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 :
A1APA
Bonds between two atoms of the molecule
Total Number of Bonds: 111
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
C33
C34
C
C
doub
1.38
N
Y
2
C33
C32
C
C
sing
1.38
N
Y
3
C34
C35
C
C
sing
1.38
N
Y
4
C32
C31
C
C
doub
1.38
N
Y
5
C35
C30
C
C
doub
1.38
N
Y
6
C31
C30
C
C
sing
1.38
N
Y
7
C30
C29
C
C
sing
1.51
N
N
8
O38
C37
O
C
doub
1.22
N
N
9
C27
C26
C
C
sing
1.53
N
N
10
C27
C28
C
C
sing
1.53
N
N
11
C37
O39
C
O
sing
1.35
N
N
12
C37
N36
C
N
sing
1.35
N
N
13
C29
C28
C
C
sing
1.53
N
N
14
C26
C25
C
C
sing
1.53
N
N
15
C28
N36
C
N
sing
1.46
N
N
16
O39
C40
O
C
sing
1.45
N
N
17
C40
C41
C
C
sing
1.51
N
N
18
C46
C25
C
C
sing
1.53
N
N
19
C46
C47
C
C
sing
1.51
N
N
20
C25
N24
C
N
sing
1.46
N
N
21
C48
C47
C
C
doub
1.38
N
Y
22
C48
C49
C
C
sing
1.38
N
Y
23
C41
C42
C
C
doub
1.34
N
Y
24
C41
S45
C
S
sing
1.76
N
Y
25
C42
N43
C
N
sing
1.32
N
Y
26
C47
C52
C
C
sing
1.38
N
Y
27
C15
N16
C
N
sing
1.47
N
N
28
C15
C14
C
C
sing
1.53
N
N
29
C49
C50
C
C
doub
1.38
N
Y
30
N24
C22
N
C
sing
1.35
N
N
31
C17
C18
C
C
sing
1.53
N
N
32
C17
N16
C
N
sing
1.47
N
N
33
C18
O19
C
O
sing
1.43
N
N
34
N16
C21
N
C
sing
1.47
N
N
35
C22
C13
C
C
sing
1.51
N
N
36
C22
O23
C
O
doub
1.21
N
N
37
C13
C14
C
C
sing
1.53
N
N
38
C13
N12
C
N
sing
1.47
N
N
39
S45
C44
S
C
sing
1.71
N
Y
40
O11
C10
O
C
doub
1.22
N
N
41
N43
C44
N
C
doub
1.29
N
Y
42
C52
C51
C
C
doub
1.38
N
Y
43
C50
C51
C
C
sing
1.38
N
Y
44
C21
C20
C
C
sing
1.53
N
N
45
O19
C20
O
C
sing
1.43
N
N
46
N12
C10
N
C
sing
1.35
N
N
47
C10
N08
C
N
sing
1.35
N
N
48
N08
C07
N
C
sing
1.47
N
N
49
N08
C09
N
C
sing
1.46
N
N
50
C07
C06
C
C
sing
1.51
N
N
51
C06
N05
C
N
sing
1.32
N
Y
52
C06
C53
C
C
doub
1.34
N
Y
53
N05
C04
N
C
doub
1.29
N
Y
54
C53
S54
C
S
sing
1.76
N
Y
55
C01
C02
C
C
sing
1.53
N
N
56
C04
S54
C
S
sing
1.71
N
Y
57
C04
C02
C
C
sing
1.51
N
N
58
C02
C03
C
C
sing
1.53
N
N
59
C01
H1
C
H
sing
1.09
N
N
60
C01
H2
C
H
sing
1.09
N
N
61
C01
H3
C
H
sing
1.09
N
N
62
C02
H4
C
H
sing
1.09
N
N
63
C03
H5
C
H
sing
1.09
N
N
64
C03
H6
C
H
sing
1.09
N
N
65
C03
H7
C
H
sing
1.09
N
N
66
C07
H8
C
H
sing
1.09
N
N
67
C07
H9
C
H
sing
1.09
N
N
68
C09
H10
C
H
sing
1.09
N
N
69
C09
H11
C
H
sing
1.09
N
N
70
C09
H12
C
H
sing
1.09
N
N
71
C13
H13
C
H
sing
1.09
N
N
72
C14
H14
C
H
sing
1.09
N
N
73
C14
H15
C
H
sing
1.09
N
N
74
C15
H16
C
H
sing
1.09
N
N
75
C15
H17
C
H
sing
1.09
N
N
76
C17
H18
C
H
sing
1.09
N
N
77
C17
H19
C
H
sing
1.09
N
N
78
C18
H20
C
H
sing
1.09
N
N
79
C18
H21
C
H
sing
1.09
N
N
80
C20
H22
C
H
sing
1.09
N
N
81
C20
H23
C
H
sing
1.09
N
N
82
C21
H24
C
H
sing
1.09
N
N
83
C21
H25
C
H
sing
1.09
N
N
84
C25
H26
C
H
sing
1.09
N
N
85
C26
H27
C
H
sing
1.09
N
N
86
C26
H28
C
H
sing
1.09
N
N
87
C27
H29
C
H
sing
1.09
N
N
88
C27
H30
C
H
sing
1.09
N
N
89
C28
H31
C
H
sing
1.09
N
N
90
C29
H32
C
H
sing
1.09
N
N
91
C29
H33
C
H
sing
1.09
N
N
92
C31
H34
C
H
sing
1.08
N
N
93
C32
H35
C
H
sing
1.08
N
N
94
C33
H36
C
H
sing
1.08
N
N
95
C34
H37
C
H
sing
1.08
N
N
96
C35
H38
C
H
sing
1.08
N
N
97
C40
H39
C
H
sing
1.09
N
N
98
C40
H40
C
H
sing
1.09
N
N
99
C42
H41
C
H
sing
1.08
N
N
100
C44
H42
C
H
sing
1.08
N
N
101
C46
H43
C
H
sing
1.09
N
N
102
C46
H44
C
H
sing
1.09
N
N
103
C48
H45
C
H
sing
1.08
N
N
104
C49
H46
C
H
sing
1.08
N
N
105
C50
H47
C
H
sing
1.08
N
N
106
C51
H48
C
H
sing
1.08
N
N
107
C52
H49
C
H
sing
1.08
N
N
108
C53
H50
C
H
sing
1.08
N
N
109
N12
H51
N
H
sing
0.97
N
N
110
N24
H53
N
H
sing
0.97
N
N
111
N36
H54
N
H
sing
0.97
N
N