Heat-stable and heat-labile components of nonspecific acid phosphatase detected in Pseudomonas pseudomallei. 1991

E Kondo, and S Dejsirilert, and N Wejprasit, and D Chiewsilp, and K Kanai
Department of Medical Sciences, Ministry of Public Health, Soi Bamrasnaradura Hospital, Nonthaburi, Thailand.

In a whole cell assay system with p-nitrophenyl phosphate as substrate, strains of Pseudomonas pseudomallei showed a two-peak pattern in pH activity curve of acid phosphatase, suggesting the presence of two enzyme components different in pH optimum (4.2 and 5.2). The component of 5.2 pH optimum was detected in the outer membrane fraction and the activity was resistant to heating at 70 C for 30 min. The other component of 4.2 pH optimum was heat-labile. No substantial difference was observed in the enzymatic activity between R and S type colonies.

UI MeSH Term Description Entries
D004795 Enzyme Stability The extent to which an enzyme retains its structural conformation or its activity when subjected to storage, isolation, and purification or various other physical or chemical manipulations, including proteolytic enzymes and heat. Enzyme Stabilities,Stabilities, Enzyme,Stability, Enzyme
D006358 Hot Temperature Presence of warmth or heat or a temperature notably higher than an accustomed norm. Heat,Hot Temperatures,Temperature, Hot,Temperatures, Hot
D006863 Hydrogen-Ion Concentration The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D000135 Acid Phosphatase An enzyme that catalyzes the conversion of an orthophosphoric monoester and water to an alcohol and orthophosphate. EC 3.1.3.2. Acid beta-Glycerophosphatase,Acid beta Glycerophosphatase
D001425 Bacterial Outer Membrane Proteins Proteins isolated from the outer membrane of Gram-negative bacteria. OMP Proteins,Outer Membrane Proteins, Bacterial,Outer Membrane Lipoproteins, Bacterial
D016957 Burkholderia pseudomallei A species of gram-negative, aerobic bacteria that causes MELIOIDOSIS. It has been isolated from soil and water in tropical regions, particularly Southeast Asia. Pseudomonas pseudomallei

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