Linked Life Data

11439135

Source:http://linkedlifedata.com/resource/pubmed/id/11439135

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2001-7-5
pubmed:abstractText
The Arabidopsis thaliana PROTODERMAL FACTOR1 (PDF1) gene encoding a putative extracellular proline-rich protein is exclusively expressed in the L1 layer of shoot apices and the protoderm of organ primordia. In order to identify essential cis-regulatory sequences required for the L1 layer-specific expression, a series of 5' deletions of the PDF1 promoter were fused to the beta-glucronidase (GUS) gene and introduced into Arabidopsis plants. Our analysis revealed that the minimum region necessary to confer L1-specific expression of PDF1 is confined within a 260-bp fragment upstream of the transcription start site. We identified an 8-bp motif in this region that is conserved between promoter regions of all the L1-specific genes so far cloned, and we designated it the L1 box. Electrophoretic mobility shift assays demonstrated that the L1-specific homeodomain protein ATML1 can bind to the L1 box sequence in vitro. The GUS expression in transgenic plants disappeared when a mutation that abolishes binding of ATML1 was introduced into the PDF1 l1 box sequence of the construct. These results suggest that the L1 box plays a crucial role in the regulation of PDF1 expression in L1 cells and that ATML1 could cooperate to drive L1-specific expression.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0960-7412
pubmed:author
pubmed:issnType
Print
pubmed:volume
26
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
487-94
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Identification of a cis-regulatory element for L1 layer-specific gene expression, which is targeted by an L1-specific homeodomain protein.
pubmed:affiliation
Division of Biological Sciences, Graduate School of Science, Hokkaido University, N10, W8, Sapporo, 060-0810, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't