The function of MID2 (midline 2, Ensembl gene identifier ENSG00000080561) is as follows. E3 ubiquitin ligase that plays a role in microtubule stabilization. Mediates the 'Lys-48'-linked polyubiquitination of LRRK2 to drive its localization to microtubules and its proteasomal degradation in neurons. This ubiquitination inhibits LRRK2 kinase activation by RAB29 (PubMed:35266954). {ECO:0000269|PubMed:35266954, ECO:0000303|PubMed:24115387}.