Probable protease (By similarity). Acts as a sensor of N(6)-methyladenosine methylation on DNA (m6A): recognizes and binds m6A DNA, leading to its degradation (By similarity). The RAMA domain recognizes and binds N(6)-methyladenosine methylation on DNA (m6A). Degraded following binding to N(6)-methyladenosine methylated DNA (m6A). Belongs to the peptidase M67 family.