Nanobodies to study protein conformational states

Area of Science:

• Biochemistry
• Structural Biology
• Biotechnology

Background:

• Nanobodies possess advantageous biochemical and economic properties, including small size, high affinity, specificity, and stability.
• These properties facilitate their increasing use in routine and innovative applications across research, biotechnology, and medicine.

Purpose of the Study:

• To highlight the expanding applications of nanobodies in structural biology and medicine.
• To showcase nanobodies' utility in stabilizing protein conformations for structural analysis and drug discovery.

Main Methods:

• Utilizing nanobodies to access conformational epitopes in concave and hinge regions of proteins.
• Employing X-ray crystallography to determine structures of biomolecules stabilized by nanobodies.
• Engineering nanobodies for use as intrabodies and in single particle cryo-electron microscopy (cryo-EM).

Main Results:

• Nanobodies enable the stabilization of dynamic proteins into single functional conformations.
• This stabilization facilitates structural determination of biomolecules using techniques like X-ray crystallography.
• Engineered nanobodies serve as conformational biosensors and are applicable to single particle cryo-EM and drug discovery.

Conclusions:

• Nanobodies are versatile tools with broad applications in structural biology, medicine, and drug discovery.
• Their ability to stabilize protein conformations is key to advancing molecular research and therapeutic development.