Related Experiment Video
Updated: Aug 12, 2026
08:59
Defining Substrate Specificities for Lipase and Phospholipase Candidates
Published on: November 23, 2016
Dibiphytanyl ether lipids in nonthermophilic crenarchaeotes
E F DeLong1, L L King, R Massana
1Marine Science Institute, University of California, Santa Barbara 93106, USA. delong@mbari.org
Applied and Environmental Microbiology
|March 21, 1998
Summary
Nonthermophilic Crenarchaeota, found in cold environments, possess unique cyclic and acyclic dibiphytanylglycerol tetraether lipids. These archaea are a significant source of these lipids in marine plankton.
Area of Science:
- Microbiology
- Biochemistry
- Marine Biology
Background:
- The kingdom Crenarchaeota encompasses archaea inhabiting diverse environments, including low-temperature habitats.
- Understanding the biochemical composition of these organisms is crucial for ecological studies.
Purpose of the Study:
- To investigate the lipid composition of nonthermophilic crenarchaeotes.
- To identify specific lipid types present in these archaea from various low-temperature environments.
Main Methods:
- Lipid analyses were performed on samples of nonthermophilic crenarchaeotes.
- Characterization of identified lipids using advanced analytical techniques.
Main Results:
- Lipid analyses revealed the presence of cyclic and acyclic dibiphytanylglycerol tetraether lipids.
- These tetraether lipids were identified in nonthermophilic crenarchaeotes from low-temperature environments.
Conclusions:
- Nonthermophilic crenarchaeotes possess unique tetraether lipids.
- These archaea represent a major biological source of tetraether lipids within marine planktonic ecosystems.
More Related Videos
10:59Enrichment of Bacterial Lipoproteins and Preparation of N-terminal Lipopeptides for Structural Determination by Mass Spectrometry
Published on: May 21, 2018
08:56Quantitative Analysis of the Cellular Lipidome of Saccharomyces Cerevisiae Using Liquid Chromatography Coupled with Tandem Mass Spectrometry
Published on: March 8, 2020
Related Concept Videos
01:35Asymmetric Lipid Bilayer
Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
01:32Lipids as Anchors
In the plasma membrane, the lipids forming the bilayer can also act as an anchor to tether proteins to the membrane. The three main types of lipid anchors found in eukaryotes are – prenyl groups, fatty acyl groups, and glycosylphosphatidylinositol or GPI groups. Prenyl and fatty acyl groups act as anchors on the cytosolic surface of the membrane, whereas GPI anchors proteins on the extracellular side.
The carboxy-terminal of most of the prenylated proteins, such as Ras proteins, contains the...
The carboxy-terminal of most of the prenylated proteins, such as Ras proteins, contains the...
01:27Plasma Membrane in Bacteria and Archaea
The plasma membrane is an essential cellular structure responsible for maintaining cellular integrity and regulating the selective transport of molecules. While bacteria and archaea share the fundamental function of plasma membranes, their structural and molecular differences reflect adaptations to distinct ecological and physiological challenges.Bacterial Plasma MembranesBacterial plasma membranes are predominantly composed of phospholipids with fatty acid chains ester-linked to a glycerol...
01:29Biosynthesis of Lipids
Microbial membranes exhibit remarkable diversity in lipid composition, reflecting evolutionary adaptations to various environmental conditions. The three domains of life—Bacteria, Archaea, and Eukarya—synthesize membrane lipids through distinct biosynthetic pathways, leading to fundamental structural differences that impact membrane stability, function, and adaptability.Fatty Acid-Based Lipids in Bacteria and EukaryaBacteria and eukaryotes share a common fatty acid biosynthesis pathway, which...
01:27Diversity of Archaea III
Crenarchaeota, a prominent phylum of Archaea, is remarkable for its ability to thrive in extreme environments characterized by high temperatures and acidity. These microorganisms inhabit sulfuric hot springs, volcanic systems, and submarine hydrothermal vents, where temperatures often exceed 100°C. The unique adaptations of Crenarchaeota not only allow survival under such extreme conditions but also provide insights into the mechanisms of life in primordial Earth-like environments.Morphological...
01:29Archaeal Cell Wall
Archaeal cell walls are structurally and compositionally distinct from their bacterial counterparts, lacking the characteristic peptidoglycan layer found in most bacteria. Instead, archaeal cell walls exhibit remarkable diversity, utilizing materials such as pseudomurein, polysaccharides, and proteins to construct their protective outer layers. This structural flexibility is closely tied to archaea's ecological adaptability.S-Layers: The Common Archaeal Cell WallThe S-layer is the most...