STF-1 Antibody

About the Target

STF-1 (Steroidogenic factor 1, also called Ad4BP and encoded by the NR5A1 gene) is an orphan nuclear receptor and transcription factor essential for endocrine development and steroid hormone biosynthesis. Structurally, it possesses a zinc finger DNA-binding domain, a ligand-binding domain, activation domains (AF-1/AF-2), a hinge region, and a fushi tarazu factor 1 (FTZ-F1) box that aids DNA recognition, and its activity is further regulated by phosphorylation, SUMOylation, and acetylation. Depending on the literature source, NR5A1 may also be discussed as STF-1 and Nuclear Hormone Receptors; Nuclear Receptors; SF-1; SF1; STF-1; STF1.

Reported cellular context includes nucleus, which can matter when signal is compared across treatments or changing cell states. Following NR5A1 across matched perturbations can help separate abundance effects from shifts in localization, complex assembly, or pathway state.

Research Context

NR5A1 is commonly interpreted in the context of developmental biology and endocrinology research, and readouts are often stronger when a study separates expression changes from compartment-level redistribution. When reported signal spans nucleus, a defined reference condition can make comparisons more interpretable across perturbations, passages, or replicate sets.

Consider these angles when interpreting target-level changes:

• signal enrichment within nucleus relative to the broader cellular background
• stage-dependent patterns during differentiation, morphogenesis, or lineage commitment
• responses to hormone-dependent signaling or endocrine feedback context
• 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 NR5A1. 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 NR5A1 reflect biology rather than handling. When interpreting NR5A1, 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 NR5A1 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.