the aim of this study was to use site directed mutagenesis technique to construct a vector in which serine363 and serine375 residues of the cooh-terminal portion of the μ-opioid receptor (mor) were substituted by alanine. these constructs are essential in studying g-protein coupled receptor kinase-mediated mor desensiti-zation. the nested pcr carried out for conversion of serine363 and serine37...

The determination of unknown DNA sequences around a known locus has important applications in molecular genetics, specifically in genomic walking and genome mapping. Several PCR-based methods have been reported to address this issue, but they often involve multiple, time-consuming steps. We have previously described a technique known as restriction site PCR (RS-PCR) that allows sequence acquisi...

We have analyzed nucleotide sequence variation in an approximately 900-base pair region of the human mitochondrial DNA molecule encompassing the heavy strand origin of replication and the D-loop. Our analysis has focused on nucleotide sequences available from seven humans. Average nucleotide diversity among the sequences is 1.7%, several-fold higher than estimates from restriction endonuclease ...

Hibbett, D. S., and M. J. Donoghue. 1998. Integrating phylogenetic analysis and classification in fungi. Mycologia 90:347–356. Hibbett, D. S., and Thorn, R.G. 2001. Basidiomycota: Homobasidiomycetes. Pages 121–168 in The Mycota VII, systematics and evolution, Part B (D. J. McLaughlin, E. G. McLaughlin, and P. A. Lemke, eds.) Springer Verlag, Berlin. Hopple, J. S., Jr., and R. Vilgalys. 1994. Ph...

A method based on RT-PCR and restriction endonuclease digestion of amplified PCR product was used to differentiate rabies laboratory “fixed” and “street” viruses. The primer sets from glycoprotein and nucleoprotein gene of rabies virus were used to amplify 406 and 533 bp amplicons, respectively. After amplification in RT-PCR, the PCR product was digested with HaeIII restriction endonuclease and...

Nucleotide sequences of 16S rDNA and rpoB gene of 25 bovine and 6 ovine Histophilus somni strains were determined to detect subtle differences between the host animal species. The 1465 nucleotide residues of the 16S rDNA exhibited levels of sequence similarities of 99.4% or more. The high sequence similarity of the 16S rDNA of recently described species H. somni was confirmed in the 31 strains ...

The DNA of 48 strains of adenovirus type 40 (Ad40) and of 128 strains of adenovirus type 41 (Ad41), isolated between 1971 and 1986 from various countries, was characterized by restriction enzyme analysis using nine and ten restriction endonucleases respectively. Five new DNA variants of Ad40 and 18 new DNA variants of Ad41 were detected. Most of the restriction sites which differed among the va...

Hepatitis C virus isolates which disclosed a novel genotype 1-associated restriction pattern by restriction fragment length polymorphism analysis were characterized. Except for a mother and child pair, the patients were unrelated. Sequence analysis showed a G-->A substitution leading to a new RsaI recognition site. Phylogenetic analysis revealed that these isolates constitute a novel genetic li...