Tetraspanin-21 (TSPAN21 or Uroplakin-1a or UPK1A or UPKA) Antibody - FFPE Validated

Protein Function

Bring Tetraspanin-21 (UPKA) into view to explore changes across conditions. Tetraspanin-21 is an adhesion-related target that can shift with substrate composition and mechanical cues. Look for shifts in distribution that track with phenotype changes.

In some datasets and protocols, it is referenced by the gene symbol UPKA.

Experimental Applications

Because adhesion complexes are dynamic, timing and confluence can strongly influence measured signal. Pair measurements with orthogonal readouts when interpretation is sensitive to context.

Many workflows benefit from tracking both signal intensity and compartment distribution, especially when the target participates in multi-protein assemblies.

Common experimental questions that benefit from target tracking include:

• focal adhesion versus diffuse membrane distribution
• remodeling after changes in substrate or mechanical stress
• co-variation with cytoskeletal and scaffold partners
• effects of adhesion inhibitors or matrix composition

Workflow Perspective

This fixed-section oriented version is intended for paraffin-embedded tissue, where crosslinking and retrieval steps can shape epitope accessibility. To keep comparisons consistent, align sample preparation steps and define a clear baseline for each series.

When interpreting Tetraspanin-21, consider whether changes track with compartment identity, cell density, or perturbation timing; these factors can influence apparent signal without implying a direct causal link.

For challenging targets, pairing Tetraspanin-21 measurements with a second marker can clarify whether differences arise from regulation, redistribution, or shifts in cell composition within the sample.

With a clear focus on Tetraspanin-21 (UPKA), this fixed-section option fits streamlined studies and fast iteration.