Amplification of GC-rich Putative Mouse PeP Promoter Using Betaine and DMSO in Ammonium Sulfate Polymerase Chain Reaction Buffer

Overview

Journal Avicenna J Med Biotechnol

Specialty Biomedical Engineering

Date 2013 Feb 15

PMID 23408119

Citations 3

Authors

Tahere Seifi

Kamran Ghaedi

Ahmad Salamian

Sommayeh Tanhaei

Forouzan Safari

Zohreh Hojati

Manuchehr Tavassoli

Hossein Baharvand

Mohammad-Hossein Nasr Esfahani

Affiliations

Soon will be listed here.

Abstract

Background: Recently, we have shown that peroxisomal protein expression was induced upon retinoic acid treatment in mouse embryonic stem cells during the process of neurogenesis. Thus, characterization of the respective promoter could elucidate the molecular aspects of transcriptional regulation of this gene.

Methods: Using the conventional software programs for promoter prediction, a putative promoter region was identified approximately 561 bp upstream of the peroxisomal protein coding sequence. In order to clone this region with a GC-content of 71.01%, a cocktail of ammonium sulfate buffer supplied with two additive components, betaine and dimethyl sulfoxide, and a high concentration of MgCl(2) was used.

Results: The modulated polymerase chain reaction composition significantly improved the amplification of GC-rich DNA target sequences. Improved amplification of this region was due to reduction in the formation of secondary structures by the GC-rich region.

Conclusion: Therefore, this polymerase chain reaction composition could be generally used to facilitate the amplification of other GC-rich DNA sequences as verified by amplification of different GC rich regions.

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