**Background of WDR4 Antibody**
The WDR4 antibody is a tool used to detect WDR4 (WD repeat domain 4), a protein encoded by the *WDR4* gene in humans. WDR4 is a member of the WD-repeat protein family, characterized by conserved motifs of ~40 amino acids terminating with tryptophan-aspartic acid (WD) residues. These proteins typically function as scaffolds for multi-protein complexes, influencing diverse cellular processes. WDR4 is best known for its role in tRNA modification, specifically in the formation of 7-methylguanosine (m7G) at position 46 in tRNA molecules, a process critical for translation fidelity and genome stability. It partners with METTL1. forming the METTL1-WDR4 methyltransferase complex, which is essential for embryonic development and cell proliferation.
WDR4 dysregulation has been implicated in cancer, developmental disorders, and neurological conditions. For instance, *WDR4* mutations are linked to primordial dwarfism and microcephaly, while its overexpression is observed in hepatocellular carcinoma and neuroblastoma. The WDR4 antibody is widely employed in research to study these associations, enabling detection of WDR4 expression levels via techniques like Western blotting, immunohistochemistry (IHC), and immunofluorescence (IF). Commercially available antibodies are often validated for specificity through knockdown/knockout controls, ensuring reliable identification of WDR4 in cellular or tissue samples.
Studies using WDR4 antibodies have also elucidated its interaction with pathways like the c-Myc oncogene network, highlighting its role in cell cycle regulation and tumorigenesis. This antibody remains crucial for exploring WDR4's biological functions and therapeutic potential in disease contexts.