Cytosolic inhibitor of Nrf2, INrf 2, INrf2, Keap 1, KEAP1, KEAP1_HUMAN, Kelch like ECH associated protein 1, Kelch like protein 19, Kelch-like ECH-associated protein 1, Kelch-like protein 19, KIAA0132, KLHL 19, KLHL19, MGC10630, MGC1114, MGC20887, MGC4407, MGC9454.
Retains NFE2L2/NRF2 in the cytosol. Functions as substrate adapter protein for the E3 ubiquitin ligase complex formed by CUL3 and RBX1. Targets NFE2L2/NRF2 for ubiquitination and degradation by the proteasome, thus resulting in the suppression of its transcriptional activity and the repression of antioxidant response element-mediated detoxifying enzyme gene expression. May also retain BPTF in the cytosol. Targets PGAM5 for ubiquitination and degradation by the proteasome.