... Molecular Biophysics Unit, Indian Institute of Science, Bangalore, India2 Department of Biochemistry, Indian Institute of Science, Bangalore, IndiaDuring stress and the stationary phase of ... dimer; and (b) a b-hairpin, which is involved in intersubunitinteractions, leading to a loose tetrameric organizationof subunits (Fig. 2). The overall structure and theSt SurE N-terminal domain ... 242–245, bringing the polypeptide chainback to the same subunit. We analyzed the interactionsof corresponding residues in SurEs to understand thereasons for domain swapping. A few strong interac-tions...