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Proceedings of the National Academy of Sciences of the United States of America, volume 109, issue 49, pages 19971-19976

Unique motifs and hydrophobic interactions shape the binding of modified DNA ligands to protein targets

Douglas R. Davies 1
Amy D Gelinas 2
Chi Zhang 2
John C. Rohloff 2
Jeffrey D. Carter 2
Daniel O'Connell 2, 3
Sheela M. Waugh 2
Steven K. Wolk 2
Wesley S. Mayfield 2
Alex B. Burgin 1
Thomas E. Edwards 1
Lance J. Stewart 1
Larry Gold 2
Nebojsa Janjic 2
Thale C. Jarvis 2
1
 
Emerald BioStructures, Inc., Bainbridge Island, WA 98110;
2
 
SomaLogic, Inc., Boulder, CO 80301; and
3
 
St. Andrew’s School, Middletown, DE 19709
Publication typeJournal Article
Publication date2012-11-08
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor11.1
ISSN00278424, 10916490
Multidisciplinary
Abstract

Selection of aptamers from nucleic acid libraries by in vitro evolution represents a powerful method of identifying high-affinity ligands for a broad range of molecular targets. Nevertheless, a sizeable fraction of proteins remain difficult targets due to inherently limited chemical diversity of nucleic acids. We have exploited synthetic nucleotide modifications that confer protein-like diversity on a nucleic acid scaffold, resulting in a new generation of binding reagents called SOMAmers (Slow Off-rate Modified Aptamers). Here we report a unique crystal structure of a SOMAmer bound to its target, platelet-derived growth factor B (PDGF-BB). The SOMAmer folds into a compact structure and exhibits a hydrophobic binding surface that mimics the interface between PDGF-BB and its receptor, contrasting sharply with mainly polar interactions seen in traditional protein-binding aptamers. The modified nucleotides circumvent the intrinsic diversity constraints of natural nucleic acids, thereby greatly expanding the structural vocabulary of nucleic acid ligands and considerably broadening the range of accessible protein targets.

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GOST |
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GOST Copy
Davies D. R. et al. Unique motifs and hydrophobic interactions shape the binding of modified DNA ligands to protein targets // Proceedings of the National Academy of Sciences of the United States of America. 2012. Vol. 109. No. 49. pp. 19971-19976.
GOST all authors (up to 50) Copy
Davies D. R., Gelinas A. D., Zhang C., Rohloff J. C., Carter J. D., O'Connell D., Waugh S. M., Wolk S. K., Mayfield W. S., Burgin A. B., Edwards T. E., Stewart L. J., Gold L., Janjic N., Jarvis T. C. Unique motifs and hydrophobic interactions shape the binding of modified DNA ligands to protein targets // Proceedings of the National Academy of Sciences of the United States of America. 2012. Vol. 109. No. 49. pp. 19971-19976.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1073/pnas.1213933109
UR - https://doi.org/10.1073/pnas.1213933109
TI - Unique motifs and hydrophobic interactions shape the binding of modified DNA ligands to protein targets
T2 - Proceedings of the National Academy of Sciences of the United States of America
AU - Davies, Douglas R.
AU - Gelinas, Amy D
AU - Zhang, Chi
AU - Rohloff, John C.
AU - Carter, Jeffrey D.
AU - O'Connell, Daniel
AU - Waugh, Sheela M.
AU - Wolk, Steven K.
AU - Mayfield, Wesley S.
AU - Burgin, Alex B.
AU - Edwards, Thomas E.
AU - Stewart, Lance J.
AU - Gold, Larry
AU - Janjic, Nebojsa
AU - Jarvis, Thale C.
PY - 2012
DA - 2012/11/08 00:00:00
PB - Proceedings of the National Academy of Sciences (PNAS)
SP - 19971-19976
IS - 49
VL - 109
SN - 0027-8424
SN - 1091-6490
ER -
BibTex |
Cite this
BibTex Copy
@article{2012_Davies,
author = {Douglas R. Davies and Amy D Gelinas and Chi Zhang and John C. Rohloff and Jeffrey D. Carter and Daniel O'Connell and Sheela M. Waugh and Steven K. Wolk and Wesley S. Mayfield and Alex B. Burgin and Thomas E. Edwards and Lance J. Stewart and Larry Gold and Nebojsa Janjic and Thale C. Jarvis},
title = {Unique motifs and hydrophobic interactions shape the binding of modified DNA ligands to protein targets},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
year = {2012},
volume = {109},
publisher = {Proceedings of the National Academy of Sciences (PNAS)},
month = {nov},
url = {https://doi.org/10.1073/pnas.1213933109},
number = {49},
pages = {19971--19976},
doi = {10.1073/pnas.1213933109}
}
MLA
Cite this
MLA Copy
Davies, Douglas R., et al. “Unique motifs and hydrophobic interactions shape the binding of modified DNA ligands to protein targets.” Proceedings of the National Academy of Sciences of the United States of America, vol. 109, no. 49, Nov. 2012, pp. 19971-19976. https://doi.org/10.1073/pnas.1213933109.
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