Peptides that specifically bound to biotin-labeled MAARS transcript were identified by liquid chromatography-mass spectrometry (LC-MS/MS) analysis, capturing HuR (Hu antigen R, also known as ELAVL1, Embryonic Lethal, Abnormal Vision, Drosophila-Like 1) as a MAARS-binding protein (Fig. 4b and Supplementary Fig. 5a). This evidence concerns the gene ELAVL1 and visual perception.