Primase

DNA primase is a type of RNA polymerase. It catalyzes de novo the synthesis of a short RNA segment, called a primer, which is complementary to an ssDNA template. This primer enables the DNA-dependent DNA polymerase to copy the ssDNA. The RNA primer is removed by the exonuclease after elongation by DNApol.

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Enzymatic reaction:

There are two class: DnaG (Bacteria, Phages) and archaeo-eukaryotic primase AEP (Archaea, Eukaryotes, phages, archaeal viruses and eukaryotic viruses

Domain:

Mechanism :

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Viral molecular biology Virus entry
Transcription and replication
Virus exit
Replication cycles
Virion
Enzymes
ProteinDB Proteins sequences: NCBI, UniProt
Structure: PDB entries
AEP type: Monkeypoxvirus E5

DnaG type: Bacteriophage T7