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Pakistan Journal of Biological Sciences

Year: 2008 | Volume: 11 | Issue: 23 | Page No.: 2613-2618
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Authors

A. Haghighi

S. Rasti

E. Nazemalhosseini Mojarad

B. Kazemi

M. Bandehpour

Z. Nochi

H. Hooshyar

M. Rezaian

Keywords

The nucleotide sequences of Serine-Rich Entamoeba histolytica Protein (SREHP) gene have already exhibited stable and significant polymorphism in the gene studies. Serine-rich protein is also present and polymorphic in Entamoeba dispar which called SREDP. The polymorphism of the Serine-Rich Entamoeba dispar Protein (SREDP) gene among 8 isolates obtained from Iranian cyst carriers were analyzed by a nested PCR-RFLP followed by sequencing of the PCR products. From those isolates, six distinct DNA patterns were observed after PCR-RFLP of the nested PCR, whereas sequencing showed 8 different patterns among the isolates. The results demonstrate an extensive genetic variability among Iranian E. dispar isolates. The repeat-containing region of the SREDP was found extensively polymorphic in size, number and order of repeat units. Genetic diversity of Iranian E. dispar isolates based on the SREDP was more polymorphic in comparison of Serine-Rich Entamoeba histolytica Protein (SREHP) of the E. histolytica isolates as well as were different from a few known SREDP genes.
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