Biocatalytic syntheses often require unfavorable conditions, which can adversely affect enzyme stability. Consequently, improving the stability of biocatalysts is needed, and this achieved by immobilization. In study, we aimed to compare soluble immobilized transaminases from different species. A cysteine in a consensus sequence was converted single aldehyde formylglycine-generating for directe...

Bacillus thuringiensis phosphatidylinositol-specific phospholipase C (PI-PLC), a bacterial model for the catalytic domain of mammalian PI-PLC enzymes, was cross-linked by 1-ethyl-3-[3-dimethylaminopropyl]carbodiimide hydrochloride to probe for the aggregation and/or conformational changes of PI-PLC when bound to activating phosphatidylcholine (PC) interfaces. Dimers and higher order multimers (...

results we found 28 cases with positive results for b. melitensis by multiplex pcr technique which was significantly different from of sat (p<0.05). six samples were positive for b. abortus by pcr. conclusion the results of present study showed that multiplex pcr assay is a rapid and sensitive technique for diagnosis of brucellosis compared to sat. however it is more accurate when coupled with ...

conclusions the present findings reveal a relatively high presence of anti-hev iggs and clearly indicate that hev infection is still present in northern algeria. further, the prediction of hev genotype using different antigens generated from the different hev genotypes shows that the causative strains are more likely to be of genotype 1. background two hepatitis e virus (hev) outbreaks occurred...

background rheumatoid arthritis (ra) is the most common chronic inflammatory disease of unknown etiology. in this regard, the role of bacterial superantigens (as an effective agent) were considered. objectives this study aimed to assess staphylococcal enterotoxin e in the blood of patients with rheumatoid arthritis. patients and methods a total of 83 blood samples of patients with ra were studi...

?-galactosidase is an enzyme capable of hydrolysing lactose, used in various branches industry, mainly the food industry. As efficient industrial use enzymes depends on their reuse, it necessary to find effective method for immobilisation, maintaining high activity and stability. The present work proposes cross-linked magnetic aggregates (mCLEAs) prepare heterogeneous biocatalysts ?-galactosida...

background: enzyme linked immunosorbent assay (elisa) has been described as an alternative to radioimmunoassay for the mammalian and nonmammalian steroids detection. in this study, a simple and rapid elisa is described and validated for 4-pregnen-3,20, dione (progesterone). materials and methods: a general procedure for preparation of the acetylcholinesterase labelled steroid is described which...