AnE. coliβ-galactosidase cassette suitable for study of eukaryotic expression

Family of plasmid vectors for the expression of beta-galactosidase fusion proteins in eukaryotic cells.

study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

Expression of Influenza Heamagglutinin Globular Head in Different Eukaryotic Cells

Background and Aims: Influenza (flu) is a respiratory infection in mammals and birds. It is caused by an RNA virus in the family Orthomyxoviridae. The virus is divided into three main types. Influenza virus type A is found in a wide variety of bird and mammal species and can undergo major shifts in immunological properties. Hemagglutinin (HA) is an important influenza virus surface antigen that...

A Novel Vector for Expression/Secretion of Properly Folded Eukaryotic Proteins: a Comparative Study on Cytoplasmic and Periplasmic Expression of Human Epidermal Growth Factor in E. coli

Expression of eukaryotic proteins in E. coli often results in their aggregation. Proper folding and solubility of therapeutical proteins are the pre-requisite for their bioactivity. This is not achieved in cytoplasmic expression in E. coli because of the absence of disulfide bonds formation. A novel expression/secretion vector was constructed which exploited β-lactamase signal sequence to trans...

Construction and Eukaryotic Expression of Recombinant Large Hepatitis Delta Antigen

Background: Hepatitis delta virus (HDV) is a subviral human pathogen that exploits host RNA editing activity to produce two essential forms of the sole viral protein, hepatitis delta antigen (HDAg). Editing at the amber/W site of HDV antigenomic RNA leads to the production of the large form (L-HDAg), which is required for RNA packaging. Methods: In this study, PCR-based site-directed mutagen...