| ID | Sequence | Length | GC content |
|---|---|---|---|
| CCUUUUUCAACAUUUUCCUCGGACGCGGUCUUUCCGAGGCUUAUCCAUU… | 1760 nt | 0.5341 | |
| GCCCCUCACCAACAUGGCCGCGGGCUGGAAGUGCGCAUGAGCAGCUGUC… | 1807 nt | 0.5440 | |
| GCCCCUCACCAACAUGGCCGCGGGCUGGAAGUGCGCAUGAGCAGCUGUC… | 1776 nt | 0.5434 |
This gene encodes a member of the basic helix-loop-helix leucine zipper family, and can function as a cellular transcription factor. The encoded protein can activate transcription through pyrimidine-rich initiator (Inr) elements and E-box motifs. This gene has been linked to familial combined hyperlipidemia (FCHL). Alternative splicing of this gene results in multiple transcript variants. A related pseudogene has been defined on chromosome 21. [provided by RefSeq, Feb 2013]
A study in humans demonstrated that the USF1 exhibits statistically significant rhythmic expression in blood, making it a candidate mRNA marker for estimating blood deposition time [Lech et al. DOI:10.1016/J.Fsigen.2015.12.008]. In a separate human study, the USF1 was highly expressed in the peripheral blood of sepsis patients compared to healthy controls and was expressed in monocyte, NK-T, and B cell lines, with its expression positively correlated with survival rate, indicating its role as a transcription factor correlated with sepsis prognosis [Liu et al. DOI:10.0000000000002072].