BAH, or Bromo Adjacent Homology domain, as present in animal homologs of Saccharomyces cerevisiae Orc1p. Orc1 is part of the Yeast Sir1-origin recognition complex. The Orc1p BAH doman functions in epigenetic silencing. In vertebrates, a similar ORC protein complex exists, which has been shown essential for DNA replication in Xenopus laevis. BAH domains are found in a variety of proteins playing roles in transcriptional silencing and the remodeling of chromatin. It is assumed that in most or all of these instances the BAH domain mediates protein-protein interactions.
Jiyao W et al.(2023). "The conserved domain database in 2023.",