alphagenome.data.gene_annotation.extract_tss# alphagenome.data.gene_annotation.extract_tss(gtf, feature='transcript')[source]# Extract transcription start sites (TSS) from a DataFrame. Parameters: gtf (DataFrame) – pd.DataFrame containing gene annotation. feature (str (default: 'transcript')) – Feature in the GTF file to use (either transcript or gene). Return type: DataFrame Returns: pd.DataFrame containing transcription start sites (width=0, 0-based).