Analysis of interatomic Contacts of Structural Units in PDB entry:
1I21


Contacts of Structural Units (CSU) are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332).
For CSU analysis of other PDB entry

This page provides analyses of contacts formed by:
For analysis of ligand-protein contacts, use: 3D structure can be seen in additional window with STING software for 1I21 entry

There are 6 chains in PDB entry 1I21 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 MSE 1ARG 158
B
 MSE 1ARG 158
M
 MSE 1ARG 158
N
 GLY 6LYS 159
X
 GLY 6ARG 158
Y
 LEU 3ARG 158
Residue contacts

1. List of contacts for up to 10 consecutive residues:
Chain ID from residue number to residue number


2. Detailed analyses of contacts for any single residue:
Residue number chain ID
Back to top of page

There are 48 helices in PDB entry 1I21. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
13 15Right-handed 310
Helix 2
2
A
16 25Right-handed alpha
Helix 3
3
A
34 48Right-handed alpha
Helix 4
4
A
87 92Right-handed alpha
Helix 5
5
A
104 107Right-handed 310
Helix 6
6
A
110 127Right-handed alpha
Helix 7
7
A
136 138Right-handed 310
Helix 8
8
A
139 146Right-handed alpha
Helix 9
9
B
3 5Right-handed 310
Helix 10
10
B
13 15Right-handed 310
Helix 11
11
B
16 25Right-handed alpha
Helix 12
12
B
34 48Right-handed alpha
Helix 13
13
B
87 92Right-handed alpha
Helix 14
14
B
104 107Right-handed 310
Helix 15
15
B
110 127Right-handed alpha
Helix 16
16
B
136 138Right-handed 310
Helix 17
17
B
139 146Right-handed alpha
Helix 18
18
M
13 15Right-handed 310
Helix 19
19
M
16 25Right-handed alpha
Helix 20
20
M
34 46Right-handed alpha
Helix 21
21
M
87 92Right-handed alpha
Helix 22
22
M
104 107Right-handed 310
Helix 23
23
M
110 127Right-handed alpha
Helix 24
24
M
136 138Right-handed 310
Helix 25
25
M
139 146Right-handed alpha
Helix 26
26
N
13 15Right-handed 310
Helix 27
27
N
16 25Right-handed alpha
Helix 28
28
N
34 46Right-handed alpha
Helix 29
29
N
87 92Right-handed alpha
Helix 30
30
N
104 107Right-handed 310
Helix 31
31
N
110 127Right-handed alpha
Helix 32
32
N
136 138Right-handed 310
Helix 33
33
N
139 146Right-handed alpha
Helix 34
34
X
13 15Right-handed 310
Helix 35
35
X
16 25Right-handed alpha
Helix 36
36
X
34 48Right-handed alpha
Helix 37
37
X
87 92Right-handed alpha
Helix 38
38
X
111 127Right-handed alpha
Helix 39
39
X
136 138Right-handed 310
Helix 40
40
X
139 145Right-handed alpha
Helix 41
41
Y
13 15Right-handed 310
Helix 42
42
Y
16 25Right-handed alpha
Helix 43
43
Y
34 48Right-handed alpha
Helix 44
44
Y
87 92Right-handed alpha
Helix 45
45
Y
104 107Right-handed 310
Helix 46
46
Y
111 127Right-handed alpha
Helix 47
47
Y
136 138Right-handed 310
Helix 48
48
Y
139 145Right-handed alpha
Back to top of page

There are 4 sheets in PDB entry 1I21. Click on sheet of interest to get list of strands forming it: A, B, C, D,

There are 13 strands in A sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
2 3first strand
Strand 2
A
7 11anti-parallel
Strand 3
A
65 69anti-parallel
Strand 4
A
74 85anti-parallel
Strand 5
A
93 102anti-parallel
Strand 6
A
128 135parallel
Strand 7
B
149 157anti-parallel
Strand 8
A
149 157anti-parallel
Strand 9
B
130 135anti-parallel
Strand 10
B
93 102parallel
Strand 11
B
74 85anti-parallel
Strand 12
B
65 69anti-parallel
Strand 13
B
7 11anti-parallel
Back to list of sheets
Back to top of page

There are 2 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
49 50first strand
Strand 2
B
59 60anti-parallel
Back to list of sheets
Back to top of page

There are 13 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
M
2 3first strand
Strand 2
M
7 11anti-parallel
Strand 3
M
64 69anti-parallel
Strand 4
M
75 85anti-parallel
Strand 5
M
93 102anti-parallel
Strand 6
M
130 135parallel
Strand 7
N
149 158anti-parallel
Strand 8
M
149 157anti-parallel
Strand 9
N
130 135anti-parallel
Strand 10
N
93 102parallel
Strand 11
N
75 85anti-parallel
Strand 12
N
64 69anti-parallel
Strand 13
N
7 11anti-parallel
Back to list of sheets
Back to top of page

There are 12 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
X
8 11first strand
Strand 2
X
65 68anti-parallel
Strand 3
X
75 85anti-parallel
Strand 4
X
93 102anti-parallel
Strand 5
X
130 135parallel
Strand 6
Y
149 157anti-parallel
Strand 7
X
149 157anti-parallel
Strand 8
Y
130 135anti-parallel
Strand 9
Y
93 102parallel
Strand 10
Y
74 85anti-parallel
Strand 11
Y
65 69anti-parallel
Strand 12
Y
7 11anti-parallel
Back to list of sheets
Back to top of page
Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il