Master regulator of recycling and plasma membrane expression of PD-L1/CD274, an immune inhibitory ligand critical for immune tolerance to self and antitumor immunity. Associates with both constitutive and IFNG-induced PD-L1/CD274 at recycling endosomes, where it protects PD-L1/CD274 from being targeted for lysosomal degradation, likely by preventing its STUB1-mediated ubiquitination. May stabilize PD-L1/CD274 expression on antigen presenting cells and potentiates inhibitory signaling by PDCD1/CD279, its receptor on T-cells, ultimately triggering T-cell anergy.
Aviva Systems Biology总部位于加利福尼亚州圣迭戈，在中国北京设有办公室，专注于为研究需求提供多克隆和单克隆抗体、ELISA试剂盒、蛋白质和定制服务。Aviva Systems Biology生产了24,000种经过验证的多克隆抗体，并提供近20,000种ELISA试剂盒，定制实验室服务包括蛋白表达和纯化、抗体开发，以及ELISA的开发、验证和生产。Aviva Systems Biology为与独特物种和靶标相关的研究提供独特工具，研究领域包括转录因子、癌症、心血管、细胞生物学、DNA损伤和修复、表观遗传学、信号转导、细胞分化、干细胞生物学等等。
