Document Detail

Horizontal transfer of non-LTR retrotransposons in vertebrates.
MedLine Citation:
PMID:  10952205     Owner:  NLM     Status:  MEDLINE    
Since their discovery in family Bovidae (bovids), Bov-B LINEs, believed to be order-specific SINEs, have been found in all ruminants and recently also in Viperidae snakes. The distribution and the evolutionary relationships of Bov-B LINEs provide an indication of their origin and evolutionary dynamics in different species. The evolutionary origin of Bov-B LINE elements has been shown unequivocally to be in Squamata (squamates). The horizontal transfer of Bov-B LINE elements in vertebrates has been confirmed by their discontinuous phylogenetic distribution in Squamata (Serpentes and two lizard infra-orders) as well as in Ruminantia, by the high level of nucleotide identity, and by their phylogenetic relationships. The direction of horizontal transfer from Squamata to the ancestor of Ruminantia is evident from the genetic distances and discontinuous phylogenetic distribution of Bov-B LINE elements. The ancestral snake lineage (Boidae) has been recognized as a possible donor of Bov-B LINE elements to Ruminantia. The timing of horizontal transfer has been estimated from the distribution of Bov-B LINE elements in Ruminantia and the fossil data of Ruminantia to be 40-50 mya. The phylogenetic relationships of Bov-B LINE elements from the various Squamata species agrees with that of the species phylogeny, suggesting that Bov-B LINE elements have been stably maintained by vertical transmission since the origin of Squamata in the Mesozoic era.
D Kordis; F Gubensek
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Genetica     Volume:  107     ISSN:  0016-6707     ISO Abbreviation:  Genetica     Publication Date:  1999  
Date Detail:
Created Date:  2000-09-07     Completed Date:  2000-09-07     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370740     Medline TA:  Genetica     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  121-8     Citation Subset:  IM    
Department of Biochemistry and Molecular Biology, Jozef Stefan Institute, Ljubljana, Slovenia.
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MeSH Terms
Evolution, Molecular
Gene Transfer, Horizontal*
Invertebrates / genetics
Long Interspersed Nucleotide Elements
Species Specificity
Vertebrates / genetics
Reg. No./Substance:

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