1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
Conibear, A.C.
Rosengren, K.
Daly, N.L.
Troiera Henriques, S.
Craik, D.J.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
C4 H9 N O2
103.120
n
ALPHA-AMINOBUTYRIC ACID
L-peptide linking
C6 H15 N4 O2 1
175.209
y
ARGININE
L-peptide linking
C2 H5 N O2
75.067
y
GLYCINE
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
C
N
7
N
O
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
H
N
15
N
H
N
16
N
H
N
17
N
N
N
18
S
C
N
19
N
C
N
20
N
O
N
21
N
C
N
22
N
C
N
23
N
C
N
24
N
N
N
25
N
C
N
26
N
N
N
27
N
N
N
28
N
O
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
H
N
42
N
H
N
43
N
H
N
44
N
N
N
45
N
C
N
46
N
C
N
47
N
O
N
48
N
O
N
49
N
H
N
50
N
H
N
51
N
H
N
52
N
H
N
53
N
H
N
54
N
N
N
55
S
C
N
56
N
C
N
57
N
O
N
58
N
C
N
59
N
C
N
60
N
C
N
61
N
O
N
62
N
H
N
63
N
H
N
64
N
H
N
65
N
H
N
66
N
H
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
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
sing
N
20
N
sing
N
21
N
sing
N
22
N
doub
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
sing
N
34
N
sing
N
35
N
sing
N
36
N
doub
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
sing
N
46
N
sing
N
47
N
sing
N
48
N
doub
N
49
N
sing
N
50
N
sing
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
doub
N
58
N
sing
N
59
N
sing
N
60
N
sing
N
61
N
sing
N
62
N
sing
N
63
N
sing
N
64
N
sing
N
65
N
sing
N
66
N
sing
N
67
N
sing
N
68
N
sing
US
J.Biol.Chem.
JBCHA3
0071
0021-9258
288
10830
10840
10.1074/jbc.M113.451047
23430740
The cyclic cystine ladder in theta-defensins is important for structure and stability, but not antibacterial activity.
2013
10.2210/pdb2m2x/pdb
pdb_00002m2x
1982.434
[Aba3,5,7,12,14,16]BTD-2
1
syn
polymer
no
yes
GV(ABA)R(ABA)V(ABA)RRGV(ABA)R(ABA)V(ABA)RR
GVARAVARRGVARAVARR
A
polypeptide(L)
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
Head-to-tail (Arg-Gly) cyclic peptide. Residues 3, 5, 7, 12, 14, and 16 are replaced by alpha-aminobutyric acid.
pdbx_database_related
pdbx_entity_src_syn
pdbx_nmr_sample_details
pdbx_nmr_software
pdbx_nmr_spectrometer
struct_conn
database_2
pdbx_database_status
chem_comp_atom
chem_comp_bond
repository
Initial release
Database references
Database references
Data collection
Database references
Derived calculations
Experimental preparation
Source and taxonomy
Database references
Other
Data collection
1
0
2013-02-27
1
1
2013-03-20
1
2
2013-07-10
1
3
2019-11-06
1
4
2023-06-14
1
5
2023-11-15
_pdbx_entity_src_syn.ncbi_taxonomy_id
_pdbx_entity_src_syn.organism_scientific
_pdbx_nmr_sample_details.contents
_pdbx_nmr_software.name
_pdbx_nmr_spectrometer.model
_struct_conn.pdbx_leaving_atom_flag
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_pdbx_database_status.status_code_nmr_data
High resolution NMR structure of a symmetrical theta-defensin, BTD-2
BMRB
Y
RCSB
2013-01-03
REL
REL
REL
REL
solid phase peptide synthesis
32630
synthetic construct
sample
Antimicrobial
[Aba3,5,7,12,14,16]BTD-2
Cyclic peptide
100
60
6
6
28
0
4
0
11
10
structures with the lowest energy
50
20
2D 1H-1H TOCSY
2D 1H-1H NOESY
2D 1H-13C HSQC
2D DQF-COSY
2D 1H-1H ECOSY
0.4
mM
10
uM
0.5
mM
10
uM
5
ambient
298
K
Structures were calculated using the scripts from the RECOORD database. Used to calculate preliminary structures
simulated annealing, torsion angle dynamics
1
lowest energy
0.4 mM [Aba3,5,7,12,14,16]BTD-2-1, 10 uM DSS-2, 90% H2O/10% D2O
90% H2O/10% D2O
0.5 mM [Aba3,5,7,12,14,16]BTD-2-3, 10 uM DSS-4, 100% D2O
100% D2O
CCPN
data analysis
CcpNmr
2.1
CCPN
chemical shift assignment
CcpNmr
2.1
CCPN
peak picking
CcpNmr
2.1
Bruker Biospin
collection
TopSpin
2.1
Bruker Biospin
processing
TopSpin
2.1
Guntert, Mumenthaler and Wuthrich
structure solution
CYANA
3.0
Brunger, Adams, Clore, Gros, Nilges and Read
refinement
CNS
2.1
Guntert, Mumenthaler and Wuthrich
refinement
CYANA
3.0
500
Bruker
AVANCE
Bruker Avance
600
Bruker
AVANCE
Bruker Avance
GLY
1
n
1
GLY
1
A
VAL
2
n
2
VAL
2
A
ABA
3
n
3
ABA
3
A
ARG
4
n
4
ARG
4
A
ABA
5
n
5
ABA
5
A
VAL
6
n
6
VAL
6
A
ABA
7
n
7
ABA
7
A
ARG
8
n
8
ARG
8
A
ARG
9
n
9
ARG
9
A
GLY
10
n
10
GLY
10
A
VAL
11
n
11
VAL
11
A
ABA
12
n
12
ABA
12
A
ARG
13
n
13
ARG
13
A
ABA
14
n
14
ABA
14
A
VAL
15
n
15
VAL
15
A
ABA
16
n
16
ABA
16
A
ARG
17
n
17
ARG
17
A
ARG
18
n
18
ARG
18
A
author_defined_assembly
1
monomeric
A
ABA
3
ALPHA-AMINOBUTYRIC ACID
A
ABA
3
ALA
A
ABA
5
ALPHA-AMINOBUTYRIC ACID
A
ABA
5
ALA
A
ABA
7
ALPHA-AMINOBUTYRIC ACID
A
ABA
7
ALA
A
ABA
12
ALPHA-AMINOBUTYRIC ACID
A
ABA
12
ALA
A
ABA
14
ALPHA-AMINOBUTYRIC ACID
A
ABA
14
ALA
A
ABA
16
ALPHA-AMINOBUTYRIC ACID
A
ABA
16
ALA
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
VAL
2
A
N
VAL
2
A
O
ARG
17
A
O
ARG
17
2
A
ABA
14
-143.58
57.71
4
A
ABA
7
-118.68
74.31
4
A
ABA
14
-95.39
39.16
4
A
ABA
16
-150.83
80.96
5
A
ABA
16
-160.16
83.24
6
A
ARG
13
-56.69
104.46
6
A
ABA
14
-154.30
45.99
6
A
ABA
16
-101.47
63.51
7
A
VAL
11
-173.62
128.67
8
A
ARG
4
-66.45
99.23
8
A
VAL
11
-147.33
39.83
9
A
ARG
9
-57.00
97.96
9
A
ABA
14
-93.10
50.37
10
A
ABA
5
-102.69
53.06
10
A
ABA
7
-102.53
66.62
11
A
ABA
5
-76.45
-163.69
12
A
ABA
7
-118.70
73.93
12
A
VAL
11
-114.91
77.01
12
A
ABA
14
-103.60
78.86
12
A
ABA
16
-112.28
70.29
13
A
ABA
16
-63.92
89.09
15
A
ARG
13
-63.69
94.79
15
A
ABA
16
-101.65
65.38
16
A
ABA
12
-104.30
-169.01
17
A
ABA
7
-116.79
65.75
17
A
ABA
12
-111.67
50.00
18
A
VAL
2
-151.59
79.51
18
A
ABA
5
-111.85
77.44
18
A
ARG
17
-28.32
114.55
19
A
ABA
7
-68.21
94.43
19
A
ABA
14
-115.37
63.95
lowest energy, model1
Solution structure of the antimicrobial peptide [Aba3,5,7,12,14,16]BTD-2
1
N
N
covale
1.302
both
A
GLY
1
A
N
GLY
1
1_555
A
ARG
18
A
C
ARG
18
1_555
covale
1.301
both
sing
A
VAL
2
A
C
VAL
2
1_555
A
ABA
3
A
N
ABA
3
1_555
covale
1.300
both
sing
A
ABA
3
A
C
ABA
3
1_555
A
ARG
4
A
N
ARG
4
1_555
covale
1.306
both
sing
A
ARG
4
A
C
ARG
4
1_555
A
ABA
5
A
N
ABA
5
1_555
covale
1.306
both
sing
A
ABA
5
A
C
ABA
5
1_555
A
VAL
6
A
N
VAL
6
1_555
covale
1.284
both
sing
A
VAL
6
A
C
VAL
6
1_555
A
ABA
7
A
N
ABA
7
1_555
covale
1.302
both
sing
A
ABA
7
A
C
ABA
7
1_555
A
ARG
8
A
N
ARG
8
1_555
covale
1.302
both
sing
A
VAL
11
A
C
VAL
11
1_555
A
ABA
12
A
N
ABA
12
1_555
covale
1.298
both
sing
A
ABA
12
A
C
ABA
12
1_555
A
ARG
13
A
N
ARG
13
1_555
covale
1.310
both
sing
A
ARG
13
A
C
ARG
13
1_555
A
ABA
14
A
N
ABA
14
1_555
covale
1.304
both
sing
A
ABA
14
A
C
ABA
14
1_555
A
VAL
15
A
N
VAL
15
1_555
covale
1.276
both
sing
A
VAL
15
A
C
VAL
15
1_555
A
ABA
16
A
N
ABA
16
1_555
covale
1.300
both
sing
A
ABA
16
A
C
ABA
16
1_555
A
ARG
17
A
N
ARG
17
1_555
ANTIMICROBIAL PROTEIN
theta-defensin, cyclic peptides, cyclic cystine ladder, disulfide bond, antimicrobial peptide, ANTIMICROBIAL PROTEIN
2M2X
PDB
1
2M2X
GVXRXVXRRGVXRXVXRR
1
18
2M2X
1
18
2M2X
A
1
1
18
2
anti-parallel
A
VAL
2
A
VAL
2
A
ABA
3
A
ABA
3
A
ABA
16
A
ABA
16
A
ARG
17
A
ARG
17