SLX4 interacting protein (SLX4IP)

SLX4 interacting protein (SLX4IP) is a monomeric protein encoded by the SLX4IP gene on chromosome 20 in humans. It functions primarily as an accessory regulatory factor in DNA repair, especially coordinating the SLX4-XPF-ERCC1 multiprotein complex involved in the resolution of DNA interstrand crosslinks—a critical pathway for the maintenance of genomic stability. SLX4IP directly interacts with the N-terminal region of SLX4 and with XPF (endonuclease), and these protein-protein interactions are crucial for assembling the Holliday junction resolvase and promoting the recruitment and stability of DNA structure-specific endonucleases required for repair processes. SLX4IP is also important for the regulation of the alternative lengthening of telomeres (ALT), a process relevant in certain cancers, where it influences telomere dynamics and genome maintenance. Alterations in SLX4IP expression have been linked to cancer susceptibility and metastatic relapse, especially in breast cancer. Loss or dysfunction of SLX4IP can sensitize cells to DNA crosslinking agents and is functionally connected to Fanconi anemia pathway defects, underscoring its importance in cell cycle control, DNA damage response, and genomic maintenance. SLX4IP itself is not classified as an enzyme, receptor, ion channel, or transporter, but as an accessory regulatory scaffold in DNA repair machinery ("Other"). No direct drug therapies or inhibitors targeting SLX4IP exist, but its expression may serve as a biomarker in cancer prognosis.

Other names

SLX4IPC20orf94bA204H22.1bA254M13.1dJ1099D15.3SLX4-interacting protein

No described drugs or inhibitors for SLX4IP. Its role is accessory to DNA repair complexes, so in theory, any drugs modulating DNA repair pathways (e.g., PARP inhibitors) may indirectly affect processes involving this protein, but there is no direct evidence or approved therapeutic targeting.