The aims of the study were to detect the polymorphisms of three microsatellite sites: S11, S15, and S24 in the ovine PRNP and to asses their relationship with prion protein (PrP) genotypes in three sheep breeds. To identify 15 PrP genotypes based on polymorphisms at codons 136, 154, and 171, PCR-RFLP analyses were applied. The microsatellite sites were amplified. For each microsatellite two or ...

The generation of sequence-tagged sites (STSs) has been proposed as a unifying approach to correlating the disparate results generated by genetic and various physical techniques being used to map the human genome. We have developed an STS map to complement the existing physical and genetic maps of 4p16.3, the region containing the Huntington disease gene. A total of 18 STSs span over 4 Mb of 4p...

optimization of the condition for pcr-directed sequencing of microsatellites poly adenine (a) length polymorphisms is more difficult and sensitive compared with other common sequences. replication slippage may occur for polymerase enzyme during microsatellite amplification and direct sequencing of these pcr products will be challenging for heterozygote samples. so, the aim of this study is to i...

The analysis of multiple DNA or protein sequences (I) Sequence similarity is an important issue in sequence alignments. In molecular biology, proteins and DNA can be similar with respect to their function, their structure, or their primary sequence of amino or nucleic acids. The general rule is that sequence determines shape, and shape determines function. So when we study sequence similarity, ...

Background: To investigate the frequencies of AZF microdeletions and chromosomal abnormalities in infertile men from Northeastern China. Moreover, to compare the prevalence of these abnormalities with other countries and regions in the world. Materials and Methods: 305 infertile men were enrolled. A complete semen analysis and reproductive hormones were measured according to standard methods. M...

The function of a newly sequenced gene can be discovered by determining its sequence homology with known proteins. BLAST is the most extensively used sequence analysis program for sequence similarity search in large databases of sequences. With the advent of next generation sequencing technologies it has now become possible to study genes and their expression at a genome-wide scale through RNA-...