Ubiquitin-like protein 7 (UBL7)

Ubiquitin-like protein 7 (UBL7) is a member of the ubiquitin-like (UBL) family of proteins and is characterized by the presence of both ubiquitin-like (UBL) and ubiquitin-associated (UBA) domains[1][7]. UBL7 acts as a regulatory adaptor within the ubiquitin-proteasome system, interacting with components such as the VCP/p97 complex, UBE4B, and the proteasome, and modulating the degradation rate of ubiquitinated substrates, specifically slowing the degradation of certain factors critical for spermiogenesis[1]. It also enhances antiviral innate immune signaling by promoting K27-linked polyubiquitination of MAVS, thereby strengthening interferon signaling pathways[6]. UBL7 is primarily cytoplasmic and is highly expressed in testis, where it is indispensable for proper sperm development by protecting key structural proteins from excessive proteasomal degradation[1][6][7]. - UBL7 is not currently considered a classical therapeutic target such as a receptor, enzyme, or transporter, nor are there drugs directly known to target it. - It has emerging interest as a specialized regulator within the ubiquitin system, but it is not yet a focus of drug development or biomarker strategies[1][6]. - No direct links to major human diseases beyond rare chromosomal deletion syndromes have been established, although its broader biological significance is still under investigation[6].

Other names

Bone marrow stromal cell ubiquitin-like proteinBMSC-UbPSB132TCBA1MGC14421ubiquitin like 7Ubiquitin-like protein SB132