protein tyrosine phosphatase-like domain of paladin, repeat 2
Paladin is a putative phosphatase, which in mouse is expressed in endothelial cells during embryonic development and in arterial smooth muscle cells in adults. It has been suggested to be an antiphosphatase that regulates the activity of specific neural crest regulatory factors and thus, modulates neural crest cell formation and migration. Paladin contains two tyrosine-protein phosphatase domains. This model represents repeat 2.
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.",