1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
Felizmenio-Quimio, M.E.
Daly, N.L.
Craik, D.J.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
1
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
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 H9 N O2
115.130
y
PROLINE
L-peptide linking
C3 H7 N O3
105.093
y
SERINE
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
US
J.Biol.Chem.
JBCHA3
0071
0021-9258
276
22875
22882
10.1074/jbc.M101666200
11292835
Circular proteins in plants: solution structure of a novel macrocyclic trypsin inhibitor from Momordica cochinchinensis.
2001
10.2210/pdb1ib9/pdb
pdb_00001ib9
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
3483.040
TRYPSIN INHIBITOR II
1
nat
polymer
MCOTI-II
no
no
SGSDGGVCPKILKKCRRDSDCPGACICRGNGYCG
SGSDGGVCPKILKKCRRDSDCPGACICRGNGYCG
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
spiny bitter cucumber
THE PROTEIN IS ISOLATED FROM THE SEEDS USING SODIUM ACETATE.
Momordica
sample
3674
Momordica cochinchinensis
database_2
pdbx_nmr_software
pdbx_nmr_spectrometer
pdbx_struct_assembly
pdbx_struct_oper_list
repository
Initial release
Version format compliance
Version format compliance
Other
Data collection
Database references
Derived calculations
1
0
2001-07-18
1
1
2008-04-27
1
2
2011-07-13
1
3
2013-02-27
1
4
2022-02-23
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_pdbx_nmr_software.name
_pdbx_nmr_spectrometer.model
RCSB
Y
RCSB
2001-03-28
REL
REL
Antimicrobial, Antitumor
CYCLIC KNOTTIN TRYPSIN INHIBITOR II
Cyclic peptide
The submitted conformer models are those with the fewest number of restraint violations.
50
20
2D NOESY
DQF-COSY
E-COSY
3.5
ambient
293
K
The structures are based on a total of 420 restraints, 383 are NOE-derived,
25 dihedral angle restraints and 12 from hydrogen bonds.
torsion angle dynamics
17
lowest energy
1 mM MCoTI-II, 90% H2O, 10% D2O
90% H2O/10% D2O
Bruker
collection
XwinNMR
2.6
Eccles, Guntert, Billeter, and Wuthrich
data analysis
XEASY
1.3.7
Guntert, Mumenthaler, and Wuthrich
structure solution
DYANA
1.5
Brunger
structure solution
X-PLOR
3.851
Brunger
refinement
X-PLOR
3.851
750
Bruker
AVANCE
SER
1
n
1
SER
1
A
GLY
2
n
2
GLY
2
A
SER
3
n
3
SER
3
A
ASP
4
n
4
ASP
4
A
GLY
5
n
5
GLY
5
A
GLY
6
n
6
GLY
6
A
VAL
7
n
7
VAL
7
A
CYS
8
n
8
CYS
8
A
PRO
9
n
9
PRO
9
A
LYS
10
n
10
LYS
10
A
ILE
11
n
11
ILE
11
A
LEU
12
n
12
LEU
12
A
LYS
13
n
13
LYS
13
A
LYS
14
n
14
LYS
14
A
CYS
15
n
15
CYS
15
A
ARG
16
n
16
ARG
16
A
ARG
17
n
17
ARG
17
A
ASP
18
n
18
ASP
18
A
SER
19
n
19
SER
19
A
ASP
20
n
20
ASP
20
A
CYS
21
n
21
CYS
21
A
PRO
22
n
22
PRO
22
A
GLY
23
n
23
GLY
23
A
ALA
24
n
24
ALA
24
A
CYS
25
n
25
CYS
25
A
ILE
26
n
26
ILE
26
A
CYS
27
n
27
CYS
27
A
ARG
28
n
28
ARG
28
A
GLY
29
n
29
GLY
29
A
ASN
30
n
30
ASN
30
A
GLY
31
n
31
GLY
31
A
TYR
32
n
32
TYR
32
A
CYS
33
n
33
CYS
33
A
GLY
34
n
34
GLY
34
A
author_defined_assembly
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
A
O
ILE
26
A
O
ILE
26
A
N
GLY
34
A
N
GLY
34
1
A
A
N
C
SER
GLY
1
34
1.31
2
A
A
N
C
SER
GLY
1
34
1.31
3
A
A
N
C
SER
GLY
1
34
1.31
4
A
A
N
C
SER
GLY
1
34
1.31
5
A
A
N
C
SER
GLY
1
34
1.31
6
A
A
N
C
SER
GLY
1
34
1.32
7
A
A
N
C
SER
GLY
1
34
1.31
8
A
A
N
C
SER
GLY
1
34
1.31
9
A
A
N
C
SER
GLY
1
34
1.32
10
A
A
N
C
SER
GLY
1
34
1.31
11
A
A
N
C
SER
GLY
1
34
1.31
12
A
A
N
C
SER
GLY
1
34
1.31
13
A
A
N
C
SER
GLY
1
34
1.31
14
A
A
N
C
SER
GLY
1
34
1.31
15
A
A
N
C
SER
GLY
1
34
1.31
16
A
A
N
C
SER
GLY
1
34
1.31
17
A
A
N
C
SER
GLY
1
34
1.31
18
A
A
N
C
SER
GLY
1
34
1.31
19
A
A
N
C
SER
GLY
1
34
1.31
20
A
A
N
C
SER
GLY
1
34
1.31
8
A
A
CYS
PRO
8
9
142.11
1
8.75
1.10
114.20
122.95
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
2
10.64
1.10
114.20
124.84
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
3
8.06
1.10
114.20
122.26
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
4
8.72
1.10
114.20
122.92
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
5
8.53
1.10
114.20
122.73
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
6
9.71
1.10
114.20
123.91
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
7
8.40
1.10
114.20
122.60
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
8
10.57
1.10
114.20
124.77
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
9
8.61
1.10
114.20
122.81
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
10
10.77
1.10
114.20
124.97
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
11
11.39
1.10
114.20
125.59
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
12
9.77
1.10
114.20
123.97
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
13
10.68
1.10
114.20
124.88
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
14
8.94
1.10
114.20
123.14
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
15
10.22
1.10
114.20
124.42
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
16
9.34
1.10
114.20
123.54
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
17
10.71
1.10
114.20
124.91
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
18
8.55
1.10
114.20
122.75
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
19
10.54
1.10
114.20
124.74
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
20
9.15
1.10
114.20
123.35
A
A
A
CA
CB
SG
CYS
CYS
CYS
33
33
33
N
1
A
PRO
9
-70.48
-159.81
1
A
LEU
12
-162.64
24.26
1
A
CYS
33
-40.69
159.81
2
A
LYS
10
-59.04
108.14
2
A
LEU
12
-107.27
41.56
3
A
LEU
12
-87.19
36.78
3
A
CYS
33
-37.71
164.91
4
A
PRO
9
-68.98
-167.89
4
A
LEU
12
-94.84
46.02
4
A
CYS
33
-37.31
155.39
5
A
SER
3
-150.25
-136.00
5
A
PRO
9
-54.62
102.24
5
A
LYS
10
-63.65
83.12
5
A
ILE
26
-122.91
-168.54
5
A
CYS
33
-40.93
154.73
6
A
ASP
4
69.33
-22.88
6
A
PRO
9
-65.01
-161.12
6
A
LEU
12
-173.79
21.25
6
A
CYS
33
-41.14
153.23
7
A
SER
3
-89.91
-133.33
7
A
LEU
12
-89.83
38.32
7
A
CYS
33
-39.95
153.44
8
A
PRO
9
-56.45
87.35
8
A
LEU
12
-86.13
39.77
8
A
CYS
33
-46.10
150.10
9
A
SER
3
-150.29
-48.83
9
A
ILE
26
-131.04
-159.99
9
A
CYS
33
-40.62
158.10
10
A
SER
3
-142.32
-16.67
10
A
VAL
7
-92.16
44.12
10
A
LEU
12
-104.96
49.60
10
A
CYS
33
-46.78
161.15
11
A
SER
19
-86.75
32.52
11
A
CYS
33
-48.43
153.89
12
A
SER
3
-150.56
-152.76
12
A
VAL
7
-90.06
37.86
12
A
PRO
9
-64.35
-157.81
12
A
LYS
10
-143.18
33.00
12
A
SER
19
-79.62
20.88
12
A
CYS
33
-47.60
157.24
13
A
SER
3
-89.78
-148.02
13
A
PRO
9
-64.20
95.41
13
A
LEU
12
-67.30
81.96
13
A
CYS
33
-44.49
154.35
14
A
CYS
33
-41.22
152.29
15
A
LYS
14
-36.32
144.40
15
A
ARG
16
-91.48
-63.46
15
A
ARG
28
-59.08
170.04
16
A
PRO
9
-79.67
28.03
16
A
LEU
12
-62.96
70.25
16
A
ILE
26
-121.31
-169.78
17
A
SER
3
-89.47
-115.29
17
A
VAL
7
-94.24
48.85
18
A
SER
3
-150.99
-127.18
18
A
LEU
12
-86.65
39.43
18
A
ILE
26
-130.94
-159.93
18
A
CYS
33
-36.03
148.25
19
A
SER
3
-150.36
-135.22
19
A
VAL
7
-92.22
48.65
19
A
LEU
12
-103.73
47.30
19
A
CYS
25
-49.30
151.73
19
A
CYS
33
-48.67
152.93
20
A
VAL
7
-93.62
46.48
20
A
LEU
12
-67.70
86.33
SOLUTION STRUCTURE OF MCOTI-II, A MACROCYCLIC TRYPSIN INHIBITOR
1
N
N
A
ARG
17
A
ARG
17
HELX_P
A
CYS
21
A
CYS
21
5
1
5
disulf
2.016
A
CYS
8
A
SG
CYS
8
1_555
A
CYS
25
A
SG
CYS
25
1_555
disulf
2.018
A
CYS
15
A
SG
CYS
15
1_555
A
CYS
27
A
SG
CYS
27
1_555
disulf
2.014
A
CYS
21
A
SG
CYS
21
1_555
A
CYS
33
A
SG
CYS
33
1_555
PLANT PROTEIN
Cyclic cystine knot, cyclotide, circular protein, beta-hairpin, PLANT PROTEIN
ITR2_MOMCO
UNP
1
1
P82409
SGSDGGVCPKILKKCRRDSDCPGACICRGNGYCG
1
34
1IB9
1
34
P82409
A
1
1
34
2
anti-parallel
A
ILE
26
A
ILE
26
A
CYS
27
A
CYS
27
A
CYS
33
A
CYS
33
A
GLY
34
A
GLY
34