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Related Experiment Video

Updated: May 26, 2026

Kinetic Screening of Nuclease Activity using Nucleic Acid Probes

Kinetic Screening of Nuclease Activity using Nucleic Acid Probes

Published on: November 1, 2019

Engineering knottins as novel binding agents.

Sarah J Moore¹, Jennifer R Cochran

¹Department of Bioengineering, Cancer Institute, and Bio-X Program, Stanford University, Stanford, California, USA.

Methods in Enzymology

|January 11, 2012

Summary

This summary is machine-generated.

Knottins are stable protein scaffolds engineered for new molecular recognition properties. This study details methods for creating, screening, and producing these designer knottins for biomedical applications.

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Last Updated: May 26, 2026

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Area of Science:

Biochemistry
Protein Engineering
Molecular Biology

Background:

Knottins are miniproteins characterized by a stable cystine-knot structure.
Their inherent stability and sequence diversity make them ideal scaffolds for protein engineering.
Naturally occurring knottins show therapeutic and diagnostic potential.

Purpose of the Study:

To describe methods for engineering knottins with novel molecular recognition properties.
To enable the development of designer knottins for specific biomedical targets.
To provide protocols for knottin library creation, screening, and production.

Main Methods:

Yeast surface display for creating and screening knottin libraries.
Fluorescence-activated cell sorting (FACS) for efficient library screening.
Synthetic and recombinant methods for knottin production.
Binding affinity assays for cell surface target proteins.

Main Results:

Demonstration of methods for generating and selecting engineered knottins.
Establishment of protocols for producing knottins.
Validation of techniques for measuring knottin binding affinity.
Successful engineering of knottins for novel molecular recognition.

Conclusions:

Knottin engineering offers a powerful approach to create targeted molecular binders.
The described methods facilitate the development of knottin-based diagnostics and therapeutics.
This work provides a framework for advancing knottin applications in medicine.