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2011
A Gram-positive bacterium is a prokaryotic cell whose ▶ cell wall consists of mainly ▶ peptidoglycan and lacks the outer membrane characteristic of the Gram-negative cells. Bacteria can be divided into two major groups, called Gram positive and Gram negative.
Misha Rosenbach +3 more
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A Gram-positive bacterium is a prokaryotic cell whose ▶ cell wall consists of mainly ▶ peptidoglycan and lacks the outer membrane characteristic of the Gram-negative cells. Bacteria can be divided into two major groups, called Gram positive and Gram negative.
Misha Rosenbach +3 more
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Antimicrobial Resistance in Gram-Positive Bacteria [PDF]
The American Journal of Medicine, 2006 Gram-positive bacteria are common causes of bloodstream and other infections in hospitalized patients in the United States, and the percentage of nosocomial bloodstream infections caused by antibiotic-resistant gram-positive bacteria is increasing. Methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE) are of ...
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2001
The pneumococcus Streptococcus pneumoniae commonly grows in pairs (diplococci) but also can grow in short chains. An outer polysaccharide capsule protects the organism against phagocytosis, and pneumococcal virulence is related to the composition and size of the capsule (1). There are 90 known capsular types.
Laurel C. Preheim, Thomas S. Stalder
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The pneumococcus Streptococcus pneumoniae commonly grows in pairs (diplococci) but also can grow in short chains. An outer polysaccharide capsule protects the organism against phagocytosis, and pneumococcal virulence is related to the composition and size of the capsule (1). There are 90 known capsular types.
Laurel C. Preheim, Thomas S. Stalder
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Peptide conversations in Gram-positive bacteria
Critical Reviews in Microbiology, 2014Within Gram-positive bacteria, the expression of target genes is controlled at the population level via signaling peptides, also known as pheromones. Pheromones control a wide range of functions, including competence, virulence, and others that remain unknown.
Monnet, Véronique +2 more
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Membrane transitions in Gram-positive bacteria
Biochimica et Biophysica Acta (BBA) - Biomembranes, 1971Abstract Intact cells, membranes, and aqueous dispersion of lipids of Micrococcus lysodeikticus undergo a reversible thermotropic transition detectable by differential scanning calorimetry. The phenomenon is suggested to be a “melt” of fatty acid chains within lipid bilayers.
Joseph M. Steim, Gary B. Ashe
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Walls of Gram-Positive Bacteria
1984In Chapter 1 peptidoglycan was described as the most important component of bacterial cell walls, being vital for the normal functioning of the cell Peptidoglycan accounts for approximately 50 per cent of the weight of the wall of Gram-positive bacteria.
Peter A. Lambert +2 more
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Innate sensors for Gram-positive bacteria
Current Opinion in Immunology, 2003More than half of invasive bacterial infections are Gram-positive in origin. This class of bacteria has neither endotoxins nor an outer membrane, yet it generates some of the most powerful inflammatory responses known in medicine. Some recent seminal studies go a long way toward settling the controversies that surround the process by which Gram ...
Joerg R. Weber +2 more
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Assembly of pili in Gram-positive bacteria
Trends in Microbiology, 2004The formation of adhesive pili on the surface of Gram-negative bacteria has been studied in detail, whereas the pilus assembly pathways in Gram-positive bacteria remain to be characterized. Gram-positive microbes use the cell wall peptidoglycan as a surface organelle for the covalent attachment of proteins; a strategy that involves sorting signals of ...
Hung Ton-That, Olaf Schneewind
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Effect of Azasteroids on Gram-Positive Bacteria [PDF]
Journal of Bacteriology, 1967 A group of nitrogen-containing steroids closely related in structure was screened for antibacterial activity, by use of Bacillus subtilis and Sarcina lutea as the test organisms. The most active compounds were cholesterol derivatives containing a tertiary or quaternary nitrogen in, or ...
Norman J. Doorenbos +2 more
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Protein Secretion in Gram-Positive Bacteria
2003Studies on protein secretion in Gram-positive bacteria have become of particular importance since many species are of great commercial value and medical interest. Several Gram-positive bacteria have been applied successfully for cost-effective industrial production of enzymes since, due to the absence of an outer membrane, proteins are secreted ...
Jan Maarten van Dijl, Rob Meima
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