Oct-1 also known as POU2F1 is a member of the POU domain family of transcription factors. Oct-1 plays a crucial role in regulating gene expression, particularly in tissue-specific transcription. Oct-1 contains a bipartite DNA binding domain that interacts with specific DNA sequences, known as octamer motifs, which are vital for the transcription of various genes, including those involved in immune responses. Oct-1′s ability to form dimers on the palindromic Oct factor-recognition element enhances regulatory capacity, enabling the recruitment of transcriptional co-activators like OBF1. This interaction is essential for the precise control of gene expression in different cell types, highlighting Oct-1′s importance in maintaining cellular identity and function.