✦ LIBER ✦

Studies on the aminopeptidase test for the distinction of gram-negative from gram-positive bacteria

✍ Scribed by G. Cerny

Publisher: Springer
Year: 1978
Tongue: English
Weight: 495 KB
Volume: 5
Category: Article
ISSN: 1432-0614
DOI: 10.1007/bf00498805

No coin nor oath required. For personal study only.

✦ Synopsis

The aminopeptidase test was performed with representatives of gram-negative, gram-positive, and gram-variable bacteria. All gram-negative bacteria tested gave a positive test reaction with L-alanine-4-nitroanilide as test substrate. Representatives of the coryneform bacteria and some streptococci showed aminopeptidase activity after prolonged reaction times. A correlation between aminopeptidase activity and distinct interpeptide bridge composition in the peptidoglycan of many strains was demonstrated. The influence of growth conditions on aminopeptidase activity of intact bacterial cells is shown.

📜 SIMILAR VOLUMES

Rapid method for distinction of gram-neg

Rapid method for distinction of gram-negative from gram-positive bacteria

✍ T. Gregersen 📂 Article 📅 1978 🏛 Springer 🌐 English ⚖ 211 KB

A rapid method for distinction between gram-negative and grampositive bacteria by means of a 3% solution of potassium hydroxide is tested on 71 gram-positive and 55 gram-negative bacterial strains. The method proved reliable with one exception only, a Bacillus macerans strain. That strain was defina

Cooperation between toll-like receptor 2

Cooperation between toll-like receptor 2 and 4 in the brain of mice challenged with cell wall components derived from gram-negative and gram-positive bacteria

✍ Nathalie Laflamme; Hakim Echchannaoui; Régine Landmann; Serge Rivest 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 618 KB

Investigations on the thermotropic phase

Investigations on the thermotropic phase behaviour of lipids A from Brucella and other Gram-negative bacteria

✍ M.C. Ramos-Sánchez; A. Orduña-Domingo; A. Rodríguez-Torres; F.J. Martín-Gil; J. 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 415 KB

Antimicrobial activity of the essential

Antimicrobial activity of the essential oil of mastic gum (Pistacia lentiscus var. chia) on Gram positive and Gram negative bacteria in broth and in Model Food System

✍ Chrysoula C. Tassou; G.J.E. Nychas 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 601 KB

Effect of Ca+ on the photobactericidal e

Effect of Ca+ on the photobactericidal efficacy of methylene blue and toluidine blue against gram-negative bacteria and the dye affinity for lipopolysaccharides

✍ Marina N. Usacheva; Matthew C. Teichert; Chet E. Sievert; Merrill A. Biel 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 140 KB

Background and Objectives: Methylene blue (MB) and toluidine blue (TB) form metachromatic complexes with lipopolysaccharides (LPS). The greater photobactericidal efficacy of TB may be explained by its affinity for LPS. This study aims to elucidate the difference in photobactericidal efficacies betwe