Services
Research
Training
Industry
About us
Protein Data Bank
in Europe
Bringing Structure to Biology
Chemical Components in the PDB
pdbe.org/chem
Feedback
Share
Summary
Atoms
Bonds
In PDB Entries
Names
Descriptors
Complete Listing
Modify Search
Download Links
Molfile:
Ideal
Representative
PDB:
Ideal
Representative
Other:
mmCif
CML
Related compounds
Could not find any related compound in the PDB.
3D-Views
Ideal
Representative
PDB Links
PDB entries
PDBeChem : Chemical Bonds
Molecule :
2KB
Bonds between two atoms of the molecule
Total Number of Bonds: 87
50
10 per page
20 per page
Show all
Record
First Atom
Second Atom
First Element
Second Element
Bond Order Type
Bond Length
Bond Stereochemistry
Is Aromatic
1
C1
C4
C
C
sing
1.54
N
N
2
C1
C2
C
C
sing
1.53
N
N
3
N35
C34
N
C
trip
1.14
N
N
4
C4
C5
C
C
sing
1.51
N
N
5
C2
C3
C
C
sing
1.52
N
N
6
C28
C26
C
C
sing
1.53
N
N
7
C13
C14
C
C
sing
1.53
N
N
8
C13
C12
C
C
sing
1.52
N
N
9
C34
C33
C
C
sing
1.47
N
N
10
C31
O19
C
O
sing
1.43
N
N
11
C31
C32
C
C
sing
1.53
N
N
12
C11
C12
C
C
doub
1.35
Z
N
13
C11
C10
C
C
sing
1.46
N
N
14
O19
C15
O
C
sing
1.43
N
N
15
C20
C5
C
C
sing
1.53
N
N
16
C14
O30
C
O
sing
1.43
N
N
17
C14
C15
C
C
sing
1.53
N
N
18
C5
C6
C
C
sing
1.56
N
N
19
C5
C9
C
C
sing
1.52
N
N
20
C12
C17
C
C
sing
1.48
N
N
21
C3
C10
C
C
doub
1.33
E
N
22
C3
C6
C
C
sing
1.5
N
N
23
C33
C32
C
C
sing
1.53
N
N
24
C26
O36
C
O
sing
1.43
N
N
25
C26
C25
C
C
sing
1.53
N
N
26
C26
C27
C
C
sing
1.53
N
N
27
C24
C25
C
C
sing
1.53
N
N
28
C24
C23
C
C
sing
1.53
N
N
29
C21
C9
C
C
sing
1.53
N
N
30
C21
C23
C
C
sing
1.53
N
N
31
C21
C22
C
C
sing
1.53
N
N
32
C6
C7
C
C
sing
1.53
N
N
33
C15
C16
C
C
sing
1.53
N
N
34
C9
C8
C
C
sing
1.55
N
N
35
C17
C29
C
C
doub
1.33
N
N
36
C17
C16
C
C
sing
1.52
N
N
37
C16
O18
C
O
sing
1.43
N
N
38
C7
C8
C
C
sing
1.55
N
N
39
C4
H1
C
H
sing
1.09
N
N
40
C4
H2
C
H
sing
1.09
N
N
41
C6
H3
C
H
sing
1.09
N
N
42
C7
H4
C
H
sing
1.09
N
N
43
C7
H5
C
H
sing
1.09
N
N
44
C8
H6
C
H
sing
1.09
N
N
45
C8
H7
C
H
sing
1.09
N
N
46
C10
H8
C
H
sing
1.08
N
N
47
C13
H9
C
H
sing
1.09
N
N
48
C13
H10
C
H
sing
1.09
N
N
49
C15
H11
C
H
sing
1.09
N
N
50
C20
H12
C
H
sing
1.09
N
N
51
C20
H13
C
H
sing
1.09
N
N
52
C20
H14
C
H
sing
1.09
N
N
53
C21
H15
C
H
sing
1.09
N
N
54
C22
H16
C
H
sing
1.09
N
N
55
C22
H17
C
H
sing
1.09
N
N
56
C22
H18
C
H
sing
1.09
N
N
57
C24
H19
C
H
sing
1.09
N
N
58
C24
H20
C
H
sing
1.09
N
N
59
C28
H21
C
H
sing
1.09
N
N
60
C28
H22
C
H
sing
1.09
N
N
61
C28
H23
C
H
sing
1.09
N
N
62
C33
H24
C
H
sing
1.09
N
N
63
C33
H25
C
H
sing
1.09
N
N
64
C32
H26
C
H
sing
1.09
N
N
65
C32
H27
C
H
sing
1.09
N
N
66
C31
H28
C
H
sing
1.09
N
N
67
C31
H29
C
H
sing
1.09
N
N
68
C14
H30
C
H
sing
1.09
N
N
69
O30
H31
O
H
sing
0.97
N
N
70
C16
H32
C
H
sing
1.09
N
N
71
O18
H33
O
H
sing
0.97
N
N
72
C29
H34
C
H
sing
1.08
N
N
73
C29
H35
C
H
sing
1.08
N
N
74
C11
H36
C
H
sing
1.08
N
N
75
C2
H37
C
H
sing
1.09
N
N
76
C2
H38
C
H
sing
1.09
N
N
77
C9
H39
C
H
sing
1.09
N
N
78
C1
H40
C
H
sing
1.09
N
N
79
C1
H41
C
H
sing
1.09
N
N
80
C23
H42
C
H
sing
1.09
N
N
81
C23
H43
C
H
sing
1.09
N
N
82
C25
H44
C
H
sing
1.09
N
N
83
C25
H45
C
H
sing
1.09
N
N
84
O36
H46
O
H
sing
0.97
N
N
85
C27
H47
C
H
sing
1.09
N
N
86
C27
H48
C
H
sing
1.09
N
N
87
C27
H49
C
H
sing
1.09
N
N