1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
Byeon, I.J.
Louis, J.M.
Gronenborn, A.M.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
C3 H7 N O2
89.093
y
ALANINE
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
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 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
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
J.Mol.Biol.
JMOBAK
0070
0022-2836
333
141
152
10.1016/S0022-2836(03)00928-8
14516749
A Protein Contortionist: Core Mutations of GB1 that Induce Dimerization and Domain Swapping
2003
US
Science
SCIEAS
0038
0036-8075
253
657
661
A Novel, Highly Stable Fold of the Immunoglobulin Binding Domain of Streptococcal Protein G
1991
US
Nat.Struct.Biol.
NSBIEW
2024
1072-8368
9
877
885
Core Mutations Switch Monomeric Protein GB1 Into an Intertwined Tetramer
2002
10.2210/pdb1q10/pdb
pdb_00001q10
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
SINGLE WAVELENGTH
M
1
1.0
6226.835
Immunoglobulin G binding protein G
B1 Domain
T228Q,L231V,F256V,Y259F,A260F
2
man
polymer
IgG binding protein G
no
no
MQYKVILNGKTLKGETTTEAVDAATAEKVVKQFFNDNGVDGEWTYDDATKTFTVTE
MQYKVILNGKTLKGETTTEAVDAATAEKVVKQFFNDNGVDGEWTYDDATKTFTVTE
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
Streptococcus
Escherichia
sample
SPG
1320
Streptococcus sp. 'group G'
562
Escherichia coli
HMS174(DE3)
Plasmid
pET11A
database_2
pdbx_nmr_software
pdbx_struct_assembly
pdbx_struct_oper_list
struct_ref_seq_dif
repository
Initial release
Version format compliance
Version format compliance
Data collection
Database references
Derived calculations
1
0
2003-10-14
1
1
2008-04-29
1
2
2011-07-13
1
3
2021-10-27
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_pdbx_nmr_software.name
_struct_ref_seq_dif.details
The Monomeric Wildtype Protein
The Tetrameric Mutant Protein
RCSB
Y
RCSB
2003-07-18
REL
REL
The structure was determined using triple-resonance NMR spectroscopy.
structures with the lowest energy,target function
100
40
3D_13C-separated_NOESY
3D_15N-separated_NOESY
3D_13C-separated/12C-filtered_NOESY
3D_13C-separated/12C-filtered_NOESY
2D NOESY
2D NOESY
50mM sodium phosphate buffer
5.5
ambient
298
K
The structures are based on a total of 1311 constraints per monomeric subunit: 1035 NOE-derived distance constraints, 72 hydrogen bond distance constraints, 148 dihedral angle constraints, and 56 residual N-H dipolar coupling constraints.
simulated annealing
1
minimized average structure
1.7mM (in monomer) U-15N,13C, 50mM phosphate buffer, 0.02% NaN3, 92.5% H2O, 7.5% D2O
92.5% H2O, 7.5% D2O
0.85mM (in monomer) U-15N,13C, 0.85mM (in monomer) unlabeled, 50mM phosphate buffer (pH 5.5), 0.02 % NaN3, 92.5% H2O, 7.5% D2O
92.5% H2O, 7.5% D2O
0.85mM (in monomer) U-15N,13C, 0.85mM (in monomer) unlabeled, 50mM phosphate buffer, 0.02% NaN3, 100% D2O
100% D2O
1.7mM (in monomer) unlabeled, 50mM phosphate buffer, 0.02% NaN3, 92.5% H2O, 7.5% D2O
92.5% H2O, 7.5% D2O
1.7mM (in monomer) unlabeled, 50mM phosphate buffer, 0.02% NaN3, 100% D2O
100% D2O
Bruker
collection
XwinNMR
2.6 and 3.1
Delaglio
processing
NMRPipe
2.2
Garrett
data analysis
PIPP
4.3.2
Brunger
structure solution
CNS
1.1
Brunger
refinement
CNS
1.1
800
Bruker
DRX
750
Bruker
DMX
600
Bruker
DRX
600
Bruker
DMX
500
Bruker
DMX
MET
1
n
1
MET
1
A
GLN
2
n
2
GLN
2
A
TYR
3
n
3
TYR
3
A
LYS
4
n
4
LYS
4
A
VAL
5
n
5
VAL
5
A
ILE
6
n
6
ILE
6
A
LEU
7
n
7
LEU
7
A
ASN
8
n
8
ASN
8
A
GLY
9
n
9
GLY
9
A
LYS
10
n
10
LYS
10
A
THR
11
n
11
THR
11
A
LEU
12
n
12
LEU
12
A
LYS
13
n
13
LYS
13
A
GLY
14
n
14
GLY
14
A
GLU
15
n
15
GLU
15
A
THR
16
n
16
THR
16
A
THR
17
n
17
THR
17
A
THR
18
n
18
THR
18
A
GLU
19
n
19
GLU
19
A
ALA
20
n
20
ALA
20
A
VAL
21
n
21
VAL
21
A
ASP
22
n
22
ASP
22
A
ALA
23
n
23
ALA
23
A
ALA
24
n
24
ALA
24
A
THR
25
n
25
THR
25
A
ALA
26
n
26
ALA
26
A
GLU
27
n
27
GLU
27
A
LYS
28
n
28
LYS
28
A
VAL
29
n
29
VAL
29
A
VAL
30
n
30
VAL
30
A
LYS
31
n
31
LYS
31
A
GLN
32
n
32
GLN
32
A
PHE
33
n
33
PHE
33
A
PHE
34
n
34
PHE
34
A
ASN
35
n
35
ASN
35
A
ASP
36
n
36
ASP
36
A
ASN
37
n
37
ASN
37
A
GLY
38
n
38
GLY
38
A
VAL
39
n
39
VAL
39
A
ASP
40
n
40
ASP
40
A
GLY
41
n
41
GLY
41
A
GLU
42
n
42
GLU
42
A
TRP
43
n
43
TRP
43
A
THR
44
n
44
THR
44
A
TYR
45
n
45
TYR
45
A
ASP
46
n
46
ASP
46
A
ASP
47
n
47
ASP
47
A
ALA
48
n
48
ALA
48
A
THR
49
n
49
THR
49
A
LYS
50
n
50
LYS
50
A
THR
51
n
51
THR
51
A
PHE
52
n
52
PHE
52
A
THR
53
n
53
THR
53
A
VAL
54
n
54
VAL
54
A
THR
55
n
55
THR
55
A
GLU
56
n
56
GLU
56
A
MET
1
n
1
MET
1
B
GLN
2
n
2
GLN
2
B
TYR
3
n
3
TYR
3
B
LYS
4
n
4
LYS
4
B
VAL
5
n
5
VAL
5
B
ILE
6
n
6
ILE
6
B
LEU
7
n
7
LEU
7
B
ASN
8
n
8
ASN
8
B
GLY
9
n
9
GLY
9
B
LYS
10
n
10
LYS
10
B
THR
11
n
11
THR
11
B
LEU
12
n
12
LEU
12
B
LYS
13
n
13
LYS
13
B
GLY
14
n
14
GLY
14
B
GLU
15
n
15
GLU
15
B
THR
16
n
16
THR
16
B
THR
17
n
17
THR
17
B
THR
18
n
18
THR
18
B
GLU
19
n
19
GLU
19
B
ALA
20
n
20
ALA
20
B
VAL
21
n
21
VAL
21
B
ASP
22
n
22
ASP
22
B
ALA
23
n
23
ALA
23
B
ALA
24
n
24
ALA
24
B
THR
25
n
25
THR
25
B
ALA
26
n
26
ALA
26
B
GLU
27
n
27
GLU
27
B
LYS
28
n
28
LYS
28
B
VAL
29
n
29
VAL
29
B
VAL
30
n
30
VAL
30
B
LYS
31
n
31
LYS
31
B
GLN
32
n
32
GLN
32
B
PHE
33
n
33
PHE
33
B
PHE
34
n
34
PHE
34
B
ASN
35
n
35
ASN
35
B
ASP
36
n
36
ASP
36
B
ASN
37
n
37
ASN
37
B
GLY
38
n
38
GLY
38
B
VAL
39
n
39
VAL
39
B
ASP
40
n
40
ASP
40
B
GLY
41
n
41
GLY
41
B
GLU
42
n
42
GLU
42
B
TRP
43
n
43
TRP
43
B
THR
44
n
44
THR
44
B
TYR
45
n
45
TYR
45
B
ASP
46
n
46
ASP
46
B
ASP
47
n
47
ASP
47
B
ALA
48
n
48
ALA
48
B
THR
49
n
49
THR
49
B
LYS
50
n
50
LYS
50
B
THR
51
n
51
THR
51
B
PHE
52
n
52
PHE
52
B
THR
53
n
53
THR
53
B
VAL
54
n
54
VAL
54
B
THR
55
n
55
THR
55
B
GLU
56
n
56
GLU
56
B
author_defined_assembly
2
dimeric
1.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
1_555
identity operation
0.0000000000
0.0000000000
0.0000000000
A
N
THR
44
A
N
THR
44
A
O
THR
53
A
O
THR
53
A
N
PHE
52
A
N
PHE
52
B
O
ILE
6
B
O
ILE
6
B
N
VAL
5
B
N
VAL
5
B
O
THR
16
B
O
THR
16
B
O
LYS
13
B
O
LYS
13
A
N
THR
17
A
N
THR
17
A
O
THR
16
A
O
THR
16
A
N
VAL
5
A
N
VAL
5
A
N
ILE
6
A
N
ILE
6
B
O
PHE
52
B
O
PHE
52
B
O
THR
53
B
O
THR
53
B
N
THR
44
B
N
THR
44
1
A
B
H
O
ILE
PHE
6
52
1.57
1
A
B
O
H
PHE
ILE
52
6
1.57
1
B
B
OD1
H
ASP
THR
22
25
1.58
1
A
A
OD1
H
ASP
THR
22
25
1.58
1
A
A
O
H
PHE
GLY
34
38
1.60
2
A
B
H
O
ILE
PHE
6
52
1.53
2
A
B
O
H
PHE
ILE
52
6
1.53
2
A
A
H3
O
MET
ALA
1
20
1.58
2
B
B
H3
O
MET
ALA
1
20
1.58
3
A
B
O
H
PHE
ILE
52
6
1.55
3
A
B
H
O
ILE
PHE
6
52
1.55
3
A
A
OD1
H
ASP
THR
22
25
1.58
3
B
B
OD1
H
ASP
THR
22
25
1.58
4
A
A
OD1
H
ASP
THR
22
25
1.59
4
B
B
OD1
H
ASP
THR
22
25
1.59
4
A
A
O
H
ALA
GLU
23
27
1.60
4
B
B
O
H
ALA
GLU
23
27
1.60
5
A
B
H
O
ILE
PHE
6
52
1.55
5
A
B
O
H
PHE
ILE
52
6
1.55
6
A
A
O
H
ALA
GLU
23
27
1.58
6
B
B
O
H
ALA
GLU
23
27
1.58
7
A
A
OD1
H
ASP
THR
22
25
1.58
7
B
B
OD1
H
ASP
THR
22
25
1.58
7
A
B
H
O
THR
LYS
17
13
1.58
7
A
B
O
H
LYS
THR
13
17
1.58
7
A
B
O
H
GLU
GLU
15
15
1.59
7
A
B
H
O
GLU
GLU
15
15
1.59
7
A
B
O
H
PHE
ILE
52
6
1.60
7
A
B
H
O
ILE
PHE
6
52
1.60
8
A
B
O
H
LYS
THR
13
17
1.59
8
A
B
H
O
THR
LYS
17
13
1.59
10
A
B
H
O
ILE
PHE
6
52
1.54
10
A
B
O
H
PHE
ILE
52
6
1.54
10
B
B
OD1
H
ASP
THR
22
25
1.57
10
A
A
OD1
H
ASP
THR
22
25
1.57
11
A
B
H
O
ILE
PHE
6
52
1.55
11
A
B
O
H
PHE
ILE
52
6
1.55
12
A
B
H
O
ILE
PHE
6
52
1.54
12
A
B
O
H
PHE
ILE
52
6
1.54
12
B
B
O
H
PHE
GLY
34
38
1.58
12
A
A
O
H
PHE
GLY
34
38
1.58
13
A
B
O
H
PHE
ILE
52
6
1.53
13
A
B
H
O
ILE
PHE
6
52
1.53
14
A
B
H
O
ILE
PHE
6
52
1.56
14
A
B
O
H
PHE
ILE
52
6
1.56
14
A
A
OD1
H
ASP
THR
22
25
1.56
14
B
B
OD1
H
ASP
THR
22
25
1.57
15
A
B
O
H
PHE
ILE
52
6
1.57
15
A
B
H
O
ILE
PHE
6
52
1.57
15
A
A
OD1
H
ASP
THR
22
25
1.57
15
B
B
OD1
H
ASP
THR
22
25
1.57
15
B
B
H
O
VAL
THR
5
16
1.59
15
A
A
H
O
VAL
THR
5
16
1.59
16
B
B
OD1
H
ASP
THR
22
25
1.57
16
A
A
OD1
H
ASP
THR
22
25
1.57
17
A
B
H
O
ILE
PHE
6
52
1.59
17
A
B
O
H
PHE
ILE
52
6
1.59
17
B
B
OD1
H
ASP
THR
22
25
1.59
17
A
A
OD1
H
ASP
THR
22
25
1.60
19
A
B
O
H
PHE
ILE
52
6
1.51
19
A
B
H
O
ILE
PHE
6
52
1.51
19
A
B
H
O
THR
LYS
17
13
1.60
19
A
B
O
H
LYS
THR
13
17
1.60
19
B
B
O
H
VAL
THR
5
16
1.60
19
A
A
O
H
VAL
THR
5
16
1.60
20
A
A
HE22
OE2
GLN
GLU
32
56
1.59
20
B
B
HE22
OE2
GLN
GLU
32
56
1.59
21
A
B
O
H
PHE
ILE
52
6
1.55
21
A
B
H
O
ILE
PHE
6
52
1.55
21
A
A
O
H
VAL
THR
5
16
1.57
21
A
A
OD1
H
ASP
THR
22
25
1.57
21
B
B
OD1
H
ASP
THR
22
25
1.57
21
B
B
O
H
VAL
THR
5
16
1.57
22
B
B
O
H
VAL
THR
5
16
1.57
22
A
A
O
H
VAL
THR
5
16
1.57
22
A
B
O
H
LYS
THR
13
17
1.60
22
A
B
H
O
THR
LYS
17
13
1.60
23
A
B
H
O
ILE
PHE
6
52
1.51
23
A
B
O
H
PHE
ILE
52
6
1.51
23
B
B
O
H
VAL
THR
5
16
1.60
23
A
A
O
H
VAL
THR
5
16
1.60
24
A
B
O
H
PHE
ILE
52
6
1.52
24
A
B
H
O
ILE
PHE
6
52
1.52
25
B
B
OD1
H
ASP
THR
22
25
1.57
25
A
A
OD1
H
ASP
THR
22
25
1.57
26
B
B
O
H
ALA
LYS
24
28
1.57
26
A
A
O
H
ALA
LYS
24
28
1.57
26
A
A
OD1
H
ASP
THR
22
25
1.57
26
B
B
OD1
H
ASP
THR
22
25
1.58
27
A
B
H
O
ILE
PHE
6
52
1.54
27
A
B
O
H
PHE
ILE
52
6
1.54
27
B
B
O
H
VAL
THR
5
16
1.59
27
A
A
O
H
VAL
THR
5
16
1.59
27
A
A
OD1
H
ASP
THR
22
25
1.59
27
B
B
OD1
H
ASP
THR
22
25
1.59
28
A
B
O
H
PHE
ILE
52
6
1.52
28
A
B
H
O
ILE
PHE
6
52
1.52
28
B
B
OD1
H
ASP
THR
22
25
1.58
28
A
A
OD1
H
ASP
THR
22
25
1.58
29
A
A
OD1
H
ASP
THR
22
25
1.57
29
B
B
OD1
H
ASP
THR
22
25
1.57
29
A
B
H
O
THR
LYS
17
13
1.58
29
A
B
O
H
LYS
THR
13
17
1.59
31
A
B
H
O
ILE
PHE
6
52
1.57
31
A
B
O
H
PHE
ILE
52
6
1.57
31
B
B
O
H
VAL
THR
5
16
1.59
31
A
A
O
H
VAL
THR
5
16
1.59
31
A
B
H
O
THR
LYS
17
13
1.59
31
A
B
O
H
LYS
THR
13
17
1.60
32
A
B
H
O
ILE
PHE
6
52
1.58
32
A
B
O
H
PHE
ILE
52
6
1.58
32
A
A
O
H
VAL
THR
5
16
1.60
32
B
B
O
H
VAL
THR
5
16
1.60
33
A
B
H
O
ILE
PHE
6
52
1.58
33
A
B
O
H
PHE
ILE
52
6
1.59
34
A
B
O
H
PHE
ILE
52
6
1.53
34
A
B
H
O
ILE
PHE
6
52
1.53
35
A
B
O
H
LYS
THR
13
17
1.58
35
A
B
H
O
THR
LYS
17
13
1.58
36
B
B
OD1
H
ASP
THR
22
25
1.57
36
A
A
OD1
H
ASP
THR
22
25
1.57
37
A
B
H
O
ILE
PHE
6
52
1.55
37
A
B
O
H
PHE
ILE
52
6
1.55
37
B
B
O
H
PHE
GLY
34
38
1.59
37
A
A
O
H
PHE
GLY
34
38
1.59
38
A
A
H
O
VAL
THR
5
16
1.54
38
B
B
H
O
VAL
THR
5
16
1.54
38
B
B
O
H
ALA
GLU
23
27
1.57
38
A
A
O
H
ALA
GLU
23
27
1.57
38
A
A
OD1
H
ASP
THR
22
25
1.57
38
B
B
OD1
H
ASP
THR
22
25
1.57
38
A
B
H
O
THR
LYS
17
13
1.58
38
A
B
O
H
LYS
THR
13
17
1.58
39
B
B
OD1
H
ASP
THR
22
25
1.57
39
A
A
OD1
H
ASP
THR
22
25
1.57
40
A
B
H
O
ILE
PHE
6
52
1.51
40
A
B
O
H
PHE
ILE
52
6
1.51
40
A
A
OD1
H
ASP
THR
22
25
1.57
40
B
B
OD1
H
ASP
THR
22
25
1.57
40
B
B
O
H
ALA
GLU
23
27
1.60
40
A
A
O
H
ALA
GLU
23
27
1.60
27
A
PHE
33
-51.61
-72.21
27
B
PHE
33
-51.57
-72.32
minimized average
Ensemble of 40 Structures of the Dimeric Mutant of the B1 Domain of Streptococcal Protein G
1
N
N
1
N
N
A
ASP
22
A
ASP
22
HELX_P
A
GLY
38
A
GLY
38
1
1
17
A
ASP
47
A
ASP
47
HELX_P
A
THR
49
A
THR
49
5
2
3
B
ASP
22
B
ASP
22
HELX_P
B
GLY
38
B
GLY
38
1
3
17
B
ASP
47
B
ASP
47
HELX_P
B
THR
49
B
THR
49
5
4
3
PROTEIN BINDING
GB1, core mutants, domain-swapping, oligomerization, PROTEIN BINDING
SPG1_STRSG
UNP
1
228
P06654
TYKLILNGKTLKGETTTEAVDAATAEKVFKQYANDNGVDGEWTYDDATKTFTVTE
228
282
1Q10
2
56
P06654
A
1
2
56
228
282
1Q10
2
56
P06654
B
1
2
56
1
initiating methionine
MET
1
1Q10
A
P06654
UNP
1
1
THR
engineered mutation
GLN
2
1Q10
A
P06654
UNP
228
2
1
LEU
engineered mutation
VAL
5
1Q10
A
P06654
UNP
231
5
1
PHE
engineered mutation
VAL
30
1Q10
A
P06654
UNP
256
30
1
TYR
engineered mutation
PHE
33
1Q10
A
P06654
UNP
259
33
1
ALA
engineered mutation
PHE
34
1Q10
A
P06654
UNP
260
34
2
initiating methionine
MET
1
1Q10
B
P06654
UNP
1
2
THR
engineered mutation
GLN
2
1Q10
B
P06654
UNP
228
2
2
LEU
engineered mutation
VAL
5
1Q10
B
P06654
UNP
231
5
2
PHE
engineered mutation
VAL
30
1Q10
B
P06654
UNP
256
30
2
TYR
engineered mutation
PHE
33
1Q10
B
P06654
UNP
259
33
2
ALA
engineered mutation
PHE
34
1Q10
B
P06654
UNP
260
34
8
anti-parallel
parallel
anti-parallel
anti-parallel
anti-parallel
parallel
anti-parallel
A
GLU
42
A
GLU
42
A
ASP
46
A
ASP
46
A
THR
51
A
THR
51
A
THR
55
A
THR
55
B
GLN
2
B
GLN
2
B
ASN
8
B
ASN
8
B
LEU
12
B
LEU
12
B
GLU
19
B
GLU
19
A
LEU
12
A
LEU
12
A
GLU
19
A
GLU
19
A
GLN
2
A
GLN
2
A
ASN
8
A
ASN
8
B
THR
51
B
THR
51
B
THR
55
B
THR
55
B
GLU
42
B
GLU
42
B
ASP
46
B
ASP
46