Schlafen family member 5 (SLFN5)

Schlafen family member 5 (SLFN5) is a human protein encoded by the SLFN5 gene and a member of the Schlafen protein family, specifically classified in the Group III subfamily, which is structurally characterized by a DNA/RNA helicase-like C-terminal domain, but lacking clear enzymatic ATPase or nuclease activity[1][7]. SLFN5 is an interferon-inducible protein with roles in transcriptional regulation, cell cycle control, immune response modulation, suppression of viral gene expression (notably HSV-1), and cellular DNA repair[1][7]. In cancer biology, SLFN5 can either inhibit or promote tumor proliferation and metastasis, depending on the tumor type, making it a significant—though complex—therapeutic target[5]. High expression of SLFN5 is associated with tumor diagnosis and prognosis in multiple cancer types, and its molecular roles include binding DNA/tRNA and modulating gene expression through nucleic acid interaction, though its exact enzyme functions remain incompletely characterized[1][7].

Other names

SLFN5MGC19764schlafen family member 5

No specific mechanism for drugs identified. Mechanistic studies suggest that, as a therapeutic target, activities may involve inhibition of tumor cell proliferation, suppression of transcriptional activation by STAT1 (interferon signaling), or regulation of DNA accessibility in viral infection[5][7].