Identification of a human clustered G + C-rich DNA family of repeats (Sau3A family)

R. Meneveri, A. Agresti, G. Della Valle, D. Talarico, A. G. Siccardi, E. Ginelli

Research output: Contribution to journalArticle

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Abstract

Sau3A digestion of human G + C-rich DNA molecules yields discrete bands of approximately 70 and 140 base-pairs, under-represented in A + T-rich DNA molecules and in total DNA. We have cloned the 70 base-pair band in a plasmid vector and isolated a representative recombinant clone that identifies a new human family of repeats, the Sau3A family. The new family has been characterized for a number of parameters: (1) genomic organization; (2) reiteration frequency; (3) sequence analysis; and (4) distribution in a human genomic library. The Sau3A sequence (68 base-pairs in length, 53% G + C) is present in approximately 4 × 104 copies/haploid genome; the family is characterized by a cluster organization and is confined to a limited fraction (0.5%) of phages of a human genomic library. Southern blot hybridizations of the cloned sequence to restriction digests of total human DNA and of isolated genomic clones does not show the involvement of Sau3A blocks in long-range periodicities for any of the enzymes tested. The data suggest either a high sequence variability in the family or a complex organization of Sau3A sequence domains.

Original languageEnglish
Pages (from-to)483-489
Number of pages7
JournalJournal of Molecular Biology
Volume186
Issue number3
DOIs
Publication statusPublished - Dec 5 1985

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Forensic Anthropology
Base Pairing
DNA
Genomic Library
Clone Cells
Haploidy
Periodicity
Southern Blotting
Bacteriophages
Sequence Analysis
Digestion
Plasmids
Organizations
Genome
Enzymes

ASJC Scopus subject areas

  • Virology

Cite this

Identification of a human clustered G + C-rich DNA family of repeats (Sau3A family). / Meneveri, R.; Agresti, A.; Valle, G. Della; Talarico, D.; Siccardi, A. G.; Ginelli, E.

In: Journal of Molecular Biology, Vol. 186, No. 3, 05.12.1985, p. 483-489.

Research output: Contribution to journalArticle

Meneveri, R. ; Agresti, A. ; Valle, G. Della ; Talarico, D. ; Siccardi, A. G. ; Ginelli, E. / Identification of a human clustered G + C-rich DNA family of repeats (Sau3A family). In: Journal of Molecular Biology. 1985 ; Vol. 186, No. 3. pp. 483-489.
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