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De Novo Protein Design: Fully Automated Sequence Selection
Bassil I. Dahiyat,
Stephen L. Mayo*
The first fully automated design and experimental validation of a
novel sequence for an entire protein is described. A computationaldesign algorithm based on physical chemical potential functionsand
stereochemical constraints was used to screen a combinatoriallibrary
of 1.9 × 1027 possible amino acid sequences for
compatibility with the designtarget, a protein motif based
on the polypeptide backbonestructure of a zinc finger domain. A BLAST
search shows that thedesigned sequence, full sequence design 1 (FSD-1), has very lowidentity to any known protein sequence. The
solution structureof FSD-1 was solved by nuclear magnetic resonance
spectroscopyand indicates that FSD-1 forms a compact well-ordered
structure,which is in excellent agreement with the design target
structure.This result demonstrates that computational methods can
performthe immense combinatorial search required for protein design,and it suggests that an unbiased and quantitative algorithm canbe used
in various structural contexts.
B I. Dahiyat, Division of Chemistry and Chemical Engineering,
California Institute of Technology, mail code 147-75, Pasadena, CA
91125, USA.
S. L. Mayo, Howard Hughes Medical institute and Division of
Biology, California Institute of Technology, mail code 147-75, Pasadena, CA 91125, USA.
*
To whom correspondence should be addressed. E-mail:
steve{at}mayo.caltech.edu
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103, 16710-16715
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310, 638-642
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G. Cheng, B. Qian, R. Samudrala, and D. Baker (2005)
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Specificity versus stability in computational protein design.
D. N. Bolon, R. A. Grant, T. A. Baker, and R. T. Sauer (2005)
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102, 12724-12729
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Bioinformatics
21, 1028-1039
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Protein sequence entropy is closely related to packing density and hydrophobicity.
H. Liao, W. Yeh, D. Chiang, R.L. Jernigan, and B. Lustig (2005)
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F. Ding, S. V. Buldyrev, and N. V. Dokholyan (2005)
Biophys. J.
88, 147-155
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101, 10284-10289
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101, 7907-7912
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99, 15926-15931
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A. G. Cochran, N. J. Skelton, and M. A. Starovasnik (2001)
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Recent improvements in prediction of protein structure by global optimization of a potential energy function.
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