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Mechanical Protein Functions

Mechanical Protein Functions

Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force.

Structural Protein Function

Structural Protein Function

Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to...

Structural Protein Function

Structural Protein Function

Fruit Development, Structure, and Function

Fruit Development, Structure, and Function

Fruits form from a mature flower ovary. As seeds develop from the ovules contained within, the ovary wall undergoes a series of complex changes to form fruit. In some fruits, such as soybeans, the ovary wall dries; in other fruits, such as grapes, it remains fleshy. In some cases, organs other than the ovary contribute to fruit formation; such fruits are called accessory fruits.

Mechanical Protein Function

Mechanical Protein Function

Structure and Function of Erythrocytes

Structure and Function of Erythrocytes

There are between 4.2 and 6 million erythrocytes, also known as red blood cells, in every microliter of blood. These cells are small, flattened biconcave discs with centers that are depressed.
The erythrocyte plasma membrane is associated with proteins such as spectrin, which forms a flexible cytoplasmic meshwork. This meshwork allows erythrocytes to twist, turn, become cup-shaped, and regain their biconcave shape as they pass through narrow capillaries. Additionally, erythrocytes can form...

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Related Experiment Video

Updated: Feb 12, 2026

Functional Reconstitution and Channel Activity Measurements of Purified Wildtype and Mutant CFTR Protein

Functional Reconstitution and Channel Activity Measurements of Purified Wildtype and Mutant CFTR Protein

Published on: March 9, 2015

Structural mechanisms of CFTR function and dysfunction.

Tzyh-Chang Hwang^1,2,3, Jiunn-Tyng Yeh⁴, Jingyao Zhang^4,3

¹Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO hwangt@health.missouri.edu.

The Journal of General Physiology

|March 28, 2018

Summary

This summary is machine-generated.

Cystic fibrosis transmembrane conductance regulator (CFTR) protein structure is now clearer, aiding understanding of this vital chloride channel. Integrating structural data with biochemical studies is key to understanding CFTR

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Last Updated: Feb 12, 2026

Functional Reconstitution and Channel Activity Measurements of Purified Wildtype and Mutant CFTR Protein

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Published on: March 9, 2015

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In Vitro Analysis of PDZ-dependent CFTR Macromolecular Signaling Complexes

In Vitro Analysis of PDZ-dependent CFTR Macromolecular Signaling Complexes

Published on: August 13, 2012

Area of Science:

Biochemistry
Molecular Biology
Genetics

Background:

The Cystic Fibrosis (CF) transmembrane conductance regulator (CFTR) chloride channel is crucial for water and electrolyte balance in exocrine tissues.
Mutations in the CFTR gene cause Cystic Fibrosis (CF), a prevalent lethal genetic disease in Caucasians.

Purpose of the Study:

To integrate recent atomic structural insights of CFTR with existing biochemical and biophysical data.
To enhance the understanding of the functional significance of CFTR's dynamic domain interactions.

Main Methods:

Review of recently published atomic structures of CFTR in two distinct conformations.
Integration of structural data with established biochemical and biophysical studies.

Main Results:

Recent publications provide the first clear atomic overview of the CFTR protein in two different functional states.
The highly dynamic nature of CFTR domain interactions is highlighted.

Conclusions:

A comprehensive understanding of CFTR function requires combining new structural information with prior biochemical and biophysical research.
This integrated approach is essential for elucidating the functional significance of CFTR structures.