Protein Phosphatase 1, Regulatory Subunit 3A Proteine (PPP1R3A)

Mouse (Murine) Protein Phosphatase 1, Regulatory Subunit 3A (PPP1R3A) Interaktionspartner

1. Mice lacking Ppp1r3a are protected against pressure-overload heart failure. Condition-specific cardiac regulatory gene networks identify disease-driven changes in local and global topology and pathway organization, illuminating Ppp1r3a as a novel predicted heart failure regulator.

2. results show that dysfunction of subunit PPP1R3A of protein phosphatase 1 leads to weight gain, increased fat deposition and insulin resistance

3. Mice in which human PPP1R3A C1984DeltaAG replaced mouse PP1R3A had decreased muscle glycogen levels because failure of the truncated mutant to bind glycogen & colocalize with glycogen synthase (GS) decreased GS & increased glycogen phosphorylase activity.

4. Backcrossing of G(M)-/- mice onto two different genetic backgrounds gave rise to lean, glucose-tolerant, insulin-sensitive G(M)-/- mice indicating that at least one variant gene,is required for the development of the prediabetic phenotype of obese mice.

5. Disruption of the Ppp1r3a gene does not result in either fat deposition or insulin resistance, but PPP1r3a is essential for control of glycogen metabolism by exercise.

Human Protein Phosphatase 1, Regulatory Subunit 3A (PPP1R3A) Interaktionspartner

1. Genome-wide genotyping study and gene expression measurements of healthy and failing human hearts revealed important regulators and cardiac expression quantitative trait loci. PPP1R3A emerges as a regulator whose network connectivity changes significantly between health and disease. RNA sequencing after PPP1R3A knockdown validates network-based predictions and establish PPP1R3A as a central regulator in heart failure.

2. Variant in PPP1R3A is associated with type 2 diabetes.

3. In the univariate analyses, TP53, PPP1R3A, and KMT2B were significantly more frequently mutated in interval cancers than in screen-detected cancers.

4. results demonstrate that hScrib acts as a scaffold to integrate the control of the PP1gamma and ERK signaling pathways and explains how disruption of hScrib localisation can contribute towards the development of human malignancy

5. A joint effect between the Asp905 and BMI increases the risk of type 2 diabetes, and Asp905Tyr and ARE polymorphism of PPP1R3 gene are not the major diabetogenic gene variants in Chinese population.

6. We describe a family in which five individuals with severe insulin resistance, but no unaffected family members, were compound heterozygous with respect to frameshift/premature stop mutations in two unlinked genes, PPARG and PPP1R3A

7. G(M) promotes glycogen storage and inversely regulates glycogen synthase and glycogen phosphorylase activities, while, specifically, synthase phosphatase activity of G(M)-PP1 is inhibited by glycogen.

8. Among the largest cohort of nondiabetic subjects (Caucasian, n = 112), the presence of the deletion allele (ARE-2) was associated with insulin resistance and hyperandrogenemia.

9. Inactivation of PPP1R3 gene is associated with tumor progression and metastasis of colorectal cancers

10. PPP1R3A C1984DeltaAG (stop codon 668) isthe 1st prevalent mutation that directly impairs glycogen synthesis & decreases glycogen levels in human skeletal muscle. It is present in approximately 1 in 70 UK whites.