LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
DNA repair enzyme. Molecular model of a recG molecule (purple) complexed with a three-way DNA (deoxyribonucleic acid, pink, green and yellow) junction. RecG binds to DNA when a replication fork is stalled due to a damaged DNA strand. RecG reverses the fork past the damage, creating a four-way (Holliday) junction that allows the damage to be repaired.
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