knowing the nucleotide sequence of the cholera toxin operon, we designed oligonucleotide primers for its-pcr amplification from local clinical isolates of v. cholerae. the resulting amplification product was cloned in a common puc18 vector. subsequently, a part of this operon encoding the cholera toxin bsubunit (ctb) was reamplified and cloned between the bamh1 and ecor1 sites of the same vecto...

objective: despite using the bacille calmette guerin (bcg) vaccine, tuberculosis (tb) is still a worldwide disease that kills 2-3 million people each year. developing a new and more effective vaccine is one way to possibly reduce the morbidity and mortality of tb. the mtb72f vaccine is one of the important subunit vaccines applied in human clinical trials. in this study, we have constructed an ...

Introduction: Gene expression and purification of luciferases from the firefly, Lampyris turkestanicus, and optimization of cellular ATP measurements were performed. Methods: cDNA encoding luciferases from Lampyris turkestanicus was transferred from pQE30 vector into pET28a expression vector and pLtu28 was built. Newly constructed vector was expressed in E. coli XL1 Blue and the recombinant l...

Over the past decade variety of hosts and vector systems for recombinant protein expression has increased dramatically. Researchers now select from among mammalian, insect, yeast, prokaryotic hosts, number vectors available use in these organisms continues to grow. With availability cDNAs coding sequencing information, it is certain that other, yet be developed will important future. Despite de...

objective: the secreted aspartic proteinases (sap2) of candida albicans has prominent role on candida adherence, invasion, and pathogenicity. the aim of this study was cloning, expression and characterizing of sap2 enzyme. also in this study for the first time, the expression system p. pasturis was used for expressing the recombinant protein. materials and methods: c. albicans sap2 gene was am...