Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1992-1-3
pubmed:abstractText
A 16 base-pair palindrome upstream of the Agrobacterium tumefaciens octopine synthase (ocs) gene functions as a positive regulatory element in plant cells (Ellis et al. (1987) EMBO J. 6, 3203-3208; Fromm et al. (1989) Plant Cell 1, 977-984). We have converted it into a negative element by locating two copies flanking the TATA-box of the constitutively expressed CaMV 35S promoter. The reduced promoter activity is very likely due to sterical hindrance of the ocs binding protein (OCSTF) x ocs complex with the transcription initiation complex. We propose that this type of constructs can be used for the identification of recognition sites for DNA-binding proteins which are labile in vitro as well as for determining the DNA-binding activity of a trans-acting factor in vivo.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0014-5793
pubmed:author
pubmed:issnType
Print
pubmed:day
18
pubmed:volume
293
pubmed:geneSymbol
ocs
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
175-8
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Repression of the CaMV 35S promoter by the octopine synthase enhancer element.
pubmed:affiliation
Institut für Genbiologische Forschung Berlin GmbH, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't