Linked Life Data

2062305

Source:http://linkedlifedata.com/resource/pubmed/id/2062305

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1991-8-6
pubmed:abstractText
We examined the influence of DNA form and size on the arrangement and genomic location of transforming DNA sequences in the basidiomycete Coprinus cinereus. Protoplasts with either single or double mutations in the tryptophan synthetase (TRP1) gene were transformed with cloned copies of this gene which contained only a single DNA strand, contained a specific single nick within the C. cinereus sequences (4.8 kb), contained a specific double-strand break, or contained an additional 35 kb of flanking genomic sequences. Gene replacement events were recovered when each DNA type was used. However, none of these substrates offers a substantial improvement in transformation or targeting frequency when compared to supercoiled circular DNA, which has allowed recovery of both gene replacements as well as homologous insertions in 5% of the transformants analyzed. The frequency of transformants carrying tandem insertions with multiple copies of the transforming DNA was reduced when single-stranded DNA was used, and increased when DNA containing double-strand breaks was used. These results have important implications for the efficient design of targeted transformation and co-transformation experiments.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0026-8925
pubmed:author
pubmed:issnType
Print
pubmed:volume
227
pubmed:geneSymbol
TRP1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
245-51
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Targeted transformation in Coprinus cinereus.
pubmed:affiliation
Department of Biology and Curriculum in Genetics, University of North Carolina, Chapel Hill 27599-3280.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't