Analysis of interatomic Contacts of Structural Units in PDB entry:

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 1B4G entry

Note, this PDB entry contains modified residue(s) PHOSPHOSERINE (SEP) . This residue is treated as heterogroup (ligand) both in the PDB entry and in LPC/CSU analysis.

There are 2 chains in PDB entry 1B4G (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
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 no helices in PDB entry 1B4G

There are no sheets in PDB entry 1B4G

Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann.