0.018235
0.000000
0.000000
0.000000
0.017062
0.000000
0.000000
0.000000
0.014821
0.00000
0.00000
0.00000
SEE REMARK 4.
AN OCCUPANCY OF 0.0 INDICATES THAT NO SIGNIFICANT ELECTRON DENSITY WAS FOUND IN THE FINAL FOURIER MAP.
Kossiakoff, A.A.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
4
90.00
90.00
90.00
54.840
58.610
67.470
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
C3 H9 O4 P
140.075
PHOSPHORYLISOPROPANE
non-polymer
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
US
Basic Life Sci.
BLFSBY
0658
0090-5542
27
281
304
6712567
Use of the neutron diffraction--H/D exchange technique to determine the conformational dynamics of trypsin
1984
UK
Nature
NATUAS
0006
0028-0836
296
713
Protein Dynamics Investigated by the Neutron Diffraction-Hydrogen Exchange Technique
1982
US
Biochemistry
BICHAW
0033
0006-2960
20
6462
Direct Determination of the Protonation States of Aspartic Acid-102 and Histidine-57 in the Tetrahedral Intermediate of the Serine Proteases. Neutron Structure of Trypsin
1981
UK
Nature
NATUAS
0006
0028-0836
288
414
Neutron Diffraction Identifies His 57 as the Catalytic Base in Trypsin
1980
DK
Acta Crystallogr.,Sect.B
ASBSDK
0622
0108-7681
35
1861
The Accuracy of Refined Protein Structures, Comparison of Two Independently Refined Models of Bovine Trypsin
1979
DK
Acta Crystallogr.,Sect.B
ASBSDK
0622
0108-7681
33
1824
Difference-Fourier Refinement of the Structure of Dip-Trypsin at 1.5 Angstroms Using a Minicomputer Technique
1977
Cold Spring Harbor Lab.,Cold Spring Harbor,N.Y.
Proteases and Biological Control
0988
0-87969-144-X
13
Structure-Function Relationships in the Serine Proteases
1975
US
Biochem.Biophys.Res.Commun.
BBRCA9
0146
0006-291X
59
70
Silver Ion Inhibition of Serine Proteases, Crystallographic Study of Silver-Trypsin
1974
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
83
185
The Structure of Bovine Trypsin,Electron Density Maps of the Inhibited Enzyme at 5 Angstroms and at 2.7 Angstroms Resolution
1974
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
83
209
Structure and Specific Binding of Trypsin, Comparison of Inhibited Derivatives and a Model for Substrate Binding
1974
US
Cold Spring Harbor Symp.Quant.Biol.
CSHSAZ
0421
0091-7451
36
125
The Crystal and Molecular Structure of Dip-Inhibited Bovine Trypsin at 2.7 Angstroms Resolution
1972
1
2
3
0.018235
0.000000
0.000000
0.000000
0.017062
0.000000
0.000000
0.000000
0.014821
0.00000
0.00000
0.00000
1
neutron
1
1.0
23327.242
BETA-TRYPSIN
3.4.21.4
1
man
polymer
140.075
PHOSPHORYLISOPROPANE
1
syn
non-polymer
no
no
IVGGYTCGANTVPYQVSLNSGYHFCGGSLIDSQWVVSAAHCYKSGIQVRLGEDNINVVEGNEQFISASKSIVHPSYDSNT
LNNDIMLIKLKSAASLDSRVASISLPTSCASAGTQCLISGWGNTKSSGTSYPDVLKCLKAPILSDSSCKSAYPGQITSNM
FCAGYLEGGKDSCQGDSGGPVVCSGKLQGIVSWGSGCAQKNKPGVYTKVCNYVSWIKQTIASN
IVGGYTCGANTVPYQVSLNSGYHFCGGSLIDSQWVVSAAHCYKSGIQVRLGEDNINVVEGNEQFISASKSIVHPSYDSNT
LNNDIMLIKLKSAASLDSRVASISLPTSCASAGTQCLISGWGNTKSSGTSYPDVLKCLKAPILSDSSCKSAYPGQITSNM
FCAGYLEGGKDSCQGDSGGPVVCSGKLQGIVSWGSGCAQKNKPGVYTKVCNYVSWIKQTIASN
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
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
cattle
Bos
sample
9913
Bos taurus
pdbx_database_status
struct_conf
struct_conf_type
repository
Initial release
Version format compliance
Version format compliance
Derived calculations
Other
1
0
1988-01-16
1
1
2008-03-03
1
2
2011-07-13
1
3
2017-11-29
_pdbx_database_status.process_site
Y
BNL
1987-09-16
REL
ISP
PHOSPHORYLISOPROPANE
THE ENZYME IS INHIBITED BY A MONOISOPROPYLPHOSPHORYL
DERIVATIVE. THE REFINED STRUCTURE IN THIS REGION LOOKS
VERY MUCH LIKE THAT EXPECTED FOR THE TETRAHEDRAL
INTERMEDIATE IN THE REACTION SEQUENCE. THE NE2 OF HIS 57
IS HYDROGEN-BONDED TO O1A OF THE ISP GROUP, WHICH
CORRESPONDS TO THE LEAVING GROUP NITROGEN OF A SPECIFIC
SUBSTRATE.
ISP
1
2
ISP
ISP
1
A
ILE
16
n
1
ILE
16
A
VAL
17
n
2
VAL
17
A
GLY
18
n
3
GLY
18
A
GLY
19
n
4
GLY
19
A
TYR
20
n
5
TYR
20
A
THR
21
n
6
THR
21
A
CYS
22
n
7
CYS
22
A
GLY
23
n
8
GLY
23
A
ALA
24
n
9
ALA
24
A
ASN
25
n
10
ASN
25
A
THR
26
n
11
THR
26
A
VAL
27
n
12
VAL
27
A
PRO
28
n
13
PRO
28
A
TYR
29
n
14
TYR
29
A
GLN
30
n
15
GLN
30
A
VAL
31
n
16
VAL
31
A
SER
32
n
17
SER
32
A
LEU
33
n
18
LEU
33
A
ASN
34
n
19
ASN
34
A
SER
37
n
20
SER
37
A
GLY
38
n
21
GLY
38
A
TYR
39
n
22
TYR
39
A
HIS
40
n
23
HIS
40
A
PHE
41
n
24
PHE
41
A
CYS
42
n
25
CYS
42
A
GLY
43
n
26
GLY
43
A
GLY
44
n
27
GLY
44
A
SER
45
n
28
SER
45
A
LEU
46
n
29
LEU
46
A
ILE
47
n
30
ILE
47
A
ASP
48
n
31
ASP
48
A
SER
49
n
32
SER
49
A
GLN
50
n
33
GLN
50
A
TRP
51
n
34
TRP
51
A
VAL
52
n
35
VAL
52
A
VAL
53
n
36
VAL
53
A
SER
54
n
37
SER
54
A
ALA
55
n
38
ALA
55
A
ALA
56
n
39
ALA
56
A
HIS
57
n
40
HIS
57
A
CYS
58
n
41
CYS
58
A
TYR
59
n
42
TYR
59
A
LYS
60
n
43
LYS
60
A
SER
61
n
44
SER
61
A
GLY
62
n
45
GLY
62
A
ILE
63
n
46
ILE
63
A
GLN
64
n
47
GLN
64
A
VAL
65
n
48
VAL
65
A
ARG
65
n
49
A
ARG
65
A
LEU
66
n
50
LEU
66
A
GLY
69
n
51
GLY
69
A
GLU
70
n
52
GLU
70
A
ASP
71
n
53
ASP
71
A
ASN
72
n
54
ASN
72
A
ILE
73
n
55
ILE
73
A
ASN
74
n
56
ASN
74
A
VAL
75
n
57
VAL
75
A
VAL
76
n
58
VAL
76
A
GLU
77
n
59
GLU
77
A
GLY
78
n
60
GLY
78
A
ASN
79
n
61
ASN
79
A
GLU
80
n
62
GLU
80
A
GLN
81
n
63
GLN
81
A
PHE
82
n
64
PHE
82
A
ILE
83
n
65
ILE
83
A
SER
84
n
66
SER
84
A
ALA
85
n
67
ALA
85
A
SER
86
n
68
SER
86
A
LYS
87
n
69
LYS
87
A
SER
88
n
70
SER
88
A
ILE
89
n
71
ILE
89
A
VAL
90
n
72
VAL
90
A
HIS
91
n
73
HIS
91
A
PRO
92
n
74
PRO
92
A
SER
93
n
75
SER
93
A
TYR
94
n
76
TYR
94
A
ASP
95
n
77
ASP
95
A
SER
96
n
78
SER
96
A
ASN
97
n
79
ASN
97
A
THR
98
n
80
THR
98
A
LEU
99
n
81
LEU
99
A
ASN
100
n
82
ASN
100
A
ASN
101
n
83
ASN
101
A
ASP
102
n
84
ASP
102
A
ILE
103
n
85
ILE
103
A
MET
104
n
86
MET
104
A
LEU
105
n
87
LEU
105
A
ILE
106
n
88
ILE
106
A
LYS
107
n
89
LYS
107
A
LEU
108
n
90
LEU
108
A
LYS
109
n
91
LYS
109
A
SER
110
n
92
SER
110
A
ALA
111
n
93
ALA
111
A
ALA
112
n
94
ALA
112
A
SER
113
n
95
SER
113
A
LEU
114
n
96
LEU
114
A
ASP
115
n
97
ASP
115
A
SER
116
n
98
SER
116
A
ARG
117
n
99
ARG
117
A
VAL
118
n
100
VAL
118
A
ALA
119
n
101
ALA
119
A
SER
120
n
102
SER
120
A
ILE
121
n
103
ILE
121
A
SER
122
n
104
SER
122
A
LEU
123
n
105
LEU
123
A
PRO
124
n
106
PRO
124
A
THR
125
n
107
THR
125
A
SER
127
n
108
SER
127
A
CYS
128
n
109
CYS
128
A
ALA
129
n
110
ALA
129
A
SER
130
n
111
SER
130
A
ALA
132
n
112
ALA
132
A
GLY
133
n
113
GLY
133
A
THR
134
n
114
THR
134
A
GLN
135
n
115
GLN
135
A
CYS
136
n
116
CYS
136
A
LEU
137
n
117
LEU
137
A
ILE
138
n
118
ILE
138
A
SER
139
n
119
SER
139
A
GLY
140
n
120
GLY
140
A
TRP
141
n
121
TRP
141
A
GLY
142
n
122
GLY
142
A
ASN
143
n
123
ASN
143
A
THR
144
n
124
THR
144
A
LYS
145
n
125
LYS
145
A
SER
146
n
126
SER
146
A
SER
147
n
127
SER
147
A
GLY
148
n
128
GLY
148
A
THR
149
n
129
THR
149
A
SER
150
n
130
SER
150
A
TYR
151
n
131
TYR
151
A
PRO
152
n
132
PRO
152
A
ASP
153
n
133
ASP
153
A
VAL
154
n
134
VAL
154
A
LEU
155
n
135
LEU
155
A
LYS
156
n
136
LYS
156
A
CYS
157
n
137
CYS
157
A
LEU
158
n
138
LEU
158
A
LYS
159
n
139
LYS
159
A
ALA
160
n
140
ALA
160
A
PRO
161
n
141
PRO
161
A
ILE
162
n
142
ILE
162
A
LEU
163
n
143
LEU
163
A
SER
164
n
144
SER
164
A
ASP
165
n
145
ASP
165
A
SER
166
n
146
SER
166
A
SER
167
n
147
SER
167
A
CYS
168
n
148
CYS
168
A
LYS
169
n
149
LYS
169
A
SER
170
n
150
SER
170
A
ALA
171
n
151
ALA
171
A
TYR
172
n
152
TYR
172
A
PRO
173
n
153
PRO
173
A
GLY
174
n
154
GLY
174
A
GLN
175
n
155
GLN
175
A
ILE
176
n
156
ILE
176
A
THR
177
n
157
THR
177
A
SER
178
n
158
SER
178
A
ASN
179
n
159
ASN
179
A
MET
180
n
160
MET
180
A
PHE
181
n
161
PHE
181
A
CYS
182
n
162
CYS
182
A
ALA
183
n
163
ALA
183
A
GLY
184
n
164
GLY
184
A
TYR
184
n
165
A
TYR
184
A
LEU
185
n
166
LEU
185
A
GLU
186
n
167
GLU
186
A
GLY
187
n
168
GLY
187
A
GLY
188
n
169
GLY
188
A
LYS
188
n
170
A
LYS
188
A
ASP
189
n
171
ASP
189
A
SER
190
n
172
SER
190
A
CYS
191
n
173
CYS
191
A
GLN
192
n
174
GLN
192
A
GLY
193
n
175
GLY
193
A
ASP
194
n
176
ASP
194
A
SER
195
n
177
SER
195
A
GLY
196
n
178
GLY
196
A
GLY
197
n
179
GLY
197
A
PRO
198
n
180
PRO
198
A
VAL
199
n
181
VAL
199
A
VAL
200
n
182
VAL
200
A
CYS
201
n
183
CYS
201
A
SER
202
n
184
SER
202
A
GLY
203
n
185
GLY
203
A
LYS
204
n
186
LYS
204
A
LEU
209
n
187
LEU
209
A
GLN
210
n
188
GLN
210
A
GLY
211
n
189
GLY
211
A
ILE
212
n
190
ILE
212
A
VAL
213
n
191
VAL
213
A
SER
214
n
192
SER
214
A
TRP
215
n
193
TRP
215
A
GLY
216
n
194
GLY
216
A
SER
217
n
195
SER
217
A
GLY
219
n
196
GLY
219
A
CYS
220
n
197
CYS
220
A
ALA
221
n
198
ALA
221
A
GLN
221
n
199
A
GLN
221
A
LYS
222
n
200
LYS
222
A
ASN
223
n
201
ASN
223
A
LYS
224
n
202
LYS
224
A
PRO
225
n
203
PRO
225
A
GLY
226
n
204
GLY
226
A
VAL
227
n
205
VAL
227
A
TYR
228
n
206
TYR
228
A
THR
229
n
207
THR
229
A
LYS
230
n
208
LYS
230
A
VAL
231
n
209
VAL
231
A
CYS
232
n
210
CYS
232
A
ASN
233
n
211
ASN
233
A
TYR
234
n
212
TYR
234
A
VAL
235
n
213
VAL
235
A
SER
236
n
214
SER
236
A
TRP
237
n
215
TRP
237
A
ILE
238
n
216
ILE
238
A
LYS
239
n
217
LYS
239
A
GLN
240
n
218
GLN
240
A
THR
241
n
219
THR
241
A
ILE
242
n
220
ILE
242
A
ALA
243
n
221
ALA
243
A
SER
244
n
222
SER
244
A
ASN
245
n
223
ASN
245
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
N
TYR
20
A
N
TYR
5
A
O
CYS
157
A
O
CYS
137
A
N
LEU
158
A
N
LEU
138
A
O
ILE
138
A
O
ILE
118
A
O
LEU
137
A
O
LEU
117
A
N
VAL
200
A
N
VAL
182
A
O
GLY
197
A
O
GLY
179
A
N
VAL
213
A
N
VAL
191
A
O
ILE
212
A
O
ILE
190
A
N
THR
229
A
N
THR
207
A
O
TYR
228
A
O
TYR
206
A
N
PHE
181
A
N
PHE
161
A
O
SER
45
A
O
SER
28
A
N
VAL
53
A
N
VAL
36
A
N
SER
54
A
N
SER
37
A
O
MET
104
A
O
MET
86
A
O
ILE
103
A
O
ILE
85
A
N
HIS
91
A
N
HIS
73
A
O
LEU
66
A
O
LEU
50
A
N
GLN
81
A
N
GLN
63
1
A
O2P
ISP
1
B
O2P
ISP
1
1
N
1
A
A
OG
P
SER
ISP
195
1
1.52
1
A
A
DZ1
OD1
LYS
ASN
87
245
1.56
A
1
A
A
OE1
DZ3
GLN
LYS
221
222
1.59
1
A
A
OD1
DH22
ASN
ARG
25
117
1.59
1
A
TYR
39
0.122
SIDE CHAIN
1
A
TYR
59
0.071
SIDE CHAIN
1
6.69
1.10
114.20
120.89
A
A
A
CA
CB
SG
CYS
CYS
CYS
22
22
22
N
1
-14.94
2.00
110.40
95.46
A
A
A
CB
CA
C
GLN
GLN
GLN
50
50
50
N
1
8.98
1.10
117.90
126.88
A
A
A
CD1
CG
CD2
TYR
TYR
TYR
59
59
59
N
1
-9.12
0.60
121.00
111.88
A
A
A
CB
CG
CD1
TYR
TYR
TYR
59
59
59
N
1
-6.72
0.80
121.30
114.58
A
A
A
CG
CD1
CE1
TYR
TYR
TYR
59
59
59
N
1
-6.46
0.80
121.30
114.84
A
A
A
CG
CD2
CE2
TYR
TYR
TYR
59
59
59
N
1
-10.42
1.70
123.20
112.78
A
A
A
O
C
N
SER
SER
GLY
61
61
62
Y
A
A
A
1
-3.07
0.50
120.30
117.23
A
A
A
NE
CZ
NH1
ARG
ARG
ARG
65
65
65
N
1
-13.05
1.20
123.30
110.25
A
A
A
OE1
CD
OE2
GLU
GLU
GLU
80
80
80
N
1
6.92
1.10
117.90
124.82
A
A
A
CD1
CG
CD2
TYR
TYR
TYR
94
94
94
N
1
-3.94
0.60
121.00
117.06
A
A
A
CB
CG
CD1
TYR
TYR
TYR
94
94
94
N
1
-16.67
1.90
123.30
106.63
A
A
A
OD1
CG
OD2
ASP
ASP
ASP
102
102
102
N
1
9.24
0.90
118.30
127.54
A
A
A
CB
CG
OD1
ASP
ASP
ASP
102
102
102
N
1
7.51
0.90
118.30
125.81
A
A
A
CB
CG
OD2
ASP
ASP
ASP
102
102
102
N
1
-14.98
1.10
119.40
104.42
A
A
A
NH1
CZ
NH2
ARG
ARG
ARG
117
117
117
N
1
3.97
0.50
120.30
124.27
A
A
A
NE
CZ
NH1
ARG
ARG
ARG
117
117
117
N
1
11.00
0.50
120.30
131.30
A
A
A
NE
CZ
NH2
ARG
ARG
ARG
117
117
117
N
1
9.72
1.60
122.70
132.42
A
A
A
O
C
N
THR
THR
SER
125
125
127
Y
1
-4.11
0.60
121.00
116.89
A
A
A
CB
CG
CD1
TYR
TYR
TYR
151
151
151
N
1
-14.09
2.20
117.20
103.11
A
A
A
CA
C
N
SER
SER
ASP
164
164
165
Y
1
12.27
1.60
122.70
134.97
A
A
A
O
C
N
SER
SER
ASP
164
164
165
Y
1
-11.50
1.80
110.60
99.10
A
A
A
N
CA
CB
ASP
ASP
ASP
165
165
165
N
1
15.68
2.20
113.40
129.08
A
A
A
CA
CB
CG
ASP
ASP
ASP
165
165
165
N
1
-13.41
1.90
123.30
109.89
A
A
A
OD1
CG
OD2
ASP
ASP
ASP
165
165
165
N
1
9.44
0.90
118.30
127.74
A
A
A
CB
CG
OD2
ASP
ASP
ASP
165
165
165
N
1
10.27
1.50
110.50
120.77
A
A
A
N
CA
CB
SER
SER
SER
170
170
170
N
1
-6.30
0.60
121.00
114.70
A
A
A
CB
CG
CD2
TYR
TYR
TYR
172
172
172
N
1
6.86
1.10
117.90
124.76
A
A
A
CD1
CG
CD2
TYR
TYR
TYR
172
172
172
N
1
-6.05
0.80
121.30
115.25
A
A
A
CG
CD1
CE1
TYR
TYR
TYR
172
172
172
N
1
-5.59
0.80
121.30
115.71
A
A
A
CG
CD2
CE2
TYR
TYR
TYR
172
172
172
N
1
9.94
1.60
100.20
110.14
A
A
A
CG
SD
CE
MET
MET
MET
180
180
180
N
A
A
A
1
7.81
0.90
119.80
127.61
A
A
A
CD1
CE1
CZ
TYR
TYR
TYR
184
184
184
N
1
-11.56
1.70
123.20
111.64
A
A
A
O
C
N
GLU
GLU
GLY
186
186
187
Y
1
-5.42
0.90
118.30
112.88
A
A
A
CB
CG
OD1
ASP
ASP
ASP
189
189
189
N
1
19.36
2.60
111.60
130.96
A
A
A
CB
CG
CD
GLN
GLN
GLN
192
192
192
N
1
-11.72
1.90
123.30
111.58
A
A
A
OD1
CG
OD2
ASP
ASP
ASP
194
194
194
N
1
5.54
0.90
118.30
123.84
A
A
A
CB
CG
OD1
ASP
ASP
ASP
194
194
194
N
1
6.25
0.90
118.30
124.55
A
A
A
CB
CG
OD2
ASP
ASP
ASP
194
194
194
N
1
9.82
1.60
122.70
132.52
A
A
A
O
C
N
LYS
LYS
LEU
204
204
209
Y
1
10.71
1.60
122.70
133.41
A
A
A
O
C
N
GLY
GLY
ILE
211
211
212
Y
1
-14.22
1.80
110.60
96.38
A
A
A
N
CA
CB
LYS
LYS
LYS
222
222
222
N
1
A
A
NE1
CE2
TRP
TRP
51
51
-0.078
0.013
1.371
1.293
N
1
A
A
CA
CB
SER
SER
61
61
0.094
0.015
1.525
1.619
N
1
A
A
CD
OE1
GLU
GLU
70
70
0.091
0.011
1.252
1.343
N
1
A
A
NE1
CE2
TRP
TRP
237
237
-0.093
0.013
1.371
1.278
N
1
A
A
DZ1
DG
LYS
SER
107
130
1.29
1_555
2_565
1
A
SER
54
-143.26
-158.60
1
A
ASP
71
-122.09
-83.10
1
A
SER
150
-162.37
114.91
1
A
LYS
222
-36.96
129.33
1
A
ASN
223
72.81
-7.86
0.187
1.8
1
1.8
0
3230
14
0
3216
0.013
2.3
MODIFIED BETA TRYPSIN (MONOISOPROPYLPHOSPHORYL INHIBITED) (E.C.3.4.21.4) (NEUTRON DATA)
USE OF THE NEUTRON DIFFRACTION H/D EXCHANGE TECHNIQUE TO DETERMINE THE CONFORMATIONAL DYNAMICS OF TRYPSIN
1
N
N
2
N
N
A
SER
164
A
SER
144
HELX_P
IRREGULAR AFTER CYS 168
A
TYR
172
A
TYR
152
1
SHO
9
A
LYS
230
A
LYS
208
HELX_P
LEADS INTO TERMINAL ALPHA-HLX
A
VAL
235
A
VAL
213
5
310
6
A
TYR
234
A
TYR
212
HELX_P
C-TERMINAL HELIX
A
ASN
245
A
ASN
223
1
TER
12
disulf
1.874
A
CYS
22
A
SG
CYS
7
1_555
A
CYS
157
A
SG
CYS
137
1_555
disulf
1.944
A
CYS
42
A
SG
CYS
25
1_555
A
CYS
58
A
SG
CYS
41
1_555
disulf
2.174
A
CYS
128
A
SG
CYS
109
1_555
A
CYS
232
A
SG
CYS
210
1_555
disulf
2.073
A
CYS
136
A
SG
CYS
116
1_555
A
CYS
201
A
SG
CYS
183
1_555
disulf
1.778
A
CYS
168
A
SG
CYS
148
1_555
A
CYS
182
A
SG
CYS
162
1_555
disulf
2.188
A
CYS
191
A
SG
CYS
173
1_555
A
CYS
220
A
SG
CYS
197
1_555
HYDROLASE (SERINE PROTEINASE)
HYDROLASE (SERINE PROTEINASE)
TRY1_BOVIN
UNP
1
1
P00760
FIFLALLGAAVAFPVDDDDKIVGGYTCGANTVPYQVSLNSGYHFCGGSLINSQWVVSAAHCYKSGIQVRLGEDNINVVEG
NEQFISASKSIVHPSYNSNTLNNDIMLIKLKSAASLNSRVASISLPTSCASAGTQCLISGWGNTKSSGTSYPDVLKCLKA
PILSDSSCKSAYPGQITSNMFCAGYLEGGKDSCQGDSGGPVVCSGKLQGIVSWGSGCAQKNKPGVYTKVCNYVSWIKQTI
ASN
21
243
1NTP
16
245
P00760
A
1
1
223
1
ASN
CONFLICT
ASP
48
1NTP
A
P00760
UNP
51
31
1
ASN
CONFLICT
ASP
95
1NTP
A
P00760
UNP
97
77
1
ASN
CONFLICT
ASP
115
1NTP
A
P00760
UNP
117
97
7
4
2
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
A
TYR
20
A
TYR
5
A
TYR
20
A
TYR
5
A
LYS
156
A
LYS
136
A
PRO
161
A
PRO
141
A
CYS
136
A
CYS
116
A
GLY
140
A
GLY
120
A
GLY
197
A
GLY
179
A
CYS
201
A
CYS
183
A
LYS
204
A
LYS
186
A
SER
214
A
SER
192
A
GLY
226
A
GLY
204
A
VAL
231
A
VAL
209
A
ASN
179
A
ASN
159
A
ALA
183
A
ALA
163
A
GLY
43
A
GLY
26
A
SER
45
A
SER
28
A
VAL
52
A
VAL
35
A
ALA
55
A
ALA
38
A
ILE
103
A
ILE
85
A
LYS
107
A
LYS
89
A
LYS
87
A
LYS
69
A
HIS
91
A
HIS
73
A
ILE
63
A
ILE
46
A
LEU
66
A
LEU
50
A
GLN
81
A
GLN
63
A
ALA
85
A
ALA
67
CATALYTIC SITE: THE OG ATOM OF SER-195 NUCLEOPHILICALLY ATTACKS THE SUBSTRATE CARBONYL CARBON ATOM. ASP-102 AND HIS-57 TOGETHER PROVIDE GENERAL BASE CATALYSIS. THE N-H GROUPS OF GLY-193 AND SER-195 STABILIZE REACTION INTERMEDIATES THROUGH H-BONDS TO THE SUBSTRATE CARBONYL OXYGEN ATOM.
Author
4
SPECIFIC BINDING POCKET: ASP-189 AT THE BOTTOM OF THIS POCKET FORMS AN H-BOND TO THE POSITIVELY CHARGED SIDE CHAIN OF A SPECIFIC SUBSTRATE, GIVING TRYPSIN ITS SPECIFICITY FOR THIS TYPE OF SIDE CHAIN. THE BACKBONE IN THE REGION FROM SER-214 TO CYS-220 IS INVOLVED IN HYDROGEN BONDING TO A PEPTIDE SUBSTRATE
Author
10
CONTAINS A TIGHTLY BOUND POSITIVE ION WHICH IS PROBABLY A CA2+ IN THIS STRUCTURE. THE ION IS COORDINATED IN A ROUGHLY OCTAHEDRAL FASHION BY GLU 70, ASN 72, VAL 75, GLU 80, HOH 53 AND HOH 54. THIS REGION WAS FIRST IDENTIFIED AS THE PRIMARY CA2+ BINDING SITE OF TRYPSIN BY BODE AND SCHWAGER, F.E.B.S. LETT., VOL. 56, P139 (1975)
Author
11
A
HIS
57
A
HIS
40
4
1_555
A
ASP
102
A
ASP
84
4
1_555
A
GLY
193
A
GLY
175
4
1_555
A
SER
195
A
SER
177
4
1_555
A
ASP
189
A
ASP
171
10
1_555
A
SER
190
A
SER
172
10
1_555
A
CYS
191
A
CYS
173
10
1_555
A
GLN
192
A
GLN
174
10
1_555
A
SER
214
A
SER
192
10
1_555
A
TRP
215
A
TRP
193
10
1_555
A
GLY
216
A
GLY
194
10
1_555
A
SER
217
A
SER
195
10
1_555
A
GLY
219
A
GLY
196
10
1_555
A
CYS
220
A
CYS
197
10
1_555
A
GLU
70
A
GLU
52
11
1_555
A
ASP
71
A
ASP
53
11
1_555
A
ASN
72
A
ASN
54
11
1_555
A
ILE
73
A
ILE
55
11
1_555
A
ASN
74
A
ASN
56
11
1_555
A
VAL
75
A
VAL
57
11
1_555
A
VAL
76
A
VAL
58
11
1_555
A
GLU
77
A
GLU
59
11
1_555
A
GLY
78
A
GLY
60
11
1_555
A
ASN
79
A
ASN
61
11
1_555
A
GLU
80
A
GLU
62
11
1_555
19
P 21 21 21