DNA Melting point Article

Abstract

The melting temperatures (Tm) is definitely the temperature at which one-half of the particular DNA duplex can dissociate and become single strand DNA. The stability of a primer-template DNA duplex can be measured by the Tm. Primers with shedding temperatures inside the range of 52-58В°C generally create better results than primers with lower shedding temperatures. As the annealing temperature can go as high as 72В°C, primers with shedding temperatures previously mentioned 65В°C include a higher likelihood of secondary annealing. Introduction

The nucleic acids DNA and RNA happen to be characterized by the capacity of an individual molecular follicle to specifically pair with a second strand making use of the intrinsic integrating capabilities with the nucleotide bases to form a double stranded, helical structure. The soundness of the twice stranded framework is crucial for many aspects of nucleic acid solution metabolism. Follicle separation need to occur pertaining to DNA replication, for GENETICS repair and then for the transcribing of GENETICS into RNA. Likewise, the annealing of complementary sequences is equally important. Local, dual stranded areas are found in the functional classes of RNA molecules and play vital roles inside the formation of structures which might be required for the molecule's function. Additionally , the stability of nucleic acid hybrids is playing an important role in biomedical diagnostic applications. The specificity of hybridization are at the key of many molecular biology techniques including the polymerase chain response (PCR), GENETICS sequencing, Southern blotting, and emerging applications such as microarray technology. The soundness of the cross formed involving the two hair strands can be evaluated by a number of different biophysical methods. One prevalent approach is the use of spectrophotometric methods. Nucleic acids absorb strongly in the uv place (around 260 nm) and this absorbance increases upon the disassociation of the strands. This hyperchromicity results from the unstacking of the nucleotide bases....

References: http://web.ornl.gov/~webworks/cpr/misc/107675_.pdf

http://www.bionity.com/en/encyclopedia/DNA_melting.html

http://en.wikipedia.org/wiki/Nucleic_acid_thermodynamics

http://openwetware.org/images/1/1d/MeltDNA_Bioinformatics_India.pdf

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