Component of the origin recognition complex (ORC) that binds origins of replication. It has a role in both chromosomal replication and mating type transcriptional silencing. ORC binds to multiple sites within the ars1 origin of DNA replication in an ATP-independent manner. ORC is composed of six subunits. ORC interacts with cdc18, recruiting it to the ars1 origin of replication. Belongs to the ORC6 family.