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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2005-10-31
pubmed:abstractText
A novel defensin gene was isolated from Ginkgo biloba. The full-length cDNA of G. biloba defensin (designated as Gbd) was 534bp. The cDNA contained a 240-bp open reading frame encoding an 80-amino acid protein of 5.68 kDa with a potential 30 aa signal peptide. The putative GbD mature protein showed striking similarity to other plant defensins, representing low molecular size antimicrobial polypeptides. Eight cysteine sites conserved in plant defensins were also found in GbD at similar positions. Three-dimensional structure modeling showed that GbD strongly resembled defensin from tobacco (NaD1) and consisted of an alpha-helix and a triple-strand antiparallel beta-sheet that were stabilized by four intramolecular disulfide bonds, implying GbD may have functions similar to NaD1. The genomic DNA gel blot indicated that Gbd belonged to a multigene family. Expression analysis revealed that Gbd was up-regulated by wounding and methyl jasmonate treatments, suggesting that Gbd is potentially involved in plant resistance or tolerance to pathogens during wounding.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0176-1617
pubmed:author
pubmed:issnType
Print
pubmed:volume
162
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1160-8
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Molecular cloning, characterization and expression of a novel jasmonate-dependent defensin gene from Ginkgo biloba.
pubmed:affiliation
Plant Biotechnology Research Center, School of Agriculture and Biology, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, SJTU-SIBS-PSU Joint Center for Life Sciences, Shanghai Jiao Tong University, PR China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't