Download MendeleyCrystal structure of the delta' subunit of the clamp-loader complex of E. coli DNA polymerase III.
Guenther, B., Onrust, R., Sali, A., O'Donnell, M., Kuriyan, J.(1997) Cell 91: 335-345
- PubMed: 9363942
- DOI: https://doi.org/10.1016/s0092-8674(00)80417-1
- Primary Citation of Related Structures:
1A5T - PubMed Abstract:
The crystal structure of the delta' subunit of the clamp-loader complex of E. coli DNA polymerase III has been determined. Three consecutive domains in the structure are arranged in a C-shaped architecture. The N-terminal domain contains a nonfunctional nucleotide binding site. The catalytic component of the clamp-loader complex is the gamma subunit, which is homologous to delta'. A sequence-structure alignment suggests that nucleotides bind to gamma at an interdomain interface within the inner surface of the "C." The alignment is extended to other clamp-loader complexes and to the RuvB family of DNA helicases, and suggests that each of these is assembled from C-shaped components that can open and close the jaws of the "C" in response to ATP binding and hydrolysis.
Organizational Affiliation:
The Rockefeller University, New York, New York 10021, USA.
