Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1990-7-20
pubmed:abstractText
A family of expression plasmid vectors were constructed by fusing the strong P2 promoter of the rrnB gene of Escherichia coli (coding for ribosomal RNA) to the lac operator, thereby eliminating regulatory sequences from the rrnB gene and placing the expression under lac repressor control. This promoter proved to be stronger in vivo than the well-known consensus tac promoter, and its strength could be further increased by converting the sequence to consensus. The stability of the recombinant proteins could be increased by fusion to various lengths of the N-terminal end of beta-galactosidase, or by inserting a synthetic oligonucleotide, coding for heptathreonine. A new method was developed for the stabilization of recombinant plasmids without antibiotic selection, based on the presence of an essential gene on the plasmid and its absence from the chromosome. The application of this method is illustrated by the example of a plasmid expressing human proinsulin.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
B
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0168-1656
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
243-50
pubmed:dateRevised
2006-5-1
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
New approaches to increase the expression and stability of cloned foreign genes in Escherichia coli.
pubmed:affiliation
Institute of Biochemistry, Biological Research Center of the Hungarian Academy of Sciences, Szeged, Hungary.
pubmed:publicationType
Journal Article