Globular Filamentous Proteins

Globular and filamentous proteins are two major structural classes of proteins, distinguished by their three-dimensional shapes and the biological roles those shapes support. Globular proteins fold into compact structures through hydrophobic interactions, hydrogen bonds, ionic interactions, and disulfide bonds, whereas filamentous proteins form elongated, repetitive assemblies that provide strength, flexibility, or structural support. Their contrasting architectures influence solubility, stability, molecular recognition, and mechanical behavior. In biochemistry, comparing these classes helps explain enzyme catalysis, transport, signaling, and cellular architecture, while also supporting research on protein folding, biomaterials, disease mechanisms, and the design of engineered proteins with tailored properties.

Globular Filamentous Proteins - Related Videos

Education

JoVE Core - Molecular Biology

Globular and Fibrous Proteins

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2020

Many proteins can be classified into two distinct subtypes - globular or fibrous. These two types differ in their shapes and solubilities. Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...

Globular and Fibrous Proteins

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2023

Many proteins can be classified into two distinct subtypes - globular or fibrous. These two types differ in their shapes and solubilities. Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...

Globular Proteins

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2023

In organisms, proteins are the most abundant macromolecules. They act as the building blocks of life and play various crucial roles in the body. Proteins can be broadly classified into two distinct subtypes based on their shape and solubilities: globular proteins and fibrous proteins. Globular proteins serve many important physiological functions, such as acting as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be soluble in the aqueous...

Research

JoVE Journal - Biochemistry
Free Sample

Measuring Interactions of Globular and Filamentous Proteins by Nuclear Magnetic Resonance Spectroscopy (NMR) and Microscale Thermophoresis (MST)

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Cited by 1 •

2018

Here, we present a protocol for the production and purification of proteins that are labeled with stable isotopes, and subsequent characterization of protein-protein interactions using Nuclear Magnetic Resonance (NMR) spectroscopy and MicroScale Thermophoresis (MST) experiments.

Preparation and Characterization of Nanoliposomes for the Entrapment of Bioactive Hydrophilic Globular Proteins

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Cited by 15 •

2019

This study describes classical hydration using the thin lipid film method for nanoliposome preparation followed by nanoparticle characterization. A 47 kDa-hydrophilic and globular protein, tarin, is successfully encapsulated as a strategy to improve stability, avoid fast clearance, and promote controlled release. The method can be adapted to hydrophobic molecules encapsulation.

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