What are the differences between base editing and prime editing?

Question

Accepted Answer

Basis of differentiation

Base editing

Prime editing

Definition

Base editing is a form of genome editing that allows for precise alterations to the DNA sequence at targeted locations

Prime editing is a gene editing technique designed to make precise alterations to the DNA sequence by introducing targeted small deletions, insertions and substitutions

Capeabilities

Is able to make 4 kinds of DNA substitutions

Is able to make all 12 types of DNA substitutions, large insertions (up to 200 bases), and deletions (more then 5000 bases)

Components

Cas9 protein + deaminase enzyme

Cas9 protein fused to engineered reverse transcriptase

Mechanism

Directly converts one base to another

Uses a prime editing complex for precise edits

Template DNA

No template required

Requires a prime editing guide RNA (pegRNA) and a reverse transcriptase

Basis of differentiation	Base editing	Prime editing
Definition	Base editing is a form of genome editing that allows for precise alterations to the DNA sequence at targeted locations	Prime editing is a gene editing technique designed to make precise alterations to the DNA sequence by introducing targeted small deletions, insertions and substitutions
Capeabilities	Is able to make 4 kinds of DNA substitutions	Is able to make all 12 types of DNA substitutions, large insertions (up to 200 bases), and deletions (more then 5000 bases)
Components	Cas9 protein + deaminase enzyme	Cas9 protein fused to engineered reverse transcriptase
Mechanism	Directly converts one base to another	Uses a prime editing complex for precise edits
Template DNA	No template required	Requires a prime editing guide RNA (pegRNA) and a reverse transcriptase

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