DNA-directed DNA Polymerase

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** Catalyses DNA-template-directed extension of the 3'- end of a DNA strand by one nucleotide at a time. Cannot initiate a chain de novo. Requires a primer, which may be DNA or RNA. (IUBMB Enzyme Nomenclature)

**Synonyms:** - DNA-Dependent DNA Polymerase - EC 2.7.7.7