Transcription factor that plays a central role in developing and mature glia (By similarity). Specifically activates expression of myelin genes, during oligodendrocyte (OL) maturation, such as DUSP15 and MYRF, thereby playing a central role in oligodendrocyte maturation and CNS myelination (By similarity). Once induced, MYRF cooperates with SOX10 to implement the myelination program (By similarity). Transcriptional activator of MITF, acting synergistically with PAX3 (PubMed:21965087). Transcriptional activator of MBP, via binding to the gene promoter (By similarity). {ECO:0000250|UniProtKB:O55170, ECO:0000250|UniProtKB:Q04888, ECO:0000269|PubMed:21965087}. This is the function of ENSG00000100146 (SOX10, SRY-box transcription factor 10).