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The rational design of allosteric interactions in a monomeric protein and its applications to the construction of biosensors.

Publication ,  Journal Article
Marvin, JS; Corcoran, EE; Hattangadi, NA; Zhang, JV; Gere, SA; Hellinga, HW
Published in: Proc Natl Acad Sci U S A
April 29, 1997

Rational protein design is an emerging approach for testing general theories of structure and function. The ability to manipulate function rationally also offers the possibility of creating new proteins of biotechnological value. Here we use the design approach to test the current understanding of the structural principles of allosteric interactions in proteins and demonstrate how a simple allosteric system can form the basis for the construction of a generic biosensor molecular engineering system. We have identified regions in Escherichia coli maltose-binding protein that are predicted to be allosterically linked to its maltose-binding site. Environmentally sensitive fluorophores were covalently attached to unique thiols introduced by cysteine mutations at specific sites within these regions. The fluorescence of such conjugates changes cooperatively with respect to maltose binding, as predicted. Spatial separation of the binding site and reporter groups allows the intrinsic properties of each to be manipulated independently. Provided allosteric linkage is maintained, ligand binding can therefore be altered without affecting transduction of the binding event by fluorescence. To demonstrate applicability to biosensor technology, we have introduced a series of point mutations in the maltose-binding site that lower the affinity of the protein for its ligand. These mutant proteins have been combined in a composite biosensor capable of measuring substrate concentration within 5% accuracy over a concentration range spanning five orders of magnitude.

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Published In

Proc Natl Acad Sci U S A

DOI

ISSN

0027-8424

Publication Date

April 29, 1997

Volume

94

Issue

9

Start / End Page

4366 / 4371

Location

United States

Related Subject Headings

  • Protein Conformation
  • Mutation
  • Monosaccharide Transport Proteins
  • Models, Molecular
  • Maltose-Binding Proteins
  • Maltose
  • Fluorescent Dyes
  • Escherichia coli Proteins
  • Computer Simulation
  • Carrier Proteins
 

Citation

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Marvin, J. S., Corcoran, E. E., Hattangadi, N. A., Zhang, J. V., Gere, S. A., & Hellinga, H. W. (1997). The rational design of allosteric interactions in a monomeric protein and its applications to the construction of biosensors. Proc Natl Acad Sci U S A, 94(9), 4366–4371. https://doi.org/10.1073/pnas.94.9.4366
Marvin, J. S., E. E. Corcoran, N. A. Hattangadi, J. V. Zhang, S. A. Gere, and H. W. Hellinga. “The rational design of allosteric interactions in a monomeric protein and its applications to the construction of biosensors.Proc Natl Acad Sci U S A 94, no. 9 (April 29, 1997): 4366–71. https://doi.org/10.1073/pnas.94.9.4366.
Marvin JS, Corcoran EE, Hattangadi NA, Zhang JV, Gere SA, Hellinga HW. The rational design of allosteric interactions in a monomeric protein and its applications to the construction of biosensors. Proc Natl Acad Sci U S A. 1997 Apr 29;94(9):4366–71.
Marvin, J. S., et al. “The rational design of allosteric interactions in a monomeric protein and its applications to the construction of biosensors.Proc Natl Acad Sci U S A, vol. 94, no. 9, Apr. 1997, pp. 4366–71. Pubmed, doi:10.1073/pnas.94.9.4366.
Marvin JS, Corcoran EE, Hattangadi NA, Zhang JV, Gere SA, Hellinga HW. The rational design of allosteric interactions in a monomeric protein and its applications to the construction of biosensors. Proc Natl Acad Sci U S A. 1997 Apr 29;94(9):4366–4371.
Journal cover image

Published In

Proc Natl Acad Sci U S A

DOI

ISSN

0027-8424

Publication Date

April 29, 1997

Volume

94

Issue

9

Start / End Page

4366 / 4371

Location

United States

Related Subject Headings

  • Protein Conformation
  • Mutation
  • Monosaccharide Transport Proteins
  • Models, Molecular
  • Maltose-Binding Proteins
  • Maltose
  • Fluorescent Dyes
  • Escherichia coli Proteins
  • Computer Simulation
  • Carrier Proteins