0.02090
0.00000
0.00059
0.00000
0.01833
0.00000
0.00000
0.00000
0.00970
0.00000
0.00000
0.00000
Schwartz, J.-C.D.
Zhang, X.
Fedorov, A.A.
Nathenson, S.G.
Almo, S.C.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
4
90.00
91.63
90.00
47.85
54.56
103.09
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
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
UK
Nature
NATUAS
0006
0028-0836
410
604
608
10.1038/35069112
11279501
Structural basis for co-stimulation by the human CTLA-4/B7-2 complex.
2001
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
100
1
CCD
2000-01-01
ADSC QUANTUM 4
NULL
SINGLE WAVELENGTH
M
x-ray
1
0.9800
1.0
X9B
NSLS
0.9800
SYNCHROTRON
NSLS BEAMLINE X9B
12849.631
T LYMPHOCYTE ACTIVATION ANTIGEN CD86
IG V-TYPE (RECEPTOR BINDING) DOMAIN
2
man
polymer
13510.340
CYTOTOXIC T-LYMPHOCYTE-ASSOCIATED PROTEIN 4
EXTRACELLULAR DOMAIN
2
man
polymer
B7-2
CTLA-4
no
no
MLKIQAYFNETADLPCQFANSQNQSLSELVVFWQDQENLVLNEVYLGKEKFDSVHSKYMGRTSFDSDSWTLRLHNLQIKD
KGLYQCIIHHKKPTGMIRIHQMNSELSVLA
MLKIQAYFNETADLPCQFANSQNQSLSELVVFWQDQENLVLNEVYLGKEKFDSVHSKYMGRTSFDSDSWTLRLHNLQIKD
KGLYQCIIHHKKPTGMIRIHQMNSELSVLA
A,B
polypeptide(L)
no
no
KAMHVAQPAVVLASSRGIASFVCEYASPGKATEVRVTVLRQADSQVTEVCAATYMMGNELTFLDDSICTGTSSGNQVNLT
IQGLRAMDTGLYICKVELMYPPPYYLGIGNGTQIYVIDPEPCPDSD
KAMHVAQPAVVLASSRGIASFVCEYASPGKATEVRVTVLRQADSQVTEVCAATYMMGNELTFLDDSICTGTSSGNQVNLT
IQGLRAMDTGLYICKVELMYPPPYYLGIGNGTQIYVIDPEPCPDSD
C,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
human
Homo
Escherichia
Escherichia coli
sample
CD86
9606
Homo sapiens
469008
Escherichia coli BL21(DE3)
BL21 (DE3)
PLASMID
PET3A
human
Homo
Escherichia
Escherichia coli
sample
CTLA4
9606
Homo sapiens
469008
Escherichia coli BL21(DE3)
BL21 (DE3)
PLASMID
PET3A
1
2.59
52
VAPOR DIFFUSION, HANGING DROP
7.0
PEG20K, HEPES, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
298
repository
Initial release
Version format compliance
Version format compliance
1
0
2001-04-04
1
1
2008-04-27
1
2
2011-07-13
RCSB
Y
RCSB
2001-03-12
REL
MET
0
n
1
MET
0
A
LEU
1
n
2
LEU
1
A
LYS
2
n
3
LYS
2
A
ILE
3
n
4
ILE
3
A
GLN
4
n
5
GLN
4
A
ALA
5
n
6
ALA
5
A
TYR
6
n
7
TYR
6
A
PHE
7
n
8
PHE
7
A
ASN
8
n
9
ASN
8
A
GLU
9
n
10
GLU
9
A
THR
10
n
11
THR
10
A
ALA
11
n
12
ALA
11
A
ASP
12
n
13
ASP
12
A
LEU
13
n
14
LEU
13
A
PRO
14
n
15
PRO
14
A
CYS
15
n
16
CYS
15
A
GLN
16
n
17
GLN
16
A
PHE
17
n
18
PHE
17
A
ALA
18
n
19
ALA
18
A
ASN
19
n
20
ASN
19
A
SER
20
n
21
SER
20
A
GLN
21
n
22
GLN
21
A
ASN
22
n
23
ASN
22
A
GLN
23
n
24
GLN
23
A
SER
24
n
25
SER
24
A
LEU
25
n
26
LEU
25
A
SER
26
n
27
SER
26
A
GLU
27
n
28
GLU
27
A
LEU
28
n
29
LEU
28
A
VAL
29
n
30
VAL
29
A
VAL
30
n
31
VAL
30
A
PHE
31
n
32
PHE
31
A
TRP
32
n
33
TRP
32
A
GLN
33
n
34
GLN
33
A
ASP
34
n
35
ASP
34
A
GLN
35
n
36
GLN
35
A
GLU
36
n
37
GLU
36
A
ASN
37
n
38
ASN
37
A
LEU
38
n
39
LEU
38
A
VAL
39
n
40
VAL
39
A
LEU
40
n
41
LEU
40
A
ASN
41
n
42
ASN
41
A
GLU
42
n
43
GLU
42
A
VAL
43
n
44
VAL
43
A
TYR
44
n
45
TYR
44
A
LEU
45
n
46
LEU
45
A
GLY
46
n
47
GLY
46
A
LYS
47
n
48
LYS
47
A
GLU
48
n
49
GLU
48
A
LYS
49
n
50
LYS
49
A
PHE
50
n
51
PHE
50
A
ASP
51
n
52
ASP
51
A
SER
52
n
53
SER
52
A
VAL
53
n
54
VAL
53
A
HIS
54
n
55
HIS
54
A
SER
55
n
56
SER
55
A
LYS
56
n
57
LYS
56
A
TYR
57
n
58
TYR
57
A
MET
58
n
59
MET
58
A
GLY
59
n
60
GLY
59
A
ARG
60
n
61
ARG
60
A
THR
61
n
62
THR
61
A
SER
62
n
63
SER
62
A
PHE
63
n
64
PHE
63
A
ASP
64
n
65
ASP
64
A
SER
65
n
66
SER
65
A
ASP
66
n
67
ASP
66
A
SER
67
n
68
SER
67
A
TRP
68
n
69
TRP
68
A
THR
69
n
70
THR
69
A
LEU
70
n
71
LEU
70
A
ARG
71
n
72
ARG
71
A
LEU
72
n
73
LEU
72
A
HIS
73
n
74
HIS
73
A
ASN
74
n
75
ASN
74
A
LEU
75
n
76
LEU
75
A
GLN
76
n
77
GLN
76
A
ILE
77
n
78
ILE
77
A
LYS
78
n
79
LYS
78
A
ASP
79
n
80
ASP
79
A
LYS
80
n
81
LYS
80
A
GLY
81
n
82
GLY
81
A
LEU
82
n
83
LEU
82
A
TYR
83
n
84
TYR
83
A
GLN
84
n
85
GLN
84
A
CYS
85
n
86
CYS
85
A
ILE
86
n
87
ILE
86
A
ILE
87
n
88
ILE
87
A
HIS
88
n
89
HIS
88
A
HIS
89
n
90
HIS
89
A
LYS
90
n
91
LYS
90
A
LYS
91
n
92
LYS
91
A
PRO
92
n
93
PRO
92
A
THR
93
n
94
THR
93
A
GLY
94
n
95
GLY
94
A
MET
95
n
96
MET
95
A
ILE
96
n
97
ILE
96
A
ARG
97
n
98
ARG
97
A
ILE
98
n
99
ILE
98
A
HIS
99
n
100
HIS
99
A
GLN
100
n
101
GLN
100
A
MET
101
n
102
MET
101
A
ASN
102
n
103
ASN
102
A
SER
103
n
104
SER
103
A
GLU
104
n
105
GLU
104
A
LEU
105
n
106
LEU
105
A
SER
106
n
107
SER
106
A
VAL
107
n
108
VAL
107
A
LEU
108
n
109
LEU
108
A
ALA
109
n
110
ALA
109
A
n
1
0
B
LEU
1
n
2
LEU
1
B
LYS
2
n
3
LYS
2
B
ILE
3
n
4
ILE
3
B
GLN
4
n
5
GLN
4
B
ALA
5
n
6
ALA
5
B
TYR
6
n
7
TYR
6
B
PHE
7
n
8
PHE
7
B
ASN
8
n
9
ASN
8
B
GLU
9
n
10
GLU
9
B
THR
10
n
11
THR
10
B
ALA
11
n
12
ALA
11
B
ASP
12
n
13
ASP
12
B
LEU
13
n
14
LEU
13
B
PRO
14
n
15
PRO
14
B
CYS
15
n
16
CYS
15
B
GLN
16
n
17
GLN
16
B
PHE
17
n
18
PHE
17
B
ALA
18
n
19
ALA
18
B
ASN
19
n
20
ASN
19
B
SER
20
n
21
SER
20
B
GLN
21
n
22
GLN
21
B
ASN
22
n
23
ASN
22
B
GLN
23
n
24
GLN
23
B
SER
24
n
25
SER
24
B
LEU
25
n
26
LEU
25
B
SER
26
n
27
SER
26
B
GLU
27
n
28
GLU
27
B
LEU
28
n
29
LEU
28
B
VAL
29
n
30
VAL
29
B
VAL
30
n
31
VAL
30
B
PHE
31
n
32
PHE
31
B
TRP
32
n
33
TRP
32
B
GLN
33
n
34
GLN
33
B
ASP
34
n
35
ASP
34
B
GLN
35
n
36
GLN
35
B
GLU
36
n
37
GLU
36
B
ASN
37
n
38
ASN
37
B
LEU
38
n
39
LEU
38
B
VAL
39
n
40
VAL
39
B
LEU
40
n
41
LEU
40
B
ASN
41
n
42
ASN
41
B
GLU
42
n
43
GLU
42
B
VAL
43
n
44
VAL
43
B
TYR
44
n
45
TYR
44
B
LEU
45
n
46
LEU
45
B
GLY
46
n
47
GLY
46
B
LYS
47
n
48
LYS
47
B
GLU
48
n
49
GLU
48
B
LYS
49
n
50
LYS
49
B
PHE
50
n
51
PHE
50
B
ASP
51
n
52
ASP
51
B
SER
52
n
53
SER
52
B
VAL
53
n
54
VAL
53
B
HIS
54
n
55
HIS
54
B
SER
55
n
56
SER
55
B
LYS
56
n
57
LYS
56
B
TYR
57
n
58
TYR
57
B
MET
58
n
59
MET
58
B
GLY
59
n
60
GLY
59
B
ARG
60
n
61
ARG
60
B
THR
61
n
62
THR
61
B
SER
62
n
63
SER
62
B
PHE
63
n
64
PHE
63
B
ASP
64
n
65
ASP
64
B
SER
65
n
66
SER
65
B
ASP
66
n
67
ASP
66
B
SER
67
n
68
SER
67
B
TRP
68
n
69
TRP
68
B
THR
69
n
70
THR
69
B
LEU
70
n
71
LEU
70
B
ARG
71
n
72
ARG
71
B
LEU
72
n
73
LEU
72
B
HIS
73
n
74
HIS
73
B
ASN
74
n
75
ASN
74
B
LEU
75
n
76
LEU
75
B
GLN
76
n
77
GLN
76
B
ILE
77
n
78
ILE
77
B
LYS
78
n
79
LYS
78
B
ASP
79
n
80
ASP
79
B
LYS
80
n
81
LYS
80
B
GLY
81
n
82
GLY
81
B
LEU
82
n
83
LEU
82
B
TYR
83
n
84
TYR
83
B
GLN
84
n
85
GLN
84
B
CYS
85
n
86
CYS
85
B
ILE
86
n
87
ILE
86
B
ILE
87
n
88
ILE
87
B
HIS
88
n
89
HIS
88
B
HIS
89
n
90
HIS
89
B
LYS
90
n
91
LYS
90
B
LYS
91
n
92
LYS
91
B
PRO
92
n
93
PRO
92
B
THR
93
n
94
THR
93
B
GLY
94
n
95
GLY
94
B
MET
95
n
96
MET
95
B
ILE
96
n
97
ILE
96
B
ARG
97
n
98
ARG
97
B
ILE
98
n
99
ILE
98
B
HIS
99
n
100
HIS
99
B
GLN
100
n
101
GLN
100
B
MET
101
n
102
MET
101
B
ASN
102
n
103
ASN
102
B
SER
103
n
104
SER
103
B
GLU
104
n
105
GLU
104
B
LEU
105
n
106
LEU
105
B
SER
106
n
107
SER
106
B
VAL
107
n
108
VAL
107
B
LEU
108
n
109
LEU
108
B
ALA
109
n
110
ALA
109
B
n
1
1
C
n
2
2
C
MET
3
n
3
MET
3
C
HIS
4
n
4
HIS
4
C
VAL
5
n
5
VAL
5
C
ALA
6
n
6
ALA
6
C
GLN
7
n
7
GLN
7
C
PRO
8
n
8
PRO
8
C
ALA
9
n
9
ALA
9
C
VAL
10
n
10
VAL
10
C
VAL
11
n
11
VAL
11
C
LEU
12
n
12
LEU
12
C
ALA
13
n
13
ALA
13
C
SER
14
n
14
SER
14
C
SER
15
n
15
SER
15
C
ARG
16
n
16
ARG
16
C
GLY
17
n
17
GLY
17
C
ILE
18
n
18
ILE
18
C
ALA
19
n
19
ALA
19
C
SER
20
n
20
SER
20
C
PHE
21
n
21
PHE
21
C
VAL
22
n
22
VAL
22
C
CYS
23
n
23
CYS
23
C
GLU
24
n
24
GLU
24
C
TYR
25
n
25
TYR
25
C
ALA
26
n
26
ALA
26
C
SER
27
n
27
SER
27
C
PRO
28
n
28
PRO
28
C
GLY
29
n
29
GLY
29
C
LYS
30
n
30
LYS
30
C
ALA
31
n
31
ALA
31
C
THR
32
n
32
THR
32
C
GLU
33
n
33
GLU
33
C
VAL
34
n
34
VAL
34
C
ARG
35
n
35
ARG
35
C
VAL
36
n
36
VAL
36
C
THR
37
n
37
THR
37
C
VAL
38
n
38
VAL
38
C
LEU
39
n
39
LEU
39
C
ARG
40
n
40
ARG
40
C
GLN
41
n
41
GLN
41
C
ALA
42
n
42
ALA
42
C
ASP
43
n
43
ASP
43
C
SER
44
n
44
SER
44
C
GLN
45
n
45
GLN
45
C
VAL
46
n
46
VAL
46
C
THR
47
n
47
THR
47
C
GLU
48
n
48
GLU
48
C
VAL
49
n
49
VAL
49
C
CYS
50
n
50
CYS
50
C
ALA
51
n
51
ALA
51
C
ALA
52
n
52
ALA
52
C
THR
53
n
53
THR
53
C
TYR
54
n
54
TYR
54
C
MET
55
n
55
MET
55
C
MET
56
n
56
MET
56
C
GLY
57
n
57
GLY
57
C
ASN
58
n
58
ASN
58
C
GLU
59
n
59
GLU
59
C
LEU
60
n
60
LEU
60
C
THR
61
n
61
THR
61
C
PHE
62
n
62
PHE
62
C
LEU
63
n
63
LEU
63
C
ASP
64
n
64
ASP
64
C
ASP
65
n
65
ASP
65
C
SER
66
n
66
SER
66
C
ILE
67
n
67
ILE
67
C
CYS
68
n
68
CYS
68
C
THR
69
n
69
THR
69
C
GLY
70
n
70
GLY
70
C
THR
71
n
71
THR
71
C
SER
72
n
72
SER
72
C
SER
73
n
73
SER
73
C
GLY
74
n
74
GLY
74
C
ASN
75
n
75
ASN
75
C
GLN
76
n
76
GLN
76
C
VAL
77
n
77
VAL
77
C
ASN
78
n
78
ASN
78
C
LEU
79
n
79
LEU
79
C
THR
80
n
80
THR
80
C
ILE
81
n
81
ILE
81
C
GLN
82
n
82
GLN
82
C
GLY
83
n
83
GLY
83
C
LEU
84
n
84
LEU
84
C
ARG
85
n
85
ARG
85
C
ALA
86
n
86
ALA
86
C
MET
87
n
87
MET
87
C
ASP
88
n
88
ASP
88
C
THR
89
n
89
THR
89
C
GLY
90
n
90
GLY
90
C
LEU
91
n
91
LEU
91
C
TYR
92
n
92
TYR
92
C
ILE
93
n
93
ILE
93
C
CYS
94
n
94
CYS
94
C
LYS
95
n
95
LYS
95
C
VAL
96
n
96
VAL
96
C
GLU
97
n
97
GLU
97
C
LEU
98
n
98
LEU
98
C
MET
99
n
99
MET
99
C
TYR
100
n
100
TYR
100
C
PRO
101
n
101
PRO
101
C
PRO
102
n
102
PRO
102
C
PRO
103
n
103
PRO
103
C
TYR
104
n
104
TYR
104
C
TYR
105
n
105
TYR
105
C
LEU
106
n
106
LEU
106
C
GLY
107
n
107
GLY
107
C
ILE
108
n
108
ILE
108
C
GLY
109
n
109
GLY
109
C
ASN
110
n
110
ASN
110
C
GLY
111
n
111
GLY
111
C
ALA
112
n
112
THR
112
C
GLN
113
n
113
GLN
113
C
ILE
114
n
114
ILE
114
C
TYR
115
n
115
TYR
115
C
VAL
116
n
116
VAL
116
C
ILE
117
n
117
ILE
117
C
ASP
118
n
118
ASP
118
C
PRO
119
n
119
PRO
119
C
GLU
120
n
120
GLU
120
C
n
121
121
C
n
122
122
C
n
123
123
C
n
124
124
C
n
125
125
C
n
126
126
C
n
1
1
D
n
2
2
D
MET
3
n
3
MET
3
D
HIS
4
n
4
HIS
4
D
VAL
5
n
5
VAL
5
D
ALA
6
n
6
ALA
6
D
GLN
7
n
7
GLN
7
D
PRO
8
n
8
PRO
8
D
ALA
9
n
9
ALA
9
D
VAL
10
n
10
VAL
10
D
VAL
11
n
11
VAL
11
D
LEU
12
n
12
LEU
12
D
ALA
13
n
13
ALA
13
D
SER
14
n
14
SER
14
D
SER
15
n
15
SER
15
D
ARG
16
n
16
ARG
16
D
GLY
17
n
17
GLY
17
D
ILE
18
n
18
ILE
18
D
ALA
19
n
19
ALA
19
D
SER
20
n
20
SER
20
D
PHE
21
n
21
PHE
21
D
VAL
22
n
22
VAL
22
D
CYS
23
n
23
CYS
23
D
GLU
24
n
24
GLU
24
D
TYR
25
n
25
TYR
25
D
ALA
26
n
26
ALA
26
D
n
27
27
D
n
28
28
D
n
29
29
D
n
30
30
D
ALA
31
n
31
ALA
31
D
THR
32
n
32
THR
32
D
GLU
33
n
33
GLU
33
D
VAL
34
n
34
VAL
34
D
ARG
35
n
35
ARG
35
D
VAL
36
n
36
VAL
36
D
THR
37
n
37
THR
37
D
VAL
38
n
38
VAL
38
D
LEU
39
n
39
LEU
39
D
ARG
40
n
40
ARG
40
D
GLN
41
n
41
GLN
41
D
n
42
42
D
n
43
43
D
n
44
44
D
GLN
45
n
45
GLN
45
D
VAL
46
n
46
VAL
46
D
THR
47
n
47
THR
47
D
GLU
48
n
48
GLU
48
D
VAL
49
n
49
VAL
49
D
CYS
50
n
50
CYS
50
D
ALA
51
n
51
ALA
51
D
ALA
52
n
52
ALA
52
D
THR
53
n
53
THR
53
D
TYR
54
n
54
TYR
54
D
MET
55
n
55
MET
55
D
MET
56
n
56
MET
56
D
GLY
57
n
57
GLY
57
D
ASN
58
n
58
ASN
58
D
GLU
59
n
59
GLU
59
D
LEU
60
n
60
LEU
60
D
THR
61
n
61
THR
61
D
PHE
62
n
62
PHE
62
D
LEU
63
n
63
LEU
63
D
ASP
64
n
64
ASP
64
D
ASP
65
n
65
ASP
65
D
SER
66
n
66
SER
66
D
ILE
67
n
67
ILE
67
D
CYS
68
n
68
CYS
68
D
THR
69
n
69
THR
69
D
GLY
70
n
70
GLY
70
D
THR
71
n
71
THR
71
D
SER
72
n
72
SER
72
D
SER
73
n
73
SER
73
D
GLY
74
n
74
GLY
74
D
ASN
75
n
75
ASN
75
D
GLN
76
n
76
GLN
76
D
VAL
77
n
77
VAL
77
D
ASN
78
n
78
ASN
78
D
LEU
79
n
79
LEU
79
D
THR
80
n
80
THR
80
D
ILE
81
n
81
ILE
81
D
GLN
82
n
82
GLN
82
D
GLY
83
n
83
GLY
83
D
LEU
84
n
84
LEU
84
D
ARG
85
n
85
ARG
85
D
ALA
86
n
86
ALA
86
D
MET
87
n
87
MET
87
D
ASP
88
n
88
ASP
88
D
THR
89
n
89
THR
89
D
GLY
90
n
90
GLY
90
D
LEU
91
n
91
LEU
91
D
TYR
92
n
92
TYR
92
D
ILE
93
n
93
ILE
93
D
CYS
94
n
94
CYS
94
D
LYS
95
n
95
LYS
95
D
VAL
96
n
96
VAL
96
D
GLU
97
n
97
GLU
97
D
LEU
98
n
98
LEU
98
D
MET
99
n
99
MET
99
D
TYR
100
n
100
TYR
100
D
PRO
101
n
101
PRO
101
D
PRO
102
n
102
PRO
102
D
PRO
103
n
103
PRO
103
D
TYR
104
n
104
TYR
104
D
TYR
105
n
105
TYR
105
D
LEU
106
n
106
LEU
106
D
GLY
107
n
107
GLY
107
D
ILE
108
n
108
ILE
108
D
GLY
109
n
109
GLY
109
D
ASN
110
n
110
ASN
110
D
GLY
111
n
111
GLY
111
D
ALA
112
n
112
THR
112
D
GLN
113
n
113
GLN
113
D
ILE
114
n
114
ILE
114
D
TYR
115
n
115
TYR
115
D
VAL
116
n
116
VAL
116
D
ILE
117
n
117
ILE
117
D
ASP
118
n
118
ASP
118
D
PRO
119
n
119
PRO
119
D
GLU
120
n
120
GLU
120
D
n
121
121
D
n
122
122
D
n
123
123
D
n
124
124
D
n
125
125
D
n
126
126
D
author_defined_assembly
4
tetrameric
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
ILE
3
A
N
ILE
4
A
O
GLU
104
A
O
GLU
105
A
O
SER
103
A
O
SER
104
A
N
TYR
83
A
N
TYR
84
A
N
HIS
88
A
N
HIS
89
A
O
VAL
29
A
O
VAL
30
A
O
TRP
32
A
O
TRP
33
A
N
LEU
40
A
N
LEU
41
A
N
LEU
13
A
N
LEU
14
A
O
LEU
70
A
O
LEU
71
A
N
ARG
71
A
N
ARG
72
A
O
SER
62
A
O
SER
63
B
N
ILE
3
B
N
ILE
4
B
O
GLU
104
B
O
GLU
105
B
O
SER
103
B
O
SER
104
B
N
TYR
83
B
N
TYR
84
B
N
HIS
88
B
N
HIS
89
B
O
VAL
29
B
O
VAL
30
B
O
TRP
32
B
O
TRP
33
B
N
LEU
40
B
N
LEU
41
B
O
TYR
44
B
O
TYR
45
B
N
LYS
47
B
N
LYS
48
B
O
ALA
11
B
O
ALA
12
B
N
LEU
72
B
N
LEU
73
B
O
ARG
71
B
O
ARG
72
B
N
SER
62
B
N
SER
63
C
O
ALA
6
C
O
ALA
6
C
N
GLU
24
C
N
GLU
24
C
O
CYS
23
C
O
CYS
23
C
N
VAL
77
C
N
VAL
77
C
N
ASN
78
C
N
ASN
78
C
O
THR
71
C
O
THR
71
C
N
VAL
11
C
N
VAL
11
C
O
GLN
113
C
O
GLN
113
C
N
ILE
114
C
N
ILE
114
C
O
GLY
90
C
O
GLY
90
C
N
TYR
54
C
N
TYR
54
C
O
VAL
34
C
O
VAL
34
C
N
THR
37
C
N
THR
37
C
O
LYS
95
C
O
LYS
95
C
N
VAL
96
C
N
VAL
96
C
O
GLY
107
C
O
GLY
107
D
O
ALA
6
D
O
ALA
6
D
N
GLU
24
D
N
GLU
24
D
N
CYS
23
D
N
CYS
23
D
O
VAL
77
D
O
VAL
77
D
N
ASN
78
D
N
ASN
78
D
O
THR
71
D
O
THR
71
D
N
VAL
11
D
N
VAL
11
D
O
GLN
113
D
O
GLN
113
D
N
ILE
114
D
N
ILE
114
D
O
GLY
90
D
O
GLY
90
D
O
CYS
50
D
O
CYS
50
D
N
VAL
38
D
N
VAL
38
D
O
THR
37
D
O
THR
37
D
N
LYS
95
D
N
LYS
95
D
N
VAL
96
D
N
VAL
96
D
O
GLY
107
D
O
GLY
107
1
C
OG1
THR
112
C
OG1
THR
112
1
Y
1
C
CG2
THR
112
C
CG2
THR
112
1
Y
1
D
OG1
THR
112
D
OG1
THR
112
1
Y
1
D
CG2
THR
112
D
CG2
THR
112
1
Y
1
B
MET
0
B
MET
1
1
Y
1
C
LYS
1
C
LYS
1
1
Y
1
C
ALA
2
C
ALA
2
1
Y
1
C
PRO
121
C
PRO
121
1
Y
1
C
CYS
122
C
CYS
122
1
Y
1
C
PRO
123
C
PRO
123
1
Y
1
C
ASP
124
C
ASP
124
1
Y
1
C
SER
125
C
SER
125
1
Y
1
C
ASP
126
C
ASP
126
1
Y
1
D
LYS
1
D
LYS
1
1
Y
1
D
ALA
2
D
ALA
2
1
Y
1
D
SER
27
D
SER
27
1
Y
1
D
PRO
28
D
PRO
28
1
Y
1
D
GLY
29
D
GLY
29
1
Y
1
D
LYS
30
D
LYS
30
1
Y
1
D
ALA
42
D
ALA
42
1
Y
1
D
ASP
43
D
ASP
43
1
Y
1
D
SER
44
D
SER
44
1
Y
1
D
PRO
121
D
PRO
121
1
Y
1
D
CYS
122
D
CYS
122
1
Y
1
D
PRO
123
D
PRO
123
1
Y
1
D
ASP
124
D
ASP
124
1
Y
1
D
SER
125
D
SER
125
1
Y
1
D
ASP
126
D
ASP
126
1
Y
1
D
D
O
N
VAL
ASP
116
118
2.19
1
A
LEU
1
167.41
91.52
1
A
GLU
9
-101.47
-160.08
1
A
GLN
16
60.64
-3.64
1
A
ASN
19
-24.86
122.36
1
A
GLN
21
-84.58
42.86
1
A
ASN
22
9.34
99.15
1
A
LEU
25
-50.71
-0.89
1
A
GLU
27
-95.61
32.46
1
A
LEU
40
-86.73
-82.95
1
A
LEU
45
25.96
31.97
1
A
ARG
60
-166.38
46.55
1
A
SER
62
-164.91
113.31
1
A
SER
65
-48.06
-11.11
1
A
TRP
68
60.08
-8.68
1
A
THR
69
-62.40
-175.56
1
A
LYS
80
-49.38
94.56
1
A
LYS
90
-59.56
94.65
1
B
GLN
16
66.35
-10.30
1
B
PHE
17
-49.64
160.20
1
B
ALA
18
-153.24
65.52
1
B
ASN
19
-17.29
116.87
1
B
SER
20
-103.66
-61.34
1
B
GLN
21
-80.79
42.43
1
B
ASN
22
12.54
100.62
1
B
LEU
25
-62.34
3.22
1
B
ASP
34
-102.79
-160.14
1
B
LEU
40
-90.03
-81.66
1
B
LEU
45
25.64
33.61
1
B
ASP
51
-38.88
-37.55
1
B
ARG
60
-153.89
43.37
1
B
SER
62
-172.40
140.49
1
B
TRP
68
51.47
11.65
1
B
LEU
70
-166.02
103.32
1
B
ASN
74
34.34
74.27
1
B
LYS
80
-55.88
95.74
1
B
LYS
90
-58.96
85.40
1
B
GLN
100
-162.03
114.91
1
C
LYS
30
173.96
139.75
1
C
ALA
31
-34.37
131.41
1
C
ARG
40
-177.68
124.44
1
C
ALA
42
-91.02
-103.55
1
C
SER
44
-175.61
-12.59
1
C
MET
55
-63.54
-171.11
1
C
ASP
64
-35.34
-37.11
1
C
SER
66
-56.50
-144.76
1
C
SER
73
-174.39
84.69
1
C
ASN
75
60.61
-23.84
1
C
THR
89
-22.83
113.93
1
C
MET
99
-67.65
-153.75
1
C
TYR
104
-67.33
-168.75
1
C
TYR
105
171.30
105.73
1
C
ILE
117
-36.96
70.03
1
C
ASP
118
179.81
81.91
1
D
HIS
4
-172.00
107.61
1
D
THR
32
-150.70
-34.31
1
D
ARG
40
-169.35
118.87
1
D
MET
55
-68.55
-163.55
1
D
THR
61
-121.81
-68.17
1
D
PHE
62
58.11
76.95
1
D
LEU
63
41.40
-105.85
1
D
ASP
64
-176.28
-20.47
1
D
SER
73
-167.26
78.73
1
D
ASN
75
62.16
-48.03
1
D
THR
89
-30.84
130.26
1
D
MET
99
-64.05
-158.45
1
D
TYR
104
-67.25
-176.47
1
D
TYR
105
177.74
123.50
1
D
ILE
117
-41.82
76.03
1
D
ASP
118
171.47
86.26
protein_rep.param
protein.top
20.4
0.3
0.217
3.2
10
606
8655
6516
10
RANDOM
1
THROUGHOUT
1.2
1.4
MOLECULAR REPLACEMENT
Engh & Huber
0.52
0.38
5
0.69
3.2
10
0
3515
0
0
3515
0.008
1.3
25.3
0.97
0.419
0.372
3.31
61
415
10
10
56.3
3.2
25
1I85
7080
7080
0
0
0.121
1
6.6
2.4
78.8
0.321
3.2
3.31
2.2
2.3
79.4
data reduction
DENZO
data scaling
SCALEPACK
refinement
CNS
phasing
CNS
CTLA-4/B7-2 COMPLEX
CRYSTAL STRUCTURE OF THE CTLA-4/B7-2 COMPLEX
1
N
N
1
N
N
2
N
N
2
N
N
The CTLA-4 homodimer is generated by Chain D and the translatonal symmetry mate of chain C (apply the operator x,y,z+1 to Chain C)
The repeating arrangement of CTLA-4 and B7-2 dimers is generated by applying the translational symmetry operation (x,y,z+/-N; where N ranges over all integers) to all chains in the asymmetric unit
disulf
2.034
A
CYS
15
A
SG
CYS
16
1_555
A
CYS
85
A
SG
CYS
86
1_555
disulf
2.025
B
CYS
15
B
SG
CYS
16
1_555
B
CYS
85
B
SG
CYS
86
1_555
disulf
2.029
C
CYS
23
C
SG
CYS
23
1_555
C
CYS
94
C
SG
CYS
94
1_555
disulf
2.021
C
CYS
50
C
SG
CYS
50
1_555
C
CYS
68
C
SG
CYS
68
1_555
disulf
2.021
D
CYS
23
D
SG
CYS
23
1_555
D
CYS
94
D
SG
CYS
94
1_555
disulf
2.043
D
CYS
50
D
SG
CYS
50
1_555
D
CYS
68
D
SG
CYS
68
1_555
IMMUNE SYSTEM
Ig V-type domain, IMMUNE SYSTEM
C
TYR
100
C
TYR
100
1
C
PRO
101
C
PRO
101
-0.55
C
PRO
102
C
PRO
102
1
C
PRO
103
C
PRO
103
0.20
D
TYR
100
D
TYR
100
1
D
PRO
101
D
PRO
101
-0.06
D
PRO
102
D
PRO
102
1
D
PRO
103
D
PRO
103
0.21
CD86_HUMAN
UNP
1
26
P42081
CTLA4_HUMAN
UNP
2
36
P16410
26
134
1I85
1
109
P42081
A
1
2
110
26
134
1I85
1
109
P42081
B
1
2
110
36
161
1I85
1
126
P16410
C
2
1
126
36
161
1I85
1
126
P16410
D
2
1
126
1
INITIATING METHIONINE
MET
0
1I85
A
P42081
UNP
1
2
INITIATING METHIONINE
MET
0
1I85
B
P42081
UNP
1
3
THR
see remark 999
MET
56
1I85
C
P16410
UNP
91
56
4
THR
see remark 999
MET
56
1I85
D
P16410
UNP
91
56
5
3
6
3
4
3
4
4
3
4
parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
A
LYS
2
A
LYS
3
A
TYR
6
A
TYR
7
A
ARG
97
A
ARG
98
A
LEU
108
A
LEU
109
A
LEU
82
A
LEU
83
A
HIS
88
A
HIS
89
A
VAL
29
A
VAL
30
A
GLN
33
A
GLN
34
A
VAL
39
A
VAL
40
A
VAL
43
A
VAL
44
A
ALA
11
A
ALA
12
A
LEU
13
A
LEU
14
A
LEU
70
A
LEU
71
A
LEU
72
A
LEU
73
A
THR
61
A
THR
62
A
PHE
63
A
PHE
64
B
LYS
2
B
LYS
3
B
TYR
6
B
TYR
7
B
ARG
97
B
ARG
98
B
LEU
108
B
LEU
109
B
LEU
82
B
LEU
83
B
HIS
88
B
HIS
89
B
VAL
29
B
VAL
30
B
GLN
33
B
GLN
34
B
VAL
39
B
VAL
40
B
TYR
44
B
TYR
45
B
LYS
47
B
LYS
48
B
GLU
48
B
GLU
49
B
ALA
11
B
ALA
12
B
ASP
12
B
ASP
13
B
LEU
70
B
LEU
71
B
LEU
72
B
LEU
73
B
THR
61
B
THR
62
B
PHE
63
B
PHE
64
C
VAL
5
C
VAL
5
C
ALA
6
C
ALA
6
C
VAL
22
C
VAL
22
C
TYR
25
C
TYR
25
C
GLN
76
C
GLN
76
C
ASN
78
C
ASN
78
C
THR
71
C
THR
71
C
SER
72
C
SER
72
C
VAL
10
C
VAL
10
C
LEU
12
C
LEU
12
C
THR
112
C
THR
112
C
TYR
115
C
TYR
115
C
GLY
90
C
GLY
90
C
TYR
92
C
TYR
92
C
CYS
50
C
CYS
50
C
TYR
54
C
TYR
54
C
VAL
34
C
VAL
34
C
VAL
38
C
VAL
38
C
CYS
94
C
CYS
94
C
LEU
98
C
LEU
98
C
LEU
106
C
LEU
106
C
GLY
107
C
GLY
107
D
VAL
5
D
VAL
5
D
ALA
6
D
ALA
6
D
VAL
22
D
VAL
22
D
TYR
25
D
TYR
25
D
GLN
76
D
GLN
76
D
ASN
78
D
ASN
78
D
THR
71
D
THR
71
D
SER
72
D
SER
72
D
VAL
10
D
VAL
10
D
LEU
12
D
LEU
12
D
THR
112
D
THR
112
D
TYR
115
D
TYR
115
D
GLY
90
D
GLY
90
D
TYR
92
D
TYR
92
D
CYS
50
D
CYS
50
D
ALA
51
D
ALA
51
D
VAL
34
D
VAL
34
D
VAL
38
D
VAL
38
D
CYS
94
D
CYS
94
D
LEU
98
D
LEU
98
D
LEU
106
D
LEU
106
D
ILE
108
D
ILE
108
4
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