In silico protein fragmentation reveals the importance of critical nuclei on domain reassembly.

ABSTRACT: Protein complementation assays (PCAs) based on split protein fragments have become powerful tools that facilitate the study and engineering of intracellular protein-protein interactions. These assays are based on the observation that a given protein can be split into two inactive fragments and these fragments can reassemble into the original properly folded and functional structure. However, one experimentally observed limitation of PCA systems is that the folding of a protein from its fragments is dramatically slower relative to that of the unsplit parent protein. This is due in part to a poor understanding of how PCA design parameters such as split site position in the primary sequence and size of the resulting fragments contribute to the efficiency of protein reassembly. We used a minim

SUBMITTER: Contreras Martinez LM 

PROVIDER: S-EPMC2242749 | biostudies-literature | 2008 Mar

REPOSITORIES: biostudies-literature