Glycerophosphodiester phosphodiesterase domain of uncharacterized bacterial homologs of mammalian glycerophosphodiester phosphodiesterase GDE4
This subfamily corresponds to the glycerophosphodiester phosphodiesterase domain (GDPD) present in uncharacterized bacterial homologs of mammalian GDE4, a transmembrane protein whose cellular function has not been elucidated yet.
Comment:The catalytic mechanism of glycerophosphodiester phosphodiesterases is based on the metal ion-dependent general acid-base reaction.
Comment:Based on structure evidence and site-directed mutagenesis of Thermoanaerobacter tengcongensis glycerophosphodiester phosphodiesterase, the catalytic site consists of two conserved histidine residues which serve as general acid and general base in catalyzing the hydrolysis of the 3'-5' phosphodiester bond.
Jiyao W et al.(2023). "The conserved domain database in 2023.",