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Related Experiment Video

Updated: Aug 23, 2025

Pull-down of Calmodulin-binding Proteins

Pull-down of Calmodulin-binding Proteins

Published on: January 23, 2012

Calmodulin in Paramecium: Focus on Genomic Data.

Eduardo Villalobo¹, Gabriel Gutiérrez², Antonio Villalobo³

¹Facultad de Biología, Departamento de Microbiología, Universidad de Sevilla, Avenida Reina Mercedes 6, E-41012 Sevilla, Spain.

|October 27, 2022

Summary

Calmodulin (CaM) in *Paramecium* regulates ciliary function and enzyme activity. Mutations in CaM disrupt cell locomotion and exocytosis, highlighting its critical role in these ciliates.

Keywords:

Paramecium calcium calmodulin cell signaling ciliate

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Ratiometric Calcium Imaging of Individual Neurons in Behaving Caenorhabditis Elegans

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Published on: February 7, 2018

Area of Science:

Cellular Biology
Biochemistry
Genomics

Background:

Calcium ions (Ca²⁺) act as crucial second messengers in cellular signaling pathways.
Ca²⁺-binding proteins, such as calmodulin (CaM), are essential for transducing Ca²⁺ signals.
Calmodulin is a highly conserved, ubiquitous Ca²⁺-binding protein found across eukaryotes.

Purpose of the Study:

To review and consolidate existing information on calmodulin in the ciliate *Paramecium*.
To focus on the genomic aspects and functional roles of *Paramecium* calmodulin.
To understand the implications of calmodulin mutations in *Paramecium*.

Main Methods:

Literature review of calmodulin in *Paramecium*.
Analysis of genomic data related to calmodulin.
Examination of the functional consequences of calmodulin mutations.

Main Results:

Mature *Paramecium* calmodulin is a 148 amino acid protein encoded by a single gene.
Calmodulin is localized in *Paramecium* and regulates cilia function and enzyme activity.
Mutations in *Paramecium* calmodulin lead to defects in locomotion and exocytosis.

Conclusions:

Calmodulin plays a vital role in the physiology of *Paramecium*, particularly in ciliary function, locomotion, and exocytosis.
Genomic data supports the conserved nature and specific roles of calmodulin in this ciliate model organism.
Further research into *Paramecium* calmodulin can provide insights into fundamental cellular processes.