This family consists of three different eukaryotic proteins (mortality factor 4 (MORF4/MRG15), male-specific lethal 3(MSL-3) and ESA1-associated factor 3(EAF3)). It is thought that the MRG family is involved in transcriptional regulation via histone acetylation [1][2]. It contains 2 chromo domains and a leucine zipper motif [3].

1: Conservation of the MORF4 related gene family: identification of a new chromo domain subfamily and novel protein motif. Bertram MJ, Pereira-Smith OM; Gene 2001;266:111-121. PMID:11290425

2: The yeast NuA4 and Drosophila MSL complexes contain homologous subunits important for transcription regulation. Eisen A, Utley RT, Nourani A, Allard S, Schmidt P, Lane WS, Lucchesi JC, Cote J; J Biol Chem 2001;276:3484-3491. PMID:11036083

3: Alp13, an MRG family protein, is a component of fission yeast Clr6 histone deacetylase required for genomic integrity. Nakayama J, Xiao G, Noma K, Malikzay A, Bjerling P, Ekwall K, Kobayashi R, Grewal SI; EMBO J 2003;22:2776-2787. PMID:12773392