1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
Clore, G.M.
Grasberger, B.L.
Gronenborn, A.M.
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 H13 N O2
131.173
y
ISOLEUCINE
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
C5 H11 N O2
117.146
y
VALINE
L-peptide linking
UK
Structure
STRUE6
2005
0969-2126
2
669
678
10.1016/S0969-2126(00)00067-8
7922043
High-resolution structure of Ascaris trypsin inhibitor in solution: direct evidence for a pH-induced conformational transition in the reactive site.
1994
US
Biochemistry
BICHAW
0033
0006-2960
29
183
Sequential Resonance Assignment and Secondary Structure Determination of the Ascaris Trypsin Inhibitor, a Member of a Novel Class of Proteinase Inhibitors
1990
10.2210/pdb1ate/pdb
pdb_00001ate
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
6807.853
ASCARIS TRYPSIN INHIBITOR
1
man
polymer
no
no
EAEKCTKPNEQWTKCGGCEGTCAQKIVPCTRECKPPRCECIASAGFVRDAQGNCIKFEDCPK
EAEKCTKPNEQWTKCGGCEGTCAQKIVPCTRECKPPRCECIASAGFVRDAQGNCIKFEDCPK
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
pig roundworm
Ascaris
sample
6253
Ascaris suum
database_2
pdbx_database_status
pdbx_struct_assembly
pdbx_struct_oper_list
repository
Initial release
Version format compliance
Version format compliance
Database references
Derived calculations
Other
1
0
1994-08-31
1
1
2008-03-24
1
2
2011-07-13
1
3
2022-02-16
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_pdbx_database_status.process_site
Y
BNL
1994-05-20
REL
32
THE 3D STRUCTURE OF THE PH 2.4 FORM OF THE ASCARIS TRYPSIN
INHIBITOR IN SOLUTION BY NMR IS BASED ON 1083 EXPERIMENTAL
RESTRAINTS COMPRISING: 49 SHORT RANGE (1 < |I-J| <=5) AND
216 LONG RANGE (|I-J|>5) INTERRESIDUE INTERPROTON
DISTANCE RESTRAINTS, 323 INTRARESIDUE INTERPROTON DISTANCE
RESTRAINTS, 46 DISTANCE RESTRAINTS FOR 3 HYDROGEN BONDS,
AND 59 PHI, 49 PSI AND 41 CHI1 TORSION ANGLE RESTRAINTS. A
COMPLETE LIST OF EXPERIMENTAL RESTRAINTS HAS BEEN
DEPOSITED WITH THE BROOKHAVEN DATA BANK.
THE STRUCTURES ARE CALCULATED USING THE HYBRID METRIC
MATRIX DISTANCE GEOMETRY-DYNAMICAL SIMULATED ANNEALING
METHOD DESCRIBED BY: NILGES, M., CLORE, G.M. &
GRONENBORN, A.M. (1988) FEBS LETT 29, 317-324 ALL
STRUCTURAL STATISTICS ARE GIVEN IN REFERENCE 1.
THE RESTRAINED MINIMIZED AVERAGE STRUCTURE (SA)R IS
PRESENTED IN PROTEIN DATA BANK ENTRY 1ATB. THIS IS
OBTAINED BY FIRST AVERAGING THE COORDINATES OF THE
INDIVIDUAL 32 DYNAMICAL SIMULATED ANNEALING SA STRUCTURES
BEST FITTED TO RESIDUES 5 - 60, AND SUBJECTING THE
RESULTING COORDINATES TO RESTRAINED MINIMIZATION. THE
QUANTITY PRESENTED IN COLUMNS 61 - 66 IN ENTRY 1ATB (THE B
VALUE FIELD IN X-RAY STRUCTURES) GIVES THE AVERAGE RMS
DIFFERENCE BETWEEN THE INDIVIDUAL SA STRUCTURES AND THE
MEAN STRUCTURE. THE QUANTITIES IN THIS FIELD OF THE
INDIVIDUAL STRUCTURES IN THIS ENTRY HAVE NO MEANING.
GLU
1
n
1
GLU
1
A
ALA
2
n
2
ALA
2
A
GLU
3
n
3
GLU
3
A
LYS
4
n
4
LYS
4
A
CYS
5
n
5
CYS
5
A
THR
6
n
6
THR
6
A
LYS
7
n
7
LYS
7
A
PRO
8
n
8
PRO
8
A
ASN
9
n
9
ASN
9
A
GLU
10
n
10
GLU
10
A
GLN
11
n
11
GLN
11
A
TRP
12
n
12
TRP
12
A
THR
13
n
13
THR
13
A
LYS
14
n
14
LYS
14
A
CYS
15
n
15
CYS
15
A
GLY
16
n
16
GLY
16
A
GLY
17
n
17
GLY
17
A
CYS
18
n
18
CYS
18
A
GLU
19
n
19
GLU
19
A
GLY
20
n
20
GLY
20
A
THR
21
n
21
THR
21
A
CYS
22
n
22
CYS
22
A
ALA
23
n
23
ALA
23
A
GLN
24
n
24
GLN
24
A
LYS
25
n
25
LYS
25
A
ILE
26
n
26
ILE
26
A
VAL
27
n
27
VAL
27
A
PRO
28
n
28
PRO
28
A
CYS
29
n
29
CYS
29
A
THR
30
n
30
THR
30
A
ARG
31
n
31
ARG
31
A
GLU
32
n
32
GLU
32
A
CYS
33
n
33
CYS
33
A
LYS
34
n
34
LYS
34
A
PRO
35
n
35
PRO
35
A
PRO
36
n
36
PRO
36
A
ARG
37
n
37
ARG
37
A
CYS
38
n
38
CYS
38
A
GLU
39
n
39
GLU
39
A
CYS
40
n
40
CYS
40
A
ILE
41
n
41
ILE
41
A
ALA
42
n
42
ALA
42
A
SER
43
n
43
SER
43
A
ALA
44
n
44
ALA
44
A
GLY
45
n
45
GLY
45
A
PHE
46
n
46
PHE
46
A
VAL
47
n
47
VAL
47
A
ARG
48
n
48
ARG
48
A
ASP
49
n
49
ASP
49
A
ALA
50
n
50
ALA
50
A
GLN
51
n
51
GLN
51
A
GLY
52
n
52
GLY
52
A
ASN
53
n
53
ASN
53
A
CYS
54
n
54
CYS
54
A
ILE
55
n
55
ILE
55
A
LYS
56
n
56
LYS
56
A
PHE
57
n
57
PHE
57
A
GLU
58
n
58
GLU
58
A
ASP
59
n
59
ASP
59
A
CYS
60
n
60
CYS
60
A
PRO
61
n
61
PRO
61
A
LYS
62
n
62
LYS
62
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
THR
13
A
O
THR
13
A
N
ARG
37
A
N
ARG
37
A
N
ASP
49
A
N
ASP
49
A
O
ASN
53
A
O
ASN
53
9
A
A
HE1
HZ1
TRP
LYS
12
14
1.28
21
A
A
H1
H
GLU
ALA
1
2
1.28
24
A
A
HG1
H
THR
ALA
21
23
1.31
25
A
A
HE1
HZ1
TRP
LYS
12
14
1.32
1
A
ARG
31
0.247
SIDE CHAIN
1
A
ARG
37
0.280
SIDE CHAIN
1
A
ARG
48
0.243
SIDE CHAIN
2
A
ARG
31
0.319
SIDE CHAIN
2
A
ARG
37
0.110
SIDE CHAIN
2
A
ARG
48
0.319
SIDE CHAIN
3
A
ARG
31
0.315
SIDE CHAIN
3
A
ARG
37
0.281
SIDE CHAIN
3
A
ARG
48
0.130
SIDE CHAIN
4
A
ARG
31
0.306
SIDE CHAIN
4
A
ARG
37
0.288
SIDE CHAIN
4
A
ARG
48
0.286
SIDE CHAIN
5
A
ARG
31
0.317
SIDE CHAIN
5
A
ARG
37
0.241
SIDE CHAIN
5
A
ARG
48
0.269
SIDE CHAIN
6
A
ARG
31
0.282
SIDE CHAIN
6
A
ARG
37
0.280
SIDE CHAIN
6
A
ARG
48
0.287
SIDE CHAIN
7
A
ARG
31
0.236
SIDE CHAIN
7
A
ARG
48
0.109
SIDE CHAIN
8
A
ARG
31
0.220
SIDE CHAIN
8
A
ARG
37
0.253
SIDE CHAIN
8
A
ARG
48
0.219
SIDE CHAIN
9
A
ARG
31
0.292
SIDE CHAIN
9
A
ARG
37
0.304
SIDE CHAIN
9
A
ARG
48
0.214
SIDE CHAIN
10
A
ARG
31
0.295
SIDE CHAIN
10
A
ARG
37
0.256
SIDE CHAIN
10
A
ARG
48
0.238
SIDE CHAIN
11
A
ARG
31
0.309
SIDE CHAIN
11
A
ARG
37
0.306
SIDE CHAIN
12
A
ARG
31
0.106
SIDE CHAIN
12
A
ARG
37
0.318
SIDE CHAIN
12
A
ARG
48
0.319
SIDE CHAIN
13
A
ARG
31
0.262
SIDE CHAIN
13
A
ARG
37
0.179
SIDE CHAIN
13
A
ARG
48
0.313
SIDE CHAIN
14
A
ARG
31
0.139
SIDE CHAIN
14
A
ARG
37
0.234
SIDE CHAIN
14
A
ARG
48
0.215
SIDE CHAIN
15
A
ARG
31
0.305
SIDE CHAIN
15
A
ARG
37
0.128
SIDE CHAIN
15
A
ARG
48
0.172
SIDE CHAIN
16
A
ARG
31
0.115
SIDE CHAIN
16
A
ARG
37
0.265
SIDE CHAIN
16
A
ARG
48
0.300
SIDE CHAIN
17
A
ARG
31
0.158
SIDE CHAIN
17
A
ARG
37
0.285
SIDE CHAIN
17
A
ARG
48
0.197
SIDE CHAIN
18
A
ARG
31
0.316
SIDE CHAIN
18
A
ARG
37
0.115
SIDE CHAIN
18
A
ARG
48
0.170
SIDE CHAIN
19
A
ARG
31
0.269
SIDE CHAIN
19
A
ARG
37
0.313
SIDE CHAIN
19
A
ARG
48
0.238
SIDE CHAIN
20
A
ARG
31
0.242
SIDE CHAIN
20
A
ARG
37
0.319
SIDE CHAIN
20
A
ARG
48
0.192
SIDE CHAIN
21
A
ARG
31
0.314
SIDE CHAIN
21
A
ARG
48
0.248
SIDE CHAIN
22
A
ARG
31
0.306
SIDE CHAIN
22
A
ARG
37
0.279
SIDE CHAIN
22
A
ARG
48
0.203
SIDE CHAIN
23
A
ARG
31
0.245
SIDE CHAIN
23
A
ARG
48
0.236
SIDE CHAIN
24
A
ARG
31
0.166
SIDE CHAIN
24
A
ARG
37
0.304
SIDE CHAIN
24
A
ARG
48
0.239
SIDE CHAIN
25
A
ARG
31
0.240
SIDE CHAIN
25
A
ARG
37
0.196
SIDE CHAIN
25
A
ARG
48
0.319
SIDE CHAIN
26
A
ARG
31
0.100
SIDE CHAIN
26
A
ARG
37
0.228
SIDE CHAIN
26
A
ARG
48
0.216
SIDE CHAIN
27
A
ARG
31
0.187
SIDE CHAIN
27
A
ARG
37
0.282
SIDE CHAIN
27
A
ARG
48
0.279
SIDE CHAIN
28
A
ARG
31
0.188
SIDE CHAIN
28
A
ARG
37
0.317
SIDE CHAIN
28
A
ARG
48
0.246
SIDE CHAIN
29
A
ARG
31
0.228
SIDE CHAIN
29
A
ARG
37
0.267
SIDE CHAIN
29
A
ARG
48
0.275
SIDE CHAIN
30
A
ARG
31
0.318
SIDE CHAIN
30
A
ARG
37
0.305
SIDE CHAIN
30
A
ARG
48
0.214
SIDE CHAIN
31
A
ARG
31
0.289
SIDE CHAIN
31
A
ARG
37
0.206
SIDE CHAIN
31
A
ARG
48
0.268
SIDE CHAIN
32
A
ARG
31
0.227
SIDE CHAIN
32
A
ARG
37
0.317
SIDE CHAIN
32
A
ARG
48
0.317
SIDE CHAIN
1
-6.62
1.00
110.10
103.48
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
1
9.21
1.10
130.40
139.61
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
1
-6.89
1.00
107.30
100.41
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
2
-6.71
1.00
110.10
103.39
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
2
9.85
1.10
130.40
140.25
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
2
-7.26
1.00
107.30
100.04
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
2
-5.61
0.90
133.90
128.29
A
A
A
CG
CD2
CE3
TRP
TRP
TRP
12
12
12
N
3
-6.61
1.00
110.10
103.49
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
3
9.41
1.10
130.40
139.81
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
3
-7.18
1.00
107.30
100.12
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
4
-6.73
1.00
110.10
103.37
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
4
9.63
1.10
130.40
140.03
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
4
-7.23
1.00
107.30
100.07
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
5
-6.65
1.00
110.10
103.45
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
5
9.37
1.10
130.40
139.77
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
5
-7.08
1.00
107.30
100.22
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
6
-6.63
1.00
110.10
103.47
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
6
9.12
1.10
130.40
139.52
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
6
-7.03
1.00
107.30
100.27
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
7
-6.63
1.00
110.10
103.47
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
7
9.28
1.10
130.40
139.68
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
7
-7.01
1.00
107.30
100.29
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
8
-6.66
1.00
110.10
103.44
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
8
9.61
1.10
130.40
140.01
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
8
-7.20
1.00
107.30
100.10
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
9
-6.78
1.00
110.10
103.32
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
9
9.27
1.10
130.40
139.67
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
9
-7.09
1.00
107.30
100.21
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
10
-6.65
1.00
110.10
103.45
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
10
9.32
1.10
130.40
139.72
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
10
-7.04
1.00
107.30
100.26
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
11
-6.67
1.00
110.10
103.43
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
11
8.98
1.10
130.40
139.38
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
11
-6.87
1.00
107.30
100.43
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
12
-6.67
1.00
110.10
103.43
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
12
9.32
1.10
130.40
139.72
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
12
-7.06
1.00
107.30
100.24
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
13
-6.63
1.00
110.10
103.47
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
13
9.39
1.10
130.40
139.79
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
13
-7.17
1.00
107.30
100.13
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
14
-6.68
1.00
110.10
103.42
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
14
9.20
1.10
130.40
139.60
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
14
-6.99
1.00
107.30
100.31
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
15
-6.61
1.00
110.10
103.49
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
15
8.94
1.10
130.40
139.34
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
15
-6.88
1.00
107.30
100.42
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
16
-6.71
1.00
110.10
103.39
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
16
9.36
1.10
130.40
139.76
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
16
-7.06
1.00
107.30
100.24
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
17
-6.62
1.00
110.10
103.48
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
17
9.00
1.10
130.40
139.40
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
17
-6.91
1.00
107.30
100.39
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
18
-6.65
1.00
110.10
103.45
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
18
9.27
1.10
130.40
139.67
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
18
-7.00
1.00
107.30
100.30
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
19
-6.59
1.00
110.10
103.51
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
19
9.16
1.10
130.40
139.56
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
19
-6.94
1.00
107.30
100.36
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
20
-6.61
1.00
110.10
103.49
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
20
9.09
1.10
130.40
139.49
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
20
-6.99
1.00
107.30
100.31
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
21
-6.58
1.00
110.10
103.52
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
21
9.39
1.10
130.40
139.79
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
21
-7.09
1.00
107.30
100.21
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
22
-6.68
1.00
110.10
103.42
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
22
9.21
1.10
130.40
139.61
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
22
-7.01
1.00
107.30
100.29
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
23
-6.58
1.00
110.10
103.52
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
23
9.45
1.10
130.40
139.85
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
23
-7.09
1.00
107.30
100.21
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
24
-6.71
1.00
110.10
103.39
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
24
9.25
1.10
130.40
139.65
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
24
-7.02
1.00
107.30
100.28
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
25
-6.78
1.00
110.10
103.32
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
25
9.36
1.10
130.40
139.76
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
25
-7.05
1.00
107.30
100.25
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
26
-6.63
1.00
110.10
103.47
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
26
9.14
1.10
130.40
139.54
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
26
-6.99
1.00
107.30
100.31
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
27
-6.58
1.00
110.10
103.52
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
27
9.14
1.10
130.40
139.54
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
27
-7.02
1.00
107.30
100.28
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
28
-6.66
1.00
110.10
103.44
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
28
9.19
1.10
130.40
139.59
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
28
-6.93
1.00
107.30
100.37
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
29
-6.56
1.00
110.10
103.54
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
29
9.28
1.10
130.40
139.68
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
29
-7.03
1.00
107.30
100.27
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
30
-6.61
1.00
110.10
103.49
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
30
8.98
1.10
130.40
139.38
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
30
-6.83
1.00
107.30
100.47
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
31
-6.82
1.00
110.10
103.28
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
31
9.52
1.10
130.40
139.92
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
31
-7.15
1.00
107.30
100.15
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
32
-6.65
1.00
110.10
103.45
A
A
A
CG
CD1
NE1
TRP
TRP
TRP
12
12
12
N
32
9.00
1.10
130.40
139.40
A
A
A
NE1
CE2
CZ2
TRP
TRP
TRP
12
12
12
N
32
-6.89
1.00
107.30
100.41
A
A
A
NE1
CE2
CD2
TRP
TRP
TRP
12
12
12
N
1
A
A
CG
CD2
TRP
TRP
12
12
-0.120
0.017
1.432
1.312
N
2
A
A
CG
CD2
TRP
TRP
12
12
-0.123
0.017
1.432
1.309
N
3
A
A
CG
CD2
TRP
TRP
12
12
-0.123
0.017
1.432
1.309
N
4
A
A
CG
CD2
TRP
TRP
12
12
-0.124
0.017
1.432
1.308
N
5
A
A
CG
CD2
TRP
TRP
12
12
-0.123
0.017
1.432
1.309
N
6
A
A
CG
CD2
TRP
TRP
12
12
-0.120
0.017
1.432
1.312
N
7
A
A
CG
CD2
TRP
TRP
12
12
-0.121
0.017
1.432
1.311
N
8
A
A
CG
CD2
TRP
TRP
12
12
-0.123
0.017
1.432
1.309
N
9
A
A
CG
CD2
TRP
TRP
12
12
-0.122
0.017
1.432
1.310
N
10
A
A
CG
CD2
TRP
TRP
12
12
-0.121
0.017
1.432
1.311
N
11
A
A
CG
CD2
TRP
TRP
12
12
-0.120
0.017
1.432
1.312
N
12
A
A
CG
CD2
TRP
TRP
12
12
-0.122
0.017
1.432
1.310
N
13
A
A
CG
CD2
TRP
TRP
12
12
-0.122
0.017
1.432
1.310
N
14
A
A
CG
CD2
TRP
TRP
12
12
-0.120
0.017
1.432
1.312
N
15
A
A
CG
CD2
TRP
TRP
12
12
-0.120
0.017
1.432
1.312
N
16
A
A
CG
CD2
TRP
TRP
12
12
-0.121
0.017
1.432
1.311
N
17
A
A
CG
CD2
TRP
TRP
12
12
-0.118
0.017
1.432
1.314
N
18
A
A
CG
CD2
TRP
TRP
12
12
-0.121
0.017
1.432
1.311
N
19
A
A
CG
CD2
TRP
TRP
12
12
-0.121
0.017
1.432
1.311
N
20
A
A
CG
CD2
TRP
TRP
12
12
-0.120
0.017
1.432
1.312
N
21
A
A
CG
CD2
TRP
TRP
12
12
-0.123
0.017
1.432
1.309
N
22
A
A
CG
CD2
TRP
TRP
12
12
-0.121
0.017
1.432
1.311
N
23
A
A
CG
CD2
TRP
TRP
12
12
-0.121
0.017
1.432
1.311
N
24
A
A
CG
CD2
TRP
TRP
12
12
-0.122
0.017
1.432
1.310
N
25
A
A
CG
CD2
TRP
TRP
12
12
-0.122
0.017
1.432
1.310
N
26
A
A
CG
CD2
TRP
TRP
12
12
-0.122
0.017
1.432
1.310
N
27
A
A
CG
CD2
TRP
TRP
12
12
-0.120
0.017
1.432
1.312
N
28
A
A
CG
CD2
TRP
TRP
12
12
-0.122
0.017
1.432
1.310
N
29
A
A
CG
CD2
TRP
TRP
12
12
-0.120
0.017
1.432
1.312
N
30
A
A
CG
CD2
TRP
TRP
12
12
-0.120
0.017
1.432
1.312
N
31
A
A
CG
CD2
TRP
TRP
12
12
-0.124
0.017
1.432
1.308
N
32
A
A
CG
CD2
TRP
TRP
12
12
-0.121
0.017
1.432
1.311
N
1
A
ALA
2
-149.54
48.89
1
A
THR
6
-108.17
-66.04
1
A
LYS
7
-45.87
153.09
1
A
ASN
9
55.98
-78.18
1
A
GLU
10
-42.06
95.99
1
A
GLU
19
-165.30
-144.71
1
A
THR
30
-56.54
-157.34
1
A
ARG
31
-74.46
41.46
1
A
LYS
56
-44.07
162.12
1
A
PRO
61
-55.01
-172.27
2
A
ALA
2
-90.63
50.43
2
A
THR
6
-73.35
-99.08
2
A
ASN
9
60.71
-17.09
2
A
GLU
19
-165.30
-144.52
2
A
ALA
23
-140.98
-10.27
2
A
THR
30
-56.75
-160.14
2
A
ARG
31
-74.95
41.28
2
A
ARG
37
179.94
159.82
2
A
GLU
39
-175.29
-168.15
2
A
SER
43
-55.61
-8.16
3
A
THR
6
-101.50
-79.78
3
A
ASN
9
54.69
-80.64
3
A
GLU
10
-42.60
100.20
3
A
GLU
19
-160.15
-144.74
3
A
THR
30
-137.65
-150.26
3
A
ARG
31
-74.07
39.05
3
A
GLU
32
-117.70
62.31
4
A
ASN
9
56.84
-4.43
4
A
GLU
19
-165.04
-155.94
4
A
ALA
23
-143.13
-8.31
4
A
THR
30
-75.35
-152.99
4
A
ARG
31
-74.58
39.11
4
A
LYS
34
-45.16
152.74
4
A
GLU
39
-172.07
-167.54
4
A
SER
43
-58.71
-5.33
4
A
PRO
61
-55.74
-176.25
5
A
GLU
3
-46.31
92.65
5
A
THR
6
-93.30
-72.12
5
A
PRO
8
-60.42
-176.05
5
A
ASN
9
57.92
-77.27
5
A
GLU
10
-49.84
103.24
5
A
GLU
19
-150.85
-144.02
5
A
THR
30
-130.85
-151.71
5
A
ARG
31
-74.31
39.06
5
A
LYS
34
-45.59
157.50
5
A
SER
43
-60.17
0.08
5
A
GLN
51
-78.75
22.94
5
A
LYS
56
-47.93
159.50
5
A
PRO
61
-56.16
179.29
6
A
ALA
2
-170.61
84.70
6
A
THR
6
-108.26
-84.29
6
A
PRO
8
-60.35
-174.80
6
A
ASN
9
56.31
-79.04
6
A
GLU
10
-44.03
103.74
6
A
GLU
19
-165.09
-144.43
6
A
THR
30
-58.56
-152.21
6
A
ARG
31
-73.77
37.93
6
A
GLU
39
-175.39
-168.25
6
A
SER
43
-54.66
-8.25
7
A
ALA
2
-167.28
96.82
7
A
ASN
9
57.52
-4.34
7
A
GLU
19
-161.79
-150.71
7
A
THR
30
-57.38
-158.64
7
A
ARG
31
-75.98
43.81
7
A
GLU
32
-117.03
58.96
7
A
GLU
39
-174.07
-168.51
7
A
PRO
61
-55.43
-173.32
8
A
GLU
3
-53.24
95.37
8
A
THR
6
-74.08
-97.07
8
A
PRO
8
-56.66
-174.63
8
A
ASN
9
57.38
-79.84
8
A
GLU
10
-51.72
96.98
8
A
GLU
19
-165.35
-144.11
8
A
THR
30
-138.15
-153.19
8
A
ARG
31
-75.01
40.11
8
A
LYS
34
-47.95
153.57
8
A
GLU
39
-162.26
-168.66
8
A
LYS
56
-49.31
156.31
9
A
ALA
2
-90.97
57.24
9
A
GLU
3
-46.37
-79.67
9
A
ASN
9
56.08
-77.82
9
A
GLU
10
-43.19
105.84
9
A
GLU
19
-165.33
-144.42
9
A
CYS
29
-162.44
117.47
9
A
THR
30
-55.73
-163.08
9
A
ARG
31
-75.51
40.64
9
A
GLU
32
-107.93
71.54
9
A
SER
43
-57.01
-7.86
10
A
THR
6
-110.26
-73.14
10
A
LYS
7
-41.47
152.58
10
A
ASN
9
54.36
-81.49
10
A
GLU
10
-44.22
99.39
10
A
GLU
19
-165.28
-151.17
10
A
ALA
23
-141.68
-11.76
10
A
THR
30
-80.23
-150.34
10
A
ARG
31
-74.60
38.32
10
A
LYS
34
-44.41
156.55
10
A
GLU
39
-171.58
-159.01
10
A
SER
43
-54.57
-9.86
11
A
ALA
2
-170.19
108.30
11
A
GLU
3
-56.55
99.81
11
A
ASN
9
59.91
-75.98
11
A
GLU
10
-43.60
105.19
11
A
GLU
19
-165.15
-145.52
11
A
GLN
24
-150.34
86.15
11
A
THR
30
-56.74
-155.81
11
A
ARG
31
-73.64
39.08
11
A
GLU
32
-92.46
49.98
11
A
GLU
39
-171.61
-177.57
11
A
LYS
56
-43.83
158.86
11
A
PRO
61
-56.48
178.23
12
A
ALA
2
-166.36
50.50
12
A
THR
6
-110.06
-89.28
12
A
LYS
7
-45.99
152.83
12
A
PRO
8
-62.61
-174.90
12
A
ASN
9
55.06
-82.45
12
A
GLU
10
-45.86
102.98
12
A
GLU
19
-165.19
-151.00
12
A
THR
30
-57.77
-158.41
12
A
ARG
31
-76.27
44.44
12
A
LYS
56
-42.89
163.04
13
A
THR
6
-92.36
-80.09
13
A
PRO
8
-62.32
-175.23
13
A
ASN
9
55.96
-80.34
13
A
GLU
10
-49.87
98.30
13
A
GLU
19
-162.38
-151.38
13
A
GLN
24
-150.68
89.17
13
A
THR
30
-120.45
-150.48
13
A
ARG
31
-74.30
38.08
13
A
CYS
33
-175.11
96.79
13
A
LYS
34
-45.59
157.30
13
A
GLU
39
-172.16
-173.22
13
A
SER
43
-52.65
-8.66
13
A
PRO
61
-55.35
178.40
14
A
CYS
5
-127.93
-166.01
14
A
THR
6
-95.45
-85.59
14
A
PRO
8
-59.23
-174.91
14
A
ASN
9
58.79
-78.27
14
A
GLU
10
-52.44
100.15
14
A
GLU
19
-146.22
-156.45
14
A
ALA
23
-140.05
-8.10
14
A
THR
30
-54.54
-162.64
14
A
ARG
31
-73.78
38.36
14
A
GLU
39
-170.93
-170.65
14
A
SER
43
-57.26
-3.93
14
A
PRO
61
-55.82
-169.27
15
A
CYS
5
-103.05
-160.91
15
A
THR
6
-85.80
-85.60
15
A
PRO
8
-58.10
-174.23
15
A
ASN
9
59.69
-76.76
15
A
GLU
10
-44.82
102.54
15
A
GLU
19
-165.34
-148.04
15
A
GLN
24
-151.26
87.70
15
A
THR
30
-58.82
-153.41
15
A
ARG
31
-74.27
39.01
15
A
GLU
32
-99.71
45.44
15
A
LYS
34
-44.97
158.25
15
A
GLU
39
-173.87
-164.47
15
A
GLN
51
-79.42
23.75
16
A
ALA
2
-171.34
138.08
16
A
ASN
9
62.00
-21.55
16
A
GLU
19
-165.05
-144.00
16
A
THR
30
-61.73
-149.15
16
A
ARG
31
-74.13
38.19
16
A
CYS
33
-175.38
104.65
16
A
LYS
34
-49.01
157.72
16
A
GLU
39
-172.25
-169.63
17
A
THR
6
-100.09
-72.97
17
A
PRO
8
-62.57
-179.70
17
A
ASN
9
56.44
-79.21
17
A
GLU
10
-57.61
97.88
17
A
GLU
19
-165.30
-144.41
17
A
THR
30
-57.68
-153.95
17
A
ARG
31
-73.53
38.86
17
A
LYS
56
-49.20
154.98
18
A
ALA
2
-153.52
86.70
18
A
THR
6
-104.11
-86.98
18
A
ASN
9
66.39
-26.87
18
A
GLU
19
-165.33
-142.62
18
A
ALA
23
-140.57
-5.66
18
A
THR
30
-133.29
-148.64
18
A
ARG
31
-73.98
37.60
18
A
CYS
33
-161.95
112.16
18
A
LYS
34
-46.11
157.89
18
A
GLU
39
-170.07
-166.55
18
A
SER
43
-58.93
-9.53
18
A
LYS
56
-49.22
155.15
18
A
CYS
60
-48.50
159.38
18
A
PRO
61
-56.43
-168.58
19
A
GLU
3
-62.10
93.10
19
A
THR
6
-99.15
-90.52
19
A
PRO
8
-60.84
-174.03
19
A
ASN
9
55.99
-81.01
19
A
GLU
10
-44.97
105.58
19
A
GLU
19
-158.29
-144.87
19
A
THR
30
-60.48
-144.13
19
A
ARG
31
-71.61
35.46
19
A
LYS
34
-47.03
157.16
19
A
GLU
39
-175.42
-168.40
19
A
LYS
56
-48.24
161.92
20
A
ALA
2
-45.41
156.33
20
A
GLU
3
-66.50
90.20
20
A
THR
6
-78.69
-79.94
20
A
PRO
8
-60.41
-174.08
20
A
ASN
9
53.09
-87.67
20
A
GLU
10
-46.63
101.89
20
A
GLU
19
-165.15
-146.16
20
A
THR
30
-62.11
-153.19
20
A
ARG
31
-74.77
39.74
20
A
LYS
56
-48.71
159.91
21
A
ASN
9
57.23
-78.20
21
A
GLU
10
-43.61
102.85
21
A
GLU
19
-165.14
-144.66
21
A
THR
30
-58.95
-151.35
21
A
ARG
31
-74.00
38.25
21
A
GLU
32
-98.10
46.61
21
A
LYS
34
-45.51
151.48
21
A
ARG
37
179.98
161.92
21
A
GLU
39
-175.56
-176.06
21
A
SER
43
-57.39
-7.38
21
A
GLN
51
-79.23
22.85
21
A
PRO
61
-54.92
175.96
22
A
ALA
2
-168.20
105.33
22
A
ASN
9
56.14
-79.55
22
A
GLU
10
-43.69
107.23
22
A
THR
30
-92.51
-156.41
22
A
ARG
31
-75.96
43.34
22
A
LYS
56
-45.72
158.84
23
A
ALA
2
-173.76
70.62
23
A
THR
6
-98.85
-80.38
23
A
ASN
9
66.08
-25.31
23
A
GLU
19
-165.45
-147.88
23
A
THR
30
-86.37
-153.16
23
A
ARG
31
-74.90
39.11
23
A
LYS
34
-47.49
157.57
23
A
GLU
39
-170.52
-171.09
24
A
GLU
3
-63.15
92.63
24
A
THR
6
-101.95
-66.81
24
A
ASN
9
54.83
-81.62
24
A
GLU
10
-44.46
104.61
24
A
GLU
19
-165.15
-153.46
24
A
THR
30
-134.81
-146.31
24
A
ARG
31
-72.53
35.86
24
A
GLU
32
-107.84
47.01
24
A
SER
43
-53.30
-8.27
24
A
GLN
51
-79.82
22.38
25
A
ASN
9
61.37
-12.61
25
A
GLU
19
-153.85
-144.74
25
A
THR
30
-137.18
-159.90
25
A
ARG
31
-76.80
46.79
25
A
GLU
39
-170.15
-167.69
26
A
THR
6
-88.92
-95.99
26
A
PRO
8
-62.14
-174.64
26
A
ASN
9
60.00
-77.46
26
A
GLU
10
-58.68
84.68
26
A
GLU
19
-164.43
-144.71
26
A
CYS
22
-69.80
6.29
26
A
THR
30
-95.91
-155.70
26
A
ARG
31
-75.62
42.62
26
A
GLU
32
-114.40
53.53
26
A
GLU
39
-160.66
-168.78
26
A
ASN
53
-110.32
-163.13
26
A
LYS
56
-46.46
163.50
26
A
PRO
61
-55.76
-170.47
27
A
THR
6
-77.99
-71.41
27
A
PRO
8
-59.46
-177.65
27
A
ASN
9
57.48
-78.17
27
A
GLU
10
-45.18
97.45
27
A
GLU
19
-165.29
-144.71
27
A
GLN
24
-150.31
81.38
27
A
THR
30
-135.17
-152.52
27
A
ARG
31
-74.29
39.22
27
A
GLU
32
-103.49
67.00
27
A
GLU
39
-167.90
-168.24
27
A
SER
43
-56.21
-7.84
27
A
ASN
53
-107.32
-166.21
28
A
ALA
2
-97.24
50.98
28
A
THR
6
-110.39
-81.76
28
A
PRO
8
-62.18
-173.83
28
A
ASN
9
56.60
-81.66
28
A
GLU
10
-56.66
96.26
28
A
GLU
19
-165.33
-144.90
28
A
ALA
23
-140.30
-14.86
28
A
THR
30
-58.94
-150.29
28
A
ARG
31
-73.51
38.05
28
A
LYS
34
-44.51
157.13
28
A
GLU
39
-175.24
-168.19
28
A
LYS
56
-48.18
155.39
28
A
PRO
61
-56.98
-174.36
29
A
LYS
4
-47.49
158.60
29
A
THR
6
-68.72
-87.99
29
A
PRO
8
-55.32
-174.53
29
A
ASN
9
61.21
-76.02
29
A
GLU
10
-47.29
102.88
29
A
THR
30
-133.60
-145.87
29
A
ARG
31
-73.40
36.25
29
A
CYS
33
-172.52
104.22
29
A
LYS
34
-46.69
157.76
29
A
SER
43
-56.83
-4.38
29
A
LYS
56
-49.20
164.00
30
A
THR
6
-110.35
-86.10
30
A
LYS
7
-43.14
151.21
30
A
PRO
8
-60.78
-174.67
30
A
ASN
9
52.47
-86.03
30
A
GLU
10
-45.81
106.01
30
A
GLU
19
-165.32
-146.89
30
A
ALA
23
-142.42
-7.47
30
A
CYS
29
-165.32
113.48
30
A
THR
30
-57.97
-157.65
30
A
ARG
31
-75.50
42.08
30
A
GLU
32
-107.85
46.17
30
A
LYS
34
-46.05
153.11
30
A
GLU
39
-172.82
-163.69
30
A
ASN
53
-110.01
-163.26
30
A
LYS
56
-43.50
160.88
30
A
PRO
61
-57.16
-166.62
31
A
THR
6
-103.86
-74.41
31
A
ASN
9
61.22
-16.18
31
A
GLU
19
-165.23
-144.39
31
A
GLN
24
-151.24
86.52
31
A
THR
30
-58.12
-153.41
31
A
ARG
31
-73.63
38.36
31
A
GLU
32
-99.05
48.53
31
A
LYS
34
-46.85
151.94
31
A
GLU
39
-175.31
-172.05
31
A
SER
43
-59.67
-5.87
31
A
LYS
56
-47.90
166.94
32
A
ALA
2
-98.34
50.54
32
A
THR
6
-110.32
-73.54
32
A
ASN
9
55.69
-80.07
32
A
GLU
10
-44.24
109.88
32
A
GLU
19
-164.64
-144.92
32
A
THR
30
-136.13
-150.12
32
A
ARG
31
-74.74
39.30
32
A
LYS
34
-47.03
157.30
32
A
GLU
39
-175.06
-168.12
32
A
PRO
61
-56.76
174.73
HIGH-RESOLUTION STRUCTURE OF ASCARIS TRYPSIN INHIBITOR IN SOLUTION: DIRECT EVIDENCE FOR A PH INDUCED CONFORMATIONAL TRANSITION IN THE REACTIVE SITE
1
Y
N
disulf
2.019
A
CYS
5
A
SG
CYS
5
1_555
A
CYS
38
A
SG
CYS
38
1_555
disulf
2.021
A
CYS
15
A
SG
CYS
15
1_555
A
CYS
33
A
SG
CYS
33
1_555
disulf
2.017
A
CYS
18
A
SG
CYS
18
1_555
A
CYS
29
A
SG
CYS
29
1_555
disulf
2.017
A
CYS
22
A
SG
CYS
22
1_555
A
CYS
60
A
SG
CYS
60
1_555
disulf
2.021
A
CYS
40
A
SG
CYS
40
1_555
A
CYS
54
A
SG
CYS
54
1_555
PROTEINASE INHIBITOR(TRYPSIN)
PROTEINASE INHIBITOR(TRYPSIN)
ITR1_ASCSU
UNP
1
1
P19398
EAEKCTKPNEQWTKCGGCEGTCAQKIVPCTRECKPPRCECIASAGFVRDAQGNCIKFEDCPK
1
62
1ATE
1
62
P19398
A
1
1
62
2
2
anti-parallel
anti-parallel
A
GLN
11
A
GLN
11
A
THR
13
A
THR
13
A
ARG
37
A
ARG
37
A
GLU
39
A
GLU
39
A
PHE
46
A
PHE
46
A
ASP
49
A
ASP
49
A
ASN
53
A
ASN
53
A
LYS
56
A
LYS
56
1
P 1