Protein tyrosine phosphatase type IVA 2 (PTP-IVa2), also known as protein-tyrosine phosphatase of regenerating liver 2 (PRL-2), stimulates progression from G1 into S phase during mitosis and promotes tumors. It regulates tumor cell migration and invasion through an ERK-dependent signaling pathway. Its overexpression correlates with breast tumor formation and progression. PRL-2 is a member of the PTP-IVa/PRL family of small, prenylated phosphatases that are the most oncogenic of all PTPs. PRLs associate with magnesium transporters of the cyclin M (CNNM) family, which results in increased intracellular magnesium levels that promote oncogenic transformation.
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.",