
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
MUS81 Double Nickase Plasmid (h) | sc-402664-NIC | 20 µg | $410.00 | |||
MUS81 Double Nickase Plasmid (h2) | sc-402664-NIC-2 | 20 µg | $410.00 |
MUS81 encodes a structure-specific endonuclease that forms a heterodimer with EME1/EME2 to resolve stalled replication forks and recombination intermediates such as Holliday junction-like structures. It functions within DNA damage response and replication stress pathways, coordinating with homologous recombination and checkpoint signaling to preserve genome stability. MUS81 activity contributes to chromosome segregation fidelity and limits accumulation of toxic DNA intermediates during S phase. Dysregulated MUS81-dependent processing has been linked to elevated genomic instability and altered sensitivity to replication stress in cancer-associated contexts, making it a common target in mechanistic studies of DNA repair.
MUS81 Double Nickase Plasmid (h) consists of a matched pair of plasmids engineered for high-specificity editing of the MUS81 locus in human cell lines. Each plasmid expresses a Cas9 D10A nickase and a distinct sgRNA targeting opposite DNA strands within MUS81. When directed to adjacent sites on opposite DNA strands, the two nickases generate offset single-strand nicks that together produce a staggered double-strand break, requiring coordinated on-target activity from both guides. The resulting DNA break is resolved by endogenous cellular repair pathways, most commonly through non-homologous end joining (NHEJ), leading to insertions or deletions that disrupt MUS81 function. By requiring dual sgRNA engagement at the target locus, the double nicking approach enhances editing specificity and provides a complementary CRISPR strategy for applications where additional control over targeting precision is desired.
To support efficient identification of edited cells, one plasmid encodes GFP for fluorescent visualization of transfected populations, while the companion plasmid carries a puromycin resistance gene for antibiotic selection. Together, these features support efficient enrichment of co-transfected populations and simplify the validation of MUS81-disrupted clones.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.