Related Experiment Video
Updated: Jul 4, 2026

A Mass Spectrometry-Based Approach to Identify Phosphoprotein Phosphatases and their Interactors
Published on: April 29, 2022
Protozoan protein tyrosine phosphatases
Alexandra V Andreeva1, Mikhail A Kutuzov
1Department of Pharmacology (MC 868), University of Illinois at Chicago, Chicago, IL 60612, USA. aandrev@uic.edu
Protein tyrosine phosphatases (PTPs) in parasitic protozoa exhibit significant evolutionary divergence from human PTPs. This makes parasitic PTPs promising targets for developing specific drugs with minimal host side effects.
Area of Science:
- Parasitology
- Molecular Biology
- Evolutionary Biology
Background:
- Protein tyrosine phosphatases (PTPs) are crucial enzymes involved in cellular signaling.
- Understanding PTPs in parasitic protozoa is essential for identifying therapeutic targets.
Purpose of the Study:
- To synthesize experimental data and perform in silico analysis of PTPs in various parasitic protozoa.
- To establish a comparative and evolutionary context for these PTPs.
Main Methods:
- Review of published experimental data on parasitic protozoan PTPs.
- In silico analysis of PTP complements in Apicomplexa, kinetoplastids, and other protozoa using genomic data.
- Comparative analysis of sequence and domain structures.
Main Results:
- Distinct distribution patterns of PTP families were observed across different protozoan species.
- Protozoan PTPs show significant divergence in catalytic and flanking domains compared to mammalian homologues.
- Genomic data revealed PTP complements in Apicomplexa, kinetoplastids, and other key parasites.
Conclusions:
- Protozoan PTPs represent a distinct group from their mammalian counterparts.
- The divergence of parasitic PTPs suggests their potential as specific drug targets.
- Targeting these divergent PTPs could lead to novel antiparasitic therapies with reduced host toxicity.
Related Concept Videos
Protein Kinases and Phosphatases
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
Protein Kinases and Phosphatases
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
Phosphorylation
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
Phosphorylation
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
Amplifying Signals via Enzymatic Cascade
Phosphoinositides and PIPs
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...

