Warning: Undefined array key "mm" in /www/wwwroot/www.ai-bt.com/si.php on line 10 Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /www/wwwroot/www.ai-bt.com/si.php on line 10 More ribosomal spacer sequences from Xenopus laevis.

Literature DB >> 7003549

More ribosomal spacer sequences from Xenopus laevis.

Abstract

The base sequence analysis of a Xenopus laevis ribosomal DNA repeat (7) has been extended to cover almost the entire non-transcribed and external transcribed spacer. A compilation of these sequences is presented. All the repetitive and non-repetitive sequence elements of the spacer are identified and their evolution discussed. Comparison of the X.laevis and S.cerevisiae (25,26) ribosomal DNAs shows about 80% sequence conservation in the 18S gene but no sequence conservation, from the available data, in the external transcribed spacer. The sequence coding for the 3' terminus of the X.laevis 40S ribosomal precursor RNA is presented and its structural features analyzed.

Entities: Species

Mesh：

Substances：

Year: 1980 PMID： 7003549 PMCID： PMC327284 DOI： 10.1093/nar/8.3.467

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

30 in total

1. Phosphorylation of double-stranded DNAs by T4 polynucleotide kinase.

Authors: J R Lillehaug; R K Kleppe; K Kleppe
Journal: Biochemistry Date: 1976-05-04 Impact factor: 3.162

2. Secondary structure maps of ribosomal RNA and DNA. I. Processing of Xenopus laevis ribosomal RNA and structure of single-stranded ribosomal DNA.

Authors: P K Wellauer; I B Dawid
Journal: J Mol Biol Date: 1974-10-25 Impact factor: 5.469

3. Secondary structure maps of ribosomal RNA. II. Processing of mouse L-cell ribosomal RNA and variations in the processing pathway.

Authors: P K Wellauer; I B Dawid; D E Kelley; R P Perry
Journal: J Mol Biol Date: 1974-10-25 Impact factor: 5.469

4. Improved estimation of secondary structure in ribonucleic acids.

Authors: I Tinoco; P N Borer; B Dengler; M D Levin; O C Uhlenbeck; D M Crothers; J Bralla
Journal: Nat New Biol Date: 1973-11-14

5. Enzymatic end-to end joining of DNA molecules.

Authors: P E Lobban; A D Kaiser
Journal: J Mol Biol Date: 1973-08-15 Impact factor: 5.469

6. Transmission of sex cells of one species through the body of a second species in the genus Xenopus. II. Interspecific matings.

Authors: A W Blackler; C A Gecking
Journal: Dev Biol Date: 1972-03 Impact factor: 3.582

7. Evolution of the transcription unit of ribosomal RNA.

Authors: R P Perry; T Y Cheng; J J Freed; J R Greenberg; D E Kelley; K D Tartof
Journal: Proc Natl Acad Sci U S A Date: 1970-03 Impact factor: 11.205

8. [Duplications of subunits of chromosome DNA during the evolution of Chironomus thummi].

Authors: H G Keyl
Journal: Chromosoma Date: 1965 Impact factor: 4.316

9. An exonuclease induced by bacteriophage lambda. I. Preparation of the crystalline enzyme.

Authors: J W Little; I R Lehman; A D Kaiser
Journal: J Biol Chem Date: 1967-02-25 Impact factor: 5.157

10. Preferential transcription of Xenopus laevis ribosomal RNA in interspecies hybrids between Xenopus laevis and Xenopus mulleri.

Authors: T Honjo; R H Reeder
Journal: J Mol Biol Date: 1973-10-25 Impact factor: 5.469

44 in total

1. DNA looping in the RNA polymerase I enhancesome is the result of non-cooperative in-phase bending by two UBF molecules.

Authors: V Y Stefanovsky; G Pelletier; D P Bazett-Jones; C Crane-Robinson; T Moss
Journal: Nucleic Acids Res Date: 2001-08-01 Impact factor: 16.971

2. Is higher-order structure conserved in eukaryotic ribosomal DNA intergenic spacers?

Authors: G D Baldridge; M W Dalton; A M Fallon
Journal: J Mol Evol Date: 1992-12 Impact factor: 2.395

3. Transcription and tyranny in the nucleolus: the organization, activation, dominance and repression of ribosomal RNA genes.

Authors: Craig S Pikaard
Journal: Arabidopsis Book Date: 2002-08-12

More ribosomal spacer sequences from Xenopus laevis.

1. Phosphorylation of double-stranded DNAs by T4 polynucleotide kinase.

2. Secondary structure maps of ribosomal RNA and DNA. I. Processing of Xenopus laevis ribosomal RNA and structure of single-stranded ribosomal DNA.

3. Secondary structure maps of ribosomal RNA. II. Processing of mouse L-cell ribosomal RNA and variations in the processing pathway.

4. Improved estimation of secondary structure in ribonucleic acids.

5. Enzymatic end-to end joining of DNA molecules.

6. Transmission of sex cells of one species through the body of a second species in the genus Xenopus. II. Interspecific matings.

7. Evolution of the transcription unit of ribosomal RNA.

8. [Duplications of subunits of chromosome DNA during the evolution of Chironomus thummi].

9. An exonuclease induced by bacteriophage lambda. I. Preparation of the crystalline enzyme.

10. Preferential transcription of Xenopus laevis ribosomal RNA in interspecies hybrids between Xenopus laevis and Xenopus mulleri.

1. DNA looping in the RNA polymerase I enhancesome is the result of non-cooperative in-phase bending by two UBF molecules.

2. Is higher-order structure conserved in eukaryotic ribosomal DNA intergenic spacers?

3. Transcription and tyranny in the nucleolus: the organization, activation, dominance and repression of ribosomal RNA genes.

4. Heterogeneity of pumpkin ribosomal DNA.

5. A new 3'-terminus for Xenopus laevis 28S ribosomal RNA.

Review 6. Noisy silence: non-coding RNA and heterochromatin formation at repetitive elements.

7. Replication fork barriers in the Xenopus rDNA.

8. Transcription in cloned spacers of Xenopus laevis ribosomal DNA.

9. The origin of the rRNA precursor from Xenopus borealis, analysed in vivo and in vitro.

10. The in vivo and in vitro initiation site for transcription of the rRNA operon of Saccharomyces carlsbergensis.