0.021350
0.000000
0.000000
0.000000
0.019921
0.000000
0.000000
0.000000
0.012856
0.000000
0.000000
0.000000
Calderone, V.
Berni, R.
Zanotti, G.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
4
90.00
90.00
90.00
46.839
50.198
77.782
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
C20 H30 O
286.452
RETINOL
non-polymer
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
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
C
N
291
N
C
N
292
N
C
N
293
N
C
N
294
N
C
N
295
N
C
N
296
N
C
N
297
N
C
N
298
N
C
N
299
N
C
N
300
N
C
N
301
N
C
N
302
N
C
N
303
N
C
N
304
N
C
N
305
N
O
N
306
N
C
N
307
N
C
N
308
N
C
N
309
N
C
N
310
N
C
N
311
N
H
N
312
N
H
N
313
N
H
N
314
N
H
N
315
N
H
N
316
N
H
N
317
N
H
N
318
N
H
N
319
N
H
N
320
N
H
N
321
N
H
N
322
N
H
N
323
N
H
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
H
N
336
N
H
N
337
N
H
N
338
N
H
N
339
N
H
N
340
N
H
N
341
N
N
N
342
S
C
N
343
N
C
N
344
N
O
N
345
N
C
N
346
N
O
N
347
N
O
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
N
N
356
S
C
N
357
N
C
N
358
N
O
N
359
R
C
N
360
N
O
N
361
N
C
N
362
N
O
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
Y
377
N
C
Y
378
N
C
Y
379
N
C
Y
380
N
N
Y
381
N
C
Y
382
N
C
Y
383
N
C
Y
384
N
C
Y
385
N
C
N
386
N
O
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
H
N
399
N
N
N
400
S
C
N
401
N
C
N
402
N
O
N
403
N
C
Y
404
N
C
Y
405
N
C
Y
406
N
C
Y
407
N
C
Y
408
N
C
Y
409
N
C
N
410
N
O
N
411
N
O
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
H
N
423
N
N
N
424
S
C
N
425
N
C
N
426
N
O
N
427
N
C
N
428
N
C
N
429
N
C
N
430
N
O
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
441
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
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
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
doub
N
291
N
sing
N
292
N
sing
N
293
E
doub
N
294
N
sing
N
295
N
sing
N
296
N
sing
N
297
E
doub
N
298
N
sing
N
299
N
sing
N
300
N
sing
N
301
E
doub
N
302
N
sing
N
303
N
sing
N
304
N
sing
N
305
E
doub
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
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
doub
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
sing
N
343
N
sing
N
344
N
sing
N
345
N
sing
N
346
N
sing
N
347
N
doub
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
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
doub
N
364
N
sing
N
365
N
sing
N
366
N
sing
N
367
N
sing
Y
368
N
doub
Y
369
N
sing
Y
370
N
sing
N
371
N
sing
Y
372
N
doub
Y
373
N
sing
Y
374
N
sing
N
375
N
sing
Y
376
N
sing
Y
377
N
doub
N
378
N
sing
Y
379
N
doub
N
380
N
sing
Y
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
sing
N
389
N
sing
N
390
N
sing
N
391
N
doub
N
392
N
sing
N
393
N
sing
N
394
N
sing
N
395
N
sing
Y
396
N
doub
Y
397
N
sing
Y
398
N
sing
N
399
N
sing
Y
400
N
doub
N
401
N
sing
Y
402
N
doub
N
403
N
sing
Y
404
N
sing
N
405
N
sing
N
406
N
sing
N
407
N
sing
N
408
N
sing
N
409
N
sing
N
410
N
sing
N
411
N
sing
N
412
N
sing
N
413
N
sing
N
414
N
sing
N
415
N
doub
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
sing
N
424
N
sing
N
425
N
sing
N
426
N
sing
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
329
841
850
10.1016/S0022-2836(03)00468-6
12787682
High-resolution Structures of
Retinol-binding Protein in
Complex with Retinol: pH-induced Protein Structural
Changes in the Crystal State
2003
US
Proteins
PSFGEY
0867
0887-3585
8
44
53
Crystallographic Refinement of Human Serum Retinol Binding Protein
at 2A Resolution.
1990
US
J.Biol.Chem.
JBCHA3
0071
0021-9258
268
10728
10738
Crystal Structure of Liganded and Unliganded Forms of Bovine Plasma
Retinol-Binding Protein
1993
10.2210/pdb1kt3/pdb
pdb_00001kt3
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
100
1
CCD
2001-02-10
MARRESEARCH
SINGLE WAVELENGTH
M
x-ray
1
0.9393
1.0
ID14-4
ESRF
0.9393
SYNCHROTRON
ESRF BEAMLINE ID14-4
21095.654
Plasma retinol-binding protein
1
nat
polymer
286.452
RETINOL
1
syn
non-polymer
18.015
water
194
nat
water
RBP
no
no
ERDCRVSSFRVKENFDKARFAGTWYAMAKKDPEGLFLQDNIVAEFSVDENGHMSATAKGRVRLLNNWDVCADMVGTFTDT
EDPAKFKMKYWGVASFLQKGNDDHWIIDTDYETFAVQYSCRLLNLDGTCADSYSFVFARDPSGFSPEVQKIVRQRQEELC
LARQYRLIPHNGYCDGKSERNIL
ERDCRVSSFRVKENFDKARFAGTWYAMAKKDPEGLFLQDNIVAEFSVDENGHMSATAKGRVRLLNNWDVCADMVGTFTDT
EDPAKFKMKYWGVASFLQKGNDDHWIIDTDYETFAVQYSCRLLNLDGTCADSYSFVFARDPSGFSPEVQKIVRQRQEELC
LARQYRLIPHNGYCDGKSERNIL
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
cattle
Bos
sample
9913
Bos taurus
1
1.94
43.23
VAPOR DIFFUSION, SITTING DROP
2.0
50 mM Na citrate, 100 mM NaCl, pH 2.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
293
chem_comp_atom
chem_comp_bond
database_2
pdbx_initial_refinement_model
struct_site
repository
Initial release
Version format compliance
Version format compliance
Data collection
Database references
Derived calculations
Refinement description
1
0
2003-06-03
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_site.pdbx_auth_asym_id
_struct_site.pdbx_auth_comp_id
_struct_site.pdbx_auth_seq_id
Bovine holo retinol-binding
protein at 1.9A resolution
Bovine apo retinol-binding
protein at 1.7A resolution
Human serum retinol-binding
protein at 2A resolution
bovine holo-RBP at pH 3.0
bovine holo-RBP at pH 4.0
bovine holo-RBP at pH 9.0
bovine holo-RBP at pH 7.0
RCSB
Y
RCSB
2002-01-15
REL
RTL
RETINOL
HOH
water
1HBP
PDB
experimental model
RET
176
2
RTL
RTL
184
A
HOH
177
3
HOH
HOH
185
A
HOH
178
3
HOH
HOH
186
A
HOH
179
3
HOH
HOH
187
A
HOH
180
3
HOH
HOH
188
A
HOH
181
3
HOH
HOH
189
A
HOH
182
3
HOH
HOH
190
A
HOH
183
3
HOH
HOH
191
A
HOH
184
3
HOH
HOH
192
A
HOH
185
3
HOH
HOH
193
A
HOH
186
3
HOH
HOH
194
A
HOH
189
3
HOH
HOH
195
A
HOH
190
3
HOH
HOH
196
A
HOH
192
3
HOH
HOH
197
A
HOH
193
3
HOH
HOH
198
A
HOH
194
3
HOH
HOH
199
A
HOH
195
3
HOH
HOH
200
A
HOH
196
3
HOH
HOH
201
A
HOH
197
3
HOH
HOH
202
A
HOH
198
3
HOH
HOH
203
A
HOH
199
3
HOH
HOH
204
A
HOH
202
3
HOH
HOH
205
A
HOH
204
3
HOH
HOH
206
A
HOH
205
3
HOH
HOH
207
A
HOH
209
3
HOH
HOH
208
A
HOH
210
3
HOH
HOH
209
A
HOH
211
3
HOH
HOH
210
A
HOH
212
3
HOH
HOH
211
A
HOH
213
3
HOH
HOH
212
A
HOH
214
3
HOH
HOH
213
A
HOH
215
3
HOH
HOH
214
A
HOH
216
3
HOH
HOH
215
A
HOH
217
3
HOH
HOH
216
A
HOH
218
3
HOH
HOH
217
A
HOH
219
3
HOH
HOH
218
A
HOH
220
3
HOH
HOH
219
A
HOH
221
3
HOH
HOH
220
A
HOH
222
3
HOH
HOH
221
A
HOH
223
3
HOH
HOH
222
A
HOH
224
3
HOH
HOH
223
A
HOH
225
3
HOH
HOH
224
A
HOH
226
3
HOH
HOH
225
A
HOH
227
3
HOH
HOH
226
A
HOH
228
3
HOH
HOH
227
A
HOH
229
3
HOH
HOH
228
A
HOH
230
3
HOH
HOH
229
A
HOH
231
3
HOH
HOH
230
A
HOH
232
3
HOH
HOH
231
A
HOH
233
3
HOH
HOH
232
A
HOH
234
3
HOH
HOH
233
A
HOH
235
3
HOH
HOH
234
A
HOH
236
3
HOH
HOH
235
A
HOH
237
3
HOH
HOH
236
A
HOH
238
3
HOH
HOH
237
A
HOH
239
3
HOH
HOH
238
A
HOH
240
3
HOH
HOH
239
A
HOH
241
3
HOH
HOH
240
A
HOH
242
3
HOH
HOH
241
A
HOH
243
3
HOH
HOH
242
A
HOH
244
3
HOH
HOH
243
A
HOH
245
3
HOH
HOH
244
A
HOH
246
3
HOH
HOH
245
A
HOH
247
3
HOH
HOH
246
A
HOH
248
3
HOH
HOH
247
A
HOH
249
3
HOH
HOH
248
A
HOH
250
3
HOH
HOH
249
A
HOH
251
3
HOH
HOH
250
A
HOH
252
3
HOH
HOH
251
A
HOH
253
3
HOH
HOH
252
A
HOH
254
3
HOH
HOH
253
A
HOH
255
3
HOH
HOH
254
A
HOH
256
3
HOH
HOH
255
A
HOH
257
3
HOH
HOH
256
A
HOH
258
3
HOH
HOH
257
A
HOH
259
3
HOH
HOH
258
A
HOH
260
3
HOH
HOH
259
A
HOH
261
3
HOH
HOH
260
A
HOH
262
3
HOH
HOH
261
A
HOH
263
3
HOH
HOH
262
A
HOH
264
3
HOH
HOH
263
A
HOH
265
3
HOH
HOH
264
A
HOH
266
3
HOH
HOH
265
A
HOH
267
3
HOH
HOH
266
A
HOH
268
3
HOH
HOH
267
A
HOH
269
3
HOH
HOH
268
A
HOH
270
3
HOH
HOH
269
A
HOH
271
3
HOH
HOH
270
A
HOH
272
3
HOH
HOH
271
A
HOH
273
3
HOH
HOH
272
A
HOH
275
3
HOH
HOH
273
A
HOH
276
3
HOH
HOH
274
A
HOH
277
3
HOH
HOH
275
A
HOH
278
3
HOH
HOH
276
A
HOH
279
3
HOH
HOH
277
A
HOH
280
3
HOH
HOH
278
A
HOH
281
3
HOH
HOH
279
A
HOH
282
3
HOH
HOH
280
A
HOH
283
3
HOH
HOH
281
A
HOH
284
3
HOH
HOH
282
A
HOH
286
3
HOH
HOH
283
A
HOH
287
3
HOH
HOH
284
A
HOH
288
3
HOH
HOH
285
A
HOH
289
3
HOH
HOH
286
A
HOH
290
3
HOH
HOH
287
A
HOH
291
3
HOH
HOH
288
A
HOH
292
3
HOH
HOH
289
A
HOH
293
3
HOH
HOH
290
A
HOH
294
3
HOH
HOH
291
A
HOH
295
3
HOH
HOH
292
A
HOH
296
3
HOH
HOH
293
A
HOH
297
3
HOH
HOH
294
A
HOH
298
3
HOH
HOH
295
A
HOH
300
3
HOH
HOH
296
A
HOH
301
3
HOH
HOH
297
A
HOH
302
3
HOH
HOH
298
A
HOH
303
3
HOH
HOH
299
A
HOH
304
3
HOH
HOH
300
A
HOH
305
3
HOH
HOH
301
A
HOH
306
3
HOH
HOH
302
A
HOH
307
3
HOH
HOH
303
A
HOH
308
3
HOH
HOH
304
A
HOH
309
3
HOH
HOH
305
A
HOH
310
3
HOH
HOH
306
A
HOH
311
3
HOH
HOH
307
A
HOH
312
3
HOH
HOH
308
A
HOH
313
3
HOH
HOH
309
A
HOH
314
3
HOH
HOH
310
A
HOH
315
3
HOH
HOH
311
A
HOH
316
3
HOH
HOH
312
A
HOH
317
3
HOH
HOH
313
A
HOH
318
3
HOH
HOH
314
A
HOH
319
3
HOH
HOH
315
A
HOH
320
3
HOH
HOH
316
A
HOH
321
3
HOH
HOH
317
A
HOH
322
3
HOH
HOH
318
A
HOH
323
3
HOH
HOH
319
A
HOH
324
3
HOH
HOH
320
A
HOH
325
3
HOH
HOH
321
A
HOH
326
3
HOH
HOH
322
A
HOH
327
3
HOH
HOH
323
A
HOH
328
3
HOH
HOH
324
A
HOH
329
3
HOH
HOH
325
A
HOH
330
3
HOH
HOH
326
A
HOH
331
3
HOH
HOH
327
A
HOH
332
3
HOH
HOH
328
A
HOH
333
3
HOH
HOH
329
A
HOH
334
3
HOH
HOH
330
A
HOH
335
3
HOH
HOH
331
A
HOH
336
3
HOH
HOH
332
A
HOH
337
3
HOH
HOH
333
A
HOH
338
3
HOH
HOH
334
A
HOH
339
3
HOH
HOH
335
A
HOH
340
3
HOH
HOH
336
A
HOH
341
3
HOH
HOH
337
A
HOH
342
3
HOH
HOH
338
A
HOH
343
3
HOH
HOH
339
A
HOH
344
3
HOH
HOH
340
A
HOH
345
3
HOH
HOH
341
A
HOH
346
3
HOH
HOH
342
A
HOH
347
3
HOH
HOH
343
A
HOH
348
3
HOH
HOH
344
A
HOH
349
3
HOH
HOH
345
A
HOH
350
3
HOH
HOH
346
A
HOH
351
3
HOH
HOH
347
A
HOH
352
3
HOH
HOH
348
A
HOH
353
3
HOH
HOH
349
A
HOH
354
3
HOH
HOH
350
A
HOH
355
3
HOH
HOH
351
A
HOH
357
3
HOH
HOH
352
A
HOH
358
3
HOH
HOH
353
A
HOH
359
3
HOH
HOH
354
A
HOH
360
3
HOH
HOH
355
A
HOH
361
3
HOH
HOH
356
A
HOH
362
3
HOH
HOH
357
A
HOH
363
3
HOH
HOH
358
A
HOH
364
3
HOH
HOH
359
A
HOH
365
3
HOH
HOH
360
A
HOH
366
3
HOH
HOH
361
A
HOH
367
3
HOH
HOH
362
A
HOH
368
3
HOH
HOH
363
A
HOH
370
3
HOH
HOH
364
A
HOH
371
3
HOH
HOH
365
A
HOH
372
3
HOH
HOH
366
A
HOH
373
3
HOH
HOH
367
A
HOH
374
3
HOH
HOH
368
A
HOH
375
3
HOH
HOH
369
A
HOH
376
3
HOH
HOH
370
A
HOH
377
3
HOH
HOH
371
A
HOH
378
3
HOH
HOH
372
A
HOH
379
3
HOH
HOH
373
A
HOH
380
3
HOH
HOH
374
A
HOH
381
3
HOH
HOH
375
A
HOH
382
3
HOH
HOH
376
A
HOH
383
3
HOH
HOH
377
A
HOH
385
3
HOH
HOH
378
A
GLU
1
n
1
GLU
1
A
ARG
2
n
2
ARG
2
A
ASP
3
n
3
ASP
3
A
CYS
4
n
4
CYS
4
A
ARG
5
n
5
ARG
5
A
VAL
6
n
6
VAL
6
A
SER
7
n
7
SER
7
A
SER
8
n
8
SER
8
A
PHE
9
n
9
PHE
9
A
ARG
10
n
10
ARG
10
A
VAL
11
n
11
VAL
11
A
LYS
12
n
12
LYS
12
A
GLU
13
n
13
GLU
13
A
ASN
14
n
14
ASN
14
A
PHE
15
n
15
PHE
15
A
ASP
16
n
16
ASP
16
A
LYS
17
n
17
LYS
17
A
ALA
18
n
18
ALA
18
A
ARG
19
n
19
ARG
19
A
PHE
20
n
20
PHE
20
A
ALA
21
n
21
ALA
21
A
GLY
22
n
22
GLY
22
A
THR
23
n
23
THR
23
A
TRP
24
n
24
TRP
24
A
TYR
25
n
25
TYR
25
A
ALA
26
n
26
ALA
26
A
MET
27
n
27
MET
27
A
ALA
28
n
28
ALA
28
A
LYS
29
n
29
LYS
29
A
LYS
30
n
30
LYS
30
A
ASP
31
n
31
ASP
31
A
PRO
32
n
32
PRO
32
A
GLU
33
n
33
GLU
33
A
GLY
34
n
34
GLY
34
A
LEU
35
n
35
LEU
35
A
PHE
36
n
36
PHE
36
A
LEU
37
n
37
LEU
37
A
GLN
38
n
38
GLN
38
A
ASP
39
n
39
ASP
39
A
ASN
40
n
40
ASN
40
A
ILE
41
n
41
ILE
41
A
VAL
42
n
42
VAL
42
A
ALA
43
n
43
ALA
43
A
GLU
44
n
44
GLU
44
A
PHE
45
n
45
PHE
45
A
SER
46
n
46
SER
46
A
VAL
47
n
47
VAL
47
A
ASP
48
n
48
ASP
48
A
GLU
49
n
49
GLU
49
A
ASN
50
n
50
ASN
50
A
GLY
51
n
51
GLY
51
A
HIS
52
n
52
HIS
52
A
MET
53
n
53
MET
53
A
SER
54
n
54
SER
54
A
ALA
55
n
55
ALA
55
A
THR
56
n
56
THR
56
A
ALA
57
n
57
ALA
57
A
LYS
58
n
58
LYS
58
A
GLY
59
n
59
GLY
59
A
ARG
60
n
60
ARG
60
A
VAL
61
n
61
VAL
61
A
ARG
62
n
62
ARG
62
A
LEU
63
n
63
LEU
63
A
LEU
64
n
64
LEU
64
A
ASN
65
n
65
ASN
65
A
ASN
66
n
66
ASN
66
A
TRP
67
n
67
TRP
67
A
ASP
68
n
68
ASP
68
A
VAL
69
n
69
VAL
69
A
CYS
70
n
70
CYS
70
A
ALA
71
n
71
ALA
71
A
ASP
72
n
72
ASP
72
A
MET
73
n
73
MET
73
A
VAL
74
n
74
VAL
74
A
GLY
75
n
75
GLY
75
A
THR
76
n
76
THR
76
A
PHE
77
n
77
PHE
77
A
THR
78
n
78
THR
78
A
ASP
79
n
79
ASP
79
A
THR
80
n
80
THR
80
A
GLU
81
n
81
GLU
81
A
ASP
82
n
82
ASP
82
A
PRO
83
n
83
PRO
83
A
ALA
84
n
84
ALA
84
A
LYS
85
n
85
LYS
85
A
PHE
86
n
86
PHE
86
A
LYS
87
n
87
LYS
87
A
MET
88
n
88
MET
88
A
LYS
89
n
89
LYS
89
A
TYR
90
n
90
TYR
90
A
TRP
91
n
91
TRP
91
A
GLY
92
n
92
GLY
92
A
VAL
93
n
93
VAL
93
A
ALA
94
n
94
ALA
94
A
SER
95
n
95
SER
95
A
PHE
96
n
96
PHE
96
A
LEU
97
n
97
LEU
97
A
GLN
98
n
98
GLN
98
A
LYS
99
n
99
LYS
99
A
GLY
100
n
100
GLY
100
A
ASN
101
n
101
ASN
101
A
ASP
102
n
102
ASP
102
A
ASP
103
n
103
ASP
103
A
HIS
104
n
104
HIS
104
A
TRP
105
n
105
TRP
105
A
ILE
106
n
106
ILE
106
A
ILE
107
n
107
ILE
107
A
ASP
108
n
108
ASP
108
A
THR
109
n
109
THR
109
A
ASP
110
n
110
ASP
110
A
TYR
111
n
111
TYR
111
A
GLU
112
n
112
GLU
112
A
THR
113
n
113
THR
113
A
PHE
114
n
114
PHE
114
A
ALA
115
n
115
ALA
115
A
VAL
116
n
116
VAL
116
A
GLN
117
n
117
GLN
117
A
TYR
118
n
118
TYR
118
A
SER
119
n
119
SER
119
A
CYS
120
n
120
CYS
120
A
ARG
121
n
121
ARG
121
A
LEU
122
n
122
LEU
122
A
LEU
123
n
123
LEU
123
A
ASN
124
n
124
ASN
124
A
LEU
125
n
125
LEU
125
A
ASP
126
n
126
ASP
126
A
GLY
127
n
127
GLY
127
A
THR
128
n
128
THR
128
A
CYS
129
n
129
CYS
129
A
ALA
130
n
130
ALA
130
A
ASP
131
n
131
ASP
131
A
SER
132
n
132
SER
132
A
TYR
133
n
133
TYR
133
A
SER
134
n
134
SER
134
A
PHE
135
n
135
PHE
135
A
VAL
136
n
136
VAL
136
A
PHE
137
n
137
PHE
137
A
ALA
138
n
138
ALA
138
A
ARG
139
n
139
ARG
139
A
ASP
140
n
140
ASP
140
A
PRO
141
n
141
PRO
141
A
SER
142
n
142
SER
142
A
GLY
143
n
143
GLY
143
A
PHE
144
n
144
PHE
144
A
SER
145
n
145
SER
145
A
PRO
146
n
146
PRO
146
A
GLU
147
n
147
GLU
147
A
VAL
148
n
148
VAL
148
A
GLN
149
n
149
GLN
149
A
LYS
150
n
150
LYS
150
A
ILE
151
n
151
ILE
151
A
VAL
152
n
152
VAL
152
A
ARG
153
n
153
ARG
153
A
GLN
154
n
154
GLN
154
A
ARG
155
n
155
ARG
155
A
GLN
156
n
156
GLN
156
A
GLU
157
n
157
GLU
157
A
GLU
158
n
158
GLU
158
A
LEU
159
n
159
LEU
159
A
CYS
160
n
160
CYS
160
A
LEU
161
n
161
LEU
161
A
ALA
162
n
162
ALA
162
A
ARG
163
n
163
ARG
163
A
GLN
164
n
164
GLN
164
A
TYR
165
n
165
TYR
165
A
ARG
166
n
166
ARG
166
A
LEU
167
n
167
LEU
167
A
ILE
168
n
168
ILE
168
A
PRO
169
n
169
PRO
169
A
HIS
170
n
170
HIS
170
A
ASN
171
n
171
ASN
171
A
GLY
172
n
172
GLY
172
A
TYR
173
n
173
TYR
173
A
CYS
174
n
174
CYS
174
A
ASP
175
n
175
ASP
175
A
n
176
176
A
n
177
177
A
n
178
178
A
n
179
179
A
n
180
180
A
n
181
181
A
n
182
182
A
n
183
183
A
0.169
0.1753
0.1664
0.1746
0.2413
0.2491
1255
1599
5.3
5.2
23485
author_defined_assembly
1
monomeric
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
ARG
166
A
N
ARG
166
A
O
LYS
29
A
O
LYS
29
A
N
ALA
26
A
N
ALA
26
A
O
ILE
41
A
O
ILE
41
A
N
SER
46
A
N
SER
46
A
O
SER
54
A
O
SER
54
A
O
VAL
61
A
O
VAL
61
A
N
VAL
69
A
N
VAL
69
A
N
THR
78
A
N
THR
78
A
O
LYS
87
A
O
LYS
87
A
N
TYR
90
A
N
TYR
90
A
O
GLY
100
A
O
GLY
100
A
O
ASP
108
A
O
ASP
108
A
N
VAL
116
A
N
VAL
116
A
O
LEU
122
A
O
LEU
122
A
N
ALA
130
A
N
ALA
130
A
O
ALA
138
A
O
ALA
138
A
N
TYR
25
A
N
TYR
25
1
A
GLY
176
A
GLY
176
1
Y
1
A
LYS
177
A
LYS
177
1
Y
1
A
SER
178
A
SER
178
1
Y
1
A
GLU
179
A
GLU
179
1
Y
1
A
ARG
180
A
ARG
180
1
Y
1
A
ASN
181
A
ASN
181
1
Y
1
A
ILE
182
A
ILE
182
1
Y
1
A
LEU
183
A
LEU
183
1
Y
1
A
A
C
N
GLY
PHE
143
144
1.60
1
9.64
1.40
123.60
133.24
A
A
A
CD
NE
CZ
ARG
ARG
ARG
5
5
5
N
1
3.62
0.50
120.30
123.92
A
A
A
NE
CZ
NH2
ARG
ARG
ARG
5
5
5
N
1
5.43
0.90
118.30
123.73
A
A
A
CB
CG
OD2
ASP
ASP
ASP
31
31
31
N
1
17.32
2.20
113.40
130.72
A
A
A
CA
CB
CG
ARG
ARG
ARG
60
60
60
N
1
7.26
0.90
118.30
125.56
A
A
A
CB
CG
OD1
ASP
ASP
ASP
108
108
108
N
1
3.83
0.60
121.00
124.83
A
A
A
CB
CG
CD2
TYR
TYR
TYR
118
118
118
N
1
3.65
0.50
120.30
123.95
A
A
A
NE
CZ
NH1
ARG
ARG
ARG
121
121
121
N
1
13.55
1.90
113.40
126.95
A
A
A
CA
CB
CG
TYR
TYR
TYR
133
133
133
N
1
20.20
2.50
113.10
133.30
A
A
A
N
CA
C
GLY
GLY
GLY
143
143
143
N
1
-26.04
2.50
121.70
95.66
A
A
A
C
N
CA
GLY
PHE
PHE
143
144
144
Y
1
18.08
1.80
110.60
128.68
A
A
A
N
CA
CB
PHE
PHE
PHE
144
144
144
N
1
5.22
0.70
120.80
126.02
A
A
A
CB
CG
CD1
PHE
PHE
PHE
144
144
144
N
1
9.34
1.40
123.60
132.94
A
A
A
CD
NE
CZ
ARG
ARG
ARG
153
153
153
N
1
7.31
1.20
111.50
118.81
A
A
A
CB
CA
C
CYS
CYS
CYS
160
160
160
N
1
8.77
1.40
123.60
132.37
A
A
A
CD
NE
CZ
ARG
ARG
ARG
166
166
166
N
1
A
A
C
N
GLY
PHE
143
144
0.267
0.023
1.336
1.603
Y
1
A
A
N
CA
PHE
PHE
144
144
0.229
0.020
1.459
1.688
N
1
A
ASN
66
62.03
-6.19
1
A
TYR
111
67.72
-27.42
1
A
THR
113
-120.63
-54.25
1
A
PRO
141
-69.57
39.42
1
A
PHE
144
77.00
117.94
0.2491
0.1746
0.1753
1.40
34.246
14484
1599
32419
32419
17663
5.2
82.8
RANDOM
1
FREE R
0.0
MOLECULAR REPLACEMENT
1HBP
ENGH AND HUBER
0
0.00
1609.00
1.40
34.246
194
1633
21
0
1418
0.015
0.046
0.000
0.0280
0.041
0.051
0.012
0.003
0.068
0.086
1.399
34.246
1KT3
32419
32419
0.0
0.0
0.069
0.069
1
5.7
3.6
87.8
0.464
1.40
1.47
1.0
1249
0.464
2.3
42.7
data reduction
MOSFLM
data scaling
SCALA
model building
SHELX
refinement
SHELXL-97
data scaling
CCP4
(SCALA)
phasing
SHELX
Crystal structure of bovine holo-RBP at pH 2.0
1
N
N
2
N
N
3
N
N
A
ARG
5
A
ARG
5
HELX_P
A
PHE
9
A
PHE
9
5
1
5
A
ASP
16
A
ASP
16
HELX_P
A
ALA
21
A
ALA
21
1
2
6
A
SER
145
A
SER
145
HELX_P
A
LEU
159
A
LEU
159
1
3
15
disulf
2.049
A
CYS
4
A
SG
CYS
4
1_555
A
CYS
160
A
SG
CYS
160
1_555
disulf
2.084
A
CYS
70
A
SG
CYS
70
1_555
A
CYS
174
A
SG
CYS
174
1_555
disulf
2.132
A
CYS
120
A
SG
CYS
120
1_555
A
CYS
129
A
SG
CYS
129
1_555
TRANSPORT PROTEIN
RBP, retinol binding, TRANSPORT PROTEIN
RETBP_BOVIN
UNP
1
1
P18902
ERDCRVSSFRVKENFDKARFAGTWYAMAKKDPEGLFLQDNIVAEFSVDENGHMSATAKGRVRLLNNWDVCADMVGTFTDT
EDPAKFKMKYWGVASFLQKGNDDHWIIDTDYETFAVQYSCRLLNLDGTCADSYSFVFARDPSGFSPEVQKIVRQRQEELC
LARQYRLIPHNGYCDGKSERNIL
1
183
1KT3
1
183
P18902
A
1
1
183
10
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
A
ARG
166
A
ARG
166
A
LEU
167
A
LEU
167
A
GLY
22
A
GLY
22
A
LYS
30
A
LYS
30
A
ASP
39
A
ASP
39
A
VAL
47
A
VAL
47
A
MET
53
A
MET
53
A
ARG
62
A
ARG
62
A
ASP
68
A
ASP
68
A
ASP
79
A
ASP
79
A
LYS
85
A
LYS
85
A
GLY
92
A
GLY
92
A
GLY
100
A
GLY
100
A
THR
109
A
THR
109
A
PHE
114
A
PHE
114
A
LEU
123
A
LEU
123
A
CYS
129
A
CYS
129
A
ALA
138
A
ALA
138
A
GLY
22
A
GLY
22
A
LYS
30
A
LYS
30
BINDING SITE FOR RESIDUE RTL A 184
A
RTL
184
Software
3
A
LEU
97
A
LEU
97
3
1_555
A
GLN
98
A
GLN
98
3
1_555
A
HOH
242
C
HOH
3
1_555
19
P 21 21 21