title: A cloned fragment of HeLa DNA containing consensus sequences of satellite II and III DNA hybridizes with the Drosophila P-element and with the 1.8 kb family of human KpnI fragments.
abstract: We have cloned a repetitive EcoRI fragment from the human genome which displays weak homologies with the Drosophila melanogaster transposable P-element. This cloned DNA appeared not to be a mobile element but, instead, a divergent member of human satellite II or III DNAs. We present here the first complete nucleotide sequence of a 1.797 kilobase pair (kb) satellite-like DNA. Moreover, this EcoRI satellite monomer contains a unique sequence of 49 basepairs (bp) that is devoid of the satellite consensus repeat 5'TTCCA3'. Southern hybridization analysis revealed that the cloned insert is closely related to a highly repetitive 1.8 kb KpnI family of tandemly organized satellite DNAs. Thus, the relationships among these satellite DNA families appear to be complex and may be a factor in their copy number, position and spatial organization.
mesh_terms: D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D004262:DNA Restriction Enzymes; D004276:DNA, Satellite; D015246:Deoxyribonuclease EcoRI; D015252:Deoxyribonucleases, Type II Site-Specific; D004331:Drosophila melanogaster / Q000235:genetics; D006367:HeLa Cells; D006801:Humans; D009693:Nucleic Acid Hybridization; D012091:Repetitive Sequences, Nucleic Acid; D012689:Sequence Homology, Nucleic Acid
chemical_list: D004276:DNA, Satellite; D004262:DNA Restriction Enzymes; D015246:Deoxyribonuclease EcoRI; D015252:Deoxyribonucleases, Type II Site-Specific; C029312:GGTACC-specific type II deoxyribonucleases