| Description | This family represents the Lon-like protease BrxL, including BrxL from Bacillus cereus, which is part of a type 1 BREX system. BREX systems (bacteriophage exclusion) provide immunity against bacteriophage, a system that allows phage adsorption but prevents phage DNA replication, without degradation of the phage DNA [ , ]. Methylation of bacterial DNA by PglX probably guides self/non-self discrimination. When the brxA-brxB-brxC-pglX and pglZ-brxL operons are transformed into a susceptible B.subtilis strain (BEST7003) they confer resistance to bacteriophages SPbeta, SP16, Zeta, phi3T and SP02 and partial protection to phages SP01 and SP82G (these include lytic and temperate phage). | Name | Lon-like protease BrxL |
| Short Name | BrxL | Type | Family |
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