Zebrafish Argonaute 1 Antibody / Ago1

Biological Function: Ago1 binds to small RNAs (miRNAs and siRNAs) and guides RISC to target messenger RNAs (mRNAs) for translational repression or degradation. In zebrafish, Ago1 is particularly important for miRNA function during early development, where it helps regulate maternal mRNA clearance and zygotic gene activation. Functional studies have shown that loss of Ago1 impairs embryonic patterning, cell movement, and germ layer formation. Structure and Domains: Zebrafish Ago1 contains the characteristic PAZ and PIWI domains. The PAZ domain anchors the 3' end of small RNAs, while the PIWI domain has RNase H-like activity, enabling mRNA cleavage in certain contexts. Expression Pattern: Ago1 mRNA is maternally deposited and broadly expressed during early embryogenesis. Later, its expression is enriched in proliferative and neural tissues, reflecting its role in controlling gene expression during development and differentiation. Orthology and Conservation: Zebrafish Ago1 is highly conserved with its mammalian counterparts, including human AGO1. This conservation supports the use of zebrafish as a model for studying RNA interference (RNAi), small RNA pathways, and related genetic regulatory mechanisms.