dual specificity phosphatase domain of fungal dual specificity protein phosphatase PPS1-like
This subfamily contains fungal proteins with similarity to dual specificity protein phosphatase PPS1 from Saccharomyces cerevisiae, which has a role in the DNA synthesis phase of the cell cycle. As a dual specificity protein phosphatase, PPS1 functions as a protein-serine/threonine phosphatase (EC 3.1.3.16) and a protein-tyrosine-phosphatase (EC 3.1.3.48). It contains a C-terminal catalytic dual specificity phosphatase domain.
Feature 1: catalytic site [active site], 2 residue positions
Conserved feature residue pattern:C R
Evidence:
Comment:the catalytic cysteine initiates a nucleophilic attack on the phosphate group of the substrate, forming a transient phosphoenzyme intermediate and releasing the substrate dephosphorylated; the transition state is stabilized by the arginine present in the catalytic pocket
Jiyao W et al.(2023). "The conserved domain database in 2023.",