Related Experiment Video
Updated: May 30, 2026

05:31
Purification and Visualization of Lipopolysaccharide from Gram-negative Bacteria by Hot Aqueous-phenol Extraction
Published on: May 28, 2012
[Characterization of Budvicia aquatica lipopolysaccharides]
Summary
Researchers isolated lipopolysaccharides (LPS) from six Budvicia aquatica strains, revealing three distinct LPS chemotypes and demonstrating immunochemical heterogeneity within this novel Enterobacteriaceae species.
Area of Science:
- Microbiology
- Biochemistry
- Immunology
Context:
- Budvicia aquatica represents a newly identified species within the Enterobacteriaceae family.
- Lipopolysaccharides (LPS) are crucial outer membrane components of Gram-negative bacteria, playing roles in structure, virulence, and host immune response.
Purpose:
- To isolate and characterize lipopolysaccharides (LPS) from six strains of the novel species Budvicia aquatica.
- To determine the yield, monosaccharide composition, and serological properties of B. aquatica LPS.
- To investigate the immunochemical heterogeneity within the B. aquatica species.
Summary:
- Lipopolysaccharides (LPS) were successfully isolated from six Budvicia aquatica strains, with yields varying from 0.9% to 7.0% of cell dry weight.
- Analysis of monosaccharide composition categorized the LPS into three distinct groups.
- Serological studies revealed immunochemical heterogeneity, with LPS interacting only in homologous systems and showing no cross-reactivity with heterologous antisera, indicating unique antigenic profiles.
Impact:
- This study provides the first detailed characterization of LPS from B. aquatica, contributing to the understanding of this new species.
- The findings highlight the structural and antigenic diversity of LPS within B. aquatica, which has implications for bacterial classification and serotyping.
- Establishing reference data for B. aquatica LPS is essential for future research on its biological roles and potential interactions with host immune systems.
More Related Videos
Related Concept Videos
Formation of Lipopolysaccharides
Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin, triggering...
Biosynthesis 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...
Biosynthesis of Polysaccharides
Polysaccharides such as glycogen and starch are synthesized from nucleoside diphosphate sugars, primarily uridine diphosphate glucose (UDPG) and adenosine diphosphate glucose (ADPG). These activated glucose donors act as key intermediates in carbohydrate metabolism and biosynthesis. UDPG primarily involves glycogen synthesis in animals and many bacteria, while ADPG plays a fundamental role in starch synthesis in plants and certain bacteria.UDPG is formed when glucose-1-phosphate reacts with...
Surface Appendages of Archaea
Archaeal surface appendages are highly specialized structures essential for environmental adaptation, encompassing roles in adhesion, biofilm formation, and motility. Among these appendages, pili and archaella stand out for their distinct morphologies and functionalities, enabling archaea to thrive in diverse and often extreme environments.Pili: Adhesion and Biofilm FormationPili are filamentous structures assembled from pilin protein subunits, primarily contributing to adhesion and biofilm...
Lipid Absorption
Dietary triglycerides from chyme in the duodenum are mixed with bile salts produced by the liver to emulsify fats. As a result, large droplets are broken down into smaller ones, increasing the surface area for enzymatic action. Once emulsified, pancreatic lipases hydrolyze the triglycerides into free fatty acids and monoglycerides.
These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...
These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...
Cellulose and Pectic Polysaccharides
Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the parenchyma cells of...
As a cell matures, its cell wall specializes according to its type. For example, the parenchyma cells of...

