Analysis of interatomic Contacts of Structural Units in PDB entry:
1SM4


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 1SM4 entry

There are 2 chains in PDB entry 1SM4 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ILE 67TYR 362
B
 ILE 1067TYR 1362
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
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There are 16 helices in PDB entry 1SM4. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
178 186Right-handed alpha
Helix 2
2
A
222 234Right-handed alpha
Helix 3
3
A
254 258Right-handed 310
Helix 4
4
A
260 271Right-handed alpha
Helix 5
5
A
294 301Right-handed alpha
Helix 6
6
A
302 311Right-handed alpha
Helix 7
7
A
324 340Right-handed alpha
Helix 8
8
A
343 354Right-handed alpha
Helix 9
9
B
1178 1186Right-handed alpha
Helix 10
10
B
1221 1234Right-handed alpha
Helix 11
11
B
1254 1258Right-handed 310
Helix 12
12
B
1260 1271Right-handed alpha
Helix 13
13
B
1294 1300Right-handed alpha
Helix 14
14
B
1302 1311Right-handed alpha
Helix 15
15
B
1324 1339Right-handed alpha
Helix 16
16
B
1343 1354Right-handed alpha
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There are 6 sheets in PDB entry 1SM4. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F,

There are 6 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
141 144first strand
Strand 2
A
123 127anti-parallel
Strand 3
A
192 199anti-parallel
Strand 4
A
86 95anti-parallel
Strand 5
A
105 111anti-parallel
Strand 6
A
158 164anti-parallel
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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
A
167 168first strand
Strand 2
A
176 177anti-parallel
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There are 5 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
275 281first strand
Strand 2
A
245 252parallel
Strand 3
A
212 218parallel
Strand 4
A
315 321parallel
Strand 5
A
357 361parallel
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There are 6 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
1141 1144first strand
Strand 2
B
1123 1127anti-parallel
Strand 3
B
1192 1199anti-parallel
Strand 4
B
1086 1095anti-parallel
Strand 5
B
1105 1111anti-parallel
Strand 6
B
1158 1164anti-parallel
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There are 2 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
1167 1168first strand
Strand 2
B
1176 1177anti-parallel
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There are 5 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
1275 1281first strand
Strand 2
B
1245 1252parallel
Strand 3
B
1212 1218parallel
Strand 4
B
1315 1321parallel
Strand 5
B
1357 1361parallel
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