OCA-T1 Antibody #20217
- WB
Supporting Data
| REACTIVITY | H |
| SENSITIVITY | Endogenous |
| MW (kDa) | 30 |
| SOURCE | Rabbit |
Application Key:
- WB-Western Blotting
Species Cross-Reactivity Key:
- H-Human
Product Information
Product Usage Information
| Application | Dilution |
|---|---|
| Western Blotting | 1:1000 |
Storage
Protocol
Specificity / Sensitivity
OCA-T1 Antibody recognizes endogenous levels of total OCA-T1 protein.
Species Reactivity:
Human
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Pro215 of human OCA-T1 protein. Antibodies are purified by peptide affinity chromatography.
Background
OCA-T1 is encoded by the gene POU2AF2 (C11orf53), which was identified in a single-cell RNA sequencing study to be expressed selectively in tuft cells from mouse and human tissues (1). The expression of OCA-T1 was observed to occur in a pattern strikingly similar to that of POU2F3, a master regulator of tuft cell development whose expression also defines a tuft cell-like variant (SCLC-P) of small cell lung cancers (2). Although containing no recognizable structural domains, OCA-T1 showed minor sequence similarity with OCA-B, a protein encoded by the POU2AF1 gene and reported to be an activator of selected Class II POU domain transcription factors (3). Functional studies revealed that OCA-T1 forms a protein complex with POU2F3; these proteins furthermore share genomic binding sites and promote the expression of genes directly associated with tuft cell development. Lastly, Crispr/Cas9-mediated deletion of POU2AF2 in mice revealed that OCA-T1 is functionally required for normal tuft cell development (1). Collectively, these findings suggest that OCA-T1 is a critical component of the POU2F3-containing transcriptional complex that regulates the expression of genes governing tuft cell development.
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