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Literature DB >> 4084210

The ribosomal RNA genes of three salmonid species.

E M Popodi, D Greve, R B Phillips, P J Wejksnora.

Abstract

The ribosomal RNA cistrons of three species of trout: Salvelinus namaycush (lake trout), Salvelinus fontinalis (brook trout), and Salmo gairdneri (rainbow trout) were examined by Southern blot analysis of genomic DNA. The repeat length of the cistron of S. namaycush is 26 kb. A repeat-length polymorphism was observed in some of the individual fish examined. These individuals showed 24-kb repeats. In some individuals both forms were present. The restriction maps of the transcribed regions of all three species were similar and showed a site homology with other vertebrate ribosomal RNA genes. Interspecific comparison showed restriction-site differences within the spacer regions examined. A restriction-site polymorphism within the 28 S gene was observed in S. fontinalis. The rDNA of S. namaycush liver showed a high degree of methylation as determined by digestion with the restriction endonucleases MspI and HpaII.

Entities: Species

Mesh：

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Year: 1985 PMID： 4084210 DOI： 10.1007/BF00499943

Source DB: PubMed Journal: Biochem Genet ISSN： 0006-2928 Impact factor: 1.890

35 in total

1. Labeling deoxyribonucleic acid to high specific activity in vitro by nick translation with DNA polymerase I.

Authors: P W Rigby; M Dieckmann; C Rhodes; P Berg
Journal: J Mol Biol Date: 1977-06-15 Impact factor: 5.469

2. Gene linkage by RNA-DNA hybridization. II. Arrangement of the redundant gene sequences for 28 s and 18 s ribosomal RNA.

Authors: D D Brown; C S Weber
Journal: J Mol Biol Date: 1968-06-28 Impact factor: 5.469

3. Characterization of rat ribosomal DNA. The highly repetitive sequences that flank the ribosomal RNA transcription unit are homologous and contain RNA polymerase III transcription initiation sites.

Authors: D L Mroczka; B Cassidy; H Busch; L I Rothblum
Journal: J Mol Biol Date: 1984-03-25 Impact factor: 5.469

2. Restriction endonuclease mapping of ribosomal RNA genes: sequence divergence and the origin of the tetraploid treefrog Hyla versicolor.

Authors: P R Romano; J C Vaughn
Journal: Biochem Genet Date: 1986-06 Impact factor: 1.890

2 in total

The ribosomal RNA genes of three salmonid species.

1. Labeling deoxyribonucleic acid to high specific activity in vitro by nick translation with DNA polymerase I.

2. Gene linkage by RNA-DNA hybridization. II. Arrangement of the redundant gene sequences for 28 s and 18 s ribosomal RNA.

3. Characterization of rat ribosomal DNA. The highly repetitive sequences that flank the ribosomal RNA transcription unit are homologous and contain RNA polymerase III transcription initiation sites.

4. The molecular basis for length heterogeneity in ribosomal DNA from Xenopus laevis.

5. Variable patterns of total DNA and rDNA methylation in animals.

6. A membrane-filter technique for the detection of complementary DNA.

7. Distribution of ribosomal gene length variants among mouse chromosomes.

8. Complete nucleotide sequence of mouse 18 S rRNA gene: comparison with other available homologs.

9. Chromosome banding in salmonid fish: nucleolar organizer regions in Salmo and Salvelinus.

10. Sequence analysis of 28S ribosomal DNA from the amphibian Xenopus laevis.

1. Structure and organization of the rDNA intergenic spacer in lake trout (Salvelinus namaycush).

2. Restriction endonuclease mapping of ribosomal RNA genes: sequence divergence and the origin of the tetraploid treefrog Hyla versicolor.