Structural basis of high-fidelity DNA synthesis by yeast DNA polymerase [delta]
DNA polymerase {delta} (Pol {delta}) is a high-fidelity polymerase that has a central role in replication from yeast to humans. We present the crystal structure of the catalytic subunit of yeast Pol {delta} in ternary complex with a template primer and an incoming nucleotide. The structure, determined at 2.0-{angstrom} resolution, catches the enzyme in the act of replication, revealing how the polymerase and exonuclease domains are juxtaposed relative to each other and how a correct nucleotide is selected and incorporated. The structure also reveals the 'sensing' interactions near the primer terminus, which signal a switch from the polymerizing to the editing mode. Taken together, the structure provides a chemical basis for the bulk of DNA synthesis in eukaryotic cells and a framework for understanding the effects of cancer-causing mutations in Pol {delta}.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1005867
- Journal Information:
- Nat. Struct. Mol. Biol., Journal Name: Nat. Struct. Mol. Biol. Journal Issue: (9) ; 09, 2009 Vol. 16; ISSN 1545-9993
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Structural Basis of High-Fidelity DNA Synthesis by Yeast DNA Polymerase δ
Polymerization and editing modes of a high-fidelity DNA polymerase are linked by a well-defined path
Human DNA Polymerase Kappa Encircles DNA: Implicatins for Mismatch Extension and Lesion Bypass
Journal Article
·
Wed Dec 31 23:00:00 EST 2008
· Nature Structural and Molecular Biology
·
OSTI ID:980510
Polymerization and editing modes of a high-fidelity DNA polymerase are linked by a well-defined path
Journal Article
·
Thu Oct 22 20:00:00 EDT 2020
· Nature Communications
·
OSTI ID:1816482
Human DNA Polymerase Kappa Encircles DNA: Implicatins for Mismatch Extension and Lesion Bypass
Journal Article
·
Sun Dec 31 23:00:00 EST 2006
· Molecular Cell
·
OSTI ID:959936