Analysis of interatomic Contacts of Structural Units in PDB entry:
4PKA


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 4PKA entry

There are 2 chains in PDB entry 4PKA (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
X
 LEU 25THR 76
X
 THR 78ALA 381
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 21 helices in PDB entry 4PKA. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
AA1
X
37 40Right-handed 310
Helix 2
AA2
X
41 59Right-handed alpha
Helix 3
AA3
X
65 69Right-handed 310
Helix 4
AA4
X
77 88Right-handed alpha
Helix 5
AA5
X
98 100Right-handed 310
Helix 6
AA6
X
101 114Right-handed alpha
Helix 7
AA7
X
127 139Right-handed alpha
Helix 8
AA8
X
142 146Right-handed 310
Helix 9
AA9
X
173 177Right-handed 310
Helix 10
AB1
X
179 189Right-handed alpha
Helix 11
AB2
X
224 236Right-handed alpha
Helix 12
AB3
X
237 238Right-handed 310
Helix 13
AB4
X
239 246Right-handed 310
Helix 14
AB5
X
249 251Right-handed 310
Helix 15
AB6
X
265 269Right-handed 310
Helix 16
AB7
X
271 276Right-handed alpha
Helix 17
AB8
X
279 310Right-handed alpha
Helix 18
AB9
X
312 314Right-handed 310
Helix 19
AC1
X
325 330Right-handed 310
Helix 20
AC2
X
335 350Right-handed alpha
Helix 21
AC3
X
361 381Right-handed alpha
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There are 2 sheets in PDB entry 4PKA. Click on sheet of interest to get list of strands forming it: AA1, AA2,

There are 5 strands in AA1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
X
149 152first strand
Strand 2
X
72 75parallel
Strand 3
X
29 34parallel
Strand 4
X
253 258parallel
Strand 5
X
316 319parallel
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There are 4 strands in AA2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
X
161 162first strand
Strand 2
X
154 156anti-parallel
Strand 3
X
208 215anti-parallel
Strand 4
X
197 202anti-parallel
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