Local complexity of amino acid interactions in a protein core.
Jain, R.K., Ranganathan, R.(2004) Proc Natl Acad Sci U S A 101: 111-116
- PubMed: 14684834 
- DOI: 10.1073/pnas.2534352100
- Primary Citation of Related Structures:  
1Q4A, 1Q4B, 1Q4C, 1Q4D, 1Q4E, 1Q73 - PubMed Abstract: 
Atomic resolution structures of proteins indicate that the core is typically well packed, suggesting a densely connected network of interactions between amino acid residues. The combinatorial complexity of energetic interactions in such a network could be enormous, a problem that limits our ability to relate structure and function ...