Enables several functions, including DNA-binding transcription factor activity; beta-catenin binding activity; and chromatin binding activity. Acts upstream of or within several processes, including axial mesoderm morphogenesis; regulation of transcription, DNA-templated; and somatic stem cell population maintenance. Located in nucleus. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; sensory organ; and skin. Orthologous to human TCF7L1 (transcription factor 7 like 1). [provided by Alliance of Genome Resources, Apr 2022]