The function of Ensembl gene identifier ENSG00000130347 (RTN4IP1, reticulon 4 interacting protein 1) is as follows. NAD(P)H oxidoreductase involved in the ubiquinone biosynthetic pathway (PubMed:37884807). Required for the O- methyltransferase activity of COQ3 (PubMed:37884807). Able to catalyze the oxidoreduction of 3-demethylubiquinone into 3-demethylubiquinol in vitro (PubMed:37884807). However, it is unclear if 3-demethylubiquinone constitutes a substrate in vivo (PubMed:37884807). May also play a role in the regulation of retinal ganglion cell (RGC) neurite outgrowth, and hence in the development of the inner retina and optic nerve (By similarity). Appears to be a potent inhibitor of regeneration following spinal cord injury (By similarity). {ECO:0000250|UniProtKB:Q924D0, ECO:0000269|PubMed:37884807}.