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ji-rapa01

RapA, the only Swi2/Snf2 protein in bacteria. The crystal structure of E. coli RNA polymerase (RNAP)-associated protein with ATPase activity (EcRapA) was determined at 3.2-Å resolution (PDB: 3DMQ). Top: the domain organization of the protein is shown with boundaries. Middle: the domain arrangement of the protein is shown schematically by two views related to each other by a 180-degree rotation around the vertical axis. Left, right, and bottom: the folds of individual domains and a cluster of four domains (1A, 1B, 2A and 2B, which form the ATPase core of the enzyme) are illustrated (Gary Shaw, Jianhua Gan, et al. Structure 16:1417-1427, 2008. PubMed: 18786404).