Related Experiment Video
Updated: Nov 30, 2025

08:16
Single-Molecule Analysis of Sf9 Purified Superprocessive Kinesin-3 Family Motors
Published on: July 27, 2022
2.2K
Prey capture in protists utilizing microtubule filled processes and surface motility.
1Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, Virginia, USA.
Cytoskeleton (Hoboken, N.J.)
|November 15, 2020
Summary
Surface motility in protists, utilizing structures like flagella, is vital for capturing prey. This review highlights its importance and calls for renewed research using new molecular tools.
Area of Science:
- Protistology
- Cell Biology
- Biophysics
Background:
- Surface motility, observed in microtubule-filled protistan cell extensions, has unclear functions.
- These extensions include flagella, axopodia, actinopodia, reticulopodia, and haptonema.
- Surface motility is crucial for prey capture in many protists.
Purpose of the Study:
- To integrate literature on protistan surface motility and its role in prey capture.
- To rekindle interest in this field due to emerging molecular tools.
- To address the mechanistic understanding beyond descriptive studies.
Main Methods:
- Literature review and synthesis.
- Analysis of protistan cell extensions and motility mechanisms.
- Discussion of technical challenges and future research directions.
Main Results:
- Surface motility is essential for prey capture in diverse protists.
- Intraflagellar transport is the force transduction mechanism in Chlamydomonas gliding motility.
- Mechanistic studies are limited outside Chlamydomonas due to technical difficulties.
Conclusions:
- Surface motility is a key functional adaptation in protists for feeding.
- Further research is needed to elucidate the mechanisms across various protistan taxa.
- Emerging molecular tools promise to advance understanding of protistan surface motility.
Related Concept Videos
Microtubules in Cell Motility
4.2K
Microtubules are thick hollow cylindrical proteins that help form the cytoskeleton. Microtubules have varied roles in the cell. These filaments help form cellular appendages like cilia and flagella, which are responsible for locomotion. The cilia arise from basal bodies, separated from the main body by a membrane-like structure forming the transition zone. This zone is the gate for the entry of lipids and proteins, creating a unique composition of lipids and proteins in the ciliary membrane and...
4.2K
Intracellular Movement of Viruses and Bacteria
3.2K
Intracellular bacteria and viruses often comprise a group of highly infectious pathogens that can cause several diseases. Bacterial pathogens include those belonging to the genus Rickettsia responsible for conditions such as rocky mountain spotted fever and the Mediterranean spotted fever; Chlamydia, a genus responsible for a sexually transmitted disease; Coxiella burnetii, an agent responsible for Q fever. Viral pathogens include vaccinia—a poxvirus, and herpes simplex virus—a...
3.2K
Microtubule Associated Motor Proteins
9.4K
Eukaryotic cells have different motor proteins for transporting various cargo within the cell. These motor proteins differ based on the filament they associate with, the direction they move within the cell, and the type of cargo they transport. Motor proteins that associate with microtubules are known as microtubule-associated motor proteins. There are two families of microtubule-associated motor proteins —Kinesins and Dyneins. Both these proteins assist in the transport of cellular...
9.4K
The Movement of Organelles and Vesicles
5.5K
In eukaryotic cells, cytoskeletal filaments such as actin, microtubules, and intermediate filaments form a mesh-like cytoskeletal network. These filaments serve as tracks for transporting cellular cargo. Specialized motor proteins use the chemical energy stored in adenosine triphosphate (ATP) for this transport. During interphase, microtubules are polarized, with the plus-end towards the cell periphery and the minus-end towards the cell center. Two microtubule-associated motor proteins,...
5.5K
Mechanism of Filopodia Formation
2.8K
Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
2.8K
Phagocytosis
7.3K
Cells pull particles inward and engulf them in spherical vesicles in an energy-requiring process called endocytosis. Phagocytosis ("cellular eating") is one of three major types of endocytosis. Cells use phagocytosis to take in large objects, such as other cells (or their debris), bacteria, and even viruses.
The objective of phagocytosis is often destruction. Cells use phagocytosis to eliminate unwelcome visitors, like pathogens (e.g., viruses and bacteria). Many immune system cells,...
The objective of phagocytosis is often destruction. Cells use phagocytosis to eliminate unwelcome visitors, like pathogens (e.g., viruses and bacteria). Many immune system cells,...
7.3K

