title: Recombining DNA by protein swivels.
abstract: Two new reports on serine recombinases, one of a crystal snapshot in an alternate rotational conformer poised for DNA cleavage (Keenholtz et al., 2011), and a second employing single-DNA molecule approaches (Bai et al., 2011), provide strong support for the subunit rotation model for exchanging DNA strands.
authors.affiliation: Department of Biological Chemistry, David Geffen School of Medicine at UCLA, 615 Charles Young Drive South, Los Angeles, CA 90095-1737, USA. rcjohnson@mednet.ucla.edu
authors.forename: Reid C
authors.initials: RC
authors.lastname: Johnson
authors.forename: Meghan M
authors.initials: MM
authors.lastname: McLean