dimerization domain of Male-specific-Lethal 1
MSL1_dimer is the short coiled dimerization domain of higher eukaryotic MSL1, part of the MSL or Male-Specific Lethal complex. This complex regulates the dosage compensation of the male X chromosome in Drosophila and other eukaryotes. The structure of the MSL1/MSL2 core shows that two MSL2 subunits bind to a dimer formed by two molecules of MSL1. MSL11 is a substrate for MSL2 E3 ubiquitin ligase activity.