Ku80 Antibody

About the Target

Ku80, encoded by the XRCC5 gene, is a key component of the Ku heterodimer, partnering with Ku70 to mediate the non-homologous end joining (NHEJ) pathway, one of the primary mechanisms for repairing DNA double-strand breaks (DSBs). Ku80 comprises three main domains: an N-terminal von Willebrand A (vWA)-like α/β domain involved in protein-protein interactions, a central β-barrel domain that encircles DNA ends, and a C-terminal α-helical arm that stabilizes interaction with Ku70 and binds the DNA-dependent protein kinase catalytic subunit (DNA-PKcs). Depending on the literature source, KU80 may also be discussed as G22P2 and XRCC5.

Reported cellular context includes chromosome and nucleus, which can matter when signal is compared across treatments or changing cell states. Following KU80 across matched perturbations can help separate abundance effects from shifts in localization, complex assembly, or pathway state.

Research Context

KU80 is commonly interpreted in the context of immunology and dna damage / repair research, and readouts are often stronger when a study separates expression changes from compartment-level redistribution. When reported signal spans chromosome and nucleus, a defined reference condition can make comparisons more interpretable across perturbations, passages, or replicate sets.

Consider these angles when interpreting target-level changes:

• apparent redistribution between chromosome and nucleus across matched conditions
• context differences tied to immune-cell state, activation, or lineage composition
• stress-induced changes after checkpoint activation or genotoxic challenge
• co-patterning with orthogonal markers and control conditions that clarify pathway state

Variant Considerations

If your project spans exploratory questions, the regular version offers a balanced option for establishing baseline signal behavior for KU80. This can help when protocols evolve over time and the goal is to compare experiments using a stable reference workflow.

Standardize sampling time, control choice, and downstream analysis thresholds so apparent differences in KU80 reflect biology rather than handling. When interpreting KU80, it is often useful to decide early whether the main question is overall abundance, compartmental enrichment, or context-dependent redistribution.

For multi-run studies, a shared reference condition can keep KU80 trends easier to compare across datasets. That kind of consistency is especially helpful when follow-up work expands to new perturbations, model systems, or longitudinal collections.