Recombinant Human APOBEC3A Protein，His

APOBEC3A (Apolipoprotein B mRNA Editing Enzyme Catalytic Polypeptide 3A) is a member of the APOBEC family of proteins, which are known for their role in cytidine deamination, a critical process in RNA editing and DNA mutation. Initially identified as an innate immune factor, APOBEC3A plays a significant role in defending against viral infections, particularly by targeting retroviruses and transposable elements. Its enzymatic activity introduces mutations in viral genomes, thereby hindering their replication and contributing to the host's immune response. Beyond its protective role, recent studies have suggested that APOBEC3A may also be involved in various cellular processes, including cancer development, as its activity can lead to mutagenesis in the host genome. This dual functionality has made APOBEC3A a topic of increasing interest in cancer research, where aberrant expression or dysfunction of the protein may contribute to tumorigenesis. Furthermore, its potential as a target for cancer immunotherapy is being explored, given its role in modulating the immune landscape within tumors. Thus, understanding the structure, regulation, and mechanisms of action of APOBEC3A is crucial for leveraging its properties in therapeutic contexts, as well as for elucidating its impact on genome stability and viral pathogenesis. The ongoing research into APOBEC3A encompasses diverse fields, including virology, immunology, and cancer biology, demonstrating its importance as a multifaceted player in both innate immunity and disease progression.