1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
Korolokova, Y.V.
Bocharov, E.V.
Angelo, K.
Maslennikov, I.V.
Grinenko, O.V.
Lipkin, A.V.
Nosireva, E.D.
Pluzhnikov, K.A.
Olesen, S.-P.
Arseniev, A.S.
Grishin, E.V.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
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
C9 H11 N O3
181.189
y
TYROSINE
L-peptide linking
C5 H11 N O2
117.146
y
VALINE
L-peptide linking
N
1
N
N
N
2
S
C
N
3
N
C
N
4
N
O
N
5
N
C
N
6
N
C
N
7
N
C
N
8
N
N
N
9
N
C
N
10
N
N
N
11
N
N
N
12
N
O
N
13
N
H
N
14
N
H
N
15
N
H
N
16
N
H
N
17
N
H
N
18
N
H
N
19
N
H
N
20
N
H
N
21
N
H
N
22
N
H
N
23
N
H
N
24
N
H
N
25
N
H
N
26
N
H
N
27
N
H
N
28
N
N
N
29
S
C
N
30
N
C
N
31
N
O
N
32
N
C
N
33
N
C
N
34
N
O
N
35
N
N
N
36
N
O
N
37
N
H
N
38
N
H
N
39
N
H
N
40
N
H
N
41
N
H
N
42
N
H
N
43
N
H
N
44
N
H
N
45
N
N
N
46
S
C
N
47
N
C
N
48
N
O
N
49
N
C
N
50
N
C
N
51
N
O
N
52
N
O
N
53
N
O
N
54
N
H
N
55
N
H
N
56
N
H
N
57
N
H
N
58
N
H
N
59
N
H
N
60
N
H
N
61
N
N
N
62
R
C
N
63
N
C
N
64
N
O
N
65
N
C
N
66
N
S
N
67
N
O
N
68
N
H
N
69
N
H
N
70
N
H
N
71
N
H
N
72
N
H
N
73
N
H
N
74
N
H
N
75
N
N
N
76
S
C
N
77
N
C
N
78
N
O
N
79
N
C
N
80
N
C
N
81
N
C
N
82
N
O
N
83
N
N
N
84
N
O
N
85
N
H
N
86
N
H
N
87
N
H
N
88
N
H
N
89
N
H
N
90
N
H
N
91
N
H
N
92
N
H
N
93
N
H
N
94
N
H
N
95
N
N
N
96
S
C
N
97
N
C
N
98
N
O
N
99
N
C
N
100
N
C
N
101
N
C
N
102
N
O
N
103
N
O
N
104
N
O
N
105
N
H
N
106
N
H
N
107
N
H
N
108
N
H
N
109
N
H
N
110
N
H
N
111
N
H
N
112
N
H
N
113
N
H
N
114
N
N
N
115
N
C
N
116
N
C
N
117
N
O
N
118
N
O
N
119
N
H
N
120
N
H
N
121
N
H
N
122
N
H
N
123
N
H
N
124
N
N
N
125
S
C
N
126
N
C
N
127
N
O
N
128
S
C
N
129
N
C
N
130
N
C
N
131
N
C
N
132
N
O
N
133
N
H
N
134
N
H
N
135
N
H
N
136
N
H
N
137
N
H
N
138
N
H
N
139
N
H
N
140
N
H
N
141
N
H
N
142
N
H
N
143
N
H
N
144
N
H
N
145
N
H
N
146
N
N
N
147
S
C
N
148
N
C
N
149
N
O
N
150
N
C
N
151
N
C
N
152
N
C
N
153
N
C
N
154
N
N
N
155
N
O
N
156
N
H
N
157
N
H
N
158
N
H
N
159
N
H
N
160
N
H
N
161
N
H
N
162
N
H
N
163
N
H
N
164
N
H
N
165
N
H
N
166
N
H
N
167
N
H
N
168
N
H
N
169
N
H
N
170
N
H
N
171
N
N
N
172
S
C
N
173
N
C
N
174
N
O
N
175
N
C
Y
176
N
C
Y
177
N
C
Y
178
N
C
Y
179
N
C
Y
180
N
C
Y
181
N
C
N
182
N
O
N
183
N
H
N
184
N
H
N
185
N
H
N
186
N
H
N
187
N
H
N
188
N
H
N
189
N
H
N
190
N
H
N
191
N
H
N
192
N
H
N
193
N
H
N
194
N
N
N
195
S
C
N
196
N
C
N
197
N
O
N
198
N
C
N
199
N
C
N
200
N
C
N
201
N
O
N
202
N
H
N
203
N
H
N
204
N
H
N
205
N
H
N
206
N
H
N
207
N
H
N
208
N
H
N
209
N
H
N
210
N
H
N
211
N
N
N
212
S
C
N
213
N
C
N
214
N
O
N
215
N
C
N
216
N
O
N
217
N
O
N
218
N
H
N
219
N
H
N
220
N
H
N
221
N
H
N
222
N
H
N
223
N
H
N
224
N
H
N
225
N
N
N
226
S
C
N
227
N
C
N
228
N
O
N
229
R
C
N
230
N
O
N
231
N
C
N
232
N
O
N
233
N
H
N
234
N
H
N
235
N
H
N
236
N
H
N
237
N
H
N
238
N
H
N
239
N
H
N
240
N
H
N
241
N
H
N
242
N
N
N
243
S
C
N
244
N
C
N
245
N
O
N
246
N
C
Y
247
N
C
Y
248
N
C
Y
249
N
C
Y
250
N
C
Y
251
N
C
Y
252
N
C
N
253
N
O
N
254
N
O
N
255
N
H
N
256
N
H
N
257
N
H
N
258
N
H
N
259
N
H
N
260
N
H
N
261
N
H
N
262
N
H
N
263
N
H
N
264
N
H
N
265
N
H
N
266
N
N
N
267
S
C
N
268
N
C
N
269
N
O
N
270
N
C
N
271
N
C
N
272
N
C
N
273
N
O
N
274
N
H
N
275
N
H
N
276
N
H
N
277
N
H
N
278
N
H
N
279
N
H
N
280
N
H
N
281
N
H
N
282
N
H
N
283
N
H
N
284
N
H
N
1
N
sing
N
2
N
sing
N
3
N
sing
N
4
N
sing
N
5
N
sing
N
6
N
sing
N
7
N
doub
N
8
N
sing
N
9
N
sing
N
10
N
sing
N
11
N
sing
N
12
N
sing
N
13
N
sing
N
14
N
sing
N
15
N
sing
N
16
N
sing
N
17
N
sing
N
18
N
sing
N
19
N
sing
N
20
N
sing
N
21
N
doub
N
22
N
sing
N
23
N
sing
N
24
N
sing
N
25
N
sing
N
26
N
sing
N
27
N
sing
N
28
N
sing
N
29
N
sing
N
30
N
sing
N
31
N
sing
N
32
N
sing
N
33
N
doub
N
34
N
sing
N
35
N
sing
N
36
N
sing
N
37
N
sing
N
38
N
doub
N
39
N
sing
N
40
N
sing
N
41
N
sing
N
42
N
sing
N
43
N
sing
N
44
N
sing
N
45
N
sing
N
46
N
sing
N
47
N
sing
N
48
N
sing
N
49
N
doub
N
50
N
sing
N
51
N
sing
N
52
N
sing
N
53
N
sing
N
54
N
doub
N
55
N
sing
N
56
N
sing
N
57
N
sing
N
58
N
sing
N
59
N
sing
N
60
N
sing
N
61
N
sing
N
62
N
sing
N
63
N
sing
N
64
N
doub
N
65
N
sing
N
66
N
sing
N
67
N
sing
N
68
N
sing
N
69
N
sing
N
70
N
sing
N
71
N
sing
N
72
N
sing
N
73
N
sing
N
74
N
sing
N
75
N
sing
N
76
N
sing
N
77
N
doub
N
78
N
sing
N
79
N
sing
N
80
N
sing
N
81
N
sing
N
82
N
sing
N
83
N
sing
N
84
N
sing
N
85
N
doub
N
86
N
sing
N
87
N
sing
N
88
N
sing
N
89
N
sing
N
90
N
sing
N
91
N
sing
N
92
N
sing
N
93
N
sing
N
94
N
sing
N
95
N
sing
N
96
N
doub
N
97
N
sing
N
98
N
sing
N
99
N
sing
N
100
N
sing
N
101
N
sing
N
102
N
sing
N
103
N
sing
N
104
N
doub
N
105
N
sing
N
106
N
sing
N
107
N
sing
N
108
N
sing
N
109
N
sing
N
110
N
sing
N
111
N
sing
N
112
N
sing
N
113
N
sing
N
114
N
doub
N
115
N
sing
N
116
N
sing
N
117
N
sing
N
118
N
sing
N
119
N
sing
N
120
N
sing
N
121
N
sing
N
122
N
sing
N
123
N
doub
N
124
N
sing
N
125
N
sing
N
126
N
sing
N
127
N
sing
N
128
N
sing
N
129
N
sing
N
130
N
sing
N
131
N
sing
N
132
N
sing
N
133
N
sing
N
134
N
sing
N
135
N
sing
N
136
N
sing
N
137
N
sing
N
138
N
sing
N
139
N
sing
N
140
N
sing
N
141
N
sing
N
142
N
sing
N
143
N
sing
N
144
N
doub
N
145
N
sing
N
146
N
sing
N
147
N
sing
N
148
N
sing
N
149
N
sing
N
150
N
sing
N
151
N
sing
N
152
N
sing
N
153
N
sing
N
154
N
sing
N
155
N
sing
N
156
N
sing
N
157
N
sing
N
158
N
sing
N
159
N
sing
N
160
N
sing
N
161
N
sing
N
162
N
sing
N
163
N
sing
N
164
N
sing
N
165
N
sing
N
166
N
sing
N
167
N
sing
N
168
N
doub
N
169
N
sing
N
170
N
sing
N
171
N
sing
N
172
N
sing
Y
173
N
doub
Y
174
N
sing
Y
175
N
sing
N
176
N
sing
Y
177
N
doub
N
178
N
sing
Y
179
N
doub
N
180
N
sing
Y
181
N
sing
N
182
N
sing
N
183
N
sing
N
184
N
sing
N
185
N
sing
N
186
N
sing
N
187
N
sing
N
188
N
sing
N
189
N
sing
N
190
N
sing
N
191
N
doub
N
192
N
sing
N
193
N
sing
N
194
N
sing
N
195
N
sing
N
196
N
sing
N
197
N
sing
N
198
N
sing
N
199
N
sing
N
200
N
sing
N
201
N
sing
N
202
N
sing
N
203
N
sing
N
204
N
sing
N
205
N
sing
N
206
N
sing
N
207
N
sing
N
208
N
doub
N
209
N
sing
N
210
N
sing
N
211
N
sing
N
212
N
sing
N
213
N
sing
N
214
N
sing
N
215
N
sing
N
216
N
sing
N
217
N
sing
N
218
N
sing
N
219
N
sing
N
220
N
sing
N
221
N
doub
N
222
N
sing
N
223
N
sing
N
224
N
sing
N
225
N
sing
N
226
N
sing
N
227
N
sing
N
228
N
sing
N
229
N
sing
N
230
N
sing
N
231
N
sing
N
232
N
sing
N
233
N
sing
N
234
N
sing
N
235
N
sing
N
236
N
sing
N
237
N
doub
N
238
N
sing
N
239
N
sing
N
240
N
sing
N
241
N
sing
Y
242
N
doub
Y
243
N
sing
Y
244
N
sing
N
245
N
sing
Y
246
N
doub
N
247
N
sing
Y
248
N
doub
N
249
N
sing
Y
250
N
sing
N
251
N
sing
N
252
N
sing
N
253
N
sing
N
254
N
sing
N
255
N
sing
N
256
N
sing
N
257
N
sing
N
258
N
sing
N
259
N
sing
N
260
N
sing
N
261
N
doub
N
262
N
sing
N
263
N
sing
N
264
N
sing
N
265
N
sing
N
266
N
sing
N
267
N
sing
N
268
N
sing
N
269
N
sing
N
270
N
sing
N
271
N
sing
N
272
N
sing
US
J.Biol.Chem.
JBCHA3
0071
0021-9258
277
43104
43109
10.1074/jbc.M204083200
12151390
New binding site on common molecular scaffold provides HERG channel specificity of scorpion toxin BeKm-1.
2002
US
J.Biol.Chem.
JBCHA3
0071
0021-9258
276
9868
9876
10.1074/jbc.M005973200
An ERG Channel Inhibitor from the Scorpion Buthus eupeus
2001
10.2210/pdb1j5j/pdb
pdb_00001j5j
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
SINGLE WAVELENGTH
M
1
1.0
4103.730
BeKm-1 toxin
1
man
polymer
no
no
RPTDIKCSESYQCFPVCKSRFGKTNGRCVNGFCDCF
RPTDIKCSESYQCFPVCKSRFGKTNGRCVNGFCDCF
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
lesser Asian scorpion
Mesobuthus
Escherichia
sample
34648
Mesobuthus eupeus
562
Escherichia coli
HB101
PLASMID
PEZZ18
database_2
pdbx_struct_assembly
pdbx_struct_oper_list
chem_comp_atom
chem_comp_bond
repository
Initial release
Version format compliance
Version format compliance
Database references
Derived calculations
Data collection
1
0
2002-11-20
1
1
2008-04-26
1
2
2011-07-13
1
3
2022-02-23
1
4
2023-12-27
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
Proton chemical shifts and coupling constants of BeKm-1
PDB-ID 1LGL represents the ensemble.
RCSB
Y
RCSB
2002-04-16
REL
REL
This structure was determined using standard 2D homonuclear techniques.
1
DQF-COSY
2D TOCSY
2D NOESY
DQF-COSY
2D TOCSY
2D NOESY
0
3.5
ambient
303
K
The structures are based on a total of 653 restraints:
326/67 are NOE-derived upper/lower distance constraints,
68/46 backbone/sidechain dihedral angle restraints,
64/64 upper/lower distance restraints from 23 (18 bb-bb, 5 bb-sc) hydrogen bonds,
9/9 upper/lower distance restraints from 3 SS-bonds.
simulated annealing combined with torsion angle dynamics
1 mM BeKm-1, 90% H2O, 10% D2O
90% H2O/10% D2O
1 mM BeKm-1, 99.9% D2O
99.9% D2O
VARIAN
collection
VNMR
5.3b
VARIAN
processing
VNMR
5.3b
Bartels
data analysis
XEASY
1.2.11
Guentert
structure solution
DYANA
1.5
Schaumann
refinement
FANTOM
4
600
Varian
UNITY
ARG
1
n
1
ARG
1
A
PRO
2
n
2
PRO
2
A
THR
3
n
3
THR
3
A
ASP
4
n
4
ASP
4
A
ILE
5
n
5
ILE
5
A
LYS
6
n
6
LYS
6
A
CYS
7
n
7
CYS
7
A
SER
8
n
8
SER
8
A
GLU
9
n
9
GLU
9
A
SER
10
n
10
SER
10
A
TYR
11
n
11
TYR
11
A
GLN
12
n
12
GLN
12
A
CYS
13
n
13
CYS
13
A
PHE
14
n
14
PHE
14
A
PRO
15
n
15
PRO
15
A
VAL
16
n
16
VAL
16
A
CYS
17
n
17
CYS
17
A
LYS
18
n
18
LYS
18
A
SER
19
n
19
SER
19
A
ARG
20
n
20
ARG
20
A
PHE
21
n
21
PHE
21
A
GLY
22
n
22
GLY
22
A
LYS
23
n
23
LYS
23
A
THR
24
n
24
THR
24
A
ASN
25
n
25
ASN
25
A
GLY
26
n
26
GLY
26
A
ARG
27
n
27
ARG
27
A
CYS
28
n
28
CYS
28
A
VAL
29
n
29
VAL
29
A
ASN
30
n
30
ASN
30
A
GLY
31
n
31
GLY
31
A
PHE
32
n
32
PHE
32
A
CYS
33
n
33
CYS
33
A
ASP
34
n
34
ASP
34
A
CYS
35
n
35
CYS
35
A
PHE
36
n
36
PHE
36
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
ILE
5
A
O
ILE
5
A
N
CYS
33
A
N
CYS
33
A
N
PHE
36
A
N
PHE
36
A
O
ASN
25
A
O
ASN
25
Solution structure of HERG-specific scorpion toxin BeKm-1
1
N
N
A
GLU
9
A
GLU
9
HELX_P
A
GLN
12
A
GLN
12
5
1
4
A
CYS
13
A
CYS
13
HELX_P
A
PHE
21
A
PHE
21
1
2
9
disulf
2.158
A
CYS
7
A
SG
CYS
7
1_555
A
CYS
28
A
SG
CYS
28
1_555
disulf
2.174
A
CYS
13
A
SG
CYS
13
1_555
A
CYS
33
A
SG
CYS
33
1_555
disulf
1.954
A
CYS
17
A
SG
CYS
17
1_555
A
CYS
35
A
SG
CYS
35
1_555
TOXIN
ALPHA-BETA MOTIF, CYSTEINE-KNOT MOTIF, TOXIN
SEKM_BUTEU
UNP
1
22
Q9BKB7
RPTDIKCSESYQCFPVCKSRFGKTNGRCVNGFCDCF
22
57
1J5J
1
36
Q9BKB7
A
1
1
36
3
anti-parallel
anti-parallel
A
PRO
2
A
PRO
2
A
LYS
6
A
LYS
6
A
PHE
32
A
PHE
32
A
PHE
36
A
PHE
36
A
ASN
25
A
ASN
25
A
VAL
29
A
VAL
29