Single-strand conformational polymorphism analysis of an affected male with Pelizaeus-Merzbacher disease (PMD) showed a slight change in mobility of amplified exon 5 of the proteolipid protein (PLP) gene. The exon was sequenced and a G-->A transition at codon 216 was found. This mutation eliminates a BstNI restriction site and creates a MaeI restriction site. In 1989, Gencic et al. reported a m...

Source/Description of Clone: Clone pALP13-8 is a single copy 750 bp EcoRV fragment, 0.9 kb 3' of exon 4, subcloned from a 6.6 kb BamHI fragment containing the complete human c-fos oncogene (FOS) (1). Polymorphisms: are detected with TaqI (A alleles) and BstNI (B alleles) (see Figure). A) TaqI: Presence of a 1.6 kb fragment or its allele, a 0.6 kb fragment. B) BstNI: Presence of an 0.85 kb fragm...

Twenty-two infectious bursal disease virus (IBDV) strains were examined using the reverse transcriptase/polymerase chain reaction-restriction endonuclease (RT/PCR-RE) assay. A 394-bp fragment of the VP2 gene was amplified and tested for six different restriction enzyme sites. Although the EcoRII enzyme was used in previous RT/PCR-RE assays, results obtained using the isoschizomer BstNI were mor...

Type 2 diabetes mellitus (T2DM) is characterized by three major metabolic abnormalities: impaired insulin-stimulated glucose uptake in muscle and adipose tissues, alterations in glucose-stimulated insulin secretion, and increased hepatic glucose production. Both genetic and environmental factors contribute to its development. The insulin gene (INS), insulin receptor gene (INSR), and insulin rec...

A recombinant plasmid was constructed with six synthetic DNA oligomers such that the DNA sequence corresponding to yeast tRNA(Phe) is flanked by a T7 promoter and a BstNI restriction site. Runoff transcription of the BstNI-digested plasmid with T7 RNA polymerase gives an unmodified tRNA of the expected sequence having correct 5' and 3' termini. This tRNA(Phe) transcript can be specifically amin...

A transfer RNA complete devoid of modified nucleosides was synthesized by in vitro transcription, and some of its properties in aminoacylation and protein synthesis in vitro were studied. For this purpose, a plasmid was constructed which contained a glycine tRNA gene from Mycoplasma mycoides under the promoter of the T7 RNA polymerase, as well as a BstNI restriction site at the 3'-end of the tR...

APC cleavage site. The first one is a new factor V mutation associated with APC resistance (factor V Cambridge, G1091 = C mutation, Arg306 = Thr substitution). This mutation was found in a family with a strong history of thrombosis. Our group has independently described another novel mutation (A1090 = G) that results in Arg306 = Gly substitution but it is, however, not associated with APC resis...

We have analyzed DNA methylation of plastid DNA from fully ripened red fruits, green mature fruits, and green leaves of tomato (Lycopersicon esculentum var. Firstmore). Essentially identical restriction profiles were obtained between chromoplast and chloroplast DNAs by EcoRI digestion. BstNI/EcoRII and HpaII/MspI are pairs of isoschizomers that can discriminate between methylated and unmethylat...

background: genetic factors associated with cancer have been widely investigated and several polymorphisms have been connected with breast cancer. breast cancer (bc) can be considered one of the most popular reasons of death among women. bc, likewise, is the second cause of death in iran. the present research aims at determining the frequency of the fibroblast growth factor receptor (fgfr) gene ...