This entry represents the alkaline phosphatase-like domain of PglZ, a key component of BREX (bacteriophage exclusion) systems that provide immunity against bacteriophages. PglZ is part of type 2 BREX systems, previously called the phage growth limita ...
This entry represents the alkaline phosphatase-like domain of PglZ, a key component of BREX (bacteriophage exclusion) systems that provide immunity against bacteriophages. PglZ is part of type 2 BREX systems, previously called the phage growth limitation (Pgl) system, which confers protection against bacteriophage phiC31. The system allows one cycle of phage infection, but subsequent cycles are impaired. PglZ likely functions as an antitoxin component of a type II toxin-antitoxin system, inhibiting the toxic activity of its cognate toxin PglX. Conserved aspartate residues (e.g., D535 and D694 in Streptomyces coelicolor PglZ) are essential for function, while the C-terminal region (approximately residues 835-974) is dispensable for phage resistance and antitoxin activity. This family is a member of the Alkaline phosphatase clan.
This domain receives the signal from the sensor partner in bacterial two-component systems. It is usually found N-terminal to a DNA binding effector domain.
