نتایج جستجو برای: e coli dh5α
تعداد نتایج: 1122935 فیلتر نتایج به سال:
Day-old chicks from 3 hatcheries were placed on bedding paper and brought to a commercial broiler farm between January and July 2016. Sixty-six samples of the paper, which were stained with meconium droppings of the chicks, were collected and examined for isolation of cephalosporin-resistant Enterobacteriaceae. Cefotaxime (CTX)-resistant Klebsiella pneumoniae (1 isolate) and Enterobacter cloaca...
−We established a gene expression process to produce a flavor peptide in Pichia pastoris. The octapeptide Lys-Gly-Asp-Glu-Glu-Ser-Leu-Ala was isolated from beef digested by papain, known as “beefy meaty peptide” (BMP). It was considered a savory seasoning in previous literatures. To produce BMP by microorganisms, BMP expression structures encoding tandem repeats of the octapeptide were designed...
Aim: To clone the Salmonella Typhimurium protein L-isoaspartyl O-methyl transferase (PIMT) enzyme and to analyze the sequence with PIMT gene of other pathogenic serovars of Salmonella. Materials and Methods: Salmonella Typhimurium strain E-2375 was procured from the National Salmonella Center, IVRI. The genomic DNA was isolated from Salmonella Typhimurium. Polymerase chain reaction (PCR) was ca...
Stomata are microscopic pores in leaf epidermis that regulate gas exchange between plants and the environment. Being natural openings on the leaf surface, stomata also serve as ports for the invasion of foliar pathogenic bacteria. Each stomatal pore is enclosed by a pair of guard cells that are able to sense a wide spectrum of biotic and abiotic stresses and respond by precisely adjusting the p...
background: neosporosis is caused by an obligate intracellular parasitic protozoa neospora caninum which infect variety of hosts. ncsrs2 is an immuno-dominant antigen of n. caninum which is consi-dered as one of the most promising targets for a recombinant or dna vaccine against neosporosis. as no study has been carried out to identify the molecular structure of n. caninum in iran, as first ste...
سابقه و هدف: گلوکز اکسیداز، آنزیمی است که در صنایع غذایی، شیمیایی، آرایشی و بهداشتی و هم چنین در کیت های تشخیص گلوکز استفاده می شود. در مرحله اول این طرح dna از قارچ رشته ای آسپرژیلوس نایجر atcc9029 با استفاده از روش سونیکاسیون و لیز در نیتروژن مایع جدا شد. سپس dna ژنومیک استخراج شده در پلاسمید ptz57r کلون شد، در ادامه این طرح، ژن گلوکزاکسیداز (go) به وکتور بیانی دیگر (pkk223-3) وارد شد، که پای...
Bệnh dịch tả heo cổ điển (Classical swine fever disease) là một bệnh lâu đời, nguy hiểm và gây thiệt hại kinh tế đáng kể cho ngành chăn nuôi trên toàn thế giới. Trình tự gene mã hóa protein E2 cơ sở quan trọng để đánh giá, so sánh đa dạng di truyền của CSFV phát triển vaccine. Nghiên cứu này được tiến hành nhằm tạo ra các dòng E. coli mang plasmid chứa đầy đủ trình E2. 21 mẫu dương tính với đã ...
We report the discovery of antibacterial leads, keto- and diketo-acids, targeting two prenyl transferases: undecaprenyl diphosphate synthase (UPPS) and dehydrosqualene synthase (CrtM). The leads were suggested by the observation that keto- and diketo-acids bind to the active site Mg(2+)/Asp domain in HIV-1 integrase, and similar domains are present in prenyl transferases. We report the x-ray cr...
PCR fragments and linear vectors containing overlapping ends are easily assembled into a propagative plasmid by homologous recombination in Escherichia coli. Although this gap-repair cloning approach is straightforward, its existence is virtually unknown to most molecular biologists. To popularize this method, we tested critical parameters influencing the efficiency of PCR fragments cloning int...
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