Related Experiment Video
Updated: Jul 31, 2026

07:15
Invasion of Human Cells by a Bacterial Pathogen
Published on: March 21, 2011
Staphylococcus schleiferi subsp. schleiferi expresses a fibronectin-binding protein
S J Peacock1, G Lina, J Etienne
1Department of Microbiology, Moyne Institute of Preventive Medicine, Trinity College, Dublin 2, Ireland. sharon.peacock@ndp.ox.ac.uk
Infection and Immunity
|July 23, 1999
Summary
Staphylococcus schleiferi subsp. schleiferi causes hospital infections through unknown mechanisms. This study found evidence of a fibronectin-binding protein contributing to its pathogenicity.
Area of Science:
- Microbiology
- Infectious Diseases
- Molecular Biology
Background:
- Staphylococcus schleiferi subsp. schleiferi is a known cause of nosocomial infections.
- The specific pathogenic mechanisms of this bacterium remain largely uncharacterized.
Purpose of the Study:
- To investigate the molecular basis of Staphylococcus schleiferi subsp. schleiferi pathogenicity.
- To identify potential virulence factors expressed by this bacterial species.
Main Methods:
- Phenotypic analysis to assess bacterial characteristics.
- Genotypic analysis to identify relevant genes.
- Investigating the expression of cell wall-anchored proteins.
Main Results:
- Evidence for the expression of a cell wall-anchored protein was identified.
- This protein has fibronectin-binding capabilities.
- The findings provide insight into the pathogenic potential of Staphylococcus schleiferi.
Conclusions:
- Staphylococcus schleiferi subsp. schleiferi expresses a fibronectin-binding protein.
- This protein is a likely contributor to the pathogenesis of nosocomial infections caused by this bacterium.
More Related Videos
Related Concept Videos
Fibronectins Connect Cells with ECM
Fibronectin is an adhesive glycoprotein present in the extracellular matrix of embryogenic and adult tissue. These molecules primarily aid in regulating cell motility and attachment. A fibronectin molecule is composed of two identical polypeptide chains attached to each other by a pair of disulfide bonds at the C-terminal.
Both proteoglycans and collagen are attached to fibronectin proteins, which, in turn, are attached to integrin proteins. These integrin proteins interact with transmembrane...
Both proteoglycans and collagen are attached to fibronectin proteins, which, in turn, are attached to integrin proteins. These integrin proteins interact with transmembrane...
Selectins
Cell adhesion is an essential aspect of multicellularity. While stable cell interactions usually occur between cells of the same type, transient cell interactions occur between cells of different tissue types, such as between neutrophils and endothelial cells. Selectins are one class of cell adhesion molecules (CAMs) that bind carbohydrate ligands to form transient cell adhesion. They are rod-like proteins with a long extracellular part of variable length ending with the lectin domain, which...
Fibrous Proteins
Fibrous proteins are either long and narrow proteins or assemble to form long and thin structures. They contain repetitive units and usually consist of either alpha helices or beta sheets and, in rare cases, a mix of both. The amino acids in the primary structure often consist of repeating amino acid sequences. The role of fibrous proteins is primarily structural. Many are located in the extracellular matrix and are present in connective tissues to impart strength and joint mobility. They are...
Fimbriae, Pili, and Axial Filaments
Fimbriae and pili are specialized bacterial surface structures that play pivotal roles in adhesion, genetic exchange, and motility. Composed primarily of pilin protein, these hairlike appendages are crucial for bacterial survival and pathogenicity in various environments.Fimbriae: Adhesion and PathogenicityFimbriae are fine, filamentous structures measuring 2–10 nanometers in diameter and are densely distributed on the bacterial cell surface. They facilitate bacterial adhesion to abiotic...
Determinants of Bacterial Pathogenicity and Virulence
Pathogenic bacteria employ a variety of strategies to establish infections, including the secretion of extracellular enzymes that act as potent virulence factors. These enzymes facilitate bacterial colonization of host tissues and help evade immune surveillance. By targeting structural components of host tissues and interfering with immune mechanisms, these enzymes play a pivotal role in disease progression.Extracellular Enzymes Facilitating Tissue Invasion: Several bacterial pathogens secrete...
Staphylococcal Skin Infections
Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...

