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izvor podataka: crosbi

Characterization of interrelated sequence motifs in four satellite DNAs and their distribution in the genome of the mollusc Donax trunculus (CROSBI ID 77682)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Plohl, Miroslav ; Cornudella, Luis Characterization of interrelated sequence motifs in four satellite DNAs and their distribution in the genome of the mollusc Donax trunculus // Journal of molecular evolution, 44 (1997), 2; 189-198-x

Podaci o odgovornosti

Plohl, Miroslav ; Cornudella, Luis

engleski

Characterization of interrelated sequence motifs in four satellite DNAs and their distribution in the genome of the mollusc Donax trunculus

A family of four satellite DNAs has been characterized in the genome of the bivalve mollusc, Donax trunculus. All share HindIII sites, a similar monomer length of about 160 bp and the related oligonucleotide motifs GGTCA and GGGTTA, repeated six to 15 times within the repetitive units. The motif GGTCA is common to all members of the satellite family. It is present in three of them in both orientations, interspersed within the nonrepetitive DNA sequences. The hexanucleotide GGGTTA appears to be the main building element of one of the satellites, forming a prominent subrepeat structure in conjunction with the 5-bp motif. The former has been also found in perfect tandem repeats in a junction region adjacent to the proper satellite sequence. Southern analysis has revealed that (GGGTTA)n and/or related sequences are abundant and widely distributed in the D. trunculus genome. The distribution observed is consistent with the concurrence of the scattering of short sequence motifs throughout the genome and a spread of longer DNA segments, with concomitant formation of satellite monomer repeats. Both kinds of dispersion may have contributed to the observed complex arrangement of the HindIII satellite DNA family in Donax.

HindIII restriction; repetitive subfamilies; sequence motifs; genomic distribution; molluscs

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Podaci o izdanju

44 (2)

1997.

189-198-x

objavljeno

0022-2844

Povezanost rada

Biologija

Indeksiranost