A portion of amino acids 100-200 was used as the immunogen for the TCF1 alpha antibody.
Lymphoid Enhancing Factor 1 (LEF1), also called T cell-specific transcription factor 1-alpha (TCF1 alpha) is a transcription factor that belongs to the TCF/LEF family. LEF1 participates as a regulator in Wnt signaling pathways. LEF1 is an important factor in lymphopoiesis and is expressed normally in T and pro-B cells but not expressed in mature B cells. Anti-LEF1 may be used as an aid for differentiation of chronic lymphocytic leukemia/small lymphocytic lymphoma from other small B cell lymphomas.