The steric gate of DNA polymerase ι regulates ribonucleotide incorporation and deoxyribonucleotide fidelity.

Abstract excerpt

Accurate DNA synthesis in vivo depends on the ability of DNA polymerases to select dNTPs from a nucleotide pool dominated by NTPs. High fidelity replicative polymerases have evolved to efficiently exclude NTPs while copying long stretches of undamaged DNA. However, to bypass DNA damage, cells utilize specialized low fidelity polymerases to perform translesion DNA synthesis (TLS). Of interest is human DNA...

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