



Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
FHL-1 Double Nickase Plasmid (h) | sc-403541-NIC | 20 µg | $410.00 | |||
FHL-1 Double Nickase Plasmid (h2) | sc-403541-NIC-2 | 20 µg | $410.00 |
FHL1 encodes four-and-a-half LIM domains protein 1 (FHL-1), a LIM-only adaptor that scaffolds protein complexes controlling cytoskeletal organization, mechanotransduction, and transcriptional responses in striated muscle. FHL-1 localizes to focal adhesions, sarcomeric structures, and the nucleus, where it modulates signaling outputs from integrin-linked pathways and stress-responsive kinase cascades that shape muscle differentiation and remodeling. By coordinating interactions among structural proteins and transcriptional regulators, FHL-1 helps maintain muscle integrity and contractile function. Dysregulation of FHL1 is associated with inherited myopathies and cardiomyopathic phenotypes, making it a relevant target for studying muscle disease mechanisms and genotype–phenotype relationships.
FHL-1 Double Nickase Plasmid (h) consists of a matched pair of plasmids engineered for high-specificity editing of the FHL1 locus in human cell lines. Each plasmid expresses a Cas9 D10A nickase and a distinct sgRNA targeting opposite DNA strands within FHL1. 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 FHL1 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 FHL1-disrupted clones.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.