Cloning of full-length cDNA of Microsporum canis membrane protein PQ-loop repeat protein gene / 中华皮肤科杂志

ABSTRACT

ObjectiveTo clone the full-length cDNA of Microsporum canis membrane protein PQ-loop repeat protein(PQ-LRP) gene,so as to investigate the roles of PQ-LRP in the pathogenesis of tinea capitis.MethodsA Microsporum canis strain(A518) from a patient with tinea capitis served as the experimental strain.Rapid cDNA end amplification(RACE) was performed to clone the full length cDNA sequence of PQLRP gene.Bioinformatics methods were used to make a preliminary functional analysis of the gene.Results The cDNA of PQ-LRP gene was obtained with a full length of 1522 bp,including the 5' untranslated region (49 bp),coding region(1080 bp) and 3' untranslated region(393 bp).The coding region encoded a protein precursor including 359 amino acid residues.The cloned cDNA of PQ-LRP gene shared an 81％ nucleotide identity with that of Trichophyton tonsurans and a 79％ nucleotide identity with that of Trichophyton rubrum.Conclusions The full-lengthcDNA of Microsporumcanis membraneproteinPQ-LRP gene hasbeen successfully cloned,which will provide an important basis for further researches into the roles of PQ-LRP in Microsporum canis-associated diseases.