NKX2-5

Transcription factor required for the development of the heart and the spleen. During heart development, acts as a transcriptional activator of NPPA/ANF in cooperation with GATA4 (By similarity). May cooperate with TBX2 to negatively modulate expression of NPPA/ANF in the atrioventricular canal (By similarity). Binds to the core DNA motif of NPPA promoter. Together with PBX1, required for spleen development through a mechanism that involves CDKN2B repression. Positively regulates transcription of genes such as COL3A1 and MMP2, resulting in increased pulmonary endothelial fibrosis in response to hypoxia..

Function from UniProtKB (P52952), read 2026-09-23. CC BY 4.0.