DMSO and betaine greatly improve amplification of GC-rich constructs in de novo synthesis.

In Synthetic Biology, de novo synthesis of GC-rich constructs poses a major challenge because of secondary structure formation and mispriming. While there are many web-based tools for codon optimizing difficult regions, no method currently exists that allows for potentially phenotypically important...

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Main Authors: Michael A Jensen, Marilyn Fukushima, Ronald W Davis
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2010-06-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC2883997?pdf=render
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author Michael A Jensen
Marilyn Fukushima
Ronald W Davis
author_facet Michael A Jensen
Marilyn Fukushima
Ronald W Davis
author_sort Michael A Jensen
collection DOAJ
description In Synthetic Biology, de novo synthesis of GC-rich constructs poses a major challenge because of secondary structure formation and mispriming. While there are many web-based tools for codon optimizing difficult regions, no method currently exists that allows for potentially phenotypically important sequence conservation. Therefore, to overcome these limitations in researching GC-rich genes and their non-coding elements, we explored the use of DMSO and betaine in two conventional methods of assembly and amplification. For this study, we compared the polymerase (PCA) and ligase-based (LCR) methods for construction of two GC-rich gene fragments implicated in tumorigenesis, IGF2R and BRAF. Though we found no benefit in employing either DMSO or betaine during the assembly steps, both additives greatly improved target product specificity and yield during PCR amplification. Of the methods tested, LCR assembly proved far superior to PCA, generating a much more stable template to amplify from. We further report that DMSO and betaine are highly compatible with all other reaction components of gene synthesis and do not require any additional protocol modifications. Furthermore, we believe either additive will allow for the production of a wide variety of GC-rich gene constructs without the need for expensive and time-consuming sample extraction and purification prior to downstream application.
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spelling doaj.art-505a4e8eecf9401b8d5e87419f55f7752022-12-22T00:07:34ZengPublic Library of Science (PLoS)PLoS ONE1932-62032010-06-0156e1102410.1371/journal.pone.0011024DMSO and betaine greatly improve amplification of GC-rich constructs in de novo synthesis.Michael A JensenMarilyn FukushimaRonald W DavisIn Synthetic Biology, de novo synthesis of GC-rich constructs poses a major challenge because of secondary structure formation and mispriming. While there are many web-based tools for codon optimizing difficult regions, no method currently exists that allows for potentially phenotypically important sequence conservation. Therefore, to overcome these limitations in researching GC-rich genes and their non-coding elements, we explored the use of DMSO and betaine in two conventional methods of assembly and amplification. For this study, we compared the polymerase (PCA) and ligase-based (LCR) methods for construction of two GC-rich gene fragments implicated in tumorigenesis, IGF2R and BRAF. Though we found no benefit in employing either DMSO or betaine during the assembly steps, both additives greatly improved target product specificity and yield during PCR amplification. Of the methods tested, LCR assembly proved far superior to PCA, generating a much more stable template to amplify from. We further report that DMSO and betaine are highly compatible with all other reaction components of gene synthesis and do not require any additional protocol modifications. Furthermore, we believe either additive will allow for the production of a wide variety of GC-rich gene constructs without the need for expensive and time-consuming sample extraction and purification prior to downstream application.http://europepmc.org/articles/PMC2883997?pdf=render
spellingShingle Michael A Jensen
Marilyn Fukushima
Ronald W Davis
DMSO and betaine greatly improve amplification of GC-rich constructs in de novo synthesis.
PLoS ONE
title DMSO and betaine greatly improve amplification of GC-rich constructs in de novo synthesis.
title_full DMSO and betaine greatly improve amplification of GC-rich constructs in de novo synthesis.
title_fullStr DMSO and betaine greatly improve amplification of GC-rich constructs in de novo synthesis.
title_full_unstemmed DMSO and betaine greatly improve amplification of GC-rich constructs in de novo synthesis.
title_short DMSO and betaine greatly improve amplification of GC-rich constructs in de novo synthesis.
title_sort dmso and betaine greatly improve amplification of gc rich constructs in de novo synthesis
url http://europepmc.org/articles/PMC2883997?pdf=render
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