RESEARCH: INFLUENZA
FOLDING PROJECT #12442 PROFILE

The project relates to miniproteins that fight flu by blocking the virus's attachment to cells. Scientists want to use computer simulations to understand how these miniproteins work and improve their design, leading to better flu treatments.

Note: This TLDR is a simplication and may not be 100% accurate.

Designed miniprotein therapeutics occupy the middle ground between small molecule drugs and monoclonal antibody treatments for infectious disease.

Hemagglutinin is a viral fusion protein that allows H1 influenza A (HA) to bind sialic acid on cell surfaces, as well as being involved in the post-endocytosis mechanism of cellular infection.; The Baker lab at University of Washington has developed de novo designed miniproteins that bind hemagglutinin, and developed ways to improve their binding through affinity maturation.

Many of the mutations seen in affinity-matured sequences are not directly in the binding interface, and it is unclear how these changes lead to higher affinity.

Understanding this mechanism may help us better computationally design better binders.

We aim to use molecular dynamics simulations to examine ab initio binding pathways for these miniprotein binders, and use enhanced sampling methods to study the unbinding reaction.

Pairing these methods together will provide a robust description of the complete binding reaction for this system.

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miniprotein

Small protein with therapeutic potential.

Miniproteins are engineered proteins designed to be smaller and more stable than traditional antibodies. They hold promise as therapeutics due to their ability to target specific biological processes with high precision.

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therapeutics

Substances used to treat or prevent disease.

Therapeutics encompass a wide range of medications and treatments aimed at diagnosing, treating, and preventing diseases. This field focuses on developing safe and effective interventions to improve human health.

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hemagglutinin

Viral protein that binds to sialic acid on host cells.

Hemagglutinin is a key viral protein found on the surface of influenza viruses. It plays a crucial role in the virus's ability to attach to and enter host cells, initiating infection.

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influenza A

A type of influenza virus that can cause serious illness in humans.

Influenza A is a highly contagious respiratory virus that can lead to seasonal outbreaks. It's characterized by symptoms such as fever, cough, muscle aches, and fatigue. Vaccines are available to protect against specific strains of influenza A.

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H1

Subtype of influenza A virus.

H1 refers to a specific subtype of the influenza A virus. Influenza viruses are classified based on two surface proteins: hemagglutinin (H) and neuraminidase (N). The H1 subtype is one of the most common influenza strains that circulate in humans.

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HA

Hemagglutinin (a viral surface protein).

HA stands for hemagglutinin, a protein found on the surface of influenza viruses. It plays a vital role in the virus's ability to attach to and enter host cells.

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sialic acid

Sugar molecule found on cell surfaces.

Sialic acid is a type of sugar molecule commonly found on the surfaces of human cells. Influenza viruses bind to sialic acid receptors on host cells as the first step in infection.

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affinity maturation

Process of increasing the binding affinity of antibodies.

Affinity maturation is a crucial process in antibody development. It involves introducing mutations into the antibody genes to enhance their ability to bind to specific target molecules with higher precision.

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molecular dynamics

Computer simulations of molecular motion.

Molecular dynamics simulations are powerful computational tools used to study the movement and interactions of atoms and molecules over time. They provide insights into various biological processes at the atomic level.

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enhanced sampling

Techniques to accelerate simulations.

Enhanced sampling methods are employed in molecular dynamics simulations to overcome the limitations of traditional simulations. They help explore a wider range of conformations and accelerate the process of studying rare events.