NRF-2 transcription factor is essential in promoting human Tomm70 gene expression.
TOMM70 is a subunit of the outer mitochondrial membrane translocase that plays a major role as a receptor of hydrophobic pre-proteins targeted to the mitochondria. We report the presence of two nuclear respiratory factor 2 (NRF-2) binding motifs in the 5'-flanking region of the human Tomm70 gene and establish their essential role for promoter activity by using reporter assays in HeLa cells. We show that both NRF-2 binding sites are functional and present evidence that interactions between these sites and a CpG island contribute to expression. Mobility shift assays show that these NRF-2 sites are specifically recognized by NRF-2 present in HeLa nuclear extracts.
Blesa
José R
JR
Fundación Valenciana de Investigaciones Biomédicas, Instituto de Investigaciones Citológicas, Amadeo de Saboya, 4, 46010 Valencia, Spain.
Hernández
José M
JM
Hernández-Yago
José
J