The function of MICOS10 (mitochondrial contact site and cristae organizing system subunit 10, Ensembl gene identifier ENSG00000173436) is as follows. Component of the MICOS complex, a large protein complex of the mitochondrial inner membrane that plays crucial roles in the maintenance of crista junctions, inner membrane architecture, and formation of contact sites to the outer membrane. {ECO:0000269|PubMed:22114354, ECO:0000269|PubMed:32567732, ECO:0000269|PubMed:33130824}.