This domain is found at the C-terminal of MIER1 and MIER3. MIER1 is a transcriptional repressor that regulates the expression of a number of genes including SP1 target genes, recruiting histone deacetylase 1 (HDAC1) through its ELM2 domain. It has two isoforms, alpha and beta, which differ in their C-terminal domains, both of them being able to interact with HDAC1. The gene encoding MIER3 has been identified as a candidate cancer susceptibility gene [3]. MIER1 and 3 share two regions of high homology, one at the N-terminal and the second at the C-terminal, represented in this entry, which includes a short region located immediately downstream of the SANT extension that is 84% identical [1,2].

1: Human MI-ER1 alpha and beta function as transcriptional repressors by recruitment of histone deacetylase 1 to their conserved ELM2 domain. Ding Z, Gillespie LL, Paterno GD; Mol Cell Biol. 2003;23:250-258. PMID:12482978

2: Differential HDAC1 and 2 Recruitment by Members of the MIER Family. Derwish R, Paterno GD, Gillespie LL; PLoS One. 2017;12:e0169338. PMID:28046085

3: Rat Mcs1b is concordant to the genome-wide association-identified breast cancer risk locus at human 5q11.2 and MIER3 is a candidate cancer susceptibility gene. denDekker AD, Xu X, Vaughn MD, Puckett AH, Gardner LL, Lambring CJ, Deschenes L, Samuelson DJ; Cancer Res. 2012;72:6002-6012. PMID:22993404