Cytokeratin 4 Antibody

About the Target

Cytokeratin 4 (CK4) is a type II intermediate filament protein of the keratin family, essential for maintaining epithelial integrity and resilience. Encoded by the KRT4 gene on chromosome 12q13, CK4 features an alpha-helical rod domain, facilitating dimerization and filament assembly, flanked by non-helical head and tail regions that mediate interactions with cytoskeletal components. Depending on the literature source, KRT4 may also be discussed as Cytokeratin 4 and Keratin.

Reported cellular context includes intermediate filament and keratin, which can matter when signal is compared across treatments or changing cell states. Following KRT4 across matched perturbations can help separate abundance effects from shifts in localization, complex assembly, or pathway state. In practice, this target is often considered at the family or isoform-group level, so experimental interpretation benefits from matched controls and clear comparison logic.

Research Context

KRT4 is commonly interpreted in the context of cancer research, and readouts are often stronger when a study separates expression changes from compartment-level redistribution. When reported signal spans intermediate filament and keratin, 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 intermediate filament and keratin across matched conditions
• changes associated with proliferative state, oncogenic signaling, or treatment response
• co-patterning with orthogonal markers and control conditions that clarify pathway state
• time-matched comparisons so changes reflect biology rather than handling or sampling drift

Variant Considerations

If your project spans exploratory questions, the regular version offers a balanced option for establishing baseline signal behavior for KRT4. 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 KRT4 reflect biology rather than handling. When interpreting KRT4, 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 KRT4 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.