This gene encodes a transcription factor that is a member of the nuclear receptor subfamily 1. The encoded protein is a ligand-sensitive transcription factor that negatively regulates the expression of core clock proteins. In particular this protein represses the circadian clock transcription factor aryl hydrocarbon receptor nuclear translocator-like protein 1 (ARNTL). This protein may also be involved in regulating genes that function in metabolic, inflammatory and cardiovascular processes. [provided by RefSeq, Jan 2013]
Forensic Context
A study in humans identified 11 mRNA markers with statistically significant 24-hour expression rhythms in blood, including the NR1D1, for estimating blood deposition time [Lech et al. DOI:10.1016/J.Fsigen.2015.12.008]. A study in mice demonstrated that the NR1D1 is a key characteristic gene in endothelial cells and is markedly downregulated during myocardial infarction progression, as confirmed by scRNA-seq, microarray analysis, and in vivo experiments (qPCR, WB, immunofluorescence) [Mao et al. DOI:10.1016/j.bbrc.2025.151820].