Analyzing Secondary Structure Patterns in DNA Aptamers Identified via CompELS

In contrast to sophisticated high-throughput sequencing tools for genomic DNA, analytical tools for comparing secondary structure features between multiple single-stranded DNA sequences are less developed. For single-stranded nucleic acid ligands called aptamers, secondary structure is widely though...

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Main Authors: Richard Sullivan, Mary Catherine Adams, Rajesh R. Naik, Valeria T. Milam
Format: Article
Language:English
Published: MDPI AG 2019-04-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/24/8/1572
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author Richard Sullivan
Mary Catherine Adams
Rajesh R. Naik
Valeria T. Milam
author_facet Richard Sullivan
Mary Catherine Adams
Rajesh R. Naik
Valeria T. Milam
author_sort Richard Sullivan
collection DOAJ
description In contrast to sophisticated high-throughput sequencing tools for genomic DNA, analytical tools for comparing secondary structure features between multiple single-stranded DNA sequences are less developed. For single-stranded nucleic acid ligands called aptamers, secondary structure is widely thought to play a pivotal role in driving recognition-based binding activity between an aptamer sequence and its specific target. Here, we employ a competition-based aptamer screening platform called CompELS to identify DNA aptamers for a colloidal target. We then analyze predicted secondary structures of the aptamers and a large population of random sequences to identify sequence features and patterns. Our secondary structure analysis identifies patterns ranging from position-dependent score matrixes of individual structural elements to position-independent consensus domains resulting from global alignment.
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spelling doaj.art-a98c02dfcbf14ca5980366f6978c0fce2022-12-22T03:14:57ZengMDPI AGMolecules1420-30492019-04-01248157210.3390/molecules24081572molecules24081572Analyzing Secondary Structure Patterns in DNA Aptamers Identified via CompELSRichard Sullivan0Mary Catherine Adams1Rajesh R. Naik2Valeria T. Milam3School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Dr. NW, Atlanta, GA 30332-0245, USASchool of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Dr. NW, Atlanta, GA 30332-0245, USA711 Human Performance Wing, Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USASchool of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Dr. NW, Atlanta, GA 30332-0245, USAIn contrast to sophisticated high-throughput sequencing tools for genomic DNA, analytical tools for comparing secondary structure features between multiple single-stranded DNA sequences are less developed. For single-stranded nucleic acid ligands called aptamers, secondary structure is widely thought to play a pivotal role in driving recognition-based binding activity between an aptamer sequence and its specific target. Here, we employ a competition-based aptamer screening platform called CompELS to identify DNA aptamers for a colloidal target. We then analyze predicted secondary structures of the aptamers and a large population of random sequences to identify sequence features and patterns. Our secondary structure analysis identifies patterns ranging from position-dependent score matrixes of individual structural elements to position-independent consensus domains resulting from global alignment.https://www.mdpi.com/1420-3049/24/8/1572aptamerssingle-stranded DNAnucleic acid ligandssecondary structure
spellingShingle Richard Sullivan
Mary Catherine Adams
Rajesh R. Naik
Valeria T. Milam
Analyzing Secondary Structure Patterns in DNA Aptamers Identified via CompELS
Molecules
aptamers
single-stranded DNA
nucleic acid ligands
secondary structure
title Analyzing Secondary Structure Patterns in DNA Aptamers Identified via CompELS
title_full Analyzing Secondary Structure Patterns in DNA Aptamers Identified via CompELS
title_fullStr Analyzing Secondary Structure Patterns in DNA Aptamers Identified via CompELS
title_full_unstemmed Analyzing Secondary Structure Patterns in DNA Aptamers Identified via CompELS
title_short Analyzing Secondary Structure Patterns in DNA Aptamers Identified via CompELS
title_sort analyzing secondary structure patterns in dna aptamers identified via compels
topic aptamers
single-stranded DNA
nucleic acid ligands
secondary structure
url https://www.mdpi.com/1420-3049/24/8/1572
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AT rajeshrnaik analyzingsecondarystructurepatternsindnaaptamersidentifiedviacompels
AT valeriatmilam analyzingsecondarystructurepatternsindnaaptamersidentifiedviacompels