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  A-thaliana TRANSPARENT TESTA 1 is involved in seed coat development and defines the WIP subfamily of plant zinc finger proteins

Sagasser, M., Lu, G. H., Hahlbrock, K., & Weisshaar, B. (2002). A-thaliana TRANSPARENT TESTA 1 is involved in seed coat development and defines the WIP subfamily of plant zinc finger proteins. Genes & Development, 16(1), 138-149.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-3E1C-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-3E1D-B
Genre: Journal Article

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 Creators:
Sagasser, M.1, Author              
Lu, G. H.2, Author              
Hahlbrock, K.3, Author              
Weisshaar, B.1, 3, Author              
Affiliations:
1ADIS, MPI for Plant Breeding Research, Max Planck Society, ou_1113564              
2Dept. of Plant Breeding and Genetics (Maarten Koornneef), MPI for Plant Breeding Research, Max Planck Society, ou_1113569              
3Dept. of Biochemistry (Klaus Hahlbrock), MPI for Plant Breeding Research, Max Planck Society, ou_1113566              

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Free keywords: C2H2/C2HC zinc finger; condensed tannins; nuclear localization; regulatory protein; tt1
 Abstract: Seeds of the Arabidopsis thaliana transparent testa 1 mutant (tt1) appear yellow, due to the lack of condensed tannin pigments in the seed coat. The TT1 gene was isolated by reverse genetics using an En-1 transposon mutagenized A. thaliana population. TT1 gene expression was detected in developing ovules and young seeds only, and the gene was shown to encode a nuclear protein. Mutant seeds displayed altered morphology of the seed endothelium in which brown tannin pigments accumulate in wild-type plants, indicating that TT1 is involved in the differentiation of this cell layer. When overexpressed in transgenic A. thaliana plants, TT1 caused aberrant development and organ morphology. The protein contains a novel combination of two TFIIIA-type zinc finger motifs. Closely related motifs were detected in a number of putative proteins deduced from plant genomic and EST sequences. The new protein domain containing this type of zinc finger motifs was designated WIP, according to three strictly conserved amino acid residues. Our data indicate the existence of a small gene family in A. thaliana which is defined by the occurrence of the WIP domain. WIP genes may play important roles in regulating developmental processes, including the control of endothelium differentiation.

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Language(s): eng - English
 Dates: 2002-01-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 127302
ISI: 000173188100013
 Degree: -

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Title: Genes & Development
  Alternative Title : Genes Dev.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 16 (1) Sequence Number: - Start / End Page: 138 - 149 Identifier: ISSN: 0890-9369