Pregled bibliografske jedinice broj: 144836
Diversity of satellite DNAs in the bivalve mollusk Donax trunculus
Diversity of satellite DNAs in the bivalve mollusk Donax trunculus // 45 years of molecular biology in Croatia ; 50 years of double helix / Ambriović-Ristov, Andreja ; Brozović, Anamaria (ur.).
Zagreb: Farmaceutsko-biokemijski fakultet Sveučilišta u Zagrebu, 2003. str. 36-36 (poster, domaća recenzija, sažetak, znanstveni)
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Naslov
Diversity of satellite DNAs in the bivalve mollusk Donax trunculus
Autori
Petrović, Vlatka ; Ugarković, Đurđica ; Plohl, Miroslav
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
45 years of molecular biology in Croatia ; 50 years of double helix
/ Ambriović-Ristov, Andreja ; Brozović, Anamaria - Zagreb : Farmaceutsko-biokemijski fakultet Sveučilišta u Zagrebu, 2003, 36-36
Skup
2nd scientific symposium with international participation: 45 years of molecular biology in Croatia ; 50 years of double helix
Mjesto i datum
Zagreb, Hrvatska, 20.11.2003. - 21.11.2003
Vrsta sudjelovanja
Poster
Vrsta recenzije
Domaća recenzija
Ključne riječi
repetitive sequences; heterochromatin; concerted evolution
Sažetak
Satellite DNAs are non-coding, tandemly repeated DNA sequences that comprise long arrays in the genome and are usually located within heterochromatic regions of chromosomes. Among marine invertebrates, satellite DNAs have so far been studied in only a couple of species including the mollusk Donax trunculus. In D. trunculus, five distinct satellite families have been described previously. They are all present in low number of copies (less than 1% of total genomic DNA) and are distinct in their monomer sequence although some families share oligonucletide motifs. We have discovered three new satellites resident within the D. trunculus genome. Even though they all share the same monomer length, only two satellites can be considered related, differing only by diagnostic point mutations, whereas the third one is dissimilar in its nucleotide sequence, GC content, and genomic abundance. These satellites are especially intriguing because of the apparent discrepancy in the level of their sequence homogeneity between the cloned subset and the entire genomic set of these satellite families. Such coexistence of highly homogenized but divergent satellite subgroups might indicate the presence of dynamic processes of satellite diversification within the genome.
Izvorni jezik
Engleski
Znanstvena područja
Biologija
