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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2-3
pubmed:dateCreated
2005-10-25
pubmed:abstractText
Intron loss and its evolutionary significance have been noted in Drosophila. The current study provides another example of intron loss within a single-copy Dfak gene in Drosophila. By using polymerase chain reaction (PCR), we amplified about 1.3 kb fragment spanning intron 5-10, located in the position of Tyr kinase (TyK) domain of Dfak gene from Drosophila melanogaster species group, and observed size difference among the amplified DNA fragments from different species. Further sequencing analysis revealed that D. melanogaster and D. simulans deleted an about 60 bp of DNA fragment relative to other 7 Drosophila species, such as D. elegans, D. ficusphila, D. biarmipes, D. takahashii, D. jambulina, D. prostipennis and D. pseudoobscura, and the deleted fragment located precisely in the position of one intron. The data suggested that intron loss might have occurred in the Dfak gene evolutionary process of D. melanogaster and D. simulans of Drosophila melanogaster species group. In addition, the constructed phylogenetic tree based on the Dfak TyK domains clearly revealed the evolutionary relationships between subgroups of Drosophila melanogaster species group, and the intron loss identified from D. melanogaster and D. simulans provides a unique diagnostic tool for taxonomic classification of the melanogaster subgroup from other group of genus Drosophila.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0016-6707
pubmed:author
pubmed:issnType
Print
pubmed:volume
125
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
223-30
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:16247694-Amino Acid Sequence, pubmed-meshheading:16247694-Animals, pubmed-meshheading:16247694-Base Sequence, pubmed-meshheading:16247694-Cloning, Molecular, pubmed-meshheading:16247694-DNA, Complementary, pubmed-meshheading:16247694-Drosophila, pubmed-meshheading:16247694-Drosophila Proteins, pubmed-meshheading:16247694-Drosophila melanogaster, pubmed-meshheading:16247694-Evolution, Molecular, pubmed-meshheading:16247694-Exons, pubmed-meshheading:16247694-Focal Adhesion Kinase 1, pubmed-meshheading:16247694-Focal Adhesion Protein-Tyrosine Kinases, pubmed-meshheading:16247694-Genes, Insect, pubmed-meshheading:16247694-Introns, pubmed-meshheading:16247694-Molecular Sequence Data, pubmed-meshheading:16247694-Phylogeny, pubmed-meshheading:16247694-Protein Structure, Tertiary, pubmed-meshheading:16247694-Sequence Homology, Amino Acid, pubmed-meshheading:16247694-Species Specificity
pubmed:year
2005
pubmed:articleTitle
Identification of one intron loss and phylogenetic evolution of Dfak gene in the Drosophila melanogaster species group.
pubmed:affiliation
Wuhan Center for Developmental Biology, Institute of Hydrobiology, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Wuhan 430072, China.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't