# Find corresponding symbol for gene used in Seurat

I have a Seurat object

> pbmc
An object of class Seurat
48608 features across 11709 samples within 2 assays
Active assay: SCT (22220 features, 3000 variable features)
1 other assay present: RNA
2 dimensional reductions calculated: pca, umap
>


I want to plot TCRVδ2

> FeaturePlot(pbmc,"TCRVδ2")
Error: None of the requested features were found: TCRVδ2 in slot data
In FetchData(object = object, vars = c(dims, "ident", features),  :
>


This data base is about human TCR genes

https://www.genenames.org/data/genegroup/#!/group/370

But I even can not find this gene here

Do you know what is the corresponding symbol for this gene used in Seurat?

TCRVδ2 is not a gene, but it defines a specific subset of gamma-delta TCRs. You can look at TRDC (delta chain) and TRGC1 and TRGC2 (gamma chains). TCRVδ2 should have the combo TRDC-TRGC1, while TCRVδ1 should express TRDC-TRGC2. You may need to increase the resolution of your clustering, to avoid clustering the gamma-delta T cells with the NK cells.