نتایج جستجو برای: e coli expression system

تعداد نتایج: 3940018  

Journal: :iranian journal of biotechnology 2006
seyedeh marjan varedi koolaee seyed abbas shojaosadati valliollah babaeipour nasser ghaemi

the objective of this research was to investigate the influence of the over-expression of recombinant interferon-g during high cell density cultivation on cellular characteristics of recombinant e. coli. batch and fed-batch culture techniques were employed to grow escherichia coli bl21 for production of human gamma-interferon in pet expression system. final cell densities in batch and fed-batch...

Background: Rotavirus group A (RVA) is recognized as a major cause of severe gastroenteritis in children and new-born animals. Nonstructural protein 4 (NSP4) is responsible for the enterotoxic activity of these viruses in the villus epithelial cells. Amino acids 114-135 of NSP4 are known to form the diarrhea-inducing region of this viral enterotoxin. Therefore, developing an NSP4 lacking the en...

Background: Vascular endothelial growth factor-A (VEGF-A), an endothelial cell-specific mitogen produced by various cell types, plays important roles in cell differentiation and proliferation. In this study we investigated the effect of recombinant VEGF-A on differentiation of mesenchymal stem cells (MSCs) to endothelial cells (ECs). Methods: VEGF-A was expressed in E. coli BL21 (DE3) and BL21...

بخشی, مصطفی, ابراهیمی, فیروز, زرگان, جمیل, شیخ زاده, وحیده, نظریان, شهرام,

Abstract Background and purpose: E. coli O157:H7 is one of the intestinal pathogens that mediate serious damages in gastrointestinal track. The bacterium attachment in large intestine is mediated via some colonization factors mainly Type III secretion proteins that are involved in this process. Among these factors, EspA protein plays an important role in system foundation. The aim of this ...

Journal: :vaccine research 0
maryam golshani departmant of molecular biology, pasteur institute of iran, tehran, iran payam zandi departmant of molecular biology, pasteur institute of iran, tehran, iran saeid bouzari departmant of molecular biology, pasteur institute of iran, tehran, iran

introduction: omp31 is animmunodominant and protective antigen conserved in brucella species and a good candidate for vaccine design. material & methods: the present study aimed at in silico design of the truncated omp31 (tomp31) using bioinformatic tools and to express the selected form in escherichia coli (e. coli) results and conclusion: various bioinformatically calculated scores for the mo...

Journal: :jundishapur journal of microbiology 0
amir morshedi department of biology, faculty of science, university of isfahan, isfahan, ir iran sayyed hamid zarkesh-esfahani department of biology, faculty of science, university of isfahan, isfahan, ir iran; department of biology, faculty of sciences, university of isfahan, hezar jerib street, isfahan, 81746-73695, ir iran. tel: +98-3117932473, fax: +98-3117932456 mohaddeseh behjati isfahan cardiovascular research institute, isfahan universityof medical sciences, isfahan, ir iran

conclusions the leptin can also be used for the treatment of severe and intractable l. monocytogenes and e. coli infection. results our data demonstrates that leptin is able to induce cd11b expression on neutrophils but this induction is significantly less than l. monocytogenes. indeed, cells treated with leptin had lower amounts of apoptosis compared with untreated cells. the highest amount of...

Azam Safari Fateme Hoseini Hossein Shahbani Zahiri, Kambiz Akbari Noghabi Mojtaba Samoodi Negar Omid Yeganeh Reza Hajhosseini Sara Abolhassani Rad

CoQ10 and lycopene are isoprenoid compounds with nutraceutical and pharmaceutical benefits. In this study, the effect of concomitant lycopene biosynthesis on CoQ10 accumulation in transformed Escherichia coli DH5α was studied. A lycopene production pathway including geranylgeranyl diphosphate synthase (crtE), phytoene synthase (crtB), and phytoene desaturase (crtI) from Erwinia herbicola was co...

Alexis Musacchio, Mohammad Azizi, Nelvis Figueroa, Ornaldo Pardo, Verena Muzio,

DNA coding for the core antigen from hepatitis B Virus (HBcAg) was amplified, cloned and propagated in E. coli. The core protein was expressed in E. coli and the product was readily detected by Western blot. This protein can be used as a diagnostic material in serum screening tests. To increase the level of expression of this antigen in bacteria, two plasmids were constructed in which the gene ...

N. Biroonro Z. Hajihassan

Activin A is a member of the transforming growth factor β super family. Because of its extensive clinical usages, its recombinant production is beneficial. In this study, activin A was expressed in E. coli using the pET 21a expression vector. The optimization of the activin A production in E. coli was done by using the response surface methodology (RSM). At this stage, the effect of IPTG and la...

Ali Hatef Salmaninan, Anis Jafati, Mana Oloomi, Saeid Bouzari,

Elaboration of different toxins by enterotoxigenic E. coli has been considered as one of the main virulence factors contributing to the manifestation of disease caused by these microorganisms. Various strategies have been employed to raise antibodies against these toxins as a line of defense. In this study, the 3’ terminus of the gene that codes for the binding subunit of the heat-labile entero...

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