Modified-affinity streptavidin

Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Recombinant dna technique included in method of making a...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

435471, 4352523, 4353201, 530350, 530413, 536 237, C12N 1509, C12N 1531, C07K 1436, C07K 122

Patent

active

061657506

ABSTRACT:
Streptavidin tetramers have at least one monomer containing an amino acid modification that produces a reduced binding affinity for biotin, a modified off-rate, a modified on-rate, or an altered binding enthalpy. Polynucleotides encoding the modified monomers are also provided. The modified streptavidin and chimeric streptavidin molecules are useful in methods of bioseparations and cell sorting, imaging, drug delivery, and diagnostics.

REFERENCES:
patent: 4839293 (1989-06-01), Cantor et al.
patent: 5135876 (1992-08-01), Andrade et al.
patent: 5168049 (1992-12-01), Meade et al.
patent: 5215927 (1993-06-01), Berenson et al.
patent: 5252466 (1993-10-01), Cronan, Jr.
patent: 5272254 (1993-12-01), Meade et al.
patent: 5489528 (1996-02-01), Kopetzki et al.
patent: 5672691 (1997-09-01), Kopetzki et al.
Bayer, E. A., et al., Analytical Biochemistry, vol. 154, "A sensitive assay for biotin, avidin and streptavidin", pp. 367-370, 1986.
Argarana et al., "Molecule Cloning and Nucleotide Sequence of the Streptavidin Gene," Nucl. Acids Res. 14:1871-1882 (1986).
Chilkoti et al., Proceedings of Nat'l. Acad. Sci., USA, vol. 92:1754-1758 (1995).
Erijman and Weber, "Oligomeric Protein Associations: Transition from Stochastic to Deterministic Equilbrium," Biochemistry 30: 1595-1599 (1991).
Erijman and Weber, "Use of Sensitized Flourescence for the Study of the Exchange of Subunits in Protein Aggregates," Photochem. Photobiol. 57:411-415 (1993).
Gitlin et al., Biochem J. 256:279-282 (1988).
Hendrickson et al., "Crystal Structure of Core Streptavidin Determined From Multiwavelength Anomalous Diffraction of Synchrontron Radiation," Proc. Natl. Acad. Sci. USA 86:2190-2194 (1989).
Jin et al., "High Resolution Functional Analysis of Antibody-Antigen Interactions," J. Mol. Biol. 226:851-865 (1992).
Kurzban et al., "The Quaternary Structure of Streptavidin in Urea," J. Biol. Chem. 266:14470-14477 (1991).
Matthews and van Holde, Biochemistry, Chap. 5., pp. 137-141, Benjamin/Cummings Publish. Co. California (1990).
Meyer et al., "Streptavidin-Biotin Immunotoxins: A New Approach to Purging Bone Marrow," Exp. Hematol. 19:710-713 (1991).
Miyamoto et al., "Absolute and Relative Binding Free Energy Calculations of the Interaction of Biotin and Its Analogs with Streptavidin Using Molecular Dynamics/Free Energy Perturbation Approaches," Proteins 16:226-245 (1993).
Miyamoto and Kollman, "What Determines the Strength of Noncovalent Association of Ligands to Proteins in Aqueous Solution?" Proc. Natl. Acad. Sci. USA 90:8402-8406 (1993).
Sano et al., "Expression of a Cloned Streptavidin Gene in Escherichia coli," Proc. Natl. Acad. Sci. USA 87:142-146 (1990).
Sano and Cantor, "A Streptavidin-Protein A Chimera That Allows One-Step Production of a Variety of Specific Antibody Conjugates," Bio/Technology 9:1378-1381 (1991).
Sano and Cantor, "Expression Vectors for Streptavidin-Containing Chimeric Proteins," Biochem. Biophys. Res. Commun. 176:571-577 (1991).
Savage et al., Avidin-Biotin Chemistry: A Handbook, Pierce Chemical Co. (1992).
Schwartz et al., "Observation of Noncovalent Complexes to the Avidin Tetramer by Electrospray Ionization Mass Spectrometry," J. Amer. Soc. Mass Spectrom. 5:201-204 (1994).
Sligar et al., "Mutagenesis of Cytochromas P450cam and b.sub.5," Meth. Enzymol., 206:31-49 (1990).
Sowdhamini et al., "Stereochemical Modeling of Disulfide Bridges. Criteria for Introduction into Proteins by Site-directed Mutagenesis," Protein Eng. 3:95-103 (1989).
Takei et al., "Temperature-Responsive Bioconjugates. 1. Synthesis of Temperature-Responsive Oligomers with Reactive End Groups and Their Coupling to Biomolecules," Bioconjugate Chem. 4:42-46 (1993).
Weber et al., "Structural Origins of High-Affinity Biotin Binding to Streptavidin," Science 243:85-88 (1989).
Wilchek and Bayer, "Introduction to Avidin-Biotin Technology," Meths. Enzymol. 184:5-45 (1990).
Willner et al., "Photoswitchable Binding of Substrates to Proteins: Photoregulated Binding of a .alpha.-D-Mannopyranose to Concanavalin A Modified by a Thiophenefulgide Dye," J. Am. Chem. Soc. 114:3150-3151 (1992).
Zoller et al., Meth. Enzymol. 100:469-501 (1983).
Chilkoti et al. Bioconjugate J., vol. 5:504-507 (1993).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Modified-affinity streptavidin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Modified-affinity streptavidin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modified-affinity streptavidin will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-993400

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.