Screening of3000 soil samples collected from cities of four different provinces of Iran for starch-hydrolysing bacteria revealed that the nature is enriched with Streptomyces species capable of producing amylolytic enzymes. Among the bacterial isolates, one of the high starch-degrading strains was selected for further microbiological identification and also amylolytic enzyme(s) characteriza...

Over the years, nanostructures have been developed to enable to support enzyme usability to obtain highly selective and efficient biocatalysts for catalyzing processes under various conditions. This review summarizes recent developments in the nanostructures for enzyme supporters, typically those formed with various inorganic materials. To improve enzyme attachment, the surface of nanomaterials...

Restriction-modification systems digest non-methylated invading DNA, while protecting host DNA against the endonuclease activity by methylation. It is widely believed that the methylated DNA would not 'fit' into the binding site of the endonuclease in the productive orientation, and thus steric clashes should account for most of the protection. We test this concept statistically by grafting met...

introduction: there have been many studies in recent years on the role of nitric oxide (no) in acute renal failure. in this study, the effects of inhibition or interoduction of no synthase on renal toxicity of gentamicin were investegated. materials & methods: isolated kidneys of male rats were perfused with tyrode buffer (t) as the control group, t+l-argrinine as group 2, t+l-name as group 3, ...

Tumor heterogeneity and constant selection of therapy-resistant cancer cells in the tumor require combinatorial approaches to treatment that affect various vital processes tumor. Immunotherapy made a revolution among treatment. Today, many methods are grouped around this type Most antitumor immunotherapeutic agents administered intravenously, which cause serious, often life-threatening, side ef...

since most of the studies on chemical compounds of dermatophytes have shown the existence of a relationship between their pathogenisity and proteolytec enzymes. activities of 19 different enzymes in viable mycelia and cytoplasmic extracts of t.rubrum (cetr), t.mentagrophytes (cetm) and t.verrucosum (cetv) were investigated by the api-zym system. the results showed that viable mycelia of t.rubrm...

conclusions in this study, the l-lps immune response of bovine cells was significant, indicating that tlr2 is the predominant receptor for l-lps. due to l-lps endotoxin-like activity, we found a strategy through using bmap-28 to prevent l-lps-induced tlr2-dependent immune activation in bovine cells. materials and methods in this study, l-lps-induced proinflammatory cytokine production in bovine...