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Published on: July 31, 2019
Profiling the Trypanosoma cruzi phosphoproteome.
Fabricio K Marchini1, Lyris M F de Godoy, Rita C P Rampazzo
1Instituto Carlos Chagas, Fiocruz, Curitiba, Paraná, Brazil.
Plos One
|October 4, 2011
Summary
This study maps the protein phosphorylation sites in Trypanosoma cruzi, revealing key insights into parasite signaling pathways. The comprehensive phosphoproteome data enhances understanding of cell regulation in Kinetoplastida species.
Area of Science:
- Proteomics
- Cellular signaling
- Parasitology
Background:
- Protein phosphorylation is vital for cellular processes and signal transduction.
- Understanding phosphorylation in protozoan parasites like Trypanosoma cruzi is limited.
- Characterizing the phosphoproteome aids in deciphering molecular-level cell signaling control.
Purpose of the Study:
- To comprehensively characterize the phosphoproteome of Trypanosoma cruzi.
- To identify phosphorylation sites and motifs during parasite differentiation.
- To infer protein kinase regulation of biological functions.
Main Methods:
- Mass spectrometry (LTQ-Orbitrap) was used for phosphoproteome analysis.
- Phosphopeptide enrichment was performed using TiO(2) chromatography.
- Protein samples were collected during Trypanosoma cruzi metacyclogenesis.
Main Results:
- Identified 1,671 proteins, including 753 phosphoproteins with 2,572 phosphorylation sites.
- Serine (84.1%), threonine (14.9%), and tyrosine (1.0%) were the main phosphorylated residues.
- Reported consensus phosphorylation sequence motifs and inferred kinase-regulated functions.
Conclusions:
- This is the most comprehensive phosphoproteome dataset for Kinetoplastida species to date.
- The data allows inference of biological information and protein kinase activity.
- The findings are publicly available in repositories for scientific access.
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