Phosphatase Family MDP1

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Phosphatase Classification: Superfamily HAD: Family MDP1

This family typically has one member in unikonts (MDP1 in human), though it is lost from Drosophila and C. elegans. It has been reported as a putative tyrosine phosphatase [1]. However, a later study reported that it is a protein-fructosamine-6-phosphatase potentially involved in glycation repair [2]. This activity was 100-fold higher than its tyrosine phosphatase activity, and MDP1 has not been shown to have activity on phosphopeptides [3].

References

  1. Peisach E, Selengut JD, Dunaway-Mariano D, and Allen KN. X-ray crystal structure of the hypothetical phosphotyrosine phosphatase MDP-1 of the haloacid dehalogenase superfamily. Biochemistry. 2004 Oct 12;43(40):12770-9. DOI:10.1021/bi0490688 | PubMed ID:15461449 | HubMed [Peisach04]
  2. Fortpied J, Maliekal P, Vertommen D, and Van Schaftingen E. Magnesium-dependent phosphatase-1 is a protein-fructosamine-6-phosphatase potentially involved in glycation repair. J Biol Chem. 2006 Jul 7;281(27):18378-85. DOI:10.1074/jbc.M513208200 | PubMed ID:16670083 | HubMed [Fortpied06]
  3. Selengut JD and Levine RL. MDP-1: A novel eukaryotic magnesium-dependent phosphatase. Biochemistry. 2000 Jul 18;39(28):8315-24. DOI:10.1021/bi0005052 | PubMed ID:10889041 | HubMed [Selengut]
All Medline abstracts: PubMed | HubMed