Background: DNA polymerase β (pol β) is a key enzyme of base excision repair pathway. It is a 1-kb gene consisting of 14 exons. Its catalytic part lies between exon 8 and exon 14. Exon 12 has a role in deoxyribonucleotide triphosphate selection for nucleotide transferase activity. Methods: Genomic DNA was isolated from ovarian carcinoma samples. Single strand conformation polymorphism...

we studied 74 patients with lebers hereditary optic neuropathy (lhon) to investigate causative mtdna mutations (g3460a, g11778a, t14484c, g4459a) in iranian lhon patients. fifty two patients carried the mitochondrial dna (mtdna) g11778a mutation, while one had the t14484c mutation 4 patients had the g3460a mutation and one had the g14459a mutation. our results showed a similarity in the pattern...

p53 tumor suppressor gene, also known as “genome guardian” is mutated in more than half of allkind of cancers. in this study we have investigated the controls of environmental ph for p53 genemutation in point of specific sequence which is prone to mutagenesis. the most probable cancerousmutations occur as point mutations in exons 5-8 of p53 gene. the 175th codon of p53 is the thirdmost mutated ...

Background: KDM3A is a key epigenetic regulator that is expressed in the testis and is required for packaging and condensation of sperm chromatin. To this point, the association of the KDM3A gene and infertility has not been studied in human. The aim of this study was to screen any new mutation in KDM3A gene to explore more details of human male infertility. Methods: In this work, 150 infertile...

background: cholera toxin b subunit (ctb) has been extensively considered as an immunogenic and adjuvant protein, but its yield of expression is not satisfactory in many studies. the aim of this study was to compare the expression of native and mutant recombinant ctb (rctb) in pqe vector. methods: ctxb fragment from vibrio cholerae o1 atcc14035 containing the substitution of mutant ctxb for ami...

an interactive application, modelface, was presented for modeller software based on windows platform. the application is able to run all steps of homology modeling including pdb to fasta generation, running clustal, model building and loop refinement. other modules of modeler including energy calculation, energy minimization and the ability to make single point mutations in the pdb structures a...