Proteomics

Dataset Information

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Characterization of phosphohistidine phosphatase 1-induced changes in the mouse liver proteome

ABSTRACT: Phosphohistidine signaling in mammalian biological systems has not been well characterized. In this study, we investigated the impact of phosphohistidine phosphatase 1 (PHPT1) expression on the hepatic proteome profile in vivo. PHPT1 overexpression was carried out using adenoviral-based transgene delivery for liver-specific overexpression of PHPT1 while a heterozygous knockout was used as a model of PHPT1 deficiency. These two models were characterized using mass spectrometry-based proteomics and label-free relative quantitation. In conjunction with bioinformatic analysis, PHPT1-induced changes in several key proteins and pathways were identified in the liver. Implementation of these models in future studies will lead to far greater insight into the role of phosphohistidine signaling and PHPT1 regulation in mammalian cells.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Liver

SUBMITTER: Daniel Martin  

LAB HEAD: Stanley Stevens Jr

PROVIDER: PXD008323 | Pride | 2020-07-29

REPOSITORIES: Pride

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DM_F1Livers_1.raw Raw
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Publications

Structural and activity characterization of human PHPT1 after oxidative modification.

Martin Daniel R DR   Dutta Priyanka P   Mahajan Shikha S   Varma Sameer S   Stevens Stanley M SM  

Scientific reports 20160401

Phosphohistidine phosphatase 1 (PHPT1), the only known phosphohistidine phosphatase in mammals, regulates phosphohistidine levels of several proteins including those involved in signaling, lipid metabolism, and potassium ion transport. While the high-resolution structure of human PHPT1 (hPHPT1) is available and residues important for substrate binding and catalytic activity have been reported, little is known about post-translational modifications that modulate hPHPT1 activity. Here we character  ...[more]

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