0.008017
0.000000
0.000000
0.000000
0.008017
0.000000
0.000000
0.000000
0.013912
0.00000
0.00000
0.00000
CIS PROLINE - PRO 139
CIS PROLINE - PRO 326
White, C.L.
Janakiraman, M.N.
Laver, W.G.
Philippon, C.
Vasella, A.
Air, G.M.
Luo, M.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
8
90.00
90.00
90.00
124.730
124.730
71.880
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
C10 H20 N O9 P
329.241
(1R)-4-acetamido-1,5-anhydro-2,4-dideoxy-1-phosphono-D-glycero-D-galacto-octitol
D-saccharide
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
C8 H15 N O6
221.208
2-acetamido-2-deoxy-beta-D-glucopyranose
D-saccharide, beta 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
245
623
634
10.1006/jmbi.1994.0051
7844831
A sialic acid-derived phosphonate analog inhibits different strains of influenza virus neuraminidase with different efficiencies.
1995
US
Biochemistry
BICHAW
0033
0006-2960
33
8172
Structure of Influenza Virus Neuraminidase B(Slash)Lee(Slash)40 Complexed with Sialic Acid and a Dehydro Analog at 1.8 Angstroms Resolution: Implications for the Catalytic Mechanism
1994
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
221
473
Three-Dimensional Structure of the Influenza Virus A(Slash)Tokyo(Slash)3(Slash)67 at 2.2 Angstroms Resolution
1991
UK
J.Mol.Biol.
JMOBAK
0070
0022-2836
221
487
Refined Atomic Structures of N9 Subtype Influenza Virus Neuraminidase and Escape Mutants
1991
SZ
Helv.Chim.Acta
HCACAV
0010
0018-019X
73
1359
Phosphonic-Acid Analogs of the N-Acetyl-2-Deoxyneuraminic Acids: Synthesis and Inhibition of Vibrio Choleae Sialidase
1990
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
43460.348
INFLUENZA VIRUS B/LEE/40 NEURAMINIDASE
3.2.1.18
1
man
polymer
221.208
2-acetamido-2-deoxy-beta-D-glucopyranose
1
man
non-polymer
40.078
CALCIUM ION
2
syn
non-polymer
329.241
(1R)-4-acetamido-1,5-anhydro-2,4-dideoxy-1-phosphono-D-glycero-D-galacto-octitol
1
syn
non-polymer
18.015
water
117
nat
water
no
no
EPEWTYPRLSCQGSTFQKALLISPHRFGEIKGNSAPLIIREPFVACGPKECRHFALTHYAAQPGGYYNGTRKDRNKLRHL
VSVKLGKIPTVENSIFHMAAWSGSACHDGREWTYIGVDGPDNDALVKIKYGEAYTDTYHSYAHNILRTQESACNCIGGDC
YLMITDGSASGISKCRFLKIREGRIIKEILPTGRVEHTEECTCGFASNKTIECACRDNSYTAKRPFVKLNVETDTAEIRL
MCTKTYLDTPRPDDGSIAGPCESNGDKWLGGIKGGFVHQRMASKIGRWYSRTMSKTNRMGMELYVRYDGDPWTDSDALTL
SGVMVSIEEPGWYSFGFEIKDKKCDVPCIGIEMVHDGGKDTWHSAATAIYCLMGSGQLLWDTVTGVDMAL
EPEWTYPRLSCQGSTFQKALLISPHRFGEIKGNSAPLIIREPFVACGPKECRHFALTHYAAQPGGYYNGTRKDRNKLRHL
VSVKLGKIPTVENSIFHMAAWSGSACHDGREWTYIGVDGPDNDALVKIKYGEAYTDTYHSYAHNILRTQESACNCIGGDC
YLMITDGSASGISKCRFLKIREGRIIKEILPTGRVEHTEECTCGFASNKTIECACRDNSYTAKRPFVKLNVETDTAEIRL
MCTKTYLDTPRPDDGSIAGPCESNGDKWLGGIKGGFVHQRMASKIGRWYSRTMSKTNRMGMELYVRYDGDPWTDSDALTL
SGVMVSIEEPGWYSFGFEIKDKKCDVPCIGIEMVHDGGKDTWHSAATAIYCLMGSGQLLWDTVTGVDMAL
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
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
Influenzavirus B
sample
293
11520
Influenza B virus
293
3.22
61.74
NATIVE CRYSTALS SOAKED IN 10MM EPANA SOLUTION, PH 7.4.
atom_site
chem_comp
entity
pdbx_chem_comp_identifier
pdbx_database_status
pdbx_entity_nonpoly
pdbx_struct_conn_angle
struct_conn
struct_ref_seq_dif
struct_site
struct_site_gen
repository
Initial release
Carbohydrate remediation
repository
Remediation
Version format compliance
Derived calculations
Version format compliance
Atomic model
Atomic model
Data collection
Database references
Derived calculations
Other
Structure summary
1
0
1995-02-07
1
1
2008-03-03
1
2
2011-07-13
1
3
2011-11-16
2
0
2020-07-29
_atom_site.auth_atom_id
_atom_site.label_atom_id
_chem_comp.name
_chem_comp.type
_entity.pdbx_description
_pdbx_database_status.process_site
_pdbx_entity_nonpoly.name
_pdbx_struct_conn_angle.ptnr1_auth_comp_id
_pdbx_struct_conn_angle.ptnr1_auth_seq_id
_pdbx_struct_conn_angle.ptnr1_label_asym_id
_pdbx_struct_conn_angle.ptnr1_label_atom_id
_pdbx_struct_conn_angle.ptnr1_label_comp_id
_pdbx_struct_conn_angle.ptnr1_label_seq_id
_pdbx_struct_conn_angle.ptnr1_symmetry
_pdbx_struct_conn_angle.ptnr2_auth_seq_id
_pdbx_struct_conn_angle.ptnr2_label_asym_id
_pdbx_struct_conn_angle.ptnr3_auth_comp_id
_pdbx_struct_conn_angle.ptnr3_auth_seq_id
_pdbx_struct_conn_angle.ptnr3_label_asym_id
_pdbx_struct_conn_angle.ptnr3_label_atom_id
_pdbx_struct_conn_angle.ptnr3_label_comp_id
_pdbx_struct_conn_angle.ptnr3_label_seq_id
_pdbx_struct_conn_angle.ptnr3_symmetry
_pdbx_struct_conn_angle.value
_struct_conn.pdbx_dist_value
_struct_conn.pdbx_leaving_atom_flag
_struct_conn.pdbx_role
_struct_conn.ptnr1_auth_comp_id
_struct_conn.ptnr1_auth_seq_id
_struct_conn.ptnr1_label_asym_id
_struct_conn.ptnr1_label_atom_id
_struct_conn.ptnr1_label_comp_id
_struct_conn.ptnr1_label_seq_id
_struct_conn.ptnr1_symmetry
_struct_conn.ptnr2_auth_comp_id
_struct_conn.ptnr2_auth_seq_id
_struct_conn.ptnr2_label_asym_id
_struct_conn.ptnr2_label_atom_id
_struct_conn.ptnr2_label_comp_id
_struct_conn.ptnr2_label_seq_id
_struct_conn.ptnr2_symmetry
_struct_ref_seq_dif.details
DGlcpNAcb
N-acetyl-b-D-glucopyranosamine
b-D-GlcpNAc
GlcNAc
Y
BNL
1994-09-26
REL
REL
NAG
2-acetamido-2-deoxy-beta-D-glucopyranose
CA
CALCIUM ION
EQP
(1R)-4-acetamido-1,5-anhydro-2,4-dideoxy-1-phosphono-D-glycero-D-galacto-octitol
HOH
water
TWO CALCIUMS ATOMS ARE INCLUDED IN THE REFINED STRUCTURE.
RESIDUE CA 467 STABILIZES A LOOP NEAR THE NEURAMINIDASE
ACTIVE SITE, WHILE CA 468 IS LOCATED ON THE
CRYSTALLOGRAPHIC NEURAMINIDASE TETRAMER FOUR-FOLD AXIS.
THE EQUATORIAL PHOSPHONATE INHIBITOR IS RESIDUE EQP 500.
EQP IS AN EQUATORIAL PHOSPHONATE ANALOG OF O-SIALIC ACID.
EPANA
SEE WALLIMAN & VASELLA (1990) FOR SYNTHESIS.
NAG
284
2
NAG
A
NAG
467
A
CA
467
3
CA
CA
468
A
CA
468
3
CA
CA
469
A
EQP
500
4
EQP
EQP
500
A
HOH
501
5
HOH
HOH
501
A
HOH
502
5
HOH
HOH
502
A
HOH
503
5
HOH
HOH
503
A
HOH
504
5
HOH
HOH
504
A
HOH
505
5
HOH
HOH
505
A
HOH
506
5
HOH
HOH
506
A
HOH
507
5
HOH
HOH
507
A
HOH
508
5
HOH
HOH
508
A
HOH
509
5
HOH
HOH
509
A
HOH
510
5
HOH
HOH
510
A
HOH
511
5
HOH
HOH
511
A
HOH
512
5
HOH
HOH
512
A
HOH
513
5
HOH
HOH
513
A
HOH
514
5
HOH
HOH
514
A
HOH
515
5
HOH
HOH
515
A
HOH
516
5
HOH
HOH
516
A
HOH
517
5
HOH
HOH
517
A
HOH
518
5
HOH
HOH
518
A
HOH
519
5
HOH
HOH
519
A
HOH
520
5
HOH
HOH
520
A
HOH
521
5
HOH
HOH
521
A
HOH
522
5
HOH
HOH
522
A
HOH
523
5
HOH
HOH
523
A
HOH
524
5
HOH
HOH
524
A
HOH
525
5
HOH
HOH
525
A
HOH
526
5
HOH
HOH
526
A
HOH
527
5
HOH
HOH
527
A
HOH
528
5
HOH
HOH
528
A
HOH
529
5
HOH
HOH
529
A
HOH
530
5
HOH
HOH
530
A
HOH
531
5
HOH
HOH
531
A
HOH
532
5
HOH
HOH
532
A
HOH
533
5
HOH
HOH
533
A
HOH
534
5
HOH
HOH
534
A
HOH
535
5
HOH
HOH
535
A
HOH
536
5
HOH
HOH
536
A
HOH
537
5
HOH
HOH
537
A
HOH
538
5
HOH
HOH
538
A
HOH
539
5
HOH
HOH
539
A
HOH
540
5
HOH
HOH
540
A
HOH
541
5
HOH
HOH
541
A
HOH
542
5
HOH
HOH
542
A
HOH
543
5
HOH
HOH
543
A
HOH
544
5
HOH
HOH
544
A
HOH
545
5
HOH
HOH
545
A
HOH
546
5
HOH
HOH
546
A
HOH
547
5
HOH
HOH
547
A
HOH
548
5
HOH
HOH
548
A
HOH
549
5
HOH
HOH
549
A
HOH
550
5
HOH
HOH
550
A
HOH
551
5
HOH
HOH
551
A
HOH
552
5
HOH
HOH
552
A
HOH
553
5
HOH
HOH
553
A
HOH
554
5
HOH
HOH
554
A
HOH
555
5
HOH
HOH
555
A
HOH
556
5
HOH
HOH
556
A
HOH
557
5
HOH
HOH
557
A
HOH
558
5
HOH
HOH
558
A
HOH
559
5
HOH
HOH
559
A
HOH
560
5
HOH
HOH
560
A
HOH
561
5
HOH
HOH
561
A
HOH
562
5
HOH
HOH
562
A
HOH
563
5
HOH
HOH
563
A
HOH
564
5
HOH
HOH
564
A
HOH
565
5
HOH
HOH
565
A
HOH
566
5
HOH
HOH
566
A
HOH
567
5
HOH
HOH
567
A
HOH
568
5
HOH
HOH
568
A
HOH
569
5
HOH
HOH
569
A
HOH
570
5
HOH
HOH
570
A
HOH
571
5
HOH
HOH
571
A
HOH
572
5
HOH
HOH
572
A
HOH
573
5
HOH
HOH
573
A
HOH
574
5
HOH
HOH
574
A
HOH
575
5
HOH
HOH
575
A
HOH
576
5
HOH
HOH
576
A
HOH
577
5
HOH
HOH
577
A
HOH
578
5
HOH
HOH
578
A
HOH
579
5
HOH
HOH
579
A
HOH
580
5
HOH
HOH
580
A
HOH
581
5
HOH
HOH
581
A
HOH
582
5
HOH
HOH
582
A
HOH
583
5
HOH
HOH
583
A
HOH
584
5
HOH
HOH
584
A
HOH
585
5
HOH
HOH
585
A
HOH
586
5
HOH
HOH
586
A
HOH
587
5
HOH
HOH
587
A
HOH
588
5
HOH
HOH
588
A
HOH
589
5
HOH
HOH
589
A
HOH
590
5
HOH
HOH
590
A
HOH
591
5
HOH
HOH
591
A
HOH
592
5
HOH
HOH
592
A
HOH
593
5
HOH
HOH
593
A
HOH
594
5
HOH
HOH
594
A
HOH
595
5
HOH
HOH
595
A
HOH
596
5
HOH
HOH
596
A
HOH
597
5
HOH
HOH
597
A
HOH
598
5
HOH
HOH
598
A
HOH
599
5
HOH
HOH
599
A
HOH
600
5
HOH
HOH
600
A
HOH
601
5
HOH
HOH
601
A
HOH
602
5
HOH
HOH
602
A
HOH
603
5
HOH
HOH
603
A
HOH
604
5
HOH
HOH
604
A
HOH
605
5
HOH
HOH
605
A
HOH
606
5
HOH
HOH
606
A
HOH
607
5
HOH
HOH
607
A
HOH
608
5
HOH
HOH
608
A
HOH
609
5
HOH
HOH
609
A
HOH
610
5
HOH
HOH
610
A
HOH
611
5
HOH
HOH
611
A
HOH
612
5
HOH
HOH
612
A
HOH
613
5
HOH
HOH
613
A
HOH
614
5
HOH
HOH
614
A
HOH
615
5
HOH
HOH
615
A
HOH
616
5
HOH
HOH
616
A
HOH
617
5
HOH
HOH
617
A
GLU
77
n
1
GLU
77
A
PRO
78
n
2
PRO
78
A
GLU
79
n
3
GLU
79
A
TRP
80
n
4
TRP
80
A
THR
81
n
5
THR
81
A
TYR
82
n
6
TYR
82
A
PRO
83
n
7
PRO
83
A
ARG
84
n
8
ARG
84
A
LEU
85
n
9
LEU
85
A
SER
86
n
10
SER
86
A
CYS
87
n
11
CYS
87
A
GLN
88
n
12
GLN
88
A
GLY
89
n
13
GLY
89
A
SER
90
n
14
SER
90
A
THR
91
n
15
THR
91
A
PHE
92
n
16
PHE
92
A
GLN
93
n
17
GLN
93
A
LYS
94
n
18
LYS
94
A
ALA
95
n
19
ALA
95
A
LEU
96
n
20
LEU
96
A
LEU
97
n
21
LEU
97
A
ILE
98
n
22
ILE
98
A
SER
99
n
23
SER
99
A
PRO
100
n
24
PRO
100
A
HIS
101
n
25
HIS
101
A
ARG
102
n
26
ARG
102
A
PHE
103
n
27
PHE
103
A
GLY
104
n
28
GLY
104
A
GLU
105
n
29
GLU
105
A
ILE
106
n
30
ILE
106
A
LYS
107
n
31
LYS
107
A
GLY
108
n
32
GLY
108
A
ASN
109
n
33
ASN
109
A
SER
110
n
34
SER
110
A
ALA
111
n
35
ALA
111
A
PRO
112
n
36
PRO
112
A
LEU
113
n
37
LEU
113
A
ILE
114
n
38
ILE
114
A
ILE
115
n
39
ILE
115
A
ARG
116
n
40
ARG
116
A
GLU
117
n
41
GLU
117
A
PRO
118
n
42
PRO
118
A
PHE
119
n
43
PHE
119
A
VAL
120
n
44
VAL
120
A
ALA
121
n
45
ALA
121
A
CYS
122
n
46
CYS
122
A
GLY
123
n
47
GLY
123
A
PRO
124
n
48
PRO
124
A
LYS
125
n
49
LYS
125
A
GLU
126
n
50
GLU
126
A
CYS
127
n
51
CYS
127
A
ARG
128
n
52
ARG
128
A
HIS
129
n
53
HIS
129
A
PHE
130
n
54
PHE
130
A
ALA
131
n
55
ALA
131
A
LEU
132
n
56
LEU
132
A
THR
133
n
57
THR
133
A
HIS
134
n
58
HIS
134
A
TYR
135
n
59
TYR
135
A
ALA
136
n
60
ALA
136
A
ALA
137
n
61
ALA
137
A
GLN
138
n
62
GLN
138
A
PRO
139
n
63
PRO
139
A
GLY
140
n
64
GLY
140
A
GLY
141
n
65
GLY
141
A
TYR
142
n
66
TYR
142
A
TYR
143
n
67
TYR
143
A
ASN
144
n
68
ASN
144
A
GLY
145
n
69
GLY
145
A
THR
146
n
70
THR
146
A
ARG
147
n
71
ARG
147
A
LYS
148
n
72
LYS
148
A
ASP
149
n
73
ASP
149
A
ARG
150
n
74
ARG
150
A
ASN
151
n
75
ASN
151
A
LYS
152
n
76
LYS
152
A
LEU
153
n
77
LEU
153
A
ARG
154
n
78
ARG
154
A
HIS
155
n
79
HIS
155
A
LEU
156
n
80
LEU
156
A
VAL
157
n
81
VAL
157
A
SER
158
n
82
SER
158
A
VAL
159
n
83
VAL
159
A
LYS
160
n
84
LYS
160
A
LEU
161
n
85
LEU
161
A
GLY
162
n
86
GLY
162
A
LYS
163
n
87
LYS
163
A
ILE
164
n
88
ILE
164
A
PRO
165
n
89
PRO
165
A
THR
166
n
90
THR
166
A
VAL
167
n
91
VAL
167
A
GLU
168
n
92
GLU
168
A
ASN
169
n
93
ASN
169
A
SER
170
n
94
SER
170
A
ILE
171
n
95
ILE
171
A
PHE
172
n
96
PHE
172
A
HIS
173
n
97
HIS
173
A
MET
174
n
98
MET
174
A
ALA
175
n
99
ALA
175
A
ALA
176
n
100
ALA
176
A
TRP
177
n
101
TRP
177
A
SER
178
n
102
SER
178
A
GLY
179
n
103
GLY
179
A
SER
180
n
104
SER
180
A
ALA
181
n
105
ALA
181
A
CYS
182
n
106
CYS
182
A
HIS
183
n
107
HIS
183
A
ASP
184
n
108
ASP
184
A
GLY
185
n
109
GLY
185
A
ARG
186
n
110
ARG
186
A
GLU
187
n
111
GLU
187
A
TRP
188
n
112
TRP
188
A
THR
189
n
113
THR
189
A
TYR
190
n
114
TYR
190
A
ILE
191
n
115
ILE
191
A
GLY
192
n
116
GLY
192
A
VAL
193
n
117
VAL
193
A
ASP
194
n
118
ASP
194
A
GLY
195
n
119
GLY
195
A
PRO
196
n
120
PRO
196
A
ASP
197
n
121
ASP
197
A
ASN
198
n
122
ASN
198
A
ASP
199
n
123
ASP
199
A
ALA
200
n
124
ALA
200
A
LEU
201
n
125
LEU
201
A
VAL
202
n
126
VAL
202
A
LYS
203
n
127
LYS
203
A
ILE
204
n
128
ILE
204
A
LYS
205
n
129
LYS
205
A
TYR
206
n
130
TYR
206
A
GLY
207
n
131
GLY
207
A
GLU
208
n
132
GLU
208
A
ALA
209
n
133
ALA
209
A
TYR
210
n
134
TYR
210
A
THR
211
n
135
THR
211
A
ASP
212
n
136
ASP
212
A
THR
213
n
137
THR
213
A
TYR
214
n
138
TYR
214
A
HIS
215
n
139
HIS
215
A
SER
216
n
140
SER
216
A
TYR
217
n
141
TYR
217
A
ALA
218
n
142
ALA
218
A
HIS
219
n
143
HIS
219
A
ASN
220
n
144
ASN
220
A
ILE
221
n
145
ILE
221
A
LEU
222
n
146
LEU
222
A
ARG
223
n
147
ARG
223
A
THR
224
n
148
THR
224
A
GLN
225
n
149
GLN
225
A
GLU
226
n
150
GLU
226
A
SER
227
n
151
SER
227
A
ALA
228
n
152
ALA
228
A
CYS
229
n
153
CYS
229
A
ASN
230
n
154
ASN
230
A
CYS
231
n
155
CYS
231
A
ILE
232
n
156
ILE
232
A
GLY
233
n
157
GLY
233
A
GLY
234
n
158
GLY
234
A
ASP
235
n
159
ASP
235
A
CYS
236
n
160
CYS
236
A
TYR
237
n
161
TYR
237
A
LEU
238
n
162
LEU
238
A
MET
239
n
163
MET
239
A
ILE
240
n
164
ILE
240
A
THR
241
n
165
THR
241
A
ASP
242
n
166
ASP
242
A
GLY
243
n
167
GLY
243
A
SER
244
n
168
SER
244
A
ALA
245
n
169
ALA
245
A
SER
246
n
170
SER
246
A
GLY
247
n
171
GLY
247
A
ILE
248
n
172
ILE
248
A
SER
249
n
173
SER
249
A
LYS
250
n
174
LYS
250
A
CYS
251
n
175
CYS
251
A
ARG
252
n
176
ARG
252
A
PHE
253
n
177
PHE
253
A
LEU
254
n
178
LEU
254
A
LYS
255
n
179
LYS
255
A
ILE
256
n
180
ILE
256
A
ARG
257
n
181
ARG
257
A
GLU
258
n
182
GLU
258
A
GLY
259
n
183
GLY
259
A
ARG
260
n
184
ARG
260
A
ILE
261
n
185
ILE
261
A
ILE
262
n
186
ILE
262
A
LYS
263
n
187
LYS
263
A
GLU
264
n
188
GLU
264
A
ILE
265
n
189
ILE
265
A
LEU
266
n
190
LEU
266
A
PRO
267
n
191
PRO
267
A
THR
268
n
192
THR
268
A
GLY
269
n
193
GLY
269
A
ARG
270
n
194
ARG
270
A
VAL
271
n
195
VAL
271
A
GLU
272
n
196
GLU
272
A
HIS
273
n
197
HIS
273
A
THR
274
n
198
THR
274
A
GLU
275
n
199
GLU
275
A
GLU
276
n
200
GLU
276
A
CYS
277
n
201
CYS
277
A
THR
278
n
202
THR
278
A
CYS
279
n
203
CYS
279
A
GLY
280
n
204
GLY
280
A
PHE
281
n
205
PHE
281
A
ALA
282
n
206
ALA
282
A
SER
283
n
207
SER
283
A
ASN
284
n
208
ASN
284
A
LYS
285
n
209
LYS
285
A
THR
286
n
210
THR
286
A
ILE
287
n
211
ILE
287
A
GLU
288
n
212
GLU
288
A
CYS
289
n
213
CYS
289
A
ALA
290
n
214
ALA
290
A
CYS
291
n
215
CYS
291
A
ARG
292
n
216
ARG
292
A
ASP
293
n
217
ASP
293
A
ASN
294
n
218
ASN
294
A
SER
295
n
219
SER
295
A
TYR
296
n
220
TYR
296
A
THR
297
n
221
THR
297
A
ALA
298
n
222
ALA
298
A
LYS
299
n
223
LYS
299
A
ARG
300
n
224
ARG
300
A
PRO
301
n
225
PRO
301
A
PHE
302
n
226
PHE
302
A
VAL
303
n
227
VAL
303
A
LYS
304
n
228
LYS
304
A
LEU
305
n
229
LEU
305
A
ASN
306
n
230
ASN
306
A
VAL
307
n
231
VAL
307
A
GLU
308
n
232
GLU
308
A
THR
309
n
233
THR
309
A
ASP
310
n
234
ASP
310
A
THR
311
n
235
THR
311
A
ALA
312
n
236
ALA
312
A
GLU
313
n
237
GLU
313
A
ILE
314
n
238
ILE
314
A
ARG
315
n
239
ARG
315
A
LEU
316
n
240
LEU
316
A
MET
317
n
241
MET
317
A
CYS
318
n
242
CYS
318
A
THR
319
n
243
THR
319
A
LYS
320
n
244
LYS
320
A
THR
321
n
245
THR
321
A
TYR
322
n
246
TYR
322
A
LEU
323
n
247
LEU
323
A
ASP
324
n
248
ASP
324
A
THR
325
n
249
THR
325
A
PRO
326
n
250
PRO
326
A
ARG
327
n
251
ARG
327
A
PRO
328
n
252
PRO
328
A
ASP
329
n
253
ASP
329
A
ASP
330
n
254
ASP
330
A
GLY
331
n
255
GLY
331
A
SER
332
n
256
SER
332
A
ILE
333
n
257
ILE
333
A
ALA
334
n
258
ALA
334
A
GLY
335
n
259
GLY
335
A
PRO
336
n
260
PRO
336
A
CYS
337
n
261
CYS
337
A
GLU
338
n
262
GLU
338
A
SER
339
n
263
SER
339
A
ASN
340
n
264
ASN
340
A
GLY
341
n
265
GLY
341
A
ASP
342
n
266
ASP
342
A
LYS
343
n
267
LYS
343
A
TRP
344
n
268
TRP
344
A
LEU
345
n
269
LEU
345
A
GLY
346
n
270
GLY
346
A
GLY
347
n
271
GLY
347
A
ILE
348
n
272
ILE
348
A
LYS
349
n
273
LYS
349
A
GLY
350
n
274
GLY
350
A
GLY
351
n
275
GLY
351
A
PHE
352
n
276
PHE
352
A
VAL
353
n
277
VAL
353
A
HIS
354
n
278
HIS
354
A
GLN
355
n
279
GLN
355
A
ARG
356
n
280
ARG
356
A
MET
357
n
281
MET
357
A
ALA
358
n
282
ALA
358
A
SER
359
n
283
SER
359
A
LYS
360
n
284
LYS
360
A
ILE
361
n
285
ILE
361
A
GLY
362
n
286
GLY
362
A
ARG
363
n
287
ARG
363
A
TRP
364
n
288
TRP
364
A
TYR
365
n
289
TYR
365
A
SER
366
n
290
SER
366
A
ARG
367
n
291
ARG
367
A
THR
368
n
292
THR
368
A
MET
369
n
293
MET
369
A
SER
370
n
294
SER
370
A
LYS
371
n
295
LYS
371
A
THR
372
n
296
THR
372
A
ASN
373
n
297
ASN
373
A
ARG
374
n
298
ARG
374
A
MET
375
n
299
MET
375
A
GLY
376
n
300
GLY
376
A
MET
377
n
301
MET
377
A
GLU
378
n
302
GLU
378
A
LEU
379
n
303
LEU
379
A
TYR
380
n
304
TYR
380
A
VAL
381
n
305
VAL
381
A
ARG
382
n
306
ARG
382
A
TYR
383
n
307
TYR
383
A
ASP
384
n
308
ASP
384
A
GLY
385
n
309
GLY
385
A
ASP
386
n
310
ASP
386
A
PRO
387
n
311
PRO
387
A
TRP
388
n
312
TRP
388
A
THR
389
n
313
THR
389
A
ASP
390
n
314
ASP
390
A
SER
391
n
315
SER
391
A
ASP
392
n
316
ASP
392
A
ALA
393
n
317
ALA
393
A
LEU
394
n
318
LEU
394
A
THR
395
n
319
THR
395
A
LEU
396
n
320
LEU
396
A
SER
397
n
321
SER
397
A
GLY
398
n
322
GLY
398
A
VAL
399
n
323
VAL
399
A
MET
400
n
324
MET
400
A
VAL
401
n
325
VAL
401
A
SER
402
n
326
SER
402
A
ILE
403
n
327
ILE
403
A
GLU
404
n
328
GLU
404
A
GLU
405
n
329
GLU
405
A
PRO
406
n
330
PRO
406
A
GLY
407
n
331
GLY
407
A
TRP
408
n
332
TRP
408
A
TYR
409
n
333
TYR
409
A
SER
410
n
334
SER
410
A
PHE
411
n
335
PHE
411
A
GLY
412
n
336
GLY
412
A
PHE
413
n
337
PHE
413
A
GLU
414
n
338
GLU
414
A
ILE
415
n
339
ILE
415
A
LYS
416
n
340
LYS
416
A
ASP
417
n
341
ASP
417
A
LYS
418
n
342
LYS
418
A
LYS
419
n
343
LYS
419
A
CYS
420
n
344
CYS
420
A
ASP
421
n
345
ASP
421
A
VAL
422
n
346
VAL
422
A
PRO
423
n
347
PRO
423
A
CYS
424
n
348
CYS
424
A
ILE
425
n
349
ILE
425
A
GLY
426
n
350
GLY
426
A
ILE
427
n
351
ILE
427
A
GLU
428
n
352
GLU
428
A
MET
429
n
353
MET
429
A
VAL
430
n
354
VAL
430
A
HIS
431
n
355
HIS
431
A
ASP
432
n
356
ASP
432
A
GLY
433
n
357
GLY
433
A
GLY
434
n
358
GLY
434
A
LYS
435
n
359
LYS
435
A
ASP
436
n
360
ASP
436
A
THR
437
n
361
THR
437
A
TRP
438
n
362
TRP
438
A
HIS
439
n
363
HIS
439
A
SER
440
n
364
SER
440
A
ALA
441
n
365
ALA
441
A
ALA
442
n
366
ALA
442
A
THR
443
n
367
THR
443
A
ALA
444
n
368
ALA
444
A
ILE
445
n
369
ILE
445
A
TYR
446
n
370
TYR
446
A
CYS
447
n
371
CYS
447
A
LEU
448
n
372
LEU
448
A
MET
449
n
373
MET
449
A
GLY
450
n
374
GLY
450
A
SER
451
n
375
SER
451
A
GLY
452
n
376
GLY
452
A
GLN
453
n
377
GLN
453
A
LEU
454
n
378
LEU
454
A
LEU
455
n
379
LEU
455
A
TRP
456
n
380
TRP
456
A
ASP
457
n
381
ASP
457
A
THR
458
n
382
THR
458
A
VAL
459
n
383
VAL
459
A
THR
460
n
384
THR
460
A
GLY
461
n
385
GLY
461
A
VAL
462
n
386
VAL
462
A
ASP
463
n
387
ASP
463
A
MET
464
n
388
MET
464
A
ALA
465
n
389
ALA
465
A
LEU
466
n
390
LEU
466
A
author_and_software_defined_assembly
PISA,PQS
4
tetrameric
19480
-123
45970
A
GLU
168
A
OE1
GLU
92
1_555
A
CA
469
D
CA
CA
1_555
A
GLU
168
A
OE1
GLU
92
3_545
89.8
A
GLU
168
A
OE1
GLU
92
1_555
A
CA
469
D
CA
CA
1_555
A
GLU
168
A
OE1
GLU
92
2_655
175.2
A
GLU
168
A
OE1
GLU
92
3_545
A
CA
469
D
CA
CA
1_555
A
GLU
168
A
OE1
GLU
92
2_655
89.9
A
GLU
168
A
OE1
GLU
92
1_555
A
CA
469
D
CA
CA
1_555
A
GLU
168
A
OE1
GLU
92
4_555
89.9
A
GLU
168
A
OE1
GLU
92
3_545
A
CA
469
D
CA
CA
1_555
A
GLU
168
A
OE1
GLU
92
4_555
175.2
A
GLU
168
A
OE1
GLU
92
2_655
A
CA
469
D
CA
CA
1_555
A
GLU
168
A
OE1
GLU
92
4_555
90.0
A
ASP
293
A
O
ASP
217
1_555
A
CA
468
C
CA
CA
1_555
A
THR
297
A
O
THR
221
1_555
91.1
A
ASP
293
A
O
ASP
217
1_555
A
CA
468
C
CA
CA
1_555
A
ASP
324
A
OD2
ASP
248
1_555
89.9
A
THR
297
A
O
THR
221
1_555
A
CA
468
C
CA
CA
1_555
A
ASP
324
A
OD2
ASP
248
1_555
102.4
A
ASP
293
A
O
ASP
217
1_555
A
CA
468
C
CA
CA
1_555
A
GLY
346
A
O
GLY
270
1_555
98.0
A
THR
297
A
O
THR
221
1_555
A
CA
468
C
CA
CA
1_555
A
GLY
346
A
O
GLY
270
1_555
151.1
A
ASP
324
A
OD2
ASP
248
1_555
A
CA
468
C
CA
CA
1_555
A
GLY
346
A
O
GLY
270
1_555
105.0
A
ASP
293
A
O
ASP
217
1_555
A
CA
468
C
CA
CA
1_555
A
HOH
501
F
O
HOH
1_555
173.9
A
THR
297
A
O
THR
221
1_555
A
CA
468
C
CA
CA
1_555
A
HOH
501
F
O
HOH
1_555
83.5
A
ASP
324
A
OD2
ASP
248
1_555
A
CA
468
C
CA
CA
1_555
A
HOH
501
F
O
HOH
1_555
94.1
A
GLY
346
A
O
GLY
270
1_555
A
CA
468
C
CA
CA
1_555
A
HOH
501
F
O
HOH
1_555
85.5
A
ASP
293
A
O
ASP
217
1_555
A
CA
468
C
CA
CA
1_555
A
HOH
502
F
O
HOH
1_555
81.2
A
THR
297
A
O
THR
221
1_555
A
CA
468
C
CA
CA
1_555
A
HOH
502
F
O
HOH
1_555
79.3
A
ASP
324
A
OD2
ASP
248
1_555
A
CA
468
C
CA
CA
1_555
A
HOH
502
F
O
HOH
1_555
171.0
A
GLY
346
A
O
GLY
270
1_555
A
CA
468
C
CA
CA
1_555
A
HOH
502
F
O
HOH
1_555
75.2
A
HOH
501
F
O
HOH
1_555
A
CA
468
C
CA
CA
1_555
A
HOH
502
F
O
HOH
1_555
94.9
A
ASN
284
GLYCOSYLATION SITE
A
ASN
208
ASN
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
-1.0000000000
0.0000000000
0.0000000000
0.0000000000
-1.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
2_655
-x+1,-y,z
crystal symmetry operation
124.7300000000
0.0000000000
0.0000000000
0.0000000000
-1.0000000000
0.0000000000
1.0000000000
0.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
3_545
-y+1/2,x-1/2,z
crystal symmetry operation
62.3650000000
-62.3650000000
0.0000000000
0.0000000000
1.0000000000
0.0000000000
-1.0000000000
0.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
4_555
y+1/2,-x+1/2,z
crystal symmetry operation
62.3650000000
62.3650000000
0.0000000000
A
N
ILE
98
A
N
ILE
22
A
O
THR
443
A
O
THR
367
A
N
LEU
448
A
N
LEU
372
A
O
PRO
423
A
O
PRO
347
A
N
GLY
426
A
N
GLY
350
A
O
PHE
411
A
O
PHE
335
A
O
ALA
121
A
O
ALA
45
A
N
ARG
128
A
N
ARG
52
A
N
THR
133
A
N
THR
57
A
O
HIS
155
A
O
HIS
79
A
O
SER
158
A
O
SER
82
A
N
ILE
171
A
N
ILE
95
A
O
CYS
182
A
O
CYS
106
A
N
THR
189
A
N
THR
113
A
O
ASP
194
A
O
ASP
118
A
N
LEU
201
A
N
LEU
125
A
N
TYR
206
A
N
TYR
130
A
O
ALA
209
A
O
ALA
133
A
N
ILE
265
A
N
ILE
189
A
O
PHE
253
A
O
PHE
177
A
O
ILE
256
A
O
ILE
180
A
N
CYS
236
A
N
CYS
160
A
O
THR
241
A
O
THR
165
A
N
ARG
223
A
N
ARG
147
A
N
ILE
265
A
N
ILE
189
A
O
PHE
253
A
O
PHE
177
A
O
ILE
256
A
O
ILE
180
A
N
CYS
236
A
N
CYS
160
A
N
TYR
237
A
N
TYR
161
A
O
ASN
230
A
O
ASN
154
A
N
THR
268
A
N
THR
192
A
O
ALA
312
A
O
ALA
236
A
O
ARG
315
A
O
ARG
239
A
N
PHE
302
A
N
PHE
226
A
N
LEU
305
A
N
LEU
229
A
O
ILE
287
A
O
ILE
211
A
N
ARG
292
A
N
ARG
216
A
O
GLU
275
A
O
GLU
199
A
O
GLN
355
A
O
GLN
279
A
N
GLY
362
A
N
GLY
286
A
O
ARG
367
A
O
ARG
291
A
N
GLU
378
A
N
GLU
302
A
O
VAL
381
A
O
VAL
305
A
N
THR
395
A
N
THR
319
1
A
CA
469
D
CA
1
A
A
HH22
HOP3
ARG
EQP
374
500
0.81
1
A
A
HG
HE2
SER
HIS
158
173
0.99
1
A
A
H1
H1
HOH
HOH
595
596
1.06
1
A
A
H
H2
SER
HOH
110
509
1.10
1
A
A
HD21
H2
ASN
HOH
230
559
1.14
1
A
A
H
H2
PHE
HOH
281
575
1.15
1
A
A
H
H2
GLY
HOH
145
606
1.15
1
A
A
H
H1
GLY
HOH
350
585
1.16
1
A
A
H
H2
ASN
HOH
198
543
1.17
1
A
A
HG1
H2
THR
HOH
443
611
1.18
1
A
A
H
H2
ALA
HOH
312
569
1.19
1
A
A
HE2
HG
HIS
SER
101
440
1.20
1
A
A
HG1
HG1
THR
THR
309
311
1.22
1
A
A
H
H2
LYS
HOH
94
613
1.24
1
A
A
HE21
H
GLN
LEU
93
455
1.27
1
A
A
HD1
H2
HIS
HOH
173
536
1.27
1
A
A
H
H1
HIS
HOH
101
603
1.28
1
A
A
HG1
H
THR
ASN
166
169
1.28
1
A
A
HH
H
TYR
ILE
322
333
1.31
1
A
A
HH
H1
TYR
HOH
210
549
1.32
1
A
A
HH11
HD21
ARG
ASN
270
340
1.33
1
A
A
HZ2
H1
LYS
HOH
263
565
1.35
1
A
A
O
H1
GLY
HOH
412
573
1.49
1
A
A
O
H1
ASP
HOH
384
592
1.53
1
A
A
NH2
HOP3
ARG
EQP
374
500
1.56
1
A
A
HH22
O3P
ARG
EQP
116
500
1.59
1
6.82
1.10
114.20
121.02
A
A
A
CA
CB
SG
CYS
CYS
CYS
229
229
229
N
1
A
A
HH
H
TYR
ASP
142
463
1.12
1_555
4_555
1
A
A
H
H2
ALA
HOH
137
508
1.16
1_555
4_555
1
A
A
H
H2
GLN
HOH
453
551
1.23
1_555
3_545
1
A
A
H
HE2
LEU
HIS
97
155
1.35
1_555
3_545
1
A
GLU
126
173.79
145.05
1
A
ARG
186
-130.58
-32.95
1
A
ASP
199
-164.55
57.70
1
A
ILE
221
51.00
71.08
1
A
THR
224
-127.57
-154.48
1
A
SER
283
-173.28
-174.86
1
A
ARG
382
-161.74
117.38
1
A
ASP
384
53.57
-155.65
1
A
TRP
408
-103.01
-125.05
13.13
0.154
0.154
2.4
8.0
16341
1
2.0
0.22
2.4
8.0
117
3194
37
0
3040
0.012
1.77
26.88
1.45
1INV
17019
2.0
1
72.3
model building
X-PLOR
refinement
X-PLOR
phasing
X-PLOR
INFLUENZA B/LEE/40 NEURAMINIDASE (SIALIDASE) (E.C.3.2.1.18) COMPLEXED WITH EPANA INHIBITOR (4-ACETAMIDO-2,4-DIDEOXY-D-GLYCERO-ALPHA-D-GALACTO-1-OCTOPYRANOSYL) PHOSPHONIC ACID
A SIALIC ACID DERIVED PHOSPHONATE ANALOG INHIBITS DIFFERENT STRAINS OF INFLUENZA VIRUS NEURAMINIDASE WITH DIFFERENT EFFICIENCIES
1
N
N
2
N
N
3
N
N
3
N
N
4
N
N
5
N
N
A
SER
99
A
SER
23
HELX_P
A
GLY
104
A
GLY
28
5
1
6
A
PRO
196
A
PRO
120
HELX_P
A
ASP
199
A
ASP
123
5
2
4
disulf
2.014
A
CYS
87
A
SG
CYS
11
1_555
A
CYS
420
A
SG
CYS
344
1_555
disulf
2.025
A
CYS
122
A
SG
CYS
46
1_555
A
CYS
127
A
SG
CYS
51
1_555
disulf
2.017
A
CYS
182
A
SG
CYS
106
1_555
A
CYS
229
A
SG
CYS
153
1_555
disulf
2.029
A
CYS
231
A
SG
CYS
155
1_555
A
CYS
236
A
SG
CYS
160
1_555
disulf
2.020
A
CYS
277
A
SG
CYS
201
1_555
A
CYS
291
A
SG
CYS
215
1_555
disulf
2.022
A
CYS
279
A
SG
CYS
203
1_555
A
CYS
289
A
SG
CYS
213
1_555
disulf
2.020
A
CYS
318
A
SG
CYS
242
1_555
A
CYS
337
A
SG
CYS
261
1_555
disulf
2.024
A
CYS
424
A
SG
CYS
348
1_555
A
CYS
447
A
SG
CYS
371
1_555
covale
1.440
one
A
N-Glycosylation
A
ASN
284
A
ND2
ASN
208
1_555
A
NAG
467
B
C1
NAG
1_555
metalc
2.264
A
GLU
168
A
OE1
GLU
92
1_555
A
CA
469
D
CA
CA
1_555
metalc
2.263
A
GLU
168
A
OE1
GLU
92
3_545
A
CA
469
D
CA
CA
1_555
metalc
2.260
A
GLU
168
A
OE1
GLU
92
2_655
A
CA
469
D
CA
CA
1_555
metalc
2.261
A
GLU
168
A
OE1
GLU
92
4_555
A
CA
469
D
CA
CA
1_555
metalc
2.476
A
ASP
293
A
O
ASP
217
1_555
A
CA
468
C
CA
CA
1_555
metalc
2.535
A
THR
297
A
O
THR
221
1_555
A
CA
468
C
CA
CA
1_555
metalc
2.262
A
ASP
324
A
OD2
ASP
248
1_555
A
CA
468
C
CA
CA
1_555
metalc
2.400
A
GLY
346
A
O
GLY
270
1_555
A
CA
468
C
CA
CA
1_555
metalc
2.547
A
CA
468
C
CA
CA
1_555
A
HOH
501
F
O
HOH
1_555
metalc
2.476
A
CA
468
C
CA
CA
1_555
A
HOH
502
F
O
HOH
1_555
HYDROLASE
HYDROLASE, O-GLYCOSYL, NEURAMINIDASE, SIALIDASE
A
GLN
138
A
GLN
62
1
A
PRO
139
A
PRO
63
0.39
A
THR
325
A
THR
249
1
A
PRO
326
A
PRO
250
-0.57
NRAM_INBLE
UNP
1
1
P03474
MLPSTVQTLTLLLTSGGVLLSLYVSASLSYLLYSDVLLKFSSTKTTAPTMSLECTNASNAQTVNHSATKEMTFPPPEPEW
TYPRLSCQGSTFQKALLISPHRFGEIKGNSAPLIIREPFVACGPKECRHFALTHYAAQPGGYYNGTRKDRNKLRHLVSVK
LGKIPTVENSIFHMAAWSGSACHDGREWTYIGVDGPDNDALVKIKYGEAYTDTYHSYAHNILRTQESACNCIGGDCYLMI
TDGSASGISKCRFLKIREGRIIKEILPTGRVEHTEECTCGFASNKTIECACRDNSYTAKRPFVKLNVETDTAEIRLMCTK
TYLDTPRPDDGSIAGPCESNGDKWLGGIKGGFVHQRMASKIGRWYSRTMSKTNRMGMELYVKYDGDPWTDSDALTLSGVM
VSIEEPGWYSFGFEIKDKKCDVPCIGIEMVHDGGKDTWHSAATAIYCLMGSGQLLWDTVTGVDMAL
77
466
1INV
77
466
P03474
A
1
1
390
1
LYS
conflict
ARG
382
1INV
A
P03474
UNP
382
306
4
4
4
4
4
5
4
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
anti-parallel
parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
anti-parallel
A
PHE
92
A
PHE
16
A
ILE
98
A
ILE
22
A
SER
440
A
SER
364
A
LEU
448
A
LEU
372
A
ASP
421
A
ASP
345
A
HIS
431
A
HIS
355
A
SER
410
A
SER
334
A
LYS
416
A
LYS
340
A
LEU
113
A
LEU
37
A
CYS
122
A
CYS
46
A
CYS
127
A
CYS
51
A
ALA
137
A
ALA
61
A
HIS
155
A
HIS
79
A
LYS
160
A
LYS
84
A
ILE
171
A
ILE
95
A
ALA
175
A
ALA
99
A
SER
178
A
SER
102
A
HIS
183
A
HIS
107
A
TRP
188
A
TRP
112
A
ASP
194
A
ASP
118
A
LEU
201
A
LEU
125
A
TYR
206
A
TYR
130
A
ALA
209
A
ALA
133
A
HIS
215
A
HIS
139
A
ARG
260
A
ARG
184
A
ILE
265
A
ILE
189
A
SER
249
A
SER
173
A
ARG
257
A
ARG
181
A
ASP
235
A
ASP
159
A
GLY
243
A
GLY
167
A
ARG
223
A
ARG
147
A
THR
224
A
THR
148
A
ARG
260
A
ARG
184
A
ILE
265
A
ILE
189
A
SER
249
A
SER
173
A
ARG
257
A
ARG
181
A
ASP
235
A
ASP
159
A
GLY
243
A
GLY
167
A
ASN
230
A
ASN
154
A
ILE
232
A
ILE
156
A
THR
268
A
THR
192
A
GLY
269
A
GLY
193
A
THR
311
A
THR
235
A
LEU
316
A
LEU
240
A
PRO
301
A
PRO
225
A
ASN
306
A
ASN
230
A
THR
286
A
THR
210
A
ARG
292
A
ARG
216
A
GLU
275
A
GLU
199
A
PHE
281
A
PHE
205
A
PHE
352
A
PHE
276
A
ARG
356
A
ARG
280
A
ILE
361
A
ILE
285
A
ARG
367
A
ARG
291
A
MET
375
A
MET
299
A
TYR
383
A
TYR
307
A
THR
395
A
THR
319
A
PRO
406
A
PRO
330
SUBSTRATE (SIALIC ACID) BINDING RESIDUES IN CATALYTIC SITE
Author
11
A
ARG
116
A
ARG
40
11
1_555
A
GLU
117
A
GLU
41
11
1_555
A
ASP
149
A
ASP
73
11
1_555
A
ARG
150
A
ARG
74
11
1_555
A
TRP
177
A
TRP
101
11
1_555
A
ILE
221
A
ILE
145
11
1_555
A
ARG
223
A
ARG
147
11
1_555
A
GLU
275
A
GLU
199
11
1_555
A
ARG
292
A
ARG
216
11
1_555
A
ARG
374
A
ARG
298
11
1_555
A
TYR
409
A
TYR
333
11
1_555
90
P 4 21 2