0.015962
0.009215
0.000000
0.000000
0.018431
0.000000
0.000000
0.000000
0.008044
0.00000
0.00000
0.00000
Huang, Q.
Liu, S.
Tang, Y.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
6
90.00
90.00
120.00
62.650
62.650
124.310
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
Ca 2
40.078
CALCIUM ION
non-polymer
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
H2 O
18.015
WATER
non-polymer
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
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
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
229
1022
1036
10.1006/jmbi.1993.1102
8445634
Refined 1.6 A resolution crystal structure of the complex formed between porcine beta-trypsin and MCTI-A, a trypsin inhibitor of the squash family. Detailed comparison with bovine beta-trypsin and its complex.
1993
NE
FEBS Lett.
FEBLAL
0165
0014-5793
297
143
Amino Acid Sequencing of a Trypsin Inhibitor by Refined 1.6 Angstroms X-Ray Crystal Structure of its Complex with Porcine Beta-Trypsin
1992
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
x-ray
1
1.0
23491.525
BETA-TRYPSIN
3.4.21.4
1
man
polymer
3163.831
TRYPSIN INHIBITOR A
1
man
polymer
40.078
CALCIUM ION
1
syn
non-polymer
18.015
water
135
nat
water
no
no
IVGGYTCAANSIPYQVSLNSGSHFCGGSLINSQWVVSAAHCYKSRIQVRLGEHNIDVLEGNEQFINAAKIITHPNFNGNT
LDNDIMLIKLSSPATLNSRVATVSLPRSCAAAGTECLISGWGNTKSSGSSYPSLLQCLKAPVLSNSSCKSSYPGQITGNM
ICVGFLQGGKDSCQGDSGGPVVCNGQLQGIVSWGYGCAQKNKPGVYTKVCNYVNWIQQTIAAN
IVGGYTCAANSIPYQVSLNSGSHFCGGSLINSQWVVSAAHCYKSRIQVRLGEHNIDVLEGNEQFINAAKIITHPNFNGNT
LDNDIMLIKLSSPATLNSRVATVSLPRSCAAAGTECLISGWGNTKSSGSSYPSLLQCLKAPVLSNSSCKSSYPGQITGNM
ICVGFLQGGKDSCQGDSGGPVVCNGQLQGIVSWGYGCAQKNKPGVYTKVCNYVNWIQQTIAAN
A
polypeptide(L)
no
no
RICPRIWMECTRDSDCMAKCICVAGHCG
RICPRIWMECTRDSDCMAKCICVAGHCG
I
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
n
n
n
n
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
Sus
sample
9823
SEED
Sus scrofa
balsam pear
Momordica
sample
3673
SEED
Momordica charantia
2.64
53.43
repository
Initial release
Version format compliance
Version format compliance
1
0
1994-01-31
1
1
2008-03-24
1
2
2011-07-13
Y
BNL
1992-10-24
REL
REL
CA
CALCIUM ION
HOH
water
SEQUENCE ADVISORY NOTICE:
DIFFERENCE BETWEEN SWISS-PROT AND PDB SEQUENCE.
SWISS-PROT ENTRY NAME: TRYP_PIG
SWISS-PROT RESIDUE PDB SEQRES
NAME NUMBER NAME CHAIN SEQ/INSERT CODE
ASP 145 ASN A 145
GLU 167 GLN A 167
SWISS-PROT ENTRY NAME: ITR2_MOMCH
SWISS-PROT RESIDUE PDB SEQRES
NAME NUMBER NAME CHAIN SEQ/INSERT CODE
LYS 11 THR I 11
GLN 19 LYS I 19
ASP 24 ALA I 24
THE SEQUENCE USED IN THIS ENTRY WAS DETERMINED BY X-RAY
CRYSTALLOGRAPHY. THERE ARE SEVERAL UNCERTAIN ASSIGNMENTS
WHICH DIFFER FROM THE CHEMICALLY DETERMINED SEQUENCES.
CA
55
3
CA
CA
246
A
HOH
1
4
HOH
HOH
247
A
HOH
1
4
HOH
HOH
248
A
HOH
2
4
HOH
HOH
249
A
HOH
3
4
HOH
HOH
250
A
HOH
4
4
HOH
HOH
251
A
HOH
5
4
HOH
HOH
252
A
HOH
5
4
HOH
HOH
253
A
HOH
6
4
HOH
HOH
254
A
HOH
7
4
HOH
HOH
255
A
HOH
7
4
HOH
HOH
256
A
HOH
8
4
HOH
HOH
257
A
HOH
8
4
HOH
HOH
258
A
HOH
9
4
HOH
HOH
259
A
HOH
10
4
HOH
HOH
260
A
HOH
11
4
HOH
HOH
261
A
HOH
11
4
HOH
HOH
262
A
HOH
12
4
HOH
HOH
263
A
HOH
12
4
HOH
HOH
264
A
HOH
13
4
HOH
HOH
265
A
HOH
14
4
HOH
HOH
266
A
HOH
14
4
HOH
HOH
267
A
HOH
15
4
HOH
HOH
268
A
HOH
16
4
HOH
HOH
269
A
HOH
17
4
HOH
HOH
270
A
HOH
18
4
HOH
HOH
271
A
HOH
19
4
HOH
HOH
272
A
HOH
21
4
HOH
HOH
273
A
HOH
22
4
HOH
HOH
274
A
HOH
23
4
HOH
HOH
275
A
HOH
25
4
HOH
HOH
276
A
HOH
26
4
HOH
HOH
277
A
HOH
27
4
HOH
HOH
278
A
HOH
28
4
HOH
HOH
279
A
HOH
29
4
HOH
HOH
280
A
HOH
30
4
HOH
HOH
281
A
HOH
31
4
HOH
HOH
282
A
HOH
32
4
HOH
HOH
283
A
HOH
33
4
HOH
HOH
284
A
HOH
34
4
HOH
HOH
285
A
HOH
35
4
HOH
HOH
286
A
HOH
36
4
HOH
HOH
287
A
HOH
37
4
HOH
HOH
288
A
HOH
38
4
HOH
HOH
289
A
HOH
40
4
HOH
HOH
290
A
HOH
41
4
HOH
HOH
291
A
HOH
43
4
HOH
HOH
292
A
HOH
44
4
HOH
HOH
293
A
HOH
45
4
HOH
HOH
294
A
HOH
48
4
HOH
HOH
295
A
HOH
49
4
HOH
HOH
296
A
HOH
52
4
HOH
HOH
297
A
HOH
53
4
HOH
HOH
298
A
HOH
54
4
HOH
HOH
299
A
HOH
56
4
HOH
HOH
300
A
HOH
57
4
HOH
HOH
301
A
HOH
58
4
HOH
HOH
302
A
HOH
59
4
HOH
HOH
303
A
HOH
60
4
HOH
HOH
304
A
HOH
61
4
HOH
HOH
305
A
HOH
62
4
HOH
HOH
306
A
HOH
63
4
HOH
HOH
307
A
HOH
64
4
HOH
HOH
308
A
HOH
66
4
HOH
HOH
309
A
HOH
67
4
HOH
HOH
310
A
HOH
68
4
HOH
HOH
311
A
HOH
69
4
HOH
HOH
312
A
HOH
70
4
HOH
HOH
313
A
HOH
71
4
HOH
HOH
314
A
HOH
73
4
HOH
HOH
315
A
HOH
74
4
HOH
HOH
316
A
HOH
75
4
HOH
HOH
317
A
HOH
76
4
HOH
HOH
318
A
HOH
77
4
HOH
HOH
319
A
HOH
78
4
HOH
HOH
320
A
HOH
79
4
HOH
HOH
321
A
HOH
81
4
HOH
HOH
322
A
HOH
82
4
HOH
HOH
323
A
HOH
83
4
HOH
HOH
324
A
HOH
84
4
HOH
HOH
325
A
HOH
86
4
HOH
HOH
326
A
HOH
87
4
HOH
HOH
327
A
HOH
88
4
HOH
HOH
328
A
HOH
90
4
HOH
HOH
329
A
HOH
91
4
HOH
HOH
330
A
HOH
93
4
HOH
HOH
331
A
HOH
95
4
HOH
HOH
332
A
HOH
96
4
HOH
HOH
333
A
HOH
99
4
HOH
HOH
334
A
HOH
101
4
HOH
HOH
335
A
HOH
102
4
HOH
HOH
336
A
HOH
103
4
HOH
HOH
337
A
HOH
104
4
HOH
HOH
338
A
HOH
105
4
HOH
HOH
339
A
HOH
106
4
HOH
HOH
340
A
HOH
108
4
HOH
HOH
341
A
HOH
110
4
HOH
HOH
342
A
HOH
111
4
HOH
HOH
343
A
HOH
114
4
HOH
HOH
344
A
HOH
115
4
HOH
HOH
345
A
HOH
116
4
HOH
HOH
346
A
HOH
117
4
HOH
HOH
347
A
HOH
118
4
HOH
HOH
348
A
HOH
120
4
HOH
HOH
349
A
HOH
121
4
HOH
HOH
350
A
HOH
122
4
HOH
HOH
351
A
HOH
123
4
HOH
HOH
352
A
HOH
124
4
HOH
HOH
353
A
HOH
125
4
HOH
HOH
354
A
HOH
126
4
HOH
HOH
355
A
HOH
127
4
HOH
HOH
356
A
HOH
128
4
HOH
HOH
357
A
HOH
129
4
HOH
HOH
358
A
HOH
130
4
HOH
HOH
359
A
HOH
131
4
HOH
HOH
360
A
HOH
132
4
HOH
HOH
361
A
HOH
133
4
HOH
HOH
362
A
HOH
134
4
HOH
HOH
363
A
HOH
135
4
HOH
HOH
364
A
HOH
136
4
HOH
HOH
365
A
HOH
137
4
HOH
HOH
366
A
HOH
138
4
HOH
HOH
367
A
HOH
139
4
HOH
HOH
368
A
HOH
140
4
HOH
HOH
369
A
HOH
141
4
HOH
HOH
370
A
HOH
142
4
HOH
HOH
371
A
HOH
143
4
HOH
HOH
372
A
HOH
144
4
HOH
HOH
373
A
HOH
145
4
HOH
HOH
374
A
HOH
20
4
HOH
HOH
29
I
HOH
24
4
HOH
HOH
30
I
HOH
50
4
HOH
HOH
31
I
HOH
51
4
HOH
HOH
32
I
HOH
65
4
HOH
HOH
33
I
HOH
72
4
HOH
HOH
34
I
HOH
119
4
HOH
HOH
35
I
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
ALA
23
n
8
ALA
23
A
ALA
24
n
9
ALA
24
A
ASN
25
n
10
ASN
25
A
SER
26
n
11
SER
26
A
ILE
27
n
12
ILE
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
SER
39
n
22
SER
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
ASN
48
n
31
ASN
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
ARG
62
n
45
ARG
62
A
ILE
63
n
46
ILE
63
A
GLN
64
n
47
GLN
64
A
VAL
65
n
48
VAL
65
A
ARG
66
n
49
ARG
66
A
LEU
67
n
50
LEU
67
A
GLY
69
n
51
GLY
69
A
GLU
70
n
52
GLU
70
A
HIS
71
n
53
HIS
71
A
ASN
72
n
54
ASN
72
A
ILE
73
n
55
ILE
73
A
ASP
74
n
56
ASP
74
A
VAL
75
n
57
VAL
75
A
LEU
76
n
58
LEU
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
ASN
84
n
66
ASN
84
A
ALA
85
n
67
ALA
85
A
ALA
86
n
68
ALA
86
A
LYS
87
n
69
LYS
87
A
ILE
88
n
70
ILE
88
A
ILE
89
n
71
ILE
89
A
THR
90
n
72
THR
90
A
HIS
91
n
73
HIS
91
A
PRO
92
n
74
PRO
92
A
ASN
93
n
75
ASN
93
A
PHE
94
n
76
PHE
94
A
ASN
95
n
77
ASN
95
A
GLY
96
n
78
GLY
96
A
ASN
97
n
79
ASN
97
A
THR
98
n
80
THR
98
A
LEU
99
n
81
LEU
99
A
ASP
100
n
82
ASP
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
SER
109
n
91
SER
109
A
SER
110
n
92
SER
110
A
PRO
111
n
93
PRO
111
A
ALA
112
n
94
ALA
112
A
THR
113
n
95
THR
113
A
LEU
114
n
96
LEU
114
A
ASN
115
n
97
ASN
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
THR
120
n
102
THR
120
A
VAL
121
n
103
VAL
121
A
SER
122
n
104
SER
122
A
LEU
123
n
105
LEU
123
A
PRO
124
n
106
PRO
124
A
ARG
125
n
107
ARG
125
A
SER
127
n
108
SER
127
A
CYS
128
n
109
CYS
128
A
ALA
129
n
110
ALA
129
A
ALA
130
n
111
ALA
130
A
ALA
132
n
112
ALA
132
A
GLY
133
n
113
GLY
133
A
THR
134
n
114
THR
134
A
GLU
135
n
115
GLU
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
SER
149
n
129
SER
149
A
SER
150
n
130
SER
150
A
TYR
151
n
131
TYR
151
A
PRO
152
n
132
PRO
152
A
SER
153
n
133
SER
153
A
LEU
154
n
134
LEU
154
A
LEU
155
n
135
LEU
155
A
GLN
156
n
136
GLN
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
VAL
162
n
142
VAL
162
A
LEU
163
n
143
LEU
163
A
SER
164
n
144
SER
164
A
ASN
165
n
145
ASN
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
SER
171
n
151
SER
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
GLY
178
n
158
GLY
178
A
ASN
179
n
159
ASN
179
A
MET
180
n
160
MET
180
A
ILE
181
n
161
ILE
181
A
CYS
182
n
162
CYS
182
A
VAL
183
n
163
VAL
183
A
GLY
184
n
164
A
GLY
184
A
PHE
184
n
165
PHE
184
A
LEU
185
n
166
LEU
185
A
GLN
186
n
167
GLN
186
A
GLY
187
n
168
GLY
187
A
GLY
188
n
169
A
GLY
188
A
LYS
188
n
170
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
ASN
202
n
184
ASN
202
A
GLY
203
n
185
GLY
203
A
GLN
204
n
186
GLN
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
TYR
217
n
195
TYR
217
A
GLY
219
n
196
GLY
219
A
CYS
220
n
197
CYS
220
A
ALA
221
n
198
A
ALA
221
A
GLN
221
n
199
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
ASN
236
n
214
ASN
236
A
TRP
237
n
215
TRP
237
A
ILE
238
n
216
ILE
238
A
GLN
239
n
217
GLN
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
ALA
244
n
222
ALA
244
A
ASN
245
n
223
ASN
245
A
ARG
1
n
1
ARG
1
I
ILE
2
n
2
ILE
2
I
CYS
3
n
3
CYS
3
I
PRO
4
n
4
PRO
4
I
ARG
5
n
5
ARG
5
I
ILE
6
n
6
ILE
6
I
TRP
7
n
7
TRP
7
I
MET
8
n
8
MET
8
I
GLU
9
n
9
GLU
9
I
CYS
10
n
10
CYS
10
I
THR
11
n
11
THR
11
I
ARG
12
n
12
ARG
12
I
ASP
13
n
13
ASP
13
I
SER
14
n
14
SER
14
I
ASP
15
n
15
ASP
15
I
CYS
16
n
16
CYS
16
I
MET
17
n
17
MET
17
I
ALA
18
n
18
ALA
18
I
LYS
19
n
19
LYS
19
I
CYS
20
n
20
CYS
20
I
ILE
21
n
21
ILE
21
I
CYS
22
n
22
CYS
22
I
VAL
23
n
23
VAL
23
I
ALA
24
n
24
ALA
24
I
GLY
25
n
25
GLY
25
I
HIS
26
n
26
HIS
26
I
CYS
27
n
27
CYS
27
I
GLY
28
n
28
GLY
28
I
author_and_software_defined_assembly
PISA
2
dimeric
1590
-20
9970
A
GLU
77
A
OE1
GLU
59
1_555
A
CA
246
C
CA
CA
1_555
A
GLU
80
A
OE2
GLU
62
1_555
86.4
A
GLU
77
A
OE1
GLU
59
1_555
A
CA
246
C
CA
CA
1_555
A
ASN
72
A
O
ASN
54
1_555
84.9
A
GLU
80
A
OE2
GLU
62
1_555
A
CA
246
C
CA
CA
1_555
A
ASN
72
A
O
ASN
54
1_555
167.1
A
GLU
77
A
OE1
GLU
59
1_555
A
CA
246
C
CA
CA
1_555
A
VAL
75
A
O
VAL
57
1_555
104.2
A
GLU
80
A
OE2
GLU
62
1_555
A
CA
246
C
CA
CA
1_555
A
VAL
75
A
O
VAL
57
1_555
93.4
A
ASN
72
A
O
ASN
54
1_555
A
CA
246
C
CA
CA
1_555
A
VAL
75
A
O
VAL
57
1_555
79.6
A
GLU
77
A
OE1
GLU
59
1_555
A
CA
246
C
CA
CA
1_555
A
GLU
70
A
OE1
GLU
52
1_555
100.1
A
GLU
80
A
OE2
GLU
62
1_555
A
CA
246
C
CA
CA
1_555
A
GLU
70
A
OE1
GLU
52
1_555
101.6
A
ASN
72
A
O
ASN
54
1_555
A
CA
246
C
CA
CA
1_555
A
GLU
70
A
OE1
GLU
52
1_555
89.3
A
VAL
75
A
O
VAL
57
1_555
A
CA
246
C
CA
CA
1_555
A
GLU
70
A
OE1
GLU
52
1_555
152.1
A
GLU
77
A
OE1
GLU
59
1_555
A
CA
246
C
CA
CA
1_555
A
HOH
254
D
O
HOH
1_555
173.0
A
GLU
80
A
OE2
GLU
62
1_555
A
CA
246
C
CA
CA
1_555
A
HOH
254
D
O
HOH
1_555
89.3
A
ASN
72
A
O
ASN
54
1_555
A
CA
246
C
CA
CA
1_555
A
HOH
254
D
O
HOH
1_555
100.2
A
VAL
75
A
O
VAL
57
1_555
A
CA
246
C
CA
CA
1_555
A
HOH
254
D
O
HOH
1_555
81.6
A
GLU
70
A
OE1
GLU
52
1_555
A
CA
246
C
CA
CA
1_555
A
HOH
254
D
O
HOH
1_555
75.2
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
183
A
N
VAL
163
A
O
GLY
226
A
O
GLY
204
A
N
THR
229
A
N
THR
207
A
O
ILE
212
A
O
ILE
190
A
N
GLN
210
A
N
GLN
188
A
O
VAL
199
A
O
VAL
181
A
N
VAL
200
A
N
VAL
182
A
O
LEU
137
A
O
LEU
117
A
O
GLY
140
A
O
GLY
120
A
N
GLN
156
A
N
GLN
136
A
N
CYS
157
A
N
CYS
137
A
O
TYR
20
A
O
TYR
5
A
N
VAL
183
A
N
VAL
163
A
O
GLY
226
A
O
GLY
204
A
N
THR
229
A
N
THR
207
A
O
ILE
212
A
O
ILE
190
A
O
LEU
33
A
O
LEU
18
A
N
PHE
41
A
N
PHE
24
A
N
ILE
47
A
N
ILE
30
A
O
TRP
51
A
O
TRP
34
A
N
SER
54
A
N
SER
37
A
O
MET
104
A
O
MET
86
A
O
LYS
107
A
O
LYS
89
A
N
ALA
86
A
N
ALA
68
A
O
ILE
83
A
O
ILE
65
A
N
VAL
65
A
N
VAL
48
A
N
ARG
66
A
N
ARG
49
A
O
SER
32
A
O
SER
17
1
A
CG
ARG
62
A
CG
ARG
45
0
Y
1
A
CD
ARG
62
A
CD
ARG
45
0
Y
1
A
NE
ARG
62
A
NE
ARG
45
0
Y
1
A
CZ
ARG
62
A
CZ
ARG
45
0
Y
1
A
NH1
ARG
62
A
NH1
ARG
45
0
Y
1
A
NH2
ARG
62
A
NH2
ARG
45
0
Y
1
A
CB
ASN
79
A
CB
ASN
61
0
Y
1
A
CG
ASN
79
A
CG
ASN
61
0
Y
1
A
OD1
ASN
79
A
OD1
ASN
61
0
Y
1
A
ND2
ASN
79
A
ND2
ASN
61
0
Y
1
A
CG
ARG
125
A
CG
ARG
107
0
Y
1
A
CD
ARG
125
A
CD
ARG
107
0
Y
1
A
NE
ARG
125
A
NE
ARG
107
0
Y
1
A
CZ
ARG
125
A
CZ
ARG
107
0
Y
1
A
NH1
ARG
125
A
NH1
ARG
107
0
Y
1
A
NH2
ARG
125
A
NH2
ARG
107
0
Y
1
A
CE
LYS
145
A
CE
LYS
125
0
Y
1
A
NZ
LYS
145
A
NZ
LYS
125
0
Y
1
A
O
SER
147
A
O
SER
127
0
Y
1
A
OG
SER
147
A
OG
SER
127
0
Y
1
A
OG
SER
149
A
OG
SER
129
0
Y
1
A
CD
GLN
221
A
CD
GLN
199
0
Y
1
A
OE1
GLN
221
A
OE1
GLN
199
0
Y
1
A
CG
LYS
222
A
CG
LYS
200
0
Y
1
A
CD
LYS
222
A
CD
LYS
200
0
Y
1
A
CE
LYS
222
A
CE
LYS
200
0
Y
1
A
NZ
LYS
222
A
NZ
LYS
200
0
Y
1
A
OD1
ASN
236
A
OD1
ASN
214
0
Y
1
A
ND2
ASN
236
A
ND2
ASN
214
0
Y
1
A
CD
GLN
239
A
CD
GLN
217
0
Y
1
A
CG
GLN
240
A
CG
GLN
218
0
Y
1
A
CD
GLN
240
A
CD
GLN
218
0
Y
1
A
OE1
GLN
240
A
OE1
GLN
218
0
Y
1
A
NE2
GLN
240
A
NE2
GLN
218
0
Y
1
A
A
HH
H2
TYR
HOH
228
306
1.29
1
A
A
HD22
HH
ASN
TYR
101
234
1.33
1
A
A
HD21
HZ3
ASN
LYS
165
169
1.35
1
A
TYR
217
0.068
SIDE CHAIN
1
-3.10
0.50
120.30
117.20
A
A
A
NE
CZ
NH2
ARG
ARG
ARG
66
66
66
N
1
-3.10
0.50
120.30
117.20
A
A
A
NE
CZ
NH2
ARG
ARG
ARG
117
117
117
N
1
6.07
0.50
120.30
126.37
I
I
I
NE
CZ
NH1
ARG
ARG
ARG
1
1
1
N
1
-6.48
0.50
120.30
113.82
I
I
I
NE
CZ
NH2
ARG
ARG
ARG
1
1
1
N
1
A
ASN
25
81.17
-12.90
1
A
HIS
71
-132.56
-58.25
1
A
ASN
115
-149.65
-150.82
1
A
SER
214
-125.70
-66.53
1
I
ARG
5
-91.12
34.71
1
I
ALA
18
42.22
-128.09
0.167
0.167
1.6
1
1.6
135
1991
1
0
1855
0.011
2.2
14.8
phasing
SQUASH
model building
X-PLOR
refinement
X-PLOR
phasing
X-PLOR
TRYPSIN (E.C.3.4.21.4) COMPLEXED WITH INHIBITOR FROM BITTER GOURD
THE REFINED 1.6 ANGSTROMS RESOLUTION CRYSTAL STRUCTURE OF THE COMPLEX FORMED BETWEEN PORCINE BETA-TRYPSIN AND MCTI-A, A TRYPSIN INHIBITOR OF SQUASH FAMILY
1
N
N
2
N
N
3
N
N
4
N
N
4
N
N
A
SER
164
A
SER
144
HELX_P
A
PRO
173
A
PRO
153
1
H1
10
A
TYR
234
A
TYR
212
HELX_P
A
ASN
245
A
ASN
223
1
H2
12
disulf
2.011
A
CYS
22
A
SG
CYS
7
1_555
A
CYS
157
A
SG
CYS
137
1_555
disulf
2.022
A
CYS
42
A
SG
CYS
25
1_555
A
CYS
58
A
SG
CYS
41
1_555
disulf
2.025
A
CYS
128
A
SG
CYS
109
1_555
A
CYS
232
A
SG
CYS
210
1_555
disulf
2.017
A
CYS
136
A
SG
CYS
116
1_555
A
CYS
201
A
SG
CYS
183
1_555
disulf
2.022
A
CYS
168
A
SG
CYS
148
1_555
A
CYS
182
A
SG
CYS
162
1_555
disulf
2.018
A
CYS
191
A
SG
CYS
173
1_555
A
CYS
220
A
SG
CYS
197
1_555
disulf
2.010
I
CYS
3
B
SG
CYS
3
1_555
I
CYS
20
B
SG
CYS
20
1_555
disulf
2.031
I
CYS
10
B
SG
CYS
10
1_555
I
CYS
22
B
SG
CYS
22
1_555
disulf
2.034
I
CYS
16
B
SG
CYS
16
1_555
I
CYS
27
B
SG
CYS
27
1_555
metalc
2.804
A
CA
246
C
CA
CA
1_555
A
GLU
77
A
OE1
GLU
59
1_555
metalc
2.338
A
CA
246
C
CA
CA
1_555
A
GLU
80
A
OE2
GLU
62
1_555
metalc
2.425
A
CA
246
C
CA
CA
1_555
A
ASN
72
A
O
ASN
54
1_555
metalc
2.311
A
CA
246
C
CA
CA
1_555
A
VAL
75
A
O
VAL
57
1_555
metalc
2.362
A
CA
246
C
CA
CA
1_555
A
GLU
70
A
OE1
GLU
52
1_555
metalc
2.638
A
CA
246
C
CA
CA
1_555
A
HOH
254
D
O
HOH
1_555
HYDROLASE/HYDROLASE INHIBITOR
HYDROLASE-HYDROLASE INHIBITOR COMPLEX, PROTEINASE
TRYP_PIG
UNP
1
1
P00761
FPTDDDDKIVGGYTCAANSIPYQVSLNSGSHFCGGSLINSQWVVSAAHCYKSRIQVRLGEHNIDVLEGNEQFINAAKIIT
HPNFNGNTLDNDIMLIKLSSPATLNSRVATVSLPRSCAAAGTECLISGWGNTKSSGSSYPSLLQCLKAPVLSDSSCKSSY
PGQITGNMICVGFLEGGKDSCQGDSGGPVVCNGQLQGIVSWGYGCAQKNKPGVYTKVCNYVNWIQQTIAAN
ITRA_MOMCH
UNP
2
1
P30709
RSCPRIWMECTRDSDCMAKCICVAGHCG
9
231
1MCT
16
245
P00761
A
1
1
223
1
28
1MCT
1
28
P30709
I
2
1
28
1
ASP
CONFLICT
ASN
165
1MCT
A
P00761
UNP
153
145
1
GLU
CONFLICT
GLN
186
1MCT
A
P00761
UNP
175
167
2
SER
CONFLICT
ILE
2
1MCT
I
P30709
UNP
2
2
7
4
7
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
A
MET
180
A
MET
160
A
VAL
183
A
VAL
163
A
GLY
226
A
GLY
204
A
LYS
230
A
LYS
208
A
GLN
204
A
GLN
186
A
GLY
216
A
GLY
194
A
PRO
198
A
PRO
180
A
CYS
201
A
CYS
183
A
GLU
135
A
GLU
115
A
GLY
140
A
GLY
120
A
GLN
156
A
GLN
136
A
PRO
161
A
PRO
141
A
TYR
20
A
TYR
5
A
THR
21
A
THR
6
A
MET
180
A
MET
160
A
VAL
183
A
VAL
163
A
GLY
226
A
GLY
204
A
LYS
230
A
LYS
208
A
GLN
204
A
GLN
186
A
GLY
216
A
GLY
194
A
GLN
30
A
GLN
15
A
ASN
34
A
ASN
19
A
HIS
40
A
HIS
23
A
ASN
48
A
ASN
31
A
TRP
51
A
TRP
34
A
SER
54
A
SER
37
A
MET
104
A
MET
86
A
LEU
108
A
LEU
90
A
GLN
81
A
GLN
63
A
THR
90
A
THR
72
A
GLN
64
A
GLN
47
A
LEU
67
A
LEU
50
A
GLN
30
A
GLN
15
A
ASN
34
A
ASN
19
BINDING SITE FOR RESIDUE CA A 246
Software
6
A
GLU
70
A
GLU
52
6
1_555
A
ASN
72
A
ASN
54
6
1_555
A
VAL
75
A
VAL
57
6
1_555
A
GLU
77
A
GLU
59
6
1_555
A
GLU
80
A
GLU
62
6
1_555
A
HOH
254
D
HOH
6
1_555
154
P 32 2 1