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Nucleotide sequence of mouse satellite DNA
Nucleic Acids Research
|February 11, 1981
Summary
Researchers sequenced mouse satellite DNA, revealing a 234 bp repeat unit. This DNA sequence shows internal repetitions and has implications for understanding the evolution of mouse satellite DNA.
Area of Science:
- Molecular Biology
- Genomics
- Evolutionary Biology
Background:
- Mouse satellite DNA is a highly repetitive DNA component.
- Understanding its sequence is crucial for studying genome evolution and organization.
Purpose of the Study:
- To determine the nucleotide sequence of uncloned mouse satellite DNA.
- To analyze the structure and evolutionary implications of its repeat unit.
Main Methods:
- Analysis of Sau96I restriction fragments corresponding to the satellite DNA repeat unit.
- DNA sequencing of monomeric and dimeric fragments.
Main Results:
- An unambiguous 234 bp sequence for the mouse satellite DNA repeat unit was obtained.
- Dimeric fragments suggest a low level of divergence between monomer sequences.
- The monomer sequence exhibits internal repetitiousness, composed of eight diverged subrepeats.
Conclusions:
- The determined sequence provides a detailed understanding of mouse satellite DNA structure.
- The internal repetitive nature and divergence patterns offer insights into the evolution of satellite DNA.
