Biocomputational Screening and Pharmacological Studies of Gymnema sylvester in Contrast to Human CCR5 and CXCR4 Chemokine Receptors

In last twenty years DNA, profiling has become an obligatory technology, which has brought scientists towards forensic identification. Thousands of STR markers are present in human genome but only core set of loci are selected for forensic DNA and human identification. STRs have become famous in forensic labs because even low amount and degraded form can be easily typed. STRs are found in prokaryotes and eukaryotes, including humans. They appear scattered almost evenly throughout the human genome, resulting in about 3% of the genome. However, their distribution in chromosomes is not quite uniform. Usually, STRs occur in the noncoding regions, only about 8% are located in the coding regions. In humans, chromosome 19 has the highest density of STRs. On an average, one STR occurs per 2,000 bp in the human genome. On the basis of repeat units, STRs can be differentiated into different types. The repeats of STR markers are highly variable in human population. STR marker evaluation very precisely figures out individual humans at the molecular level even from very small quantities. STR locus in the identification selected is D7S820 from NIST (National Institute of Standards and Technology). Conditions for STR with the changes in temperature, magnesium ion concentration, primer and setting up, PCR of the marker used to carry out. PCR product is inspected of agarose gel. The results showed that the STR locus being investigated is detectable by PCR. PCR showed that the detection of primer and temperature conditions measured by using the fixed amount of magnesium, D7S820 locus bands are weaker than expected. Using a buffer and setting magnesium condition towards changes in primer and temperature, addition of Taq polymerase at a temperature of 94°C, bands become visible desirably.