ArCas12a, derived from the CRISPR system of Agathobacter rectalis bacteria and also known as Cpf1, is a monomeric protein consisting of 1263 amino acids. As a class II (type V) member of the CRISPR/Cas system, ArCas12a functions solely through a single effector protein and exhibits significant differences from Cas9, such as targeting motifs rich in T, not requiring trans-activating crRNA, producing sticky ends upon DNA double-strand breaks, participating in RNA processing, and possessing DNA nuclease activity.

ArCas12a lacks the HNH domain and can independently utilize its RuvC domain to recognize the PAM region rich in thymine (T) at the 5' end of the target nucleic acid under the guidance of CRISPR RNA (crRNA), initiating cleavage of the target DNA. It has been successfully used for genome editing in many mammals and plants. Additionally, ArCas12a exhibits trans-cleavage activity, capable of indiscriminately cutting non-target single-stranded DNA (ssDNA) in the reaction system.

Compared to other LbCas12a/AsCas12a, ArCas12a demonstrates higher temperature adaptability (25-55oC), making it suitable for genome editing and nucleic acid detection applications.

Broad reaction temperature range: Exhibits cleavage activity within the temperature range of 25-55oC

Low nuclease residue: No residual exonuclease, nickase, or RNase

Cis-cleavage activity: Highly Effective Cleavage of Double-Stranded DNA in Vitro

Trans-cleavage activity: High trans-cleavage activity, suitable for nucleic acid detection

• CRISPR/Cas gene editing
• Diagnostic and detection based on the CRISPR/Cas system
• Other detection applications combined with isothermal nucleic acid amplification technologies (RPA and LAMP), etc

Test of ArCas12a cis-cleavage activity: M: Marker; C: Template double-stranded DNA (dsDNA)

ArCas12a Trans-cleavage Activity Test Results