By crossed immunoelectrophoresis and Western blotting (immunoblotting), it was shown that Borrelia burgdorferi expresses the 60-kilodalton Common Antigen (CA) that is cross-reactive with an equivalent antigen in a wide range of remotely related bacteria. B. burgdorferi CA is strongly immunogenic. A B. burgdorferi genomic library was constructed by using a plasmid cloning system. Escherichia col...

A plasmid pC194, encoding resistance to chloramphenicol, can serve as a cloning vector in Bacillus subtilis 168 for other HindIII-cleaved DNA segments. Replicons constructed by linking pC194 to several Escherichia coli plasmids can be used to introduce and compare the expression of the same genes in these two bacterial hosts. Since the pioneering experiments of Cohen and his colleagues (1), the...

A versatile plasmid cloning vector pRL60 carrying kanamycin/neomycin resistance (km/neo), erythromycin resistance (ermE) and alpha-amylase (alpha-amy) marker genes that replicates in various Amycolatopsis mediterranei strains and Escherichia coli has been constructed. This cloning vector has been derived from a hybrid plasmid pRL50, which was developed by cloning ermE from pIJ4026 into a pRL1 d...

This study demonstrates that the envelope proteins of hepatitis B virus (HBV) could be incorporated into the lipid membrane of lentivirus pseudotype particles. The assembly procedure was initiated by the transfection of 293T cells with three plasmids: (i) a human immunodeficiency virus (HIV) packaging construct, (ii) a transfer plasmid expressing a reporter gene, and (iii) a plasmid expressing ...

I describe the construction of a variety of Escherichia coli recA deletion strains designed to facilitate molecular cloning. These recA deletion strains permit the efficient cloning of foreign inserts carried in plasmid, phage, cosmid, phasmid (phage-plasmid hybrid) or phosmid (phage-cosmid hybrid) vectors.

BACKGROUND There are several methods, such as vaccination, to control visceral leishmaniasis. Although there is no efficient vaccine, it seem DNA vaccination with stimulates both cellular and humoral immunity apparently is the best way. The aim of this study was cloning and expression of LACK gene, a 36kD protein, as a candidate protein for vaccination against Iranian L. infantum. METHODS Ira...

Bacterial artificial chromosome (BAC) and P1-derived artificial chromosome (PAC) systems were previously developed for cloning of very large eukaryotic DNA fragments in bacteria. We report the feasibility of cloning very large fragments of eukaryotic DNA in bacteria using conventional plasmid-based vectors. One conventional plasmid vector (pGEM11), one conventional binary plasmid vector (pSLJ17...