This domain is found in MORC6 proteins in eukaryotes. Arabidopsis microrchidia (MORC) ATPase family proteins are conserved among plants and animals and are involved in transcriptional silencing. In Arabidopsis, MORC6/DMS11 was reported to function in the condensation of pericentromeric heterochromatin, thereby facilitating transcriptional silencing [1]. Further studies demonstrate that MORC6 and its homologs MORC1 and MORC2 form a complex which associates with SUVH9, required for Pol V occupancy in the RdDM (RNA-directed DNA methylation) pathway [2].

1: Two Components of the RNA-Directed DNA Methylation Pathway Associate with MORC6 and Silence Loci Targeted by MORC6 in Arabidopsis. Liu ZW, Zhou JX, Huang HW, Li YQ, Shao CR, Li L, Cai T, Chen S, He XJ; PLoS Genet. 2016;12:e1006026. PMID:27171427

2: Mouse MORC3 is a GHKL ATPase that localizes to H3K4me3 marked chromatin. Li S, Yen L, Pastor WA, Johnston JB, Du J, Shew CJ, Liu W, Ho J, Stender B, Clark AT, Burlingame AL, Daxinger L, Patel DJ, Jacobsen SE; Proc Natl Acad Sci U S A. 2016;113:E5108-E5116. PMID:27528681