Open AccessEvolutionary conservation of the transcribed spacer sequences of the rDNA repeat unit in three species of the genus Aspergillus.
Author(s) -
Piotr Borsuk,
Marek Gniadkowski,
Robert Kucharski,
Mariola Bisko,
Magdalena Kanabus,
Piotr P. Stępień,
Ewa Bartnik
Publication year - 1994
Publication title -
acta biochimica polonica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.452
H-Index - 78
eISSN - 1734-154X
pISSN - 0001-527X
DOI - 10.18388/abp.1994_4776
Subject(s) - aspergillus awamori , aspergillus nidulans , biology , aspergillus , homology (biology) , genetics , genus , internal transcribed spacer , ribosomal rna , botany , gene , biochemistry , enzyme , mutant
We have cloned and sequenced the two intervening transcribed spacers in the rDNA repeat unit of three Aspergillus species--A. nidulans, A. awamori and A. wentii. The A. wentii and A. awamori spacers are almost identical and share a high degree of homology with the A. nidulans spacers. All spacers have a high G-C content (66%-76%) and the potential of forming complex secondary structures, which may indicate that they play a role in the maturation of pre-rRNA molecules.