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The Euglena gracilis chloroplast genome: structural features of a DNA region possibly carrying the single origin of DNA replication.
MedLine Citation:
PMID:  24178003     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We sequenced a Bg1II-HindIII DNA fragment of the Euglena gracilis chloroplast genome which most likely carries the single origin of DNA replication according to recent electronmicroscopic mapping studies (Koller and Delius 1982a; Ravel-Chapuis et al. 1982). This DNA fragment contains a polymorphic region (Schlunegger et al. 1983) which is composed, as will be shown, of multiple tandem repeats (54 bp, 87% A+T). Furthermore we located on this DNA fragment a short inverted repeat element (96 positions) observed in the electronmicroscopic studies (Koller and Delius 1982b). Between the borders of the polymorphic region and the nearby inverted repeat (distance of 179 positions) we retrieved an exact copy of parts of the rDNA leader (105 positions) including 49 positions of the chloroplast trnW gene. A computer search for bacterial type Ori-regions did not reveal any significant sequence homology. However, the polymorphic region and its immediate vicinity have the capacity to form multiple stem and loop structures which may be involved in DNA replication initiation.
Authors:
B Schlunegger; E Stutz
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Current genetics     Volume:  8     ISSN:  0172-8083     ISO Abbreviation:  Curr. Genet.     Publication Date:  1984 Oct 
Date Detail:
Created Date:  2013-11-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8004904     Medline TA:  Curr Genet     Country:  United States    
Other Details:
Languages:  eng     Pagination:  629-34     Citation Subset:  -    
Affiliation:
Laboratoire de Biochimie, Université de Neuchâtel, Chantemerle 18, CH-2000, Neuchâtel, Switzerland.
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