0.019220
0.000000
0.000000
0.000000
0.017313
0.000000
0.000000
0.000000
0.013277
0.00000
0.00000
0.00000
Mattos, C.
Petsko, G.A.
Ringe, D.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
4
90.00
90.00
90.00
52.030
57.760
75.319
C21 H19 F6 N3 O3
475.384
N-(trifluoroacetyl)-L-phenylalanyl-N-[4-(trifluoromethyl)phenyl]-L-alaninamide
TFAP
peptide-like
C2 H4 O2
60.052
ACETIC ACID
non-polymer
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
US
Biochemistry
BICHAW
0033
0006-2960
34
3193
3203
10.1021/bi00010a008
7880814
Structural analysis of the active site of porcine pancreatic elastase based on the X-ray crystal structures of complexes with trifluoroacetyl-dipeptide-anilide inhibitors.
1995
US
Nat.Struct.Biol.
NSBIEW
2024
1072-8368
1
55
Analogous Inhibitors of Elastase Do not Always Bind Analogously
1994
UK
J.Mol.Recog.
JMORE4
0814
0952-3499
3
36
Interaction of the Peptide Cf3-Leu-Ala-Nh-C6H4-Cf3(Tfla) with Porcine Pancreatic Elastase. X-Ray Studies at 1.8 Angstroms
1990
DK
Acta Crystallogr.,Sect.B
ASBSDK
0622
0108-7681
44
26
Structure of Native Porcine Pancreatic Elastase at 1.65 Angstroms Resolution
1988
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
189
533
Structure of the Product Complex of Acetyl-Ala-Pro-Ala with Porcine Pancreatic Elastase at 1.65 Angstroms Resolution
1986
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
162
645
Crystallographic Study of the Binding of a Tri-Fluoroacetyl Dipeptide Anilide Inhibitor with Elastase
1982
IX
Eur.J.Biochem.
EJBCAI
0262
0014-2956
107
423
The Indirect Mechanism of Action of the Trifluoroacetyl Peptides on Elastase
1980
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
118
137
The Atomic Structure of Crystalline Porcine Pancreatic Elastase at 2.5 Angstroms Resolution. Comparisons with the Structure of Alpha-Chymotrypsin
1978
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
25928.031
ELASTASE
3.4.21.36
1
man
polymer
475.384
N-(trifluoroacetyl)-L-phenylalanyl-N-[4-(trifluoromethyl)phenyl]-L-alaninamide
1
syn
non-polymer
40.078
CALCIUM ION
1
syn
non-polymer
60.052
ACETIC ACID
1
syn
non-polymer
18.015
water
133
nat
water
no
no
VVGGTEAQRNSWPSQISLQYRSGSSWAHTCGGTLIRQNWVMTAAHCVDRELTFRVVVGEHNLNQNNGTEQYVGVQKIVVH
PYWNTDDVAAGYDIALLRLAQSVTLNSYVQLGVLPRAGTILANNSPCYITGWGLTRTNGQLAQTLQQAYLPTVDYAICSS
SSYWGSTVKNSMVCAGGDGVRSGCQGDSGGPLHCLVNGQYAVHGVTSFVSRLGCNVTRKPTVFTRVSAYISWINNVIASN
VVGGTEAQRNSWPSQISLQYRSGSSWAHTCGGTLIRQNWVMTAAHCVDRELTFRVVVGEHNLNQNNGTEQYVGVQKIVVH
PYWNTDDVAAGYDIALLRLAQSVTLNSYVQLGVLPRAGTILANNSPCYITGWGLTRTNGQLAQTLQQAYLPTVDYAICSS
SSYWGSTVKNSMVCAGGDGVRSGCQGDSGGPLHCLVNGQYAVHGVTSFVSRLGCNVTRKPTVFTRVSAYISWINNVIASN
E
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
pig
sample
9823
PANCREAS
Sus scrofa
2.14
42.59
THE COMPLEX WAS CO-CRYSTALLIZED. THE CO-CRYSTALS WERE
GROWN BY THE METHOD OF VAPOR DIFFUSION IN 40 MICROLITER
DROPS CONTAINING 7MG/ML OF ELASTASE, 0.1 MILLIMOLAR
TFA-PHE-ALA-TFM, 1.4 MILLIMOLAR SODIUM SULFATE AND 100
MILLIMOLAR SODIUM ACETATE AT PH 5. THE RESERVOIR CONSISTED
OF 100 MILLIMOLAR SODIUM SULFATE AND 100 MILLIMOLAR ACETATE
BUFFER AT PH 5.
repository
Initial release
Version format compliance
Atomic model
Database references
Derived calculations
Non-polymer description
Structure summary
Version format compliance
Other
1
0
1995-02-14
1
1
2008-03-03
1
2
2011-07-13
1
3
2012-12-12
SHEET
THE TWO SEVEN-STRANDED SHEETS IN THIS STRUCTURE ARE REALLY
SIX-STRANDED BETA BARRELS. THIS IS DENOTED BY THE FIRST
STRAND RECURRING AS THE LAST STRAND.
Y
1994-10-24
REL
0Z0
N-(trifluoroacetyl)-L-phenylalanyl-N-[4-(trifluoromethyl)phenyl]-L-alaninamide
CA
CALCIUM ION
ACY
ACETIC ACID
HOH
water
THE IDENTITY OF ASN A 81 AGREES WITH THE SEQUENCES OF
SEVERAL OTHER ELASTASE STRUCTURES. THE AUTHORS THEREFORE
BELIEVE IT TO BE CORRECT.
Inhibitor
N-(trifluoroacetyl)-L-phenylalanyl-N-[4-(trifluoromethyl)phenyl]-L-alaninamide
Peptide-like
TFA
256
2
0Z0
0Z0
256
E
CA
280
3
CA
CA
280
E
ACY
300
4
ACY
ACY
300
E
HOH
290
5
HOH
HOH
290
E
HOH
301
5
HOH
HOH
301
E
HOH
302
5
HOH
HOH
302
E
HOH
303
5
HOH
HOH
303
E
HOH
304
5
HOH
HOH
304
E
HOH
305
5
HOH
HOH
305
E
HOH
306
5
HOH
HOH
306
E
HOH
307
5
HOH
HOH
307
E
HOH
308
5
HOH
HOH
308
E
HOH
309
5
HOH
HOH
309
E
HOH
310
5
HOH
HOH
310
E
HOH
311
5
HOH
HOH
311
E
HOH
312
5
HOH
HOH
312
E
HOH
313
5
HOH
HOH
313
E
HOH
314
5
HOH
HOH
314
E
HOH
315
5
HOH
HOH
315
E
HOH
316
5
HOH
HOH
316
E
HOH
317
5
HOH
HOH
317
E
HOH
318
5
HOH
HOH
318
E
HOH
319
5
HOH
HOH
319
E
HOH
320
5
HOH
HOH
320
E
HOH
321
5
HOH
HOH
321
E
HOH
322
5
HOH
HOH
322
E
HOH
323
5
HOH
HOH
323
E
HOH
324
5
HOH
HOH
324
E
HOH
326
5
HOH
HOH
326
E
HOH
327
5
HOH
HOH
327
E
HOH
328
5
HOH
HOH
328
E
HOH
329
5
HOH
HOH
329
E
HOH
331
5
HOH
HOH
331
E
HOH
332
5
HOH
HOH
332
E
HOH
401
5
HOH
HOH
401
E
HOH
402
5
HOH
HOH
402
E
HOH
403
5
HOH
HOH
403
E
HOH
404
5
HOH
HOH
404
E
HOH
405
5
HOH
HOH
405
E
HOH
407
5
HOH
HOH
407
E
HOH
408
5
HOH
HOH
408
E
HOH
410
5
HOH
HOH
410
E
HOH
411
5
HOH
HOH
411
E
HOH
412
5
HOH
HOH
412
E
HOH
413
5
HOH
HOH
413
E
HOH
414
5
HOH
HOH
414
E
HOH
415
5
HOH
HOH
415
E
HOH
416
5
HOH
HOH
416
E
HOH
417
5
HOH
HOH
417
E
HOH
418
5
HOH
HOH
418
E
HOH
419
5
HOH
HOH
419
E
HOH
421
5
HOH
HOH
421
E
HOH
423
5
HOH
HOH
423
E
HOH
425
5
HOH
HOH
425
E
HOH
427
5
HOH
HOH
427
E
HOH
428
5
HOH
HOH
428
E
HOH
429
5
HOH
HOH
429
E
HOH
430
5
HOH
HOH
430
E
HOH
431
5
HOH
HOH
431
E
HOH
432
5
HOH
HOH
432
E
HOH
433
5
HOH
HOH
433
E
HOH
437
5
HOH
HOH
437
E
HOH
438
5
HOH
HOH
438
E
HOH
439
5
HOH
HOH
439
E
HOH
440
5
HOH
HOH
440
E
HOH
441
5
HOH
HOH
441
E
HOH
442
5
HOH
HOH
442
E
HOH
443
5
HOH
HOH
443
E
HOH
444
5
HOH
HOH
444
E
HOH
445
5
HOH
HOH
445
E
HOH
446
5
HOH
HOH
446
E
HOH
448
5
HOH
HOH
448
E
HOH
449
5
HOH
HOH
449
E
HOH
450
5
HOH
HOH
450
E
HOH
452
5
HOH
HOH
452
E
HOH
453
5
HOH
HOH
453
E
HOH
455
5
HOH
HOH
455
E
HOH
457
5
HOH
HOH
457
E
HOH
458
5
HOH
HOH
458
E
HOH
459
5
HOH
HOH
459
E
HOH
460
5
HOH
HOH
460
E
HOH
461
5
HOH
HOH
461
E
HOH
515
5
HOH
HOH
515
E
HOH
516
5
HOH
HOH
516
E
HOH
518
5
HOH
HOH
518
E
HOH
519
5
HOH
HOH
519
E
HOH
521
5
HOH
HOH
521
E
HOH
522
5
HOH
HOH
522
E
HOH
523
5
HOH
HOH
523
E
HOH
524
5
HOH
HOH
524
E
HOH
527
5
HOH
HOH
527
E
HOH
529
5
HOH
HOH
529
E
HOH
530
5
HOH
HOH
530
E
HOH
531
5
HOH
HOH
531
E
HOH
532
5
HOH
HOH
532
E
HOH
533
5
HOH
HOH
533
E
HOH
535
5
HOH
HOH
535
E
HOH
536
5
HOH
HOH
536
E
HOH
537
5
HOH
HOH
537
E
HOH
538
5
HOH
HOH
538
E
HOH
539
5
HOH
HOH
539
E
HOH
541
5
HOH
HOH
541
E
HOH
543
5
HOH
HOH
543
E
HOH
544
5
HOH
HOH
544
E
HOH
545
5
HOH
HOH
545
E
HOH
546
5
HOH
HOH
546
E
HOH
547
5
HOH
HOH
547
E
HOH
548
5
HOH
HOH
548
E
HOH
601
5
HOH
HOH
601
E
HOH
602
5
HOH
HOH
602
E
HOH
603
5
HOH
HOH
603
E
HOH
604
5
HOH
HOH
604
E
HOH
606
5
HOH
HOH
606
E
HOH
608
5
HOH
HOH
608
E
HOH
609
5
HOH
HOH
609
E
HOH
612
5
HOH
HOH
612
E
HOH
613
5
HOH
HOH
613
E
HOH
614
5
HOH
HOH
614
E
HOH
616
5
HOH
HOH
616
E
HOH
620
5
HOH
HOH
620
E
HOH
622
5
HOH
HOH
622
E
HOH
623
5
HOH
HOH
623
E
HOH
624
5
HOH
HOH
624
E
HOH
625
5
HOH
HOH
625
E
HOH
631
5
HOH
HOH
631
E
HOH
636
5
HOH
HOH
636
E
HOH
642
5
HOH
HOH
642
E
HOH
643
5
HOH
HOH
643
E
HOH
644
5
HOH
HOH
644
E
HOH
645
5
HOH
HOH
645
E
HOH
646
5
HOH
HOH
646
E
HOH
647
5
HOH
HOH
647
E
HOH
648
5
HOH
HOH
648
E
HOH
649
5
HOH
HOH
649
E
HOH
650
5
HOH
HOH
650
E
HOH
651
5
HOH
HOH
651
E
VAL
16
n
1
VAL
16
E
VAL
17
n
2
VAL
17
E
GLY
18
n
3
GLY
18
E
GLY
19
n
4
GLY
19
E
THR
20
n
5
THR
20
E
GLU
21
n
6
GLU
21
E
ALA
22
n
7
ALA
22
E
GLN
23
n
8
GLN
23
E
ARG
24
n
9
ARG
24
E
ASN
25
n
10
ASN
25
E
SER
26
n
11
SER
26
E
TRP
27
n
12
TRP
27
E
PRO
28
n
13
PRO
28
E
SER
29
n
14
SER
29
E
GLN
30
n
15
GLN
30
E
ILE
31
n
16
ILE
31
E
SER
32
n
17
SER
32
E
LEU
33
n
18
LEU
33
E
GLN
34
n
19
GLN
34
E
TYR
35
n
20
TYR
35
E
ARG
36
n
21
ARG
36
E
SER
37
n
22
SER
37
E
GLY
38
n
23
GLY
38
E
SER
39
n
24
SER
39
E
SER
40
n
25
SER
40
E
TRP
41
n
26
TRP
41
E
ALA
42
n
27
ALA
42
E
HIS
43
n
28
HIS
43
E
THR
44
n
29
THR
44
E
CYS
45
n
30
CYS
45
E
GLY
46
n
31
GLY
46
E
GLY
47
n
32
GLY
47
E
THR
48
n
33
THR
48
E
LEU
49
n
34
LEU
49
E
ILE
50
n
35
ILE
50
E
ARG
51
n
36
ARG
51
E
GLN
52
n
37
GLN
52
E
ASN
53
n
38
ASN
53
E
TRP
54
n
39
TRP
54
E
VAL
55
n
40
VAL
55
E
MET
56
n
41
MET
56
E
THR
57
n
42
THR
57
E
ALA
58
n
43
ALA
58
E
ALA
59
n
44
ALA
59
E
HIS
60
n
45
HIS
60
E
CYS
61
n
46
CYS
61
E
VAL
62
n
47
VAL
62
E
ASP
63
n
48
ASP
63
E
ARG
64
n
49
ARG
64
E
GLU
65
n
50
GLU
65
E
LEU
66
n
51
LEU
66
E
THR
67
n
52
THR
67
E
PHE
68
n
53
PHE
68
E
ARG
69
n
54
ARG
69
E
VAL
70
n
55
VAL
70
E
VAL
71
n
56
VAL
71
E
VAL
72
n
57
VAL
72
E
GLY
73
n
58
GLY
73
E
GLU
74
n
59
GLU
74
E
HIS
75
n
60
HIS
75
E
ASN
76
n
61
ASN
76
E
LEU
77
n
62
LEU
77
E
ASN
78
n
63
ASN
78
E
GLN
79
n
64
GLN
79
E
ASN
80
n
65
ASN
80
E
ASN
81
n
66
ASN
81
E
GLY
82
n
67
GLY
82
E
THR
83
n
68
THR
83
E
GLU
84
n
69
GLU
84
E
GLN
85
n
70
GLN
85
E
TYR
86
n
71
TYR
86
E
VAL
87
n
72
VAL
87
E
GLY
88
n
73
GLY
88
E
VAL
89
n
74
VAL
89
E
GLN
90
n
75
GLN
90
E
LYS
91
n
76
LYS
91
E
ILE
92
n
77
ILE
92
E
VAL
93
n
78
VAL
93
E
VAL
94
n
79
VAL
94
E
HIS
95
n
80
HIS
95
E
PRO
96
n
81
PRO
96
E
TYR
97
n
82
TYR
97
E
TRP
98
n
83
TRP
98
E
ASN
99
n
84
ASN
99
E
THR
100
n
85
THR
100
E
ASP
101
n
86
ASP
101
E
ASP
102
n
87
ASP
102
E
VAL
103
n
88
VAL
103
E
ALA
104
n
89
ALA
104
E
ALA
105
n
90
ALA
105
E
GLY
106
n
91
GLY
106
E
TYR
107
n
92
TYR
107
E
ASP
108
n
93
ASP
108
E
ILE
109
n
94
ILE
109
E
ALA
110
n
95
ALA
110
E
LEU
111
n
96
LEU
111
E
LEU
112
n
97
LEU
112
E
ARG
113
n
98
ARG
113
E
LEU
114
n
99
LEU
114
E
ALA
115
n
100
ALA
115
E
GLN
116
n
101
GLN
116
E
SER
117
n
102
SER
117
E
VAL
118
n
103
VAL
118
E
THR
119
n
104
THR
119
E
LEU
120
n
105
LEU
120
E
ASN
121
n
106
ASN
121
E
SER
122
n
107
SER
122
E
TYR
123
n
108
TYR
123
E
VAL
124
n
109
VAL
124
E
GLN
125
n
110
GLN
125
E
LEU
126
n
111
LEU
126
E
GLY
127
n
112
GLY
127
E
VAL
128
n
113
VAL
128
E
LEU
129
n
114
LEU
129
E
PRO
130
n
115
PRO
130
E
ARG
131
n
116
ARG
131
E
ALA
132
n
117
ALA
132
E
GLY
133
n
118
GLY
133
E
THR
134
n
119
THR
134
E
ILE
135
n
120
ILE
135
E
LEU
136
n
121
LEU
136
E
ALA
137
n
122
ALA
137
E
ASN
138
n
123
ASN
138
E
ASN
139
n
124
ASN
139
E
SER
140
n
125
SER
140
E
PRO
141
n
126
PRO
141
E
CYS
142
n
127
CYS
142
E
TYR
143
n
128
TYR
143
E
ILE
144
n
129
ILE
144
E
THR
145
n
130
THR
145
E
GLY
146
n
131
GLY
146
E
TRP
147
n
132
TRP
147
E
GLY
148
n
133
GLY
148
E
LEU
149
n
134
LEU
149
E
THR
150
n
135
THR
150
E
ARG
151
n
136
ARG
151
E
THR
152
n
137
THR
152
E
ASN
153
n
138
ASN
153
E
GLY
154
n
139
GLY
154
E
GLN
155
n
140
GLN
155
E
LEU
156
n
141
LEU
156
E
ALA
157
n
142
ALA
157
E
GLN
158
n
143
GLN
158
E
THR
159
n
144
THR
159
E
LEU
160
n
145
LEU
160
E
GLN
161
n
146
GLN
161
E
GLN
162
n
147
GLN
162
E
ALA
163
n
148
ALA
163
E
TYR
164
n
149
TYR
164
E
LEU
165
n
150
LEU
165
E
PRO
166
n
151
PRO
166
E
THR
167
n
152
THR
167
E
VAL
168
n
153
VAL
168
E
ASP
169
n
154
ASP
169
E
TYR
170
n
155
TYR
170
E
ALA
171
n
156
ALA
171
E
ILE
172
n
157
ILE
172
E
CYS
173
n
158
CYS
173
E
SER
174
n
159
SER
174
E
SER
175
n
160
SER
175
E
SER
176
n
161
SER
176
E
SER
177
n
162
SER
177
E
TYR
178
n
163
TYR
178
E
TRP
179
n
164
TRP
179
E
GLY
180
n
165
GLY
180
E
SER
181
n
166
SER
181
E
THR
182
n
167
THR
182
E
VAL
183
n
168
VAL
183
E
LYS
184
n
169
LYS
184
E
ASN
185
n
170
ASN
185
E
SER
186
n
171
SER
186
E
MET
187
n
172
MET
187
E
VAL
188
n
173
VAL
188
E
CYS
189
n
174
CYS
189
E
ALA
190
n
175
ALA
190
E
GLY
191
n
176
GLY
191
E
GLY
192
n
177
GLY
192
E
ASP
193
n
178
ASP
193
E
GLY
194
n
179
GLY
194
E
VAL
195
n
180
VAL
195
E
ARG
196
n
181
ARG
196
E
SER
197
n
182
SER
197
E
GLY
198
n
183
GLY
198
E
CYS
199
n
184
CYS
199
E
GLN
200
n
185
GLN
200
E
GLY
201
n
186
GLY
201
E
ASP
202
n
187
ASP
202
E
SER
203
n
188
SER
203
E
GLY
204
n
189
GLY
204
E
GLY
205
n
190
GLY
205
E
PRO
206
n
191
PRO
206
E
LEU
207
n
192
LEU
207
E
HIS
208
n
193
HIS
208
E
CYS
209
n
194
CYS
209
E
LEU
210
n
195
LEU
210
E
VAL
211
n
196
VAL
211
E
ASN
212
n
197
ASN
212
E
GLY
213
n
198
GLY
213
E
GLN
214
n
199
GLN
214
E
TYR
215
n
200
TYR
215
E
ALA
216
n
201
ALA
216
E
VAL
217
n
202
VAL
217
E
HIS
218
n
203
HIS
218
E
GLY
219
n
204
GLY
219
E
VAL
220
n
205
VAL
220
E
THR
221
n
206
THR
221
E
SER
222
n
207
SER
222
E
PHE
223
n
208
PHE
223
E
VAL
224
n
209
VAL
224
E
SER
225
n
210
SER
225
E
ARG
226
n
211
ARG
226
E
LEU
227
n
212
LEU
227
E
GLY
228
n
213
GLY
228
E
CYS
229
n
214
CYS
229
E
ASN
230
n
215
ASN
230
E
VAL
231
n
216
VAL
231
E
THR
232
n
217
THR
232
E
ARG
233
n
218
ARG
233
E
LYS
234
n
219
LYS
234
E
PRO
235
n
220
PRO
235
E
THR
236
n
221
THR
236
E
VAL
237
n
222
VAL
237
E
PHE
238
n
223
PHE
238
E
THR
239
n
224
THR
239
E
ARG
240
n
225
ARG
240
E
VAL
241
n
226
VAL
241
E
SER
242
n
227
SER
242
E
ALA
243
n
228
ALA
243
E
TYR
244
n
229
TYR
244
E
ILE
245
n
230
ILE
245
E
SER
246
n
231
SER
246
E
TRP
247
n
232
TRP
247
E
ILE
248
n
233
ILE
248
E
ASN
249
n
234
ASN
249
E
ASN
250
n
235
ASN
250
E
VAL
251
n
236
VAL
251
E
ILE
252
n
237
ILE
252
E
ALA
253
n
238
ALA
253
E
SER
254
n
239
SER
254
E
ASN
255
n
240
ASN
255
E
author_defined_assembly
1
monomeric
E
ASN
76
A
O
ASN
61
1_555
E
CA
280
C
CA
CA
1_555
E
GLU
74
A
OE1
GLU
59
1_555
71.3
E
ASN
76
A
O
ASN
61
1_555
E
CA
280
C
CA
CA
1_555
E
HOH
327
E
O
HOH
1_555
104.2
E
GLU
74
A
OE1
GLU
59
1_555
E
CA
280
C
CA
CA
1_555
E
HOH
327
E
O
HOH
1_555
107.7
E
ASN
76
A
O
ASN
61
1_555
E
CA
280
C
CA
CA
1_555
E
GLU
84
A
OE2
GLU
69
1_555
171.3
E
GLU
74
A
OE1
GLU
59
1_555
E
CA
280
C
CA
CA
1_555
E
GLU
84
A
OE2
GLU
69
1_555
103.7
E
HOH
327
E
O
HOH
1_555
E
CA
280
C
CA
CA
1_555
E
GLU
84
A
OE2
GLU
69
1_555
84.0
E
ASN
76
A
O
ASN
61
1_555
E
CA
280
C
CA
CA
1_555
E
GLN
79
A
O
GLN
64
1_555
85.4
E
GLU
74
A
OE1
GLU
59
1_555
E
CA
280
C
CA
CA
1_555
E
GLN
79
A
O
GLN
64
1_555
152.9
E
HOH
327
E
O
HOH
1_555
E
CA
280
C
CA
CA
1_555
E
GLN
79
A
O
GLN
64
1_555
91.0
E
GLU
84
A
OE2
GLU
69
1_555
E
CA
280
C
CA
CA
1_555
E
GLN
79
A
O
GLN
64
1_555
97.5
E
ASN
76
A
O
ASN
61
1_555
E
CA
280
C
CA
CA
1_555
E
ASN
81
A
OD1
ASN
66
1_555
85.1
E
GLU
74
A
OE1
GLU
59
1_555
E
CA
280
C
CA
CA
1_555
E
ASN
81
A
OD1
ASN
66
1_555
74.2
E
HOH
327
E
O
HOH
1_555
E
CA
280
C
CA
CA
1_555
E
ASN
81
A
OD1
ASN
66
1_555
170.6
E
GLU
84
A
OE2
GLU
69
1_555
E
CA
280
C
CA
CA
1_555
E
ASN
81
A
OD1
ASN
66
1_555
86.6
E
GLN
79
A
O
GLN
64
1_555
E
CA
280
C
CA
CA
1_555
E
ASN
81
A
OD1
ASN
66
1_555
90.6
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
1
E
E
C5
O
0Z0
HOH
256
651
2.06
1
3.41
0.50
120.30
123.71
E
E
E
NE
CZ
NH1
ARG
ARG
ARG
24
24
24
N
1
6.63
0.80
106.30
112.93
E
E
E
CD1
CG
CD2
TRP
TRP
TRP
27
27
27
N
1
-6.46
0.80
107.30
100.84
E
E
E
CE2
CD2
CG
TRP
TRP
TRP
27
27
27
N
1
5.62
0.90
133.90
139.52
E
E
E
CG
CD2
CE3
TRP
TRP
TRP
27
27
27
N
1
7.37
0.80
106.30
113.67
E
E
E
CD1
CG
CD2
TRP
TRP
TRP
41
41
41
N
1
-5.70
0.80
107.30
101.60
E
E
E
CE2
CD2
CG
TRP
TRP
TRP
41
41
41
N
1
5.20
0.80
106.30
111.50
E
E
E
CD1
CG
CD2
TRP
TRP
TRP
54
54
54
N
1
-5.08
0.80
107.30
102.22
E
E
E
CE2
CD2
CG
TRP
TRP
TRP
54
54
54
N
1
4.61
0.50
120.30
124.91
E
E
E
NE
CZ
NH1
ARG
ARG
ARG
64
64
64
N
1
-4.28
0.50
120.30
116.02
E
E
E
NE
CZ
NH2
ARG
ARG
ARG
64
64
64
N
1
5.29
0.80
106.30
111.59
E
E
E
CD1
CG
CD2
TRP
TRP
TRP
98
98
98
N
1
-5.37
0.80
107.30
101.93
E
E
E
CE2
CD2
CG
TRP
TRP
TRP
98
98
98
N
1
7.34
1.10
114.20
121.54
E
E
E
CA
CB
SG
CYS
CYS
CYS
142
142
142
N
1
6.21
0.80
106.30
112.51
E
E
E
CD1
CG
CD2
TRP
TRP
TRP
147
147
147
N
1
-6.05
0.80
107.30
101.25
E
E
E
CE2
CD2
CG
TRP
TRP
TRP
147
147
147
N
1
-15.18
1.90
110.30
95.12
E
E
E
N
CA
CB
THR
THR
THR
167
167
167
N
1
-3.69
0.60
121.00
117.31
E
E
E
CB
CG
CD1
TYR
TYR
TYR
178
178
178
N
1
5.82
0.80
106.30
112.12
E
E
E
CD1
CG
CD2
TRP
TRP
TRP
179
179
179
N
1
-5.27
0.80
107.30
102.03
E
E
E
CE2
CD2
CG
TRP
TRP
TRP
179
179
179
N
1
-11.18
1.60
110.90
99.72
E
E
E
CG1
CB
CG2
VAL
VAL
VAL
183
183
183
N
1
3.21
0.50
120.30
123.51
E
E
E
NE
CZ
NH1
ARG
ARG
ARG
196
196
196
N
1
4.56
0.50
120.30
124.86
E
E
E
NE
CZ
NH1
ARG
ARG
ARG
226
226
226
N
1
-5.14
0.50
120.30
115.16
E
E
E
NE
CZ
NH2
ARG
ARG
ARG
226
226
226
N
1
3.09
0.50
120.30
123.39
E
E
E
NE
CZ
NH1
ARG
ARG
ARG
233
233
233
N
1
-15.80
2.10
111.80
96.00
E
E
E
CG
CD
NE
ARG
ARG
ARG
240
240
240
N
1
7.11
0.50
120.30
127.41
E
E
E
NE
CZ
NH1
ARG
ARG
ARG
240
240
240
N
1
-7.61
0.50
120.30
112.69
E
E
E
NE
CZ
NH2
ARG
ARG
ARG
240
240
240
N
1
5.42
0.80
106.30
111.72
E
E
E
CD1
CG
CD2
TRP
TRP
TRP
247
247
247
N
1
-4.89
0.80
107.30
102.41
E
E
E
CE2
CD2
CG
TRP
TRP
TRP
247
247
247
N
1
E
E
NE2
CD2
HIS
HIS
43
43
-0.066
0.011
1.373
1.307
N
1
E
E
NE2
CD2
HIS
HIS
60
60
-0.076
0.011
1.373
1.297
N
1
E
E
NE2
CD2
HIS
HIS
75
75
-0.069
0.011
1.373
1.304
N
1
E
E
NE2
CD2
HIS
HIS
95
95
-0.067
0.011
1.373
1.306
N
1
E
E
NE2
CD2
HIS
HIS
208
208
-0.068
0.011
1.373
1.305
N
1
E
HIS
75
-133.19
-50.15
1
E
TYR
178
-97.72
-117.11
1
E
PRO
235
-48.62
153.57
0.196
0.196
2.
10.
1
0.
2.
10.
133
1993
38
0
1822
model building
X-PLOR
refinement
X-PLOR
phasing
X-PLOR
ELASTASE (E.C.3.4.21.36) COMPLEXED WITH TRIFLUOROACETYL-L-PHENYLALANYL-L-ALANYL-P-TRIFLUOROMETHYLANINIDE (TFA-PHE-ALA-TFM)
Structural analysis of the active site of porcine pancreatic elastase based on the x-ray crystal structures of complexes with trifluoroacetyl-dipeptide-anilide inhibitors
1
N
N
2
N
N
3
N
N
4
N
N
5
N
N
E
ASP
169
A
ASP
154
HELX_P
E
SER
175
A
SER
160
1
H1
7
E
TYR
244
A
TYR
229
HELX_P
E
ASN
255
A
ASN
240
1
H2
12
disulf
2.028
E
CYS
45
A
SG
CYS
30
1_555
E
CYS
61
A
SG
CYS
46
1_555
disulf
1.982
E
CYS
142
A
SG
CYS
127
1_555
E
CYS
209
A
SG
CYS
194
1_555
disulf
1.991
E
CYS
173
A
SG
CYS
158
1_555
E
CYS
189
A
SG
CYS
174
1_555
disulf
2.019
E
CYS
199
A
SG
CYS
184
1_555
E
CYS
229
A
SG
CYS
214
1_555
metalc
2.442
E
CA
280
C
CA
CA
1_555
E
ASN
76
A
O
ASN
61
1_555
metalc
2.511
E
CA
280
C
CA
CA
1_555
E
GLU
74
A
OE1
GLU
59
1_555
metalc
2.398
E
CA
280
C
CA
CA
1_555
E
HOH
327
E
O
HOH
1_555
metalc
2.499
E
CA
280
C
CA
CA
1_555
E
GLU
84
A
OE2
GLU
69
1_555
metalc
2.407
E
CA
280
C
CA
CA
1_555
E
GLN
79
A
O
GLN
64
1_555
metalc
2.557
E
CA
280
C
CA
CA
1_555
E
ASN
81
A
OD1
ASN
66
1_555
HYDROLASE/HYDROLASE INHIBITOR
HYDROLASE-HYDROLASE INHIBITOR COMPLEX, SERINE PROTEINASE
EL1_PIG
UNP
1
27
P00772
VVGGTEAQRNSWPSQISLQYRSGSSWAHTCGGTLIRQNWVMTAAHCVDRELTFRVVVGEHNLNQNDGTEQYVGVQKIVVH
PYWNTDDVAAGYDIALLRLAQSVTLNSYVQLGVLPRAGTILANNSPCYITGWGLTRTNGQLAQTLQQAYLPTVDYAICSS
SSYWGSTVKNSMVCAGGDGVRSGCQGDSGGPLHCLVNGQYAVHGVTSFVSRLGCNVTRKPTVFTRVSAYISWINNVIASN
27
266
1ELD
16
255
P00772
E
1
1
240
1
ASP
CONFLICT
ASN
81
1ELD
E
P00772
UNP
92
66
7
7
3
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
E
SER
29
A
SER
14
E
SER
37
A
SER
22
E
SER
40
A
SER
25
E
ILE
50
A
ILE
35
E
ASN
53
A
ASN
38
E
ALA
59
A
ALA
44
E
ASP
108
A
ASP
93
E
GLN
116
A
GLN
101
E
GLU
84
A
GLU
69
E
HIS
95
A
HIS
80
E
PHE
68
A
PHE
53
E
GLY
73
A
GLY
58
E
SER
29
A
SER
14
E
SER
37
A
SER
22
E
ASN
139
A
ASN
124
E
THR
150
A
THR
135
E
GLY
154
A
GLY
139
E
VAL
168
A
VAL
153
E
SER
186
A
SER
171
E
VAL
195
A
VAL
180
E
ASN
230
A
ASN
215
E
VAL
241
A
VAL
226
E
HIS
218
A
HIS
203
E
VAL
224
A
VAL
209
E
SER
203
A
SER
188
E
CYS
209
A
CYS
194
E
ASN
139
A
ASN
124
E
THR
150
A
THR
135
E
GLY
154
A
GLY
139
E
ALA
157
A
ALA
142
E
TRP
147
A
TRP
132
E
LEU
149
A
LEU
134
E
GLN
200
A
GLN
185
E
ASP
202
A
ASP
187
BINDING SITE FOR RESIDUE 0Z0 E 256
Software
17
BINDING SITE FOR RESIDUE CA E 280
Software
6
BINDING SITE FOR RESIDUE ACY E 300
Software
7
E
HIS
60
A
HIS
45
17
1_555
E
GLU
65
A
GLU
50
17
4_456
E
LEU
66
A
LEU
51
17
4_456
E
VAL
103
A
VAL
88
17
1_555
E
ALA
104
A
ALA
89
17
1_555
E
THR
182
A
THR
167
17
1_555
E
CYS
199
A
CYS
184
17
1_555
E
GLN
200
A
GLN
185
17
1_555
E
SER
203
A
SER
188
17
1_555
E
THR
221
A
THR
206
17
1_555
E
SER
222
A
SER
207
17
1_555
E
PHE
223
A
PHE
208
17
1_555
E
VAL
224
A
VAL
209
17
1_555
E
ARG
226
A
ARG
211
17
1_555
E
ACY
300
D
ACY
17
1_555
E
HOH
642
E
HOH
17
1_555
E
HOH
651
E
HOH
17
1_555
E
GLU
74
A
GLU
59
6
1_555
E
ASN
76
A
ASN
61
6
1_555
E
GLN
79
A
GLN
64
6
1_555
E
ASN
81
A
ASN
66
6
1_555
E
GLU
84
A
GLU
69
6
1_555
E
HOH
327
E
HOH
6
1_555
E
THR
44
A
THR
29
7
1_555
E
HIS
60
A
HIS
45
7
1_555
E
GLN
200
A
GLN
185
7
1_555
E
GLY
201
A
GLY
186
7
1_555
E
SER
203
A
SER
188
7
1_555
E
0Z0
256
B
0Z0
7
1_555
E
HOH
647
E
HOH
7
1_555
19
P 21 21 21