Related Experiment Video
Updated: Apr 21, 2026

09:37
Helminth Collection and Identification from Wildlife
Published on: December 14, 2013
15.9K
A passion for parasites.
1From the Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205 penglund@jhmi.edu.
The Journal of Biological Chemistry
|October 23, 2014
Summary
Researchers explored kinetoplast DNA (kDNA), a unique mitochondrial genome in parasites. This study delves into the complex structure and replication of kDNA, crucial for understanding parasitic diseases.
Area of Science:
- Molecular Biology
- Parasitology
Background:
- The study focuses on kinetoplast DNA (kDNA), the mitochondrial genome of trypanosomatids.
- kDNA is a complex network of interlocked DNA rings with largely unknown properties.
Observation:
- The author encountered kDNA through a paper in the Journal of Molecular Biology.
- Initial observations noted the unique structure and potential importance of kDNA.
Findings:
- kDNA replication was identified as a challenging yet significant area of research.
- The project aimed to explore uncharted territory in DNA replication.
Implications:
- Understanding kDNA is vital as parasites harboring it affect large populations in tropical regions.
- This research has the potential to contribute to combating parasitic diseases.
Related Concept Videos
Diversity of Protists I
2.3K
Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
2.3K
Microbial Interactions: Parasitism
94
Parasitism is a form of microbial interaction in which parasitic microbes exploit a host organism for nutrients and shelter, often at the host's expense. Unlike mutualistic relationships, where both organisms benefit, parasitism benefits only the parasite and harms the host.Classification of ParasitesMicrobial parasites are broadly classified based on their location relative to the host.Ectoparasites remain on the host’s surface, such as the skin or outer tissues, drawing nutrients...
94
Diversity of Protists II
2.2K
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
2.2K
Overview of Protists
3.3K
Protists are diverse eukaryotic microorganisms that lack the specialized tissues of plants and animals and the chitinous cell walls of fungi. Their early divergence within Eukarya resulted in structural, functional, and ecological diversity. They are classified into supergroups such as Archaeplastida, Excavata, Amoebozoa, Rhizaria, Alveolata, and Stramenopiles, determined through genetic analysis and structural similarities.Structural and Functional AdaptationsProtists have various adaptations...
3.3K
Diversity of Protists IV
2.1K
Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...
2.1K
Epiphytes, Parasites, and Carnivores
12.6K
Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the...
12.6K

