1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
Boehm, M.K.
Perkins, S.J.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
1
90.00
90.00
90.00
1.000
1.000
1.000
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
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
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
NE
Febs Lett.
FEBLAL
0165
0014-5793
475
11
16
10.1016/s0014-5793(00)01612-4
10854848
Structural models for carcinoembryonic antigen and its complex with the single-chain Fv antibody molecule MFE23.
2000
UK
Biochem.J.
BIJOAK
0043
0264-6021
346
519
10677374
Crystal Structure of the Anti-(Carcinoembryonic Antigen) Single-Chain Fv Antibody Mfe-23 and a Model for Antigen Binding Based on Intermolecular Contacts.
2000
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
259
718
8683578
Extended Glycoprotein Structure of the Seven Domains in Human Carcinoembryonic Antigen by X-Ray and Neutron Solution Scattering and an Automated Curve Fitting Procedure: Implications for Cellular Adhesion.
1996
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
70620.727
CARCINOEMBRYONIC ANTIGEN
1
nat
polymer
no
no
KLTIESTPFNVAEGKEVLLLVHNLPQHLFGYSWYKGERVDGNRQIIGYVIGTQQATPGPAYSGREIIYPNASLLIQNIIQ
NDTGFYTLHVIKSDLVNEEATGQFRVYPELPKPSISSNNSKPVEDKDAVAFTCEPETQDATYLWWVNNQSLPVSPRLQLS
NGNRTLTLFNVTRNDTASYKCETQNPVSARRSDSVILNVLYGPDAPTISPLNTSYRSGENLNLSCHAASNPPAQYSWFVN
GTFQQSTQELFIPNITVNNSGSYTCQAHNSDTGLNRTTVTTITVYAEPPKPFITSNNSNPVEDEDAVALTCEPEIQNTTY
LWWVNNQSLPVSPRLQLSNDNRTLTLLSVTRNDVGPYECGIQNELSVDHSDPVILNVLYGPDDPTISPSYTYYRPGVNLS
LSCHAASNPPAQYSWLIDGNIQQHTQELFISNITEKNSGLYTCQANNSASGHSRTTVKTITVSAELPKPSISSNNSKPVE
DKDAVAFTCEPEAQNTTYLWWVNGQSLPVSPRLQLSNGNRTLTLFNVTRNDARAYVCGIQNSVSANRSDPVTLDVLYGPD
TPIISPPDSSYLSGANLNLSCHSASNPSPQYSWRINGIPQQHTQVLFIAKITPNNNGTYACFVSNLATGRNNSIVKSITV
SA
KLTIESTPFNVAEGKEVLLLVHNLPQHLFGYSWYKGERVDGNRQIIGYVIGTQQATPGPAYSGREIIYPNASLLIQNIIQ
NDTGFYTLHVIKSDLVNEEATGQFRVYPELPKPSISSNNSKPVEDKDAVAFTCEPETQDATYLWWVNNQSLPVSPRLQLS
NGNRTLTLFNVTRNDTASYKCETQNPVSARRSDSVILNVLYGPDAPTISPLNTSYRSGENLNLSCHAASNPPAQYSWFVN
GTFQQSTQELFIPNITVNNSGSYTCQAHNSDTGLNRTTVTTITVYAEPPKPFITSNNSNPVEDEDAVALTCEPEIQNTTY
LWWVNNQSLPVSPRLQLSNDNRTLTLLSVTRNDVGPYECGIQNELSVDHSDPVILNVLYGPDDPTISPSYTYYRPGVNLS
LSCHAASNPPAQYSWLIDGNIQQHTQELFISNITEKNSGLYTCQANNSASGHSRTTVKTITVSAELPKPSISSNNSKPVE
DKDAVAFTCEPEAQNTTYLWWVNGQSLPVSPRLQLSNGNRTLTLFNVTRNDARAYVCGIQNSVSANRSDPVTLDVLYGPD
TPIISPPDSSYLSGANLNLSCHSASNPSPQYSWRINGIPQQHTQVLFIAKITPNNNGTYACFVSNLATGRNNSIVKSITV
SA
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
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
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
9606
HOMO SAPIENS
citation
repository
Initial release
Database references
Version format compliance
Data collection
Database references
1
0
2000-07-04
1
1
2011-12-28
1
2
2019-10-09
_citation.journal_abbrev
_citation.page_last
_citation.pdbx_database_id_DOI
_citation.title
CA ATOMS ONLY
PDBE
Y
PDBE
2000-03-11
REL
THE CARCINOEMBRYONIC ANTIGEN PRECURSOR CONTAINS A
34-RESIDUE N-TERMINAL SIGNAL PEPTIDE AND A 26-RESIDUE
C-TERMINAL HYDROPHOBIC PEPTIDE, BOTH OF WHICH ARE
POST-TRANSLATIONALLY CLEAVED.
LYS
1
n
1
LYS
1
A
LEU
2
n
2
LEU
2
A
THR
3
n
3
THR
3
A
ILE
4
n
4
ILE
4
A
GLU
5
n
5
GLU
5
A
SER
6
n
6
SER
6
A
THR
7
n
7
THR
7
A
PRO
8
n
8
PRO
8
A
PHE
9
n
9
PHE
9
A
ASN
10
n
10
ASN
10
A
VAL
11
n
11
VAL
11
A
ALA
12
n
12
ALA
12
A
GLU
13
n
13
GLU
13
A
GLY
14
n
14
GLY
14
A
LYS
15
n
15
LYS
15
A
GLU
16
n
16
GLU
16
A
VAL
17
n
17
VAL
17
A
LEU
18
n
18
LEU
18
A
LEU
19
n
19
LEU
19
A
LEU
20
n
20
LEU
20
A
VAL
21
n
21
VAL
21
A
HIS
22
n
22
HIS
22
A
ASN
23
n
23
ASN
23
A
LEU
24
n
24
LEU
24
A
PRO
25
n
25
PRO
25
A
GLN
26
n
26
GLN
26
A
HIS
27
n
27
HIS
27
A
LEU
28
n
28
LEU
28
A
PHE
29
n
29
PHE
29
A
GLY
30
n
30
GLY
30
A
TYR
31
n
31
TYR
31
A
SER
32
n
32
SER
32
A
TRP
33
n
33
TRP
33
A
TYR
34
n
34
TYR
34
A
LYS
35
n
35
LYS
35
A
GLY
36
n
36
GLY
36
A
GLU
37
n
37
GLU
37
A
ARG
38
n
38
ARG
38
A
VAL
39
n
39
VAL
39
A
ASP
40
n
40
ASP
40
A
GLY
41
n
41
GLY
41
A
ASN
42
n
42
ASN
42
A
ARG
43
n
43
ARG
43
A
GLN
44
n
44
GLN
44
A
ILE
45
n
45
ILE
45
A
ILE
46
n
46
ILE
46
A
GLY
47
n
47
GLY
47
A
TYR
48
n
48
TYR
48
A
VAL
49
n
49
VAL
49
A
ILE
50
n
50
ILE
50
A
GLY
51
n
51
GLY
51
A
THR
52
n
52
THR
52
A
GLN
53
n
53
GLN
53
A
GLN
54
n
54
GLN
54
A
ALA
55
n
55
ALA
55
A
THR
56
n
56
THR
56
A
PRO
57
n
57
PRO
57
A
GLY
58
n
58
GLY
58
A
PRO
59
n
59
PRO
59
A
ALA
60
n
60
ALA
60
A
TYR
61
n
61
TYR
61
A
SER
62
n
62
SER
62
A
GLY
63
n
63
GLY
63
A
ARG
64
n
64
ARG
64
A
GLU
65
n
65
GLU
65
A
ILE
66
n
66
ILE
66
A
ILE
67
n
67
ILE
67
A
TYR
68
n
68
TYR
68
A
PRO
69
n
69
PRO
69
A
ASN
70
n
70
ASN
70
A
ALA
71
n
71
ALA
71
A
SER
72
n
72
SER
72
A
LEU
73
n
73
LEU
73
A
LEU
74
n
74
LEU
74
A
ILE
75
n
75
ILE
75
A
GLN
76
n
76
GLN
76
A
ASN
77
n
77
ASN
77
A
ILE
78
n
78
ILE
78
A
ILE
79
n
79
ILE
79
A
GLN
80
n
80
GLN
80
A
ASN
81
n
81
ASN
81
A
ASP
82
n
82
ASP
82
A
THR
83
n
83
THR
83
A
GLY
84
n
84
GLY
84
A
PHE
85
n
85
PHE
85
A
TYR
86
n
86
TYR
86
A
THR
87
n
87
THR
87
A
LEU
88
n
88
LEU
88
A
HIS
89
n
89
HIS
89
A
VAL
90
n
90
VAL
90
A
ILE
91
n
91
ILE
91
A
LYS
92
n
92
LYS
92
A
SER
93
n
93
SER
93
A
ASP
94
n
94
ASP
94
A
LEU
95
n
95
LEU
95
A
VAL
96
n
96
VAL
96
A
ASN
97
n
97
ASN
97
A
GLU
98
n
98
GLU
98
A
GLU
99
n
99
GLU
99
A
ALA
100
n
100
ALA
100
A
THR
101
n
101
THR
101
A
GLY
102
n
102
GLY
102
A
GLN
103
n
103
GLN
103
A
PHE
104
n
104
PHE
104
A
ARG
105
n
105
ARG
105
A
VAL
106
n
106
VAL
106
A
TYR
107
n
107
TYR
107
A
PRO
108
n
108
PRO
108
A
GLU
109
n
109
GLU
109
A
LEU
110
n
110
LEU
110
A
PRO
111
n
111
PRO
111
A
LYS
112
n
112
LYS
112
A
PRO
113
n
113
PRO
113
A
SER
114
n
114
SER
114
A
ILE
115
n
115
ILE
115
A
SER
116
n
116
SER
116
A
SER
117
n
117
SER
117
A
ASN
118
n
118
ASN
118
A
ASN
119
n
119
ASN
119
A
SER
120
n
120
SER
120
A
LYS
121
n
121
LYS
121
A
PRO
122
n
122
PRO
122
A
VAL
123
n
123
VAL
123
A
GLU
124
n
124
GLU
124
A
ASP
125
n
125
ASP
125
A
LYS
126
n
126
LYS
126
A
ASP
127
n
127
ASP
127
A
ALA
128
n
128
ALA
128
A
VAL
129
n
129
VAL
129
A
ALA
130
n
130
ALA
130
A
PHE
131
n
131
PHE
131
A
THR
132
n
132
THR
132
A
CYS
133
n
133
CYS
133
A
GLU
134
n
134
GLU
134
A
PRO
135
n
135
PRO
135
A
GLU
136
n
136
GLU
136
A
THR
137
n
137
THR
137
A
GLN
138
n
138
GLN
138
A
ASP
139
n
139
ASP
139
A
ALA
140
n
140
ALA
140
A
THR
141
n
141
THR
141
A
TYR
142
n
142
TYR
142
A
LEU
143
n
143
LEU
143
A
TRP
144
n
144
TRP
144
A
TRP
145
n
145
TRP
145
A
VAL
146
n
146
VAL
146
A
ASN
147
n
147
ASN
147
A
ASN
148
n
148
ASN
148
A
GLN
149
n
149
GLN
149
A
SER
150
n
150
SER
150
A
LEU
151
n
151
LEU
151
A
PRO
152
n
152
PRO
152
A
VAL
153
n
153
VAL
153
A
SER
154
n
154
SER
154
A
PRO
155
n
155
PRO
155
A
ARG
156
n
156
ARG
156
A
LEU
157
n
157
LEU
157
A
GLN
158
n
158
GLN
158
A
LEU
159
n
159
LEU
159
A
SER
160
n
160
SER
160
A
ASN
161
n
161
ASN
161
A
GLY
162
n
162
GLY
162
A
ASN
163
n
163
ASN
163
A
ARG
164
n
164
ARG
164
A
THR
165
n
165
THR
165
A
LEU
166
n
166
LEU
166
A
THR
167
n
167
THR
167
A
LEU
168
n
168
LEU
168
A
PHE
169
n
169
PHE
169
A
ASN
170
n
170
ASN
170
A
VAL
171
n
171
VAL
171
A
THR
172
n
172
THR
172
A
ARG
173
n
173
ARG
173
A
ASN
174
n
174
ASN
174
A
ASP
175
n
175
ASP
175
A
THR
176
n
176
THR
176
A
ALA
177
n
177
ALA
177
A
SER
178
n
178
SER
178
A
TYR
179
n
179
TYR
179
A
LYS
180
n
180
LYS
180
A
CYS
181
n
181
CYS
181
A
GLU
182
n
182
GLU
182
A
THR
183
n
183
THR
183
A
GLN
184
n
184
GLN
184
A
ASN
185
n
185
ASN
185
A
PRO
186
n
186
PRO
186
A
VAL
187
n
187
VAL
187
A
SER
188
n
188
SER
188
A
ALA
189
n
189
ALA
189
A
ARG
190
n
190
ARG
190
A
ARG
191
n
191
ARG
191
A
SER
192
n
192
SER
192
A
ASP
193
n
193
ASP
193
A
SER
194
n
194
SER
194
A
VAL
195
n
195
VAL
195
A
ILE
196
n
196
ILE
196
A
LEU
197
n
197
LEU
197
A
ASN
198
n
198
ASN
198
A
VAL
199
n
199
VAL
199
A
LEU
200
n
200
LEU
200
A
TYR
201
n
201
TYR
201
A
GLY
202
n
202
GLY
202
A
PRO
203
n
203
PRO
203
A
ASP
204
n
204
ASP
204
A
ALA
205
n
205
ALA
205
A
PRO
206
n
206
PRO
206
A
THR
207
n
207
THR
207
A
ILE
208
n
208
ILE
208
A
SER
209
n
209
SER
209
A
PRO
210
n
210
PRO
210
A
LEU
211
n
211
LEU
211
A
ASN
212
n
212
ASN
212
A
THR
213
n
213
THR
213
A
SER
214
n
214
SER
214
A
TYR
215
n
215
TYR
215
A
ARG
216
n
216
ARG
216
A
SER
217
n
217
SER
217
A
GLY
218
n
218
GLY
218
A
GLU
219
n
219
GLU
219
A
ASN
220
n
220
ASN
220
A
LEU
221
n
221
LEU
221
A
ASN
222
n
222
ASN
222
A
LEU
223
n
223
LEU
223
A
SER
224
n
224
SER
224
A
CYS
225
n
225
CYS
225
A
HIS
226
n
226
HIS
226
A
ALA
227
n
227
ALA
227
A
ALA
228
n
228
ALA
228
A
SER
229
n
229
SER
229
A
ASN
230
n
230
ASN
230
A
PRO
231
n
231
PRO
231
A
PRO
232
n
232
PRO
232
A
ALA
233
n
233
ALA
233
A
GLN
234
n
234
GLN
234
A
TYR
235
n
235
TYR
235
A
SER
236
n
236
SER
236
A
TRP
237
n
237
TRP
237
A
PHE
238
n
238
PHE
238
A
VAL
239
n
239
VAL
239
A
ASN
240
n
240
ASN
240
A
GLY
241
n
241
GLY
241
A
THR
242
n
242
THR
242
A
PHE
243
n
243
PHE
243
A
GLN
244
n
244
GLN
244
A
GLN
245
n
245
GLN
245
A
SER
246
n
246
SER
246
A
THR
247
n
247
THR
247
A
GLN
248
n
248
GLN
248
A
GLU
249
n
249
GLU
249
A
LEU
250
n
250
LEU
250
A
PHE
251
n
251
PHE
251
A
ILE
252
n
252
ILE
252
A
PRO
253
n
253
PRO
253
A
ASN
254
n
254
ASN
254
A
ILE
255
n
255
ILE
255
A
THR
256
n
256
THR
256
A
VAL
257
n
257
VAL
257
A
ASN
258
n
258
ASN
258
A
ASN
259
n
259
ASN
259
A
SER
260
n
260
SER
260
A
GLY
261
n
261
GLY
261
A
SER
262
n
262
SER
262
A
TYR
263
n
263
TYR
263
A
THR
264
n
264
THR
264
A
CYS
265
n
265
CYS
265
A
GLN
266
n
266
GLN
266
A
ALA
267
n
267
ALA
267
A
HIS
268
n
268
HIS
268
A
ASN
269
n
269
ASN
269
A
SER
270
n
270
SER
270
A
ASP
271
n
271
ASP
271
A
THR
272
n
272
THR
272
A
GLY
273
n
273
GLY
273
A
LEU
274
n
274
LEU
274
A
ASN
275
n
275
ASN
275
A
ARG
276
n
276
ARG
276
A
THR
277
n
277
THR
277
A
THR
278
n
278
THR
278
A
VAL
279
n
279
VAL
279
A
THR
280
n
280
THR
280
A
THR
281
n
281
THR
281
A
ILE
282
n
282
ILE
282
A
THR
283
n
283
THR
283
A
VAL
284
n
284
VAL
284
A
TYR
285
n
285
TYR
285
A
ALA
286
n
286
ALA
286
A
GLU
287
n
287
GLU
287
A
PRO
288
n
288
PRO
288
A
PRO
289
n
289
PRO
289
A
LYS
290
n
290
LYS
290
A
PRO
291
n
291
PRO
291
A
PHE
292
n
292
PHE
292
A
ILE
293
n
293
ILE
293
A
THR
294
n
294
THR
294
A
SER
295
n
295
SER
295
A
ASN
296
n
296
ASN
296
A
ASN
297
n
297
ASN
297
A
SER
298
n
298
SER
298
A
ASN
299
n
299
ASN
299
A
PRO
300
n
300
PRO
300
A
VAL
301
n
301
VAL
301
A
GLU
302
n
302
GLU
302
A
ASP
303
n
303
ASP
303
A
GLU
304
n
304
GLU
304
A
ASP
305
n
305
ASP
305
A
ALA
306
n
306
ALA
306
A
VAL
307
n
307
VAL
307
A
ALA
308
n
308
ALA
308
A
LEU
309
n
309
LEU
309
A
THR
310
n
310
THR
310
A
CYS
311
n
311
CYS
311
A
GLU
312
n
312
GLU
312
A
PRO
313
n
313
PRO
313
A
GLU
314
n
314
GLU
314
A
ILE
315
n
315
ILE
315
A
GLN
316
n
316
GLN
316
A
ASN
317
n
317
ASN
317
A
THR
318
n
318
THR
318
A
THR
319
n
319
THR
319
A
TYR
320
n
320
TYR
320
A
LEU
321
n
321
LEU
321
A
TRP
322
n
322
TRP
322
A
TRP
323
n
323
TRP
323
A
VAL
324
n
324
VAL
324
A
ASN
325
n
325
ASN
325
A
ASN
326
n
326
ASN
326
A
GLN
327
n
327
GLN
327
A
SER
328
n
328
SER
328
A
LEU
329
n
329
LEU
329
A
PRO
330
n
330
PRO
330
A
VAL
331
n
331
VAL
331
A
SER
332
n
332
SER
332
A
PRO
333
n
333
PRO
333
A
ARG
334
n
334
ARG
334
A
LEU
335
n
335
LEU
335
A
GLN
336
n
336
GLN
336
A
LEU
337
n
337
LEU
337
A
SER
338
n
338
SER
338
A
ASN
339
n
339
ASN
339
A
ASP
340
n
340
ASP
340
A
ASN
341
n
341
ASN
341
A
ARG
342
n
342
ARG
342
A
THR
343
n
343
THR
343
A
LEU
344
n
344
LEU
344
A
THR
345
n
345
THR
345
A
LEU
346
n
346
LEU
346
A
LEU
347
n
347
LEU
347
A
SER
348
n
348
SER
348
A
VAL
349
n
349
VAL
349
A
THR
350
n
350
THR
350
A
ARG
351
n
351
ARG
351
A
ASN
352
n
352
ASN
352
A
ASP
353
n
353
ASP
353
A
VAL
354
n
354
VAL
354
A
GLY
355
n
355
GLY
355
A
PRO
356
n
356
PRO
356
A
TYR
357
n
357
TYR
357
A
GLU
358
n
358
GLU
358
A
CYS
359
n
359
CYS
359
A
GLY
360
n
360
GLY
360
A
ILE
361
n
361
ILE
361
A
GLN
362
n
362
GLN
362
A
ASN
363
n
363
ASN
363
A
GLU
364
n
364
GLU
364
A
LEU
365
n
365
LEU
365
A
SER
366
n
366
SER
366
A
VAL
367
n
367
VAL
367
A
ASP
368
n
368
ASP
368
A
HIS
369
n
369
HIS
369
A
SER
370
n
370
SER
370
A
ASP
371
n
371
ASP
371
A
PRO
372
n
372
PRO
372
A
VAL
373
n
373
VAL
373
A
ILE
374
n
374
ILE
374
A
LEU
375
n
375
LEU
375
A
ASN
376
n
376
ASN
376
A
VAL
377
n
377
VAL
377
A
LEU
378
n
378
LEU
378
A
TYR
379
n
379
TYR
379
A
GLY
380
n
380
GLY
380
A
PRO
381
n
381
PRO
381
A
ASP
382
n
382
ASP
382
A
ASP
383
n
383
ASP
383
A
PRO
384
n
384
PRO
384
A
THR
385
n
385
THR
385
A
ILE
386
n
386
ILE
386
A
SER
387
n
387
SER
387
A
PRO
388
n
388
PRO
388
A
SER
389
n
389
SER
389
A
TYR
390
n
390
TYR
390
A
THR
391
n
391
THR
391
A
TYR
392
n
392
TYR
392
A
TYR
393
n
393
TYR
393
A
ARG
394
n
394
ARG
394
A
PRO
395
n
395
PRO
395
A
GLY
396
n
396
GLY
396
A
VAL
397
n
397
VAL
397
A
ASN
398
n
398
ASN
398
A
LEU
399
n
399
LEU
399
A
SER
400
n
400
SER
400
A
LEU
401
n
401
LEU
401
A
SER
402
n
402
SER
402
A
CYS
403
n
403
CYS
403
A
HIS
404
n
404
HIS
404
A
ALA
405
n
405
ALA
405
A
ALA
406
n
406
ALA
406
A
SER
407
n
407
SER
407
A
ASN
408
n
408
ASN
408
A
PRO
409
n
409
PRO
409
A
PRO
410
n
410
PRO
410
A
ALA
411
n
411
ALA
411
A
GLN
412
n
412
GLN
412
A
TYR
413
n
413
TYR
413
A
SER
414
n
414
SER
414
A
TRP
415
n
415
TRP
415
A
LEU
416
n
416
LEU
416
A
ILE
417
n
417
ILE
417
A
ASP
418
n
418
ASP
418
A
GLY
419
n
419
GLY
419
A
ASN
420
n
420
ASN
420
A
ILE
421
n
421
ILE
421
A
GLN
422
n
422
GLN
422
A
GLN
423
n
423
GLN
423
A
HIS
424
n
424
HIS
424
A
THR
425
n
425
THR
425
A
GLN
426
n
426
GLN
426
A
GLU
427
n
427
GLU
427
A
LEU
428
n
428
LEU
428
A
PHE
429
n
429
PHE
429
A
ILE
430
n
430
ILE
430
A
SER
431
n
431
SER
431
A
ASN
432
n
432
ASN
432
A
ILE
433
n
433
ILE
433
A
THR
434
n
434
THR
434
A
GLU
435
n
435
GLU
435
A
LYS
436
n
436
LYS
436
A
ASN
437
n
437
ASN
437
A
SER
438
n
438
SER
438
A
GLY
439
n
439
GLY
439
A
LEU
440
n
440
LEU
440
A
TYR
441
n
441
TYR
441
A
THR
442
n
442
THR
442
A
CYS
443
n
443
CYS
443
A
GLN
444
n
444
GLN
444
A
ALA
445
n
445
ALA
445
A
ASN
446
n
446
ASN
446
A
ASN
447
n
447
ASN
447
A
SER
448
n
448
SER
448
A
ALA
449
n
449
ALA
449
A
SER
450
n
450
SER
450
A
GLY
451
n
451
GLY
451
A
HIS
452
n
452
HIS
452
A
SER
453
n
453
SER
453
A
ARG
454
n
454
ARG
454
A
THR
455
n
455
THR
455
A
THR
456
n
456
THR
456
A
VAL
457
n
457
VAL
457
A
LYS
458
n
458
LYS
458
A
THR
459
n
459
THR
459
A
ILE
460
n
460
ILE
460
A
THR
461
n
461
THR
461
A
VAL
462
n
462
VAL
462
A
SER
463
n
463
SER
463
A
ALA
464
n
464
ALA
464
A
GLU
465
n
465
GLU
465
A
LEU
466
n
466
LEU
466
A
PRO
467
n
467
PRO
467
A
LYS
468
n
468
LYS
468
A
PRO
469
n
469
PRO
469
A
SER
470
n
470
SER
470
A
ILE
471
n
471
ILE
471
A
SER
472
n
472
SER
472
A
SER
473
n
473
SER
473
A
ASN
474
n
474
ASN
474
A
ASN
475
n
475
ASN
475
A
SER
476
n
476
SER
476
A
LYS
477
n
477
LYS
477
A
PRO
478
n
478
PRO
478
A
VAL
479
n
479
VAL
479
A
GLU
480
n
480
GLU
480
A
ASP
481
n
481
ASP
481
A
LYS
482
n
482
LYS
482
A
ASP
483
n
483
ASP
483
A
ALA
484
n
484
ALA
484
A
VAL
485
n
485
VAL
485
A
ALA
486
n
486
ALA
486
A
PHE
487
n
487
PHE
487
A
THR
488
n
488
THR
488
A
CYS
489
n
489
CYS
489
A
GLU
490
n
490
GLU
490
A
PRO
491
n
491
PRO
491
A
GLU
492
n
492
GLU
492
A
ALA
493
n
493
ALA
493
A
GLN
494
n
494
GLN
494
A
ASN
495
n
495
ASN
495
A
THR
496
n
496
THR
496
A
THR
497
n
497
THR
497
A
TYR
498
n
498
TYR
498
A
LEU
499
n
499
LEU
499
A
TRP
500
n
500
TRP
500
A
TRP
501
n
501
TRP
501
A
VAL
502
n
502
VAL
502
A
ASN
503
n
503
ASN
503
A
GLY
504
n
504
GLY
504
A
GLN
505
n
505
GLN
505
A
SER
506
n
506
SER
506
A
LEU
507
n
507
LEU
507
A
PRO
508
n
508
PRO
508
A
VAL
509
n
509
VAL
509
A
SER
510
n
510
SER
510
A
PRO
511
n
511
PRO
511
A
ARG
512
n
512
ARG
512
A
LEU
513
n
513
LEU
513
A
GLN
514
n
514
GLN
514
A
LEU
515
n
515
LEU
515
A
SER
516
n
516
SER
516
A
ASN
517
n
517
ASN
517
A
GLY
518
n
518
GLY
518
A
ASN
519
n
519
ASN
519
A
ARG
520
n
520
ARG
520
A
THR
521
n
521
THR
521
A
LEU
522
n
522
LEU
522
A
THR
523
n
523
THR
523
A
LEU
524
n
524
LEU
524
A
PHE
525
n
525
PHE
525
A
ASN
526
n
526
ASN
526
A
VAL
527
n
527
VAL
527
A
THR
528
n
528
THR
528
A
ARG
529
n
529
ARG
529
A
ASN
530
n
530
ASN
530
A
ASP
531
n
531
ASP
531
A
ALA
532
n
532
ALA
532
A
ARG
533
n
533
ARG
533
A
ALA
534
n
534
ALA
534
A
TYR
535
n
535
TYR
535
A
VAL
536
n
536
VAL
536
A
CYS
537
n
537
CYS
537
A
GLY
538
n
538
GLY
538
A
ILE
539
n
539
ILE
539
A
GLN
540
n
540
GLN
540
A
ASN
541
n
541
ASN
541
A
SER
542
n
542
SER
542
A
VAL
543
n
543
VAL
543
A
SER
544
n
544
SER
544
A
ALA
545
n
545
ALA
545
A
ASN
546
n
546
ASN
546
A
ARG
547
n
547
ARG
547
A
SER
548
n
548
SER
548
A
ASP
549
n
549
ASP
549
A
PRO
550
n
550
PRO
550
A
VAL
551
n
551
VAL
551
A
THR
552
n
552
THR
552
A
LEU
553
n
553
LEU
553
A
ASP
554
n
554
ASP
554
A
VAL
555
n
555
VAL
555
A
LEU
556
n
556
LEU
556
A
TYR
557
n
557
TYR
557
A
GLY
558
n
558
GLY
558
A
PRO
559
n
559
PRO
559
A
ASP
560
n
560
ASP
560
A
THR
561
n
561
THR
561
A
PRO
562
n
562
PRO
562
A
ILE
563
n
563
ILE
563
A
ILE
564
n
564
ILE
564
A
SER
565
n
565
SER
565
A
PRO
566
n
566
PRO
566
A
PRO
567
n
567
PRO
567
A
ASP
568
n
568
ASP
568
A
SER
569
n
569
SER
569
A
SER
570
n
570
SER
570
A
TYR
571
n
571
TYR
571
A
LEU
572
n
572
LEU
572
A
SER
573
n
573
SER
573
A
GLY
574
n
574
GLY
574
A
ALA
575
n
575
ALA
575
A
ASN
576
n
576
ASN
576
A
LEU
577
n
577
LEU
577
A
ASN
578
n
578
ASN
578
A
LEU
579
n
579
LEU
579
A
SER
580
n
580
SER
580
A
CYS
581
n
581
CYS
581
A
HIS
582
n
582
HIS
582
A
SER
583
n
583
SER
583
A
ALA
584
n
584
ALA
584
A
SER
585
n
585
SER
585
A
ASN
586
n
586
ASN
586
A
PRO
587
n
587
PRO
587
A
SER
588
n
588
SER
588
A
PRO
589
n
589
PRO
589
A
GLN
590
n
590
GLN
590
A
TYR
591
n
591
TYR
591
A
SER
592
n
592
SER
592
A
TRP
593
n
593
TRP
593
A
ARG
594
n
594
ARG
594
A
ILE
595
n
595
ILE
595
A
ASN
596
n
596
ASN
596
A
GLY
597
n
597
GLY
597
A
ILE
598
n
598
ILE
598
A
PRO
599
n
599
PRO
599
A
GLN
600
n
600
GLN
600
A
GLN
601
n
601
GLN
601
A
HIS
602
n
602
HIS
602
A
THR
603
n
603
THR
603
A
GLN
604
n
604
GLN
604
A
VAL
605
n
605
VAL
605
A
LEU
606
n
606
LEU
606
A
PHE
607
n
607
PHE
607
A
ILE
608
n
608
ILE
608
A
ALA
609
n
609
ALA
609
A
LYS
610
n
610
LYS
610
A
ILE
611
n
611
ILE
611
A
THR
612
n
612
THR
612
A
PRO
613
n
613
PRO
613
A
ASN
614
n
614
ASN
614
A
ASN
615
n
615
ASN
615
A
ASN
616
n
616
ASN
616
A
GLY
617
n
617
GLY
617
A
THR
618
n
618
THR
618
A
TYR
619
n
619
TYR
619
A
ALA
620
n
620
ALA
620
A
CYS
621
n
621
CYS
621
A
PHE
622
n
622
PHE
622
A
VAL
623
n
623
VAL
623
A
SER
624
n
624
SER
624
A
ASN
625
n
625
ASN
625
A
LEU
626
n
626
LEU
626
A
ALA
627
n
627
ALA
627
A
THR
628
n
628
THR
628
A
GLY
629
n
629
GLY
629
A
ARG
630
n
630
ARG
630
A
ASN
631
n
631
ASN
631
A
ASN
632
n
632
ASN
632
A
SER
633
n
633
SER
633
A
ILE
634
n
634
ILE
634
A
VAL
635
n
635
VAL
635
A
LYS
636
n
636
LYS
636
A
SER
637
n
637
SER
637
A
ILE
638
n
638
ILE
638
A
THR
639
n
639
THR
639
A
VAL
640
n
640
VAL
640
A
SER
641
n
641
SER
641
A
ALA
642
n
642
ALA
642
A
12 MM NA, K PHOSPHATE, 140 MM NACL
1.2-7.0
OTOKO
QUADRANT DETECTOR
8.0
0.6
2.1
0.2
10
33
Y
ESRF BEAMLINE ID02
288
x-ray
12 MM NA, K PHOSPHATE, 140 MM NACL 99.9% D2O
3.6-7.3
COLETTE
HE-3 ORDELA DETECTOR
8.8
0.5
2.3
0.3
1
29
N
ISIS RUTHERFORD LOQ
288
neutron
modelling
HUMAN CARCINOEMBRYONIC ANTIGEN (CEA) CONTAINS SEVEN EXTRACELLULAR IMMUNOGLOBULIN (IG) FOLD DOMAINS. THE N- TERMINAL DOMAIN IS PREDICTED TO HAVE A V-TYPE IG FOLD, AND WAS MODELLED USING THE V-TYPE DOMAIN STRUCTURES FROM HUMAN CD2 (CODE: 1HNF), HUMAN CD4 (CODE: 3CD4) AND HUMAN CD8 (CODE: 1CD8) . THE SECOND, FOURTH AND SIXTH DOMAINS (COMMONLY REFERRED TO AS IA, IIA AND IIIA) ARE PREDICTED TO HAVE I-TYPE IG FOLDS, AND WERE MODELLED USING THE I-TYPE DOMAIN STRUCTURE FROM HUMAN VCAM-1 (CODE: 1VCA). THE THIRD, FIFTH AND SEVENTH DOMAINS (COMMONLY REFERRED TO AS IB, IIB AND IIIB) ARE PREDICTED TO HAVE C2-TYPE IG FOLDS, AND WERE MODELLED USING THE C2-TYPE DOMAIN STRUCTURE FROM HUMAN CD2 (CODE: 1HNF). FURTHER DETAILS OF THE HOMOLOGY MODELLING ARE GIVEN IN THE PRIMARY REFERENCE. IN THE COMPLETE CEA MODEL, ALL INTER-DOMAIN ORIENTATIONS BETWEEN NEIGHBOURING DOMAINS ARE BASED ON THAT BETWEEN THE TWO DOMAINS IN HUMAN CD2. SUCH AN ARRANGEMENT OF THE DOMAINS WAS SHOWN TO BE COMPATIBLE WITH THE SOLUTION STRUCTURE OF CEA BY X- RAY AND NEUTRON SCATTERING (SEE REFERENCE TWO).
PDB CODE 3CD4, 1CD8
CONSTRAINED SCATTERING FITTING OF HOMOLOGY MODELS
1
BIOSYM/MSI
INSIGHT II, HOMOLOGY, SCTPL4, GNOM
software_defined_assembly
PISA
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
1
A
A
CA
CA
TYR
SER
285
366
1.94
1
A
A
CA
CA
SER
SER
463
544
2.01
ENERGY MINIMIZATION. DETAILS ARE GIVEN IN THE PRIMARY REFERENCE.
1
0
642
0
0
642
refinement
DISCOVERY
CARCINOEMBRYONIC ANTIGEN
CA ATOMS ONLY, CHAIN A
Model of human carcinoembryonic antigen by homology modelling and curve-fitting to experimental solution scattering data
1
N
N
GLYCOPROTEIN
GLYCOPROTEIN, CEA, TUMOUR MARKER, IMMUNOGLOBULIN-FOLD
CCEM_HUMAN
UNP
1
P06731
35
676
1E07
1
642
P06731
A
1
1
642
1
P 1