0.022831
0.000000
0.000000
0.000000
0.011598
0.000000
0.000000
0.000000
0.015202
0.00000
0.00000
0.00000
Zanotti, G.
D'Acunto, M.R.
Malpeli, G.
Folli, C.
Berni, R.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
8
90.00
90.00
90.00
43.800
86.220
65.780
C20 H28 O2
300.435
(9cis)-retinoic acid
non-polymer
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 H9 N O4
147.129
y
GLUTAMIC ACID
L-peptide linking
C2 H5 N O2
75.067
y
GLYCINE
peptide linking
C6 H10 N3 O2 1
156.162
y
HISTIDINE
L-peptide linking
H2 O
18.015
WATER
non-polymer
C6 H13 N O2
131.173
y
ISOLEUCINE
L-peptide linking
C6 H13 N O2
131.173
y
LEUCINE
L-peptide linking
C6 H15 N2 O2 1
147.195
y
LYSINE
L-peptide linking
C5 H11 N O2 S
149.211
y
METHIONINE
L-peptide linking
C9 H11 N O2
165.189
y
PHENYLALANINE
L-peptide linking
C5 H9 N O2
115.130
y
PROLINE
L-peptide linking
C3 H7 N O3
105.093
y
SERINE
L-peptide linking
C4 H9 N O3
119.119
y
THREONINE
L-peptide linking
C11 H12 N2 O2
204.225
y
TRYPTOPHAN
L-peptide linking
C9 H11 N O3
181.189
y
TYROSINE
L-peptide linking
C5 H11 N O2
117.146
y
VALINE
L-peptide linking
IX
Eur.J.Biochem.
EJBCAI
0262
0014-2956
234
563
569
10.1111/j.1432-1033.1995.563_b.x
8536704
Crystal structure of the transthyretin--retinoic-acid complex
1995
US
J.Biol.Chem.
JBCHA3
0071
0021-9258
269
29613
Crystallographic Studies on Complexes between Retinoids and Plasma Retinol-Binding Protein
1994
US
Proc.Natl.Acad.Sci.USA
PNASA6
0040
0027-8424
89
6644
Crystal Structure Determination at 2.3 Angstroms of Human Transthyretin-3',5'-Dibromo-2',4,4', 6-Tetra-Hydroxyaurone Complex
1992
US
J.Biol.Chem.
JBCHA3
0071
0021-9258
267
353
Mechanism of Molecular Recognition. Structural Aspects of 3,3'-Diiodo-L-Thyronine Binding to Human Serum Transthyretin
1992
UK
Nature
NATUAS
0006
0028-0836
268
115
Protein-DNA and Protein-Hormone Interactions in Prealbumin: A Model of the Thyroid Hormone Nuclear Receptor?
1977
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
88
1
Structure of Human Plasma Prealbumin at 2.5 Angstroms Resolution, a Preliminary Report on the Polypeptide Chain Conformation, Quaternary Structure and Thyroxine Binding
1974
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
1
AREA DETECTOR
1994-11
SIEMENS-NICOLET X100
M
x-ray
1
1.5418
1.0
1.5418
13777.360
TRANSTHYRETIN
2
nat
polymer
300.435
(9cis)-retinoic acid
2
syn
non-polymer
18.015
water
97
nat
water
PREALBUMIN
no
no
GPTGTGESKCPLMVKVLDAVRGSPAINVAVHVFRKAADDTWEPFASGKTSESGELHGLTTEEEFVEGIYKVEIDTKSYWK
ALGISPFHEHAEVVFTANDSGPRRYTIAALLSPYSYSTTAVVTNPKE
GPTGTGESKCPLMVKVLDAVRGSPAINVAVHVFRKAADDTWEPFASGKTSESGELHGLTTEEEFVEGIYKVEIDTKSYWK
ALGISPFHEHAEVVFTANDSGPRRYTIAALLSPYSYSTTAVVTNPKE
A,B
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
human
Homo
sample
9606
Homo sapiens
2.25
45.39
pdbx_database_status
struct_conf
struct_conf_type
repository
Initial release
Version format compliance
Version format compliance
Non-polymer description
Derived calculations
Other
1
0
1995-09-15
1
1
2008-03-03
1
2
2011-07-13
1
3
2016-11-09
1
4
2017-11-29
_pdbx_database_status.process_site
NATIVE TRANSTHYRETIN
Y
BNL
1995-05-12
REL
9CR
(9cis)-retinoic acid
HOH
water
9CR
131
2
9CR
9CR
131
A
9CR
130
2
9CR
9CR
130
B
HOH
201
3
HOH
HOH
201
A
HOH
202
3
HOH
HOH
202
A
HOH
203
3
HOH
HOH
203
A
HOH
204
3
HOH
HOH
204
A
HOH
205
3
HOH
HOH
205
A
HOH
206
3
HOH
HOH
206
A
HOH
207
3
HOH
HOH
207
A
HOH
208
3
HOH
HOH
208
A
HOH
209
3
HOH
HOH
209
A
HOH
210
3
HOH
HOH
210
A
HOH
211
3
HOH
HOH
211
A
HOH
212
3
HOH
HOH
212
A
HOH
213
3
HOH
HOH
213
A
HOH
214
3
HOH
HOH
214
A
HOH
215
3
HOH
HOH
215
A
HOH
216
3
HOH
HOH
216
A
HOH
217
3
HOH
HOH
217
A
HOH
218
3
HOH
HOH
218
A
HOH
219
3
HOH
HOH
219
A
HOH
220
3
HOH
HOH
220
A
HOH
221
3
HOH
HOH
221
A
HOH
223
3
HOH
HOH
223
A
HOH
224
3
HOH
HOH
224
A
HOH
225
3
HOH
HOH
225
A
HOH
226
3
HOH
HOH
226
A
HOH
227
3
HOH
HOH
227
A
HOH
228
3
HOH
HOH
228
A
HOH
229
3
HOH
HOH
229
A
HOH
230
3
HOH
HOH
230
A
HOH
231
3
HOH
HOH
231
A
HOH
232
3
HOH
HOH
232
A
HOH
233
3
HOH
HOH
233
A
HOH
234
3
HOH
HOH
234
A
HOH
267
3
HOH
HOH
267
A
HOH
268
3
HOH
HOH
268
A
HOH
271
3
HOH
HOH
271
A
HOH
272
3
HOH
HOH
272
A
HOH
273
3
HOH
HOH
273
A
HOH
276
3
HOH
HOH
276
A
HOH
278
3
HOH
HOH
278
A
HOH
279
3
HOH
HOH
279
A
HOH
280
3
HOH
HOH
280
A
HOH
282
3
HOH
HOH
282
A
HOH
283
3
HOH
HOH
283
A
HOH
284
3
HOH
HOH
284
A
HOH
285
3
HOH
HOH
285
A
HOH
286
3
HOH
HOH
286
A
HOH
289
3
HOH
HOH
289
A
HOH
290
3
HOH
HOH
290
A
HOH
291
3
HOH
HOH
291
A
HOH
292
3
HOH
HOH
292
A
HOH
295
3
HOH
HOH
295
A
HOH
296
3
HOH
HOH
296
A
HOH
200
3
HOH
HOH
200
B
HOH
222
3
HOH
HOH
222
B
HOH
235
3
HOH
HOH
235
B
HOH
236
3
HOH
HOH
236
B
HOH
237
3
HOH
HOH
237
B
HOH
238
3
HOH
HOH
238
B
HOH
239
3
HOH
HOH
239
B
HOH
240
3
HOH
HOH
240
B
HOH
241
3
HOH
HOH
241
B
HOH
242
3
HOH
HOH
242
B
HOH
243
3
HOH
HOH
243
B
HOH
244
3
HOH
HOH
244
B
HOH
245
3
HOH
HOH
245
B
HOH
246
3
HOH
HOH
246
B
HOH
247
3
HOH
HOH
247
B
HOH
248
3
HOH
HOH
248
B
HOH
249
3
HOH
HOH
249
B
HOH
250
3
HOH
HOH
250
B
HOH
251
3
HOH
HOH
251
B
HOH
252
3
HOH
HOH
252
B
HOH
253
3
HOH
HOH
253
B
HOH
254
3
HOH
HOH
254
B
HOH
255
3
HOH
HOH
255
B
HOH
256
3
HOH
HOH
256
B
HOH
257
3
HOH
HOH
257
B
HOH
258
3
HOH
HOH
258
B
HOH
259
3
HOH
HOH
259
B
HOH
260
3
HOH
HOH
260
B
HOH
261
3
HOH
HOH
261
B
HOH
262
3
HOH
HOH
262
B
HOH
263
3
HOH
HOH
263
B
HOH
264
3
HOH
HOH
264
B
HOH
265
3
HOH
HOH
265
B
HOH
266
3
HOH
HOH
266
B
HOH
269
3
HOH
HOH
269
B
HOH
270
3
HOH
HOH
270
B
HOH
274
3
HOH
HOH
274
B
HOH
275
3
HOH
HOH
275
B
HOH
277
3
HOH
HOH
277
B
HOH
281
3
HOH
HOH
281
B
HOH
287
3
HOH
HOH
287
B
HOH
288
3
HOH
HOH
288
B
HOH
293
3
HOH
HOH
293
B
HOH
294
3
HOH
HOH
294
B
GLY
1
n
1
GLY
1
A
PRO
2
n
2
PRO
2
A
THR
3
n
3
THR
3
A
GLY
4
n
4
GLY
4
A
THR
5
n
5
THR
5
A
GLY
6
n
6
GLY
6
A
GLU
7
n
7
GLU
7
A
SER
8
n
8
SER
8
A
LYS
9
n
9
LYS
9
A
CYS
10
n
10
CYS
10
A
PRO
11
n
11
PRO
11
A
LEU
12
n
12
LEU
12
A
MET
13
n
13
MET
13
A
VAL
14
n
14
VAL
14
A
LYS
15
n
15
LYS
15
A
VAL
16
n
16
VAL
16
A
LEU
17
n
17
LEU
17
A
ASP
18
n
18
ASP
18
A
ALA
19
n
19
ALA
19
A
VAL
20
n
20
VAL
20
A
ARG
21
n
21
ARG
21
A
GLY
22
n
22
GLY
22
A
SER
23
n
23
SER
23
A
PRO
24
n
24
PRO
24
A
ALA
25
n
25
ALA
25
A
ILE
26
n
26
ILE
26
A
ASN
27
n
27
ASN
27
A
VAL
28
n
28
VAL
28
A
ALA
29
n
29
ALA
29
A
VAL
30
n
30
VAL
30
A
HIS
31
n
31
HIS
31
A
VAL
32
n
32
VAL
32
A
PHE
33
n
33
PHE
33
A
ARG
34
n
34
ARG
34
A
LYS
35
n
35
LYS
35
A
ALA
36
n
36
ALA
36
A
ALA
37
n
37
ALA
37
A
ASP
38
n
38
ASP
38
A
ASP
39
n
39
ASP
39
A
THR
40
n
40
THR
40
A
TRP
41
n
41
TRP
41
A
GLU
42
n
42
GLU
42
A
PRO
43
n
43
PRO
43
A
PHE
44
n
44
PHE
44
A
ALA
45
n
45
ALA
45
A
SER
46
n
46
SER
46
A
GLY
47
n
47
GLY
47
A
LYS
48
n
48
LYS
48
A
THR
49
n
49
THR
49
A
SER
50
n
50
SER
50
A
GLU
51
n
51
GLU
51
A
SER
52
n
52
SER
52
A
GLY
53
n
53
GLY
53
A
GLU
54
n
54
GLU
54
A
LEU
55
n
55
LEU
55
A
HIS
56
n
56
HIS
56
A
GLY
57
n
57
GLY
57
A
LEU
58
n
58
LEU
58
A
THR
59
n
59
THR
59
A
THR
60
n
60
THR
60
A
GLU
61
n
61
GLU
61
A
GLU
62
n
62
GLU
62
A
GLU
63
n
63
GLU
63
A
PHE
64
n
64
PHE
64
A
VAL
65
n
65
VAL
65
A
GLU
66
n
66
GLU
66
A
GLY
67
n
67
GLY
67
A
ILE
68
n
68
ILE
68
A
TYR
69
n
69
TYR
69
A
LYS
70
n
70
LYS
70
A
VAL
71
n
71
VAL
71
A
GLU
72
n
72
GLU
72
A
ILE
73
n
73
ILE
73
A
ASP
74
n
74
ASP
74
A
THR
75
n
75
THR
75
A
LYS
76
n
76
LYS
76
A
SER
77
n
77
SER
77
A
TYR
78
n
78
TYR
78
A
TRP
79
n
79
TRP
79
A
LYS
80
n
80
LYS
80
A
ALA
81
n
81
ALA
81
A
LEU
82
n
82
LEU
82
A
GLY
83
n
83
GLY
83
A
ILE
84
n
84
ILE
84
A
SER
85
n
85
SER
85
A
PRO
86
n
86
PRO
86
A
PHE
87
n
87
PHE
87
A
HIS
88
n
88
HIS
88
A
GLU
89
n
89
GLU
89
A
HIS
90
n
90
HIS
90
A
ALA
91
n
91
ALA
91
A
GLU
92
n
92
GLU
92
A
VAL
93
n
93
VAL
93
A
VAL
94
n
94
VAL
94
A
PHE
95
n
95
PHE
95
A
THR
96
n
96
THR
96
A
ALA
97
n
97
ALA
97
A
ASN
98
n
98
ASN
98
A
ASP
99
n
99
ASP
99
A
SER
100
n
100
SER
100
A
GLY
101
n
101
GLY
101
A
PRO
102
n
102
PRO
102
A
ARG
103
n
103
ARG
103
A
ARG
104
n
104
ARG
104
A
TYR
105
n
105
TYR
105
A
THR
106
n
106
THR
106
A
ILE
107
n
107
ILE
107
A
ALA
108
n
108
ALA
108
A
ALA
109
n
109
ALA
109
A
LEU
110
n
110
LEU
110
A
LEU
111
n
111
LEU
111
A
SER
112
n
112
SER
112
A
PRO
113
n
113
PRO
113
A
TYR
114
n
114
TYR
114
A
SER
115
n
115
SER
115
A
TYR
116
n
116
TYR
116
A
SER
117
n
117
SER
117
A
THR
118
n
118
THR
118
A
THR
119
n
119
THR
119
A
ALA
120
n
120
ALA
120
A
VAL
121
n
121
VAL
121
A
VAL
122
n
122
VAL
122
A
THR
123
n
123
THR
123
A
ASN
124
n
124
ASN
124
A
PRO
125
n
125
PRO
125
A
LYS
126
n
126
LYS
126
A
GLU
127
n
127
GLU
127
A
GLY
1
n
1
GLY
1
B
PRO
2
n
2
PRO
2
B
THR
3
n
3
THR
3
B
GLY
4
n
4
GLY
4
B
THR
5
n
5
THR
5
B
GLY
6
n
6
GLY
6
B
GLU
7
n
7
GLU
7
B
SER
8
n
8
SER
8
B
LYS
9
n
9
LYS
9
B
CYS
10
n
10
CYS
10
B
PRO
11
n
11
PRO
11
B
LEU
12
n
12
LEU
12
B
MET
13
n
13
MET
13
B
VAL
14
n
14
VAL
14
B
LYS
15
n
15
LYS
15
B
VAL
16
n
16
VAL
16
B
LEU
17
n
17
LEU
17
B
ASP
18
n
18
ASP
18
B
ALA
19
n
19
ALA
19
B
VAL
20
n
20
VAL
20
B
ARG
21
n
21
ARG
21
B
GLY
22
n
22
GLY
22
B
SER
23
n
23
SER
23
B
PRO
24
n
24
PRO
24
B
ALA
25
n
25
ALA
25
B
ILE
26
n
26
ILE
26
B
ASN
27
n
27
ASN
27
B
VAL
28
n
28
VAL
28
B
ALA
29
n
29
ALA
29
B
VAL
30
n
30
VAL
30
B
HIS
31
n
31
HIS
31
B
VAL
32
n
32
VAL
32
B
PHE
33
n
33
PHE
33
B
ARG
34
n
34
ARG
34
B
LYS
35
n
35
LYS
35
B
ALA
36
n
36
ALA
36
B
ALA
37
n
37
ALA
37
B
ASP
38
n
38
ASP
38
B
ASP
39
n
39
ASP
39
B
THR
40
n
40
THR
40
B
TRP
41
n
41
TRP
41
B
GLU
42
n
42
GLU
42
B
PRO
43
n
43
PRO
43
B
PHE
44
n
44
PHE
44
B
ALA
45
n
45
ALA
45
B
SER
46
n
46
SER
46
B
GLY
47
n
47
GLY
47
B
LYS
48
n
48
LYS
48
B
THR
49
n
49
THR
49
B
SER
50
n
50
SER
50
B
GLU
51
n
51
GLU
51
B
SER
52
n
52
SER
52
B
GLY
53
n
53
GLY
53
B
GLU
54
n
54
GLU
54
B
LEU
55
n
55
LEU
55
B
HIS
56
n
56
HIS
56
B
GLY
57
n
57
GLY
57
B
LEU
58
n
58
LEU
58
B
THR
59
n
59
THR
59
B
THR
60
n
60
THR
60
B
GLU
61
n
61
GLU
61
B
GLU
62
n
62
GLU
62
B
GLU
63
n
63
GLU
63
B
PHE
64
n
64
PHE
64
B
VAL
65
n
65
VAL
65
B
GLU
66
n
66
GLU
66
B
GLY
67
n
67
GLY
67
B
ILE
68
n
68
ILE
68
B
TYR
69
n
69
TYR
69
B
LYS
70
n
70
LYS
70
B
VAL
71
n
71
VAL
71
B
GLU
72
n
72
GLU
72
B
ILE
73
n
73
ILE
73
B
ASP
74
n
74
ASP
74
B
THR
75
n
75
THR
75
B
LYS
76
n
76
LYS
76
B
SER
77
n
77
SER
77
B
TYR
78
n
78
TYR
78
B
TRP
79
n
79
TRP
79
B
LYS
80
n
80
LYS
80
B
ALA
81
n
81
ALA
81
B
LEU
82
n
82
LEU
82
B
GLY
83
n
83
GLY
83
B
ILE
84
n
84
ILE
84
B
SER
85
n
85
SER
85
B
PRO
86
n
86
PRO
86
B
PHE
87
n
87
PHE
87
B
HIS
88
n
88
HIS
88
B
GLU
89
n
89
GLU
89
B
HIS
90
n
90
HIS
90
B
ALA
91
n
91
ALA
91
B
GLU
92
n
92
GLU
92
B
VAL
93
n
93
VAL
93
B
VAL
94
n
94
VAL
94
B
PHE
95
n
95
PHE
95
B
THR
96
n
96
THR
96
B
ALA
97
n
97
ALA
97
B
ASN
98
n
98
ASN
98
B
ASP
99
n
99
ASP
99
B
SER
100
n
100
SER
100
B
GLY
101
n
101
GLY
101
B
PRO
102
n
102
PRO
102
B
ARG
103
n
103
ARG
103
B
ARG
104
n
104
ARG
104
B
TYR
105
n
105
TYR
105
B
THR
106
n
106
THR
106
B
ILE
107
n
107
ILE
107
B
ALA
108
n
108
ALA
108
B
ALA
109
n
109
ALA
109
B
LEU
110
n
110
LEU
110
B
LEU
111
n
111
LEU
111
B
SER
112
n
112
SER
112
B
PRO
113
n
113
PRO
113
B
TYR
114
n
114
TYR
114
B
SER
115
n
115
SER
115
B
TYR
116
n
116
TYR
116
B
SER
117
n
117
SER
117
B
THR
118
n
118
THR
118
B
THR
119
n
119
THR
119
B
ALA
120
n
120
ALA
120
B
VAL
121
n
121
VAL
121
B
VAL
122
n
122
VAL
122
B
THR
123
n
123
THR
123
B
ASN
124
n
124
ASN
124
B
PRO
125
n
125
PRO
125
B
LYS
126
n
126
LYS
126
B
GLU
127
n
127
GLU
127
B
author_and_software_defined_assembly
PISA
2
dimeric
software_defined_assembly
PISA
4
tetrameric
2430
-12
12390
9270
-35
20380
1.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
1_555
x,y,z
identity operation
0.0000000000
0.0000000000
0.0000000000
-1.0000000000
0.0000000000
0.0000000000
0.0000000000
-1.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
2_665
-x+1,-y+1,z
crystal symmetry operation
43.8000000000
86.2200000000
0.0000000000
A
N
LEU
55
A
N
LEU
55
A
O
VAL
14
A
O
VAL
14
A
O
MET
13
A
O
MET
13
A
N
ILE
107
A
N
ILE
107
A
O
ALA
108
A
O
ALA
108
A
N
THR
119
A
N
THR
119
B
N
LEU
55
B
N
LEU
55
B
O
VAL
14
B
O
VAL
14
B
O
MET
13
B
O
MET
13
B
N
ILE
107
B
N
ILE
107
B
O
ALA
108
B
O
ALA
108
B
N
THR
119
B
N
THR
119
A
N
GLU
42
A
N
GLU
42
A
O
ARG
34
A
O
ARG
34
A
O
HIS
31
A
O
HIS
31
A
N
GLU
72
A
N
GLU
72
A
O
VAL
71
A
O
VAL
71
A
N
VAL
93
A
N
VAL
93
A
N
GLY
47
A
N
GLY
47
A
O
VAL
30
A
O
VAL
30
A
O
HIS
31
A
O
HIS
31
A
N
GLU
72
A
N
GLU
72
A
O
VAL
71
A
O
VAL
71
A
N
VAL
93
A
N
VAL
93
B
N
GLU
42
B
N
GLU
42
B
O
ARG
34
B
O
ARG
34
B
O
HIS
31
B
O
HIS
31
B
N
GLU
72
B
N
GLU
72
B
O
VAL
71
B
O
VAL
71
B
N
VAL
93
B
N
VAL
93
B
N
GLY
47
B
N
GLY
47
B
O
VAL
30
B
O
VAL
30
B
O
HIS
31
B
O
HIS
31
B
N
GLU
72
B
N
GLU
72
B
O
VAL
71
B
O
VAL
71
B
N
VAL
93
B
N
VAL
93
1
A
9CR
131
C
9CR
1
B
B
C10
O
9CR
HOH
130
274
0.32
1
B
B
C14
O
9CR
HOH
130
281
0.96
1
B
B
C9
O
9CR
HOH
130
274
1.21
1
B
B
C15
O
9CR
HOH
130
281
1.24
1
A
A
O2
O
9CR
HOH
131
220
1.26
1
B
B
C4
O
9CR
HOH
130
260
1.29
1
B
B
C13
O
9CR
HOH
130
281
1.50
1
B
B
C5
O
9CR
HOH
130
260
1.52
1
B
B
C11
O
9CR
HOH
130
274
1.59
1
B
B
C18
O
9CR
HOH
130
260
1.84
1
B
B
O1
O
9CR
HOH
130
281
1.89
1
B
B
C12
O
9CR
HOH
130
281
1.98
1
B
B
OXT
O
GLU
HOH
127
281
2.01
1
B
ARG
103
0.165
SIDE CHAIN
1
10.11
1.50
119.30
129.41
A
A
A
C
N
CA
GLY
PRO
PRO
1
2
2
Y
1
-12.42
1.80
114.00
101.58
A
A
A
CA
CB
SG
CYS
CYS
CYS
10
10
10
N
1
-5.49
0.90
118.30
112.81
A
A
A
CB
CG
OD2
ASP
ASP
ASP
18
18
18
N
1
-5.50
0.70
120.80
115.30
A
A
A
CB
CG
CD2
PHE
PHE
PHE
33
33
33
N
1
-12.66
2.10
111.80
99.14
A
A
A
CG
CD
NE
ARG
ARG
ARG
34
34
34
N
1
5.31
0.50
120.30
125.61
A
A
A
NE
CZ
NH1
ARG
ARG
ARG
34
34
34
N
1
-6.83
0.50
120.30
113.47
A
A
A
NE
CZ
NH2
ARG
ARG
ARG
34
34
34
N
1
-5.61
0.90
118.30
112.69
A
A
A
CB
CG
OD2
ASP
ASP
ASP
38
38
38
N
1
-8.61
0.90
118.30
109.69
A
A
A
CB
CG
OD2
ASP
ASP
ASP
39
39
39
N
1
9.35
1.50
110.50
119.85
A
A
A
N
CA
CB
SER
SER
SER
46
46
46
N
1
-10.82
1.40
112.40
101.58
A
A
A
CA
CB
CG2
THR
THR
THR
60
60
60
N
1
-7.49
1.20
103.30
95.81
A
A
A
N
CA
CB
PRO
PRO
PRO
86
86
86
N
1
5.84
0.50
120.30
126.14
A
A
A
NE
CZ
NH1
ARG
ARG
ARG
103
103
103
N
1
-5.32
0.50
120.30
114.98
A
A
A
NE
CZ
NH2
ARG
ARG
ARG
103
103
103
N
1
12.15
1.80
110.60
122.75
A
A
A
N
CA
CB
TYR
TYR
TYR
116
116
116
N
1
-7.00
0.60
121.00
114.00
A
A
A
CB
CG
CD2
TYR
TYR
TYR
116
116
116
N
1
-10.84
1.50
110.50
99.66
A
A
A
N
CA
CB
SER
SER
SER
117
117
117
N
1
-18.62
2.30
110.00
91.38
A
A
A
OG1
CB
CG2
THR
THR
THR
119
119
119
N
1
-14.42
2.10
128.40
113.98
B
B
B
C
N
CD
GLY
PRO
PRO
1
2
2
Y
1
13.31
2.10
109.00
122.31
B
B
B
CA
CB
OG1
THR
THR
THR
3
3
3
N
1
-14.19
1.80
114.00
99.81
B
B
B
CA
CB
SG
CYS
CYS
CYS
10
10
10
N
1
-5.55
0.90
118.30
112.75
B
B
B
CB
CG
OD2
ASP
ASP
ASP
18
18
18
N
1
-4.15
0.50
120.30
116.15
B
B
B
NE
CZ
NH2
ARG
ARG
ARG
21
21
21
N
1
8.33
1.20
103.30
111.63
B
B
B
N
CA
CB
PRO
PRO
PRO
24
24
24
N
1
5.43
0.90
118.30
123.73
B
B
B
CB
CG
OD1
ASP
ASP
ASP
38
38
38
N
1
-7.02
0.90
118.30
111.28
B
B
B
CB
CG
OD2
ASP
ASP
ASP
38
38
38
N
1
5.64
0.90
118.30
123.94
B
B
B
CB
CG
OD1
ASP
ASP
ASP
39
39
39
N
1
-5.99
0.90
118.30
112.31
B
B
B
CB
CG
OD2
ASP
ASP
ASP
39
39
39
N
1
-14.00
1.80
110.60
96.60
B
B
B
N
CA
CB
GLU
GLU
GLU
42
42
42
N
1
9.94
1.50
110.50
120.44
B
B
B
N
CA
CB
SER
SER
SER
46
46
46
N
1
3.61
0.60
121.00
124.61
B
B
B
CB
CG
CD2
TYR
TYR
TYR
78
78
78
N
1
-12.71
2.00
110.40
97.69
B
B
B
CB
CA
C
ASN
ASN
ASN
98
98
98
N
1
6.37
0.90
118.30
124.67
B
B
B
CB
CG
OD1
ASP
ASP
ASP
99
99
99
N
1
4.98
0.50
120.30
125.28
B
B
B
NE
CZ
NH1
ARG
ARG
ARG
103
103
103
N
1
-9.44
1.50
110.50
101.06
B
B
B
N
CA
CB
SER
SER
SER
117
117
117
N
1
-13.93
2.10
109.00
95.07
B
B
B
CA
CB
OG1
THR
THR
THR
119
119
119
N
1
A
A
CD
OE2
GLU
GLU
7
7
0.073
0.011
1.252
1.325
N
1
A
A
CD
OE1
GLU
GLU
42
42
0.086
0.011
1.252
1.338
N
1
A
A
CD
OE2
GLU
GLU
61
61
0.072
0.011
1.252
1.324
N
1
A
A
CD
OE2
GLU
GLU
62
62
0.074
0.011
1.252
1.326
N
1
A
A
CD
OE2
GLU
GLU
66
66
0.073
0.011
1.252
1.325
N
1
A
A
CD
OE1
GLU
GLU
89
89
-0.073
0.011
1.252
1.179
N
1
A
A
CD
OE2
GLU
GLU
92
92
0.078
0.011
1.252
1.330
N
1
A
A
CD
OE1
GLU
GLU
127
127
0.067
0.011
1.252
1.319
N
1
A
A
C
OXT
GLU
GLU
127
127
4.278
0.019
1.229
5.507
N
1
B
B
CD
OE1
GLU
GLU
7
7
0.090
0.011
1.252
1.342
N
1
B
B
CD
OE1
GLU
GLU
42
42
0.074
0.011
1.252
1.326
N
1
B
B
CD
OE2
GLU
GLU
51
51
0.074
0.011
1.252
1.326
N
1
B
B
CD
OE2
GLU
GLU
62
62
0.072
0.011
1.252
1.324
N
1
B
B
CD
OE1
GLU
GLU
63
63
0.085
0.011
1.252
1.337
N
1
B
B
CD
OE1
GLU
GLU
127
127
0.081
0.011
1.252
1.333
N
1
B
B
C
OXT
GLU
GLU
127
127
1.509
0.019
1.229
2.738
N
1
B
B
C17
C18
9CR
9CR
130
130
0.39
1_555
2_665
1
A
A
C9
C9
9CR
9CR
131
131
0.39
1_555
2_665
1
B
B
C8
C8
9CR
9CR
130
130
0.46
1_555
2_665
1
B
B
C2
O
9CR
HOH
130
260
0.61
1_555
2_665
1
B
B
C3
C4
9CR
9CR
130
130
0.71
1_555
2_665
1
A
A
C1
C18
9CR
9CR
131
131
0.80
1_555
2_665
1
A
A
C4
C4
9CR
9CR
131
131
0.81
1_555
2_665
1
A
A
C3
C4
9CR
9CR
131
131
0.84
1_555
2_665
1
A
A
C10
C19
9CR
9CR
131
131
0.85
1_555
2_665
1
B
B
C9
C9
9CR
9CR
130
130
0.97
1_555
2_665
1
A
A
C17
C18
9CR
9CR
131
131
1.09
1_555
2_665
1
A
A
C9
C10
9CR
9CR
131
131
1.12
1_555
2_665
1
B
B
C3
O
9CR
HOH
130
260
1.19
1_555
2_665
1
B
B
C19
O
9CR
HOH
130
274
1.23
1_555
2_665
1
A
A
C5
C5
9CR
9CR
131
131
1.25
1_555
2_665
1
A
A
C5
C6
9CR
9CR
131
131
1.26
1_555
2_665
1
B
B
C10
C19
9CR
9CR
130
130
1.36
1_555
2_665
1
B
B
C1
C18
9CR
9CR
130
130
1.37
1_555
2_665
1
B
B
C1
O
9CR
HOH
130
260
1.38
1_555
2_665
1
A
A
C8
C9
9CR
9CR
131
131
1.41
1_555
2_665
1
B
B
C3
C3
9CR
9CR
130
130
1.43
1_555
2_665
1
B
B
C9
C10
9CR
9CR
130
130
1.45
1_555
2_665
1
A
A
C7
C8
9CR
9CR
131
131
1.51
1_555
2_665
1
B
B
C7
C8
9CR
9CR
130
130
1.56
1_555
2_665
1
B
B
C8
C9
9CR
9CR
130
130
1.58
1_555
2_665
1
B
B
C6
C6
9CR
9CR
130
130
1.58
1_555
2_665
1
A
A
C6
C6
9CR
9CR
131
131
1.61
1_555
2_665
1
A
A
C6
C18
9CR
9CR
131
131
1.62
1_555
2_665
1
B
B
O
O
HOH
HOH
274
274
1.69
1_555
2_665
1
B
B
C1
C5
9CR
9CR
130
130
1.70
1_555
2_665
1
B
B
C5
C6
9CR
9CR
130
130
1.74
1_555
2_665
1
B
B
C4
C4
9CR
9CR
130
130
1.74
1_555
2_665
1
B
B
C2
C4
9CR
9CR
130
130
1.75
1_555
2_665
1
B
B
C5
C17
9CR
9CR
130
130
1.82
1_555
2_665
1
A
A
C4
C5
9CR
9CR
131
131
1.82
1_555
2_665
1
A
A
C2
C18
9CR
9CR
131
131
1.82
1_555
2_665
1
A
A
C9
C19
9CR
9CR
131
131
1.90
1_555
2_665
1
A
A
C1
C5
9CR
9CR
131
131
1.90
1_555
2_665
1
A
A
C11
C19
9CR
9CR
131
131
1.92
1_555
2_665
1
A
A
C7
C7
9CR
9CR
131
131
1.94
1_555
2_665
1
A
A
C10
C10
9CR
9CR
131
131
1.95
1_555
2_665
1
A
A
C3
C5
9CR
9CR
131
131
1.95
1_555
2_665
1
A
A
C2
C4
9CR
9CR
131
131
1.98
1_555
2_665
1
B
B
C3
C5
9CR
9CR
130
130
2.01
1_555
2_665
1
B
B
C7
C7
9CR
9CR
130
130
2.05
1_555
2_665
1
B
B
C2
C5
9CR
9CR
130
130
2.12
1_555
2_665
1
B
B
C5
C5
9CR
9CR
130
130
2.12
1_555
2_665
1
B
B
C2
C18
9CR
9CR
130
130
2.17
1_555
2_665
1
B
B
C9
C19
9CR
9CR
130
130
2.18
1_555
2_665
1
A
A
C19
C20
9CR
9CR
131
131
2.18
1_555
2_665
1
A
PRO
2
-23.70
176.63
1
A
LYS
9
-159.18
29.54
1
A
CYS
10
39.39
84.80
1
A
ASP
38
-82.56
38.91
1
A
HIS
90
-170.50
-179.95
1
A
PRO
125
-54.32
-174.23
1
A
LYS
126
130.73
147.97
1
B
PRO
2
-114.66
-151.97
1
B
THR
3
-175.23
-157.67
1
B
THR
5
-61.54
53.74
1
B
SER
8
-130.88
-137.53
1
B
CYS
10
67.77
74.02
1
B
PHE
44
-127.27
-51.00
1
B
PRO
125
-84.70
-156.72
THE ENTRY CONTAINS RETINOIC ACID MOLECULES IN BOTH BINDING
SITES. THE OCCUPANCIES OF SITES WERE NOT REFINED, SINCE
THE ELECTRON DENSITY REFLECTS THE PRESENCE OF THE
CRYSTALLOGRAPHIC TWO-FOLD AXIS. IN THE FUNCTIONAL
TETRAMER THE RETINOIC ACID MOLECULES ARE DISORDERED DUE TO
THE CRYSTALLOGRAPHIC TWO-FOLD RUNNING THROUGH THE BINDING
SITE.
RESIDUES 1 - 9 OF BOTH CHAINS, AS WELL AS 126 - 127 OF
CHAIN B, ARE ILL-DEFINED IN THE ELECTRON DENSITY. THEY
HAVE BEEN INCLUDED, BUT THE TEMPERATURE FACTORS ARE VERY
HIGH.
0.196
1.8
9.0
20172
85.
1
0.0
1.8
9.0
97
2085
44
0
1944
0.016
3.8
19.6
0.001
1TYR
0.07
1
3.
refinement
TNT
data reduction
SAINT
TRANSTHYRETIN, RETINOIC ACID
TRANSTHYRETIN COMPLEX WITH RETINOIC ACID
1
N
N
1
N
N
2
N
N
2
N
N
3
N
N
3
N
N
THE ENTIRE PROTEIN IS A TETRAMER, BUT THE ASYMMETRIC UNIT
CONTAINS A DIMER. THE TWO DIMERS ARE RELATED BY A TWO FODL
AXIS, WHILST THE TWO INDEPENDENT MONOMERS IN THE DIMER ARE
RELATED BY A PSEUDO TWO-FOLD AXIS. THE LIGAND IS BOUND IN
THE INTERNAL CHANNEL, MADE UP BY THE TWO INDEPENDENT
MONOMERS. A CRYSTALLOGRAPHIC TWO-FOLD AXIS RUNS THROUGH
THE CHANNEL, MAKING IT SYMMETRIC. MOREOVER, PERPENDICULAR
TO THE PREVIOUS ONE, THERE IS THE PSEUDO TWO-FOLD, WHICH
MAKES THE TWO HALFS OF THE CHANNEL NEARLY IDENTICAL. AS A
RESULT OF ALL THAT, TWO INDEPENDENT BINDING SITES ARE
PRESENT PER TERAMER, BUT, SINCE THE LIGAND IN THIS CASE
DOES NOT PRESENT ANY SYMMETRY, EACH LIGAND IN THE CRYSTAL
APPEARS TO BE SUPERIMPOSED TO ITS SYMMETRY-RELATED. IN
CONCLUSION, FOUR RETINOIC ACID BOUND MOLECULES ARE SEEN,
EACH PAIRS SUPERIMPOSED. IN ADDITION, SOLUTION DATA
STRONGLY SUGGEST THAT ONLY ONE LIGAND MOLECULE IS BOUND TO
A TTR TETRAMER. IN CONCLUSION, THE COORDINATES OF TWO 9CR
MOLECULES ARE GIVEN, WHICH APPLYING THE CRYSTALLOGRAPHIC
SYMMETRY, BECOMES FOUR, BUT ONLY ONE MUST BE CONSIDERED
STATISTICALLY PRESENT IN THE TETRAMER.
A
THR
75
A
THR
75
HELX_P
A
GLY
83
A
GLY
83
1
AA
9
B
THR
75
B
THR
75
HELX_P
B
GLY
83
B
GLY
83
1
AB
9
covale
2.031
B
GLU
127
B
OXT
GLU
127
1_555
B
9CR
130
D
O1
9CR
1_555
RETINOL-BINDING
RETINOL-BINDING PROTEIN, RETINOL-BINDING
TTHY_HUMAN
UNP
1
1
P02766
MASHRLLLLCLAGLVFVSEAGPTGTGESKCPLMVKVLDAVRGSPAINVAVHVFRKAADDTWEPFASGKTSESGELHGLTT
EEEFVEGIYKVEIDTKSYWKALGISPFHEHAEVVFTANDSGPRRYTIAALLSPYSYSTTAVVTNPKE
21
147
1TYR
1
127
P02766
A
1
1
127
21
147
1TYR
1
127
P02766
B
1
1
127
4
4
4
4
4
4
anti-parallel
parallel
anti-parallel
anti-parallel
parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
A
GLY
53
A
GLY
53
A
LEU
55
A
LEU
55
A
PRO
11
A
PRO
11
A
ALA
19
A
ALA
19
A
TYR
105
A
TYR
105
A
SER
112
A
SER
112
A
TYR
114
A
TYR
114
A
VAL
121
A
VAL
121
B
GLY
53
B
GLY
53
B
LEU
55
B
LEU
55
B
PRO
11
B
PRO
11
B
ALA
19
B
ALA
19
B
TYR
105
B
TYR
105
B
SER
112
B
SER
112
B
TYR
114
B
TYR
114
B
VAL
121
B
VAL
121
A
GLU
42
A
GLU
42
A
GLU
42
A
GLU
42
A
VAL
28
A
VAL
28
A
LYS
35
A
LYS
35
A
GLY
67
A
GLY
67
A
ASP
74
A
ASP
74
A
ALA
91
A
ALA
91
A
ALA
97
A
ALA
97
A
ALA
45
A
ALA
45
A
THR
49
A
THR
49
A
VAL
28
A
VAL
28
A
LYS
35
A
LYS
35
A
GLY
67
A
GLY
67
A
ASP
74
A
ASP
74
A
ALA
91
A
ALA
91
A
ALA
97
A
ALA
97
B
GLU
42
B
GLU
42
B
GLU
42
B
GLU
42
B
VAL
28
B
VAL
28
B
LYS
35
B
LYS
35
B
GLY
67
B
GLY
67
B
ASP
74
B
ASP
74
B
ALA
91
B
ALA
91
B
ALA
97
B
ALA
97
B
ALA
45
B
ALA
45
B
THR
49
B
THR
49
B
VAL
28
B
VAL
28
B
LYS
35
B
LYS
35
B
GLY
67
B
GLY
67
B
ASP
74
B
ASP
74
B
ALA
91
B
ALA
91
B
ALA
97
B
ALA
97
Unknown
13
Unknown
13
BINDING SITE FOR RESIDUE 9CR B 130
Software
14
BINDING SITE FOR RESIDUE 9CR A 131
Software
14
A
LYS
15
A
LYS
15
13
1_555
A
VAL
16
A
VAL
16
13
1_555
A
LEU
17
A
LEU
17
13
1_555
A
THR
106
A
THR
106
13
1_555
A
ILE
107
A
ILE
107
13
1_555
A
ALA
108
A
ALA
108
13
1_555
A
ALA
109
A
ALA
109
13
1_555
A
LEU
110
A
LEU
110
13
1_555
A
SER
117
A
SER
117
13
1_555
A
THR
118
A
THR
118
13
1_555
A
THR
119
A
THR
119
13
1_555
A
ALA
120
A
ALA
120
13
1_555
A
VAL
121
A
VAL
121
13
1_555
B
LYS
15
B
LYS
15
13
1_555
B
VAL
16
B
VAL
16
13
1_555
B
LEU
17
B
LEU
17
13
1_555
B
THR
106
B
THR
106
13
1_555
B
ILE
107
B
ILE
107
13
1_555
B
ALA
108
B
ALA
108
13
1_555
B
ALA
109
B
ALA
109
13
1_555
B
LEU
110
B
LEU
110
13
1_555
B
SER
117
B
SER
117
13
1_555
B
THR
118
B
THR
118
13
1_555
B
THR
119
B
THR
119
13
1_555
B
ALA
120
B
ALA
120
13
1_555
B
VAL
121
B
VAL
121
13
1_555
B
LYS
15
B
LYS
15
14
2_665
B
LEU
17
B
LEU
17
14
1_555
B
LEU
17
B
LEU
17
14
2_665
B
ALA
108
B
ALA
108
14
2_665
B
LEU
110
B
LEU
110
14
1_555
B
SER
117
B
SER
117
14
2_665
B
THR
119
B
THR
119
14
2_665
B
VAL
121
B
VAL
121
14
1_555
B
GLU
127
B
GLU
127
14
1_555
B
HOH
260
F
HOH
14
2_665
B
HOH
260
F
HOH
14
1_555
B
HOH
274
F
HOH
14
2_665
B
HOH
274
F
HOH
14
1_555
B
HOH
281
F
HOH
14
1_555
A
LYS
15
A
LYS
15
14
1_555
A
LEU
17
A
LEU
17
14
2_665
A
LEU
17
A
LEU
17
14
1_555
A
THR
106
A
THR
106
14
2_665
A
ALA
108
A
ALA
108
14
2_665
A
ALA
108
A
ALA
108
14
1_555
A
ALA
109
A
ALA
109
14
1_555
A
LEU
110
A
LEU
110
14
1_555
A
LEU
110
A
LEU
110
14
2_665
A
SER
117
A
SER
117
14
1_555
A
SER
117
A
SER
117
14
2_665
A
THR
119
A
THR
119
14
1_555
A
VAL
121
A
VAL
121
14
2_665
A
HOH
220
E
HOH
14
1_555
18
P 21 21 2