rab-28 Antibody

Introduction to RAB28 Antibody

RAB28 antibodies are immunological tools designed to detect and study the small GTPase RAB28, a member of the RAS oncogene family. These antibodies enable researchers to investigate RAB28's roles in intracellular trafficking, ciliary function, and disease pathogenesis, particularly in photoreceptor biology and ciliopathies .

Intracellular Trafficking in Trypanosoma brucei

• RAB28 antibodies confirmed colocalization with ESCRT I (Vps23) and retromer (Vps26) complexes.

• RNAi-mediated RAB28 depletion disrupted lysosomal cargo delivery and increased cell survival under stress .

Photoreceptor Function in Vertebrates

• Zebrafish rab28 mutants showed defective outer segment shedding, implicating RAB28 in retinal phagocytosis .

• In humans, RAB28 antibodies identified splice variants critical for cone-rod dystrophy pathology .

Extracellular Vesicle Regulation in C. elegans

• RAB28 antibodies revealed its BBSome-dependent localization to periciliary membranes.

• Loss of RAB28 led to ectopic EV accumulation, suggesting a role in EV biogenesis suppression .

Validation and Quality Assurance

• Specificity: Antibodies validated using knockout controls (e.g., T. brucei RNAi lines) .

• Cross-Reactivity: Confirmed in human, mouse, rat, and zebrafish models .

• Functional Assays: Used to assess RAB28’s GTPase activity and interaction partners (e.g., PDE6D) .

Clinical and Pathological Relevance

• Cone-Rod Dystrophy: RAB28 antibodies aid in diagnosing CORD18-linked mutations .

• Ciliopathies: Dysregulated RAB28 correlates with EV defects, a potential contributor to Bardet-Biedl syndrome .