM C 201
C
HEM
201
Software
12
binding site for residue HEM D 201
D
HEM
201
Software
13
A
TYR
42
A
TYR
42
13
1_555
A
PHE
43
A
PHE
43
13
1_555
A
HIS
45
A
HIS
45
13
1_555
A
PHE
46
A
PHE
46
13
1_555
A
HIS
58
A
HIS
58
13
1_555
A
LYS
61
A
LYS
61
13
1_555
A
LEU
86
A
LEU
86
13
1_555
A
HIS
87
A
HIS
87
13
1_555
A
LEU
91
A
LEU
91
13
1_555
A
VAL
93
A
VAL
93
13
1_555
A
ASN
97
A
ASN
97
13
1_555
A
PHE
98
A
PHE
98
13
1_555
A
LEU
101
A
LEU
101
13
1_555
B
THR
38
B
THR
38
13
1_555
B
PHE
41
B
PHE
41
13
1_555
B
PHE
42
B
PHE
42
13
1_555
B
PHE
45
B
PHE
45
13
1_555
B
HIS
63
B
HIS
63
13
1_555
B
LYS
66
B
LYS
66
13
1_555
B
LEU
88
B
LEU
88
13
1_555
B
HIS
92
B
HIS
92
13
1_555
B
LEU
96
B
LEU
96
13
1_555
B
ASN
102
B
ASN
102
13
1_555
B
PHE
103
B
PHE
103
13
1_555
B
LEU
106
B
LEU
106
13
1_555
B
LEU
141
B
LEU
141
13
1_555
C
TYR
42
C
TYR
42
12
1_555
C
PHE
43
C
PHE
43
12
1_555
C
HIS
45
C
HIS
45
12
1_555
C
PHE
46
C
PHE
46
12
1_555
C
HIS
58
C
HIS
58
12
1_555
C
LYS
61
C
LYS
61
12
1_555
C
LEU
86
C
LEU
86
12
1_555
C
HIS
87
C
HIS
87
12
1_555
C
LEU
91
C
LEU
91
12
1_555
C
ASN
97
C
ASN
97
12
1_555
C
PHE
98
C
PHE
98
12
1_555
C
LEU
101
C
LEU
101
12
1_555
D
THR
38
D
THR
38
13
1_555
D
PHE
41
D
PHE
41
13
1_555
D
PHE
42
D
PHE
42
13
1_555
D
PHE
45
D
PHE
45
13
1_555
D
HIS
63
D
HIS
63
13
1_555
D
LYS
66
D
LYS
66
13
1_555
D
PHE
71
D
PHE
71
13
1_555
D
HIS
92
D
HIS
92
13
1_555
D
LEU
96
D
LEU
96
13
1_555
D
ASN
102
D
ASN
102
13
1_555
D
PHE
103
D
PHE
103
13
1_555
D
LEU
106
D
LEU
106
13
1_555
D
LEU
141
D
LEU
141
13
1_555
1
P 1