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Hydrogen peroxide redistributes the localization of protein phosphatase methylesterase 1.

08:00 EDT 16th October 2018 | BioPortfolio

Summary of "Hydrogen peroxide redistributes the localization of protein phosphatase methylesterase 1."

Protein phosphatase methylesterase-1 (PME-1) is a serine hydrolase that catalyzes protein phosphatase 2A (PP2A) demethylation and negatively regulates its activity. PME-1 is compartmentalized within cells to precisely control the demethylation of PP2A. This study investigated the localization of PME-1 in human fibroblast cells (HDF) under oxidative stress.

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Name: Life sciences
ISSN: 1879-0631
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Medical and Biotech [MESH] Definitions

A subtype of non-receptor protein tyrosine phosphatase that is closely-related to PROTEIN TYROSINE PHOSPHATASE, NON-RECEPTOR TYPE 1. Alternative splicing of the mRNA for this phosphatase results in the production at two gene products, one of which includes a C-terminal nuclear localization domain that may be involved in the transport of the protein to the CELL NUCLEUS. Although initially referred to as T-cell protein tyrosine phosphatase the expression of this subtype occurs widely.

One of four major classes of mammalian serine/threonine specific protein phosphatases. Protein phosphatase 2C is a monomeric enzyme about 42 kDa in size. It shows broad substrate specificity dependent on divalent cations (mainly manganese and magnesium). Three isozymes are known in mammals: PP2C -alpha, -beta and -gamma. In yeast, there are four PP2C homologues: phosphatase PTC1 that have weak tyrosine phosphatase activity, phosphatase PTC2, phosphatase PTC3, and PTC4. Isozymes of PP2C also occur in Arabidopsis thaliana where the kinase-associated protein phosphatase (KAPP) containing a C-terminal PP2C domain, dephosphorylates Ser/Thr receptor-like kinase RLK5.

A phosphoprotein phosphatase subtype that is comprised of a catalytic subunit and two different regulatory subunits. At least two genes encode isoforms of the protein phosphatase catalytic subunit, while several isoforms of regulatory subunits exist due to the presence of multiple genes and the alternative splicing of their mRNAs. Protein phosphatase 2 acts on a broad variety of cellular proteins and may play a role as a regulator of intracellular signaling processes.

An oxidoreductase that catalyzes the reaction between superoxide anions and hydrogen to yield molecular oxygen and hydrogen peroxide. The enzyme protects the cell against dangerous levels of superoxide. EC 1.15.1.1.

An enzyme oxidizing peptidyl-lysyl-peptide in the presence of water & molecular oxygen to yield peptidyl-allysyl-peptide plus ammonia & hydrogen peroxide. EC 1.4.3.13.

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