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We reinvestigated the lampbrush chromosomes of Xenopus laevis and found them well suited for the study or transcription by in situ hybridization to nascent RNA transcripts. Using this technique, we analyzed the transcription of three repetitive sequences that do not show any sequence homology and that differ in their degree of interspersion. We found that they are located on different parts of the chromosomes: two are clustered, one is interspersed. All three of these sequences are transcribed at the lampbrush chromosome stage and transcripts from both strands of each sequence can be detected. The amount of transcription is apparently not proportional to the number of copies of the repetitive sequence at a given chromosomal locus, suggesting that other sequences are involved in the regulation of their transcription.
Angelier,
[Transcription complexes with nucleolar and chromosomal origins in oocytes of Pleurodeles waltlii and P. poireti (amphibia, urodela) (author's transl)].
1975, Pubmed
Angelier,
[Transcription complexes with nucleolar and chromosomal origins in oocytes of Pleurodeles waltlii and P. poireti (amphibia, urodela) (author's transl)].
1975,
Pubmed
Bünemann,
Base specific fractionation of double stranded DNA: affinity chromatography on a novel type of adsorbant.
1978,
Pubmed
Callan,
The Croonian Lecture, 1981. Lampbrush chromosomes.
1982,
Pubmed
Davidson,
Repetitive sequence transcripts in development.
1982,
Pubmed
Diaz,
Transcripts from both strands of a satellite DNA occur on lampbrush chromosome loops of the newt Notophthalmus.
1981,
Pubmed
Dumont,
Oogenesis in Xenopus laevis (Daudin). I. Stages of oocyte development in laboratory maintained animals.
1972,
Pubmed
,
Xenbase
Gall,
Histone genes are located at the sphere loci of newt lampbrush chromosomes.
1981,
Pubmed
Macgregor,
In situ hybridization of highly repetitive DNA to chromosomes of Triturus cristatus.
1979,
Pubmed
Miller,
Morphological studies of transcription.
1972,
Pubmed
Müller,
The lampbrush chromosomes of Xenopus laevis (Daudin).
1974,
Pubmed
,
Xenbase
Pardue,
Nucleic acid hybridization to the DNA of cytological preparations.
1975,
Pubmed
Pukkila,
Identification of the lampbrush chromosome loops which transcribe 5S ribosomal RNA in Notophthalmus (Triturus) viridescens.
1975,
Pubmed
,
Xenbase
Spohr,
Organization and sequence analysis of a cluster of repetitive DNA elements from Xenopus laevis.
1981,
Pubmed
,
Xenbase
Varley,
Cytological evidence of transcription of highly repeated DNA sequences during the lampbrush stage in Triturus cristatus carnifex.
1980,
Pubmed
Varley,
Satellite DNA is transcribed on lampbrush chromosomes.
1980,
Pubmed
