Fbx4蛋白质及其研究进展

泛素介导的蛋白降解途径参与了许多生物学过程.SCF复合体是一种非常重要的E3 泛素连接酶,F-box蛋白是SCF复合体的一个亚基,Fbx4蛋白是众多F-box蛋白中的一种,是底物特异性识别SCF Fbx4/αβ-crystallin酶的重要组成部分,Fbx4蛋白失活或表达水平改变影响SCFFbx4/αβ-crystallin酶活性,从而影响细胞周期蛋白D1的表达水平.同时Fbx4蛋白还是端粒长度调节的一个重要调控因子.

Research on Fbx4 protein

Protein degradation mediated by ubiquitin-proteasome pathway is involved in many biological processes.SCF complex is a sort of important E3 ubiquitin-ligase enzyme.Fbx4 protein is one of F-box protein family members,an important component of substrate-specific ScF Fbx4/αβ-crystallin ligase,and a subunit of SCF complex.Inactivation of Fbx4 protein or alteration of its expression level will influence activity of SCF Fbx4/αβ-crystallin ligase,thus will influence expression level of Cyclin D1.And Fbx4 protein is also an important regulatory factor for telomere maintenance.