acetyl-coenzyme a carboxylase α (acc-alpha) is considered as the key regulatory enzyme in fatty acid biosynthesis. acc-alpha gene is located on caprine chromosome 11 and is polymorphic in many goat breeds. in the current study, we aimed to find possible single nucleotide polymorphisms (snps) in the exon 1 region of the acc-alpha gene in iranian mahabadi goat breed. genomic dna was extracted fro...

Background: The isolation of the TEM gene in Pseudomonas aeruginosa and Escherichia coli and the antibiotic resistance pattern provides useful information on the epidemiology and factors involved in these infections. Aim: The aim of this study was to evaluate antibiotic resistance and abundance of a beta-lactamase gene (TEM) in P.aeruginosa and E.coli isolated from clinical specimens by the po...

taq dna polymerase is widely used in laboratories and for this reason many investigators have focused their attention on understanding the role of various regions and amino acids in this enzyme. o-helix is a part of taq polymerase suggested to play an important role in the enzyme fidelity. the influence of asn666 in this helix on the enzyme function has never been investigated, and therefore by...

The aim of this study was to determine the frequency of enterotoxigenic and enteroaggregative strains ofEscherichia coli in chicken carcasses by polymerase chain reaction (PCR). In this study 63 strains of E. coliwere isolated from 110 samples of chicken carcasses during processing after chilling in the poultry slaughterhouse of Shahrekord. Polymerase chain reaction assays were used to detect t...

ThirtyFrieswal lactating cows were screened for clinical and subclinical mastitis and subsequently classified into healthy, subclinically affected and clinically affected groups each group comprising of 10 cows. Polymorphism of cow lactoferrin (LTF) gene promoter was determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The results showed that LFT gene pro...

The primary aim of this study was to investigate the status of RANKL6-7 gene polymorphism in patients with chronic (mild, moderate, severe) and aggressive periodontitis as well as healthy controls. We examined80 patients for the RANKL6-7 polymorphisms (rs1054016 and rs9567000). Polymorphism was determinedby polymerase chain reaction (PCR) followed by direct sequencing. No statistica...

abrin known as ribosome inactivating protein’s (rip) it is a high cytotoxic plant protein. high lethality and low cost and easy access to plant and seeds lead to this toxin used in crimes and terrorist acts. because obtaining purified toxins requires advanced laboratory equipment and complex procedures, so, it appears that the perpetrators of such crimes use crude extracts. as a result, remaini...