SRY-related HMG-box (SOX) genes encode a family of DNA-binding proteins containing a 79-amino acid HMG (high mobility group) domain that shares at least 50% sequence identity with the DNA-binding HMG box of the SRY protein (MIM 480000). SOX proteins are divided into 6 subgroups based on sequence similarity within and outside of the HMG domain. For additional background information on SOX genes, see SOX1 (MIM 602148).[supplied by OMIM, Apr 2004].
Schepers, Teasdale, Koopman: "Twenty pairs of sox: extent, homology, and nomenclature of the mouse and human sox transcription factor gene families." in: Developmental cell, Vol. 3, Issue 2, pp. 167-70, (2002) (PubMed).