Literature DB >> 3133636

Nuclear rDNA in Euglena gracilis: paucity of chromosomal units and replication of extrachromosomal units.

P Ravel-Chapuis1.   

Abstract

Copy number of chromosomal rDNA units was investigated in two Euglena gracilis wild-type strains. It was established by dot blot analysis that these strains possess about four integrated units per haploid genome. This is the first example of a photosynthetic cell with only a few chromosomal ribosomal genes. In addition to these units, Euglena has 800 to 4000 extrachromosomal rDNA units. Electron microscopy revealed that these free rDNA circles bear a replication origin, and intermediates of replication show a D-loop structure.

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Year:  1988        PMID： 3133636      PMCID： PMC336697          DOI： 10.1093/nar/16.11.4801

Source DB:  PubMed          Journal:  Nucleic Acids Res        ISSN： 0305-1048            Impact factor:   16.971


  30 in total

1.  Presence of displacement loops in the covalently closed circular chloroplast deoxyribonucleic acid from higher plants.

Authors:  R Kolodner; K K Tewari
Journal:  J Biol Chem       Date:  1975-11-25       Impact factor: 5.157

Review 2.  Eukaryotic DNA replication.

Authors:  J L Campbell
Journal:  Annu Rev Biochem       Date:  1986       Impact factor: 23.643

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Authors:  L D Saffer; O L Miller
Journal:  Mol Cell Biol       Date:  1986-04       Impact factor: 4.272

4.  The replication of ribosomal DNA in Physarum polycephalum.

Authors:  V M Vogt; R Braun
Journal:  Eur J Biochem       Date:  1977-11-01

Review 5.  Replication of animal mitochondrial DNA.

Authors:  D A Clayton
Journal:  Cell       Date:  1982-04       Impact factor: 41.582

6.  Asynchronous bidirectional replication of polyoma virus DNA.

Authors:  A J Buckler-White; M R Krauss; V Pigiet; R M Benbow
Journal:  J Virol       Date:  1982-09       Impact factor: 5.103

7.  Electron microscopic localization of the chloroplast DNA replicative origins in Chlamydomonas reinhardii.

Authors:  J Waddell; X M Wang; M Wu
Journal:  Nucleic Acids Res       Date:  1984-05-11       Impact factor: 16.971

8.  Eukaryotic DNA replication: viral and plasmid model systems.

Authors:  M D Challberg; T J Kelly
Journal:  Annu Rev Biochem       Date:  1982       Impact factor: 23.643

9.  Ribosomal RNA cistrons in Euglena gracilis.

Authors:  N S Scott
Journal:  J Mol Biol       Date:  1973-12-15       Impact factor: 5.469

10.  Origin of replication in chloroplast DNA of Euglena gracilis located close to the region of variable size.

Authors:  B Koller; H Delius
Journal:  EMBO J       Date:  1982       Impact factor: 11.598
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  4 in total

1.  Analysis of intergenic spacer transcripts suggests 'read-around' transcription of the extrachromosomal circular rDNA in Euglena gracilis.

Authors:  S J Greenwood; M N Schnare; J R Cook; M W Gray
Journal:  Nucleic Acids Res       Date:  2001-05-15       Impact factor: 16.971

2.  Replication initiates at multiple dispersed sites in the ribosomal DNA plasmid of the protozoan parasite Entamoeba histolytica.

Authors:  S K Dhar; N R Choudhury; V Mittal; A Bhattacharya; S Bhattacharya
Journal:  Mol Cell Biol       Date:  1996-05       Impact factor: 4.272

3.  U3 snoRNA genes are multi-copy and frequently linked to U5 snRNA genes in Euglena gracilis.

Authors:  J Michael Charette; Michael W Gray
Journal:  BMC Genomics       Date:  2009-11-16       Impact factor: 3.969

4.  Distribution of conventional and nonconventional introns in tubulin (α and β) genes of euglenids.

Authors:  Rafał Milanowski; Anna Karnkowska; Takao Ishikawa; Bozena Zakryś
Journal:  Mol Biol Evol       Date:  2013-12-02       Impact factor: 16.240
  4 in total

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