Upstream Stimulatory Factors

**Definition:** Ubiquitously expressed basic HELIX-LOOP-HELIX MOTIF transcription factors. They bind CANNTG sequences in the promoters of a variety of GENES involved in carbohydrate and lipid metabolism.

**Tree numbers:** - D12.776.260.103.937 - D12.776.930.125.937

**Synonyms:** - Helix-Loop-Helix Activator USF - USF Transcription Factors