TFE3, BHLHE33, Transcription factor E3, Class E basic helix-loop-helix protein 33, bHLHe33
Transcription factor that specifically recognizes and binds E-box sequences (3-CANNTG-5). Efficient DNA-binding requires dimerization with itself or with another MiT/TFE family member such as TFEB or MITF. In association with TFEB, activates the expression of CD40L in T-cells, thereby playing a role in T-cell-dependent antibody responses in activated CD4(+) T-cells and thymus-dependent humoral immunity.