Abstract
In Xenopus laevis, genes encoding tRNAPhe, tRNATyr, tRNAMet1, tRNAAsn, tRNAAla, tRNALeu, and tRNALys are clustered within a 3.18-kb (kilobase) fragment of DNA. This fragment is tandemly repeated some 150 times in the haploid genome and its components are found outside the repeat only to a limited extent. The fragment hybridizes in situ to a single site very near the telomere on the long arm of one of the acrocentric chromosomes of the group comprising chromosomes 13-18. All the chromosomes of this group also hybridize with DNA coding for oocyte-specific 5S RNA. The tRNA gene cluster is slightly proximal to the cluster of 5S RNA genes.
MeSH Terms
Animals
Chromosome Mapping
DNA, Ribosomal/genetics
Female
Nucleic Acid Hybridization
Oocytes/analysis
Organ Specificity
RNA, Transfer/genetics
Repetitive Sequences, Nucleic Acid
Xenopus laevis/genetics
Chemicals
DNA, Ribosomal
RNA, Transfer
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Fostel J
Narayanswami S
Hamkalo B
Clarkson S G
Pardue M L
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