Background and Objective: Pseudomonas aeruginosa is an opportunistic pathogen that causes severe and lethal infections in immunocompromised individuals. This bacterium possesses a single polar flagellum. Flagellum and its subunit Flagellin play important roles in the pathogenesis of P. aeruginosa. Flagellin induces immune responses by interaction of its N-terminal domain with TLR-5. Our main ai...

Background: Recombinant tissue plasminogen activator (rt-PA) is one of the most important thrombolytic agentsused in patients with vascular occlusions such as acute ischemic stroke or myocardial infarction. A variety of recombinant protein expression systems have been developed for heterologous gene expression in prokaryotic and eukaryotic hosts. In recent years, Leishmania tarentolae (L. tare...

Background & Objective: Brucellosis is an important zoonotic disease of economic significance. Brucella species are gram-negative, facultative intracellular bacteria, and are capable of replicating in the phagosomes of macrophages. They cause infection in several animal species and humans. Prevention of new diseases and diagnosis of cases infected with the organism are both essential for eradic...

Introduction: Escherichia coli (E.coli) is one of the most widely used hosts for the production of recombinant proteins. The main problem in getting high product yields and productivity is the accumulation of acetic acid (acetate) as an unwanted metabolic by-product. In this study, an antisense-based strategy as a metabolic engineering approach was employed to hamper the acetate excretion probl...

Introduction: Inteins (INT) are internal parts of a number of proteins in yeast and some other unicellular eukaryotes, which can be separated from the immature protein during protein splicing process. After identifying the mechanism of intein action, applications of these sequences are be considered in the single- step purification of recombinant proteins and different intein tags were develope...

Background & Objective: In order to enhance the expression of soluble proteins and facilitate their purification and development of multi-functional polypeptide , chimerical recombinant proteins have been invented . The purpose of this study was to construct ctxB-gfp-stxB gene cassette to measure the uptake and excretion of chimerical antigen in future studies.   Materials & Methods: After prep...