Escherichia coli is used as a chassis for a number of Synthetic Biology applications. The lack of suitable chromosomal integration and expression loci is among the main hurdles of the E. coli engineering efforts. We identified and validated chromosomal integration and expression target sites within E. coli K12 MG1655 flagellar region 1. We analyzed five open reading frames of the flagellar regi...

Escherichia coli BL21 (DE3) and its derivatives are widely used for the production of recombinant proteins, but these purified proteins are always contaminated with lipopolysaccharide (LPS). LPS is recognized by the toll-like receptor 4 and myeloid differentiation factor 2 complex of mammalian immune cells and leads to release of pro-inflammatory cytokines. It is a vital step to remove LPS from...

A study of the optimization of CuZn superoxide dismutase gene expression in E. coli L21/pET28-SOD was undertaken. The SOD gene was directionally cloned into expression vector pET28.The recombinant plasmid was transformed into E. coli BL21 and induced by IPTG to express SOD protein. The four effective factors, including the initial concentration of BL21/pET28-SOD, concentration of IPTG, incubati...

with the aim of the secretion of human granulocyte macrophage-colony stimulating factor (hgm-csf) in escherichia coli, hgm-csf cdna was fused in-frame next to the signal sequence of st toxin (st-i) of exteroxigenic e. coli, containing 53 or 19 amino acids of signal peptide. the fused stsig::hgm-csf coding fragments were inserted into a t7-based expression plasmid. the recombinant plasmids were ...

Malaria is still an essential epidemiological disease worldwide, including in Indonesia. Several approaches are performed to control the disease, as well vaccine development. The Cysteine-rich interdomain region α of Plasmodium falciparum erythrocyte membrane protein 1 (CIDRα-PfEMP1) a pivotal domain malaria pathogenesis make it candidate. development using recombinant technology. Recombinant p...

Recent findings have sparked great interest in the putative magnetic receptor protein MagR. However, vivo experiments revealed no moment of MagR at room temperature. Nevertheless, interaction and fusion proteins with silica-coated magnetite beads proven useful for purification. In this study, we recombinantly produced two different Escherichia coli BL21(DE3) to (1) expand earlier purification s...

Transforming growth factor-beta 3 (TGF-β3) is an important cytokine involved in various biological processes. TGF-β3 used as a scar-reducing antifibrotic agent for acute and chronic wounds fibrosing disorders. TGF-β3, valuable therapeutic protein, produced recombinantly different expression systems. the Escherichia coli (E. coli) system, widely due to its advantages recombinant production, comm...

In this study we have employed metabolomics approaches to understand the metabolic effects of producing enhanced green fluorescent protein (eGFP) as a recombinant protein in Escherichia coli cells. This metabolic burden analysis was performed against a number of recombinant expression systems and control strains and included: (i) standard transcriptional recombinant expression control system BL...

BACKGROUND AND OBJECTIVES In present study we aimed to clone the luxI gene encoding N-acyl-homoserine synthase detected in clinical isolates of Acinetobacter baumannii and study its expression in Escherichia coli transformants. MATERIALS AND METHODS Four A. baumannii hospital strains which demonstrated strong biofilm activity were selected in this investigation. The presence of luxI gene was ...