پديد آورندگان :
Moazeni M نويسنده , Noorbakhsh F نويسنده , Zaini F نويسنده , Kordbacheh P نويسنده , Hashemi J نويسنده , mousavi B نويسنده , Rezaie S نويسنده , Andonian L نويسنده
چكيده لاتين :
Malassezia are dimorphic, lipid-dependent yeasts, which are responsible for causing several cutaneous and
systemic conditions. Although cyclophilins (CyPs) are highly conserved cytosolic proteins that catalyze the peptidyl-prolyl
cis-trans isomerazation reaction before protein folding process, it has been suggestive of an allergen in a few numbers of
fungi such as Aspergillus fumigatus and Malassezia species. Allergenic cyclophilins are IgE-binding components, which
have been characterized in other species of Malassezia; and are considered as Mala s 6 in Malassezia sympodialis. In the
present study we tried to identify the molecular characterization of cyclophilin gene in M. furfur.
Methods: Pairs of oligonucleotide primers were designed from highly conserved regions of the gene counterparts in other
fungi. The primers were then applied to amplify the primer-specific DNA fragment. Afterward, PCR product fragments were
sequenced to be used in further analysis.
Results: About 573 nucleotides, encoding a polypeptide of 190 amino acids, have been sequenced. Sequence comparison
was performed in Gene Bank, both for the nucleotides and their deduced amino acid sequence. It revealed a significant
homology with cyclophilin genes and proteins of other eukaryotic cells. The amino acid sequence of the encoded protein
was about 86% identical to the sequence of cyclophilin protein from other fungi.
Conclusion: The molecular characterization of cyclophilin gene may open the way to disclosure of the functional characteristics
of cyclophilin and is a fundamental step for understanding the molecular basis of its pathogenesis in AEDS disease.
