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Protein Folding

Protein Folding

Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...

Protein and Protein Structure

Protein and Protein Structure

Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...

Structural Protein Function

Structural Protein Function

Protein Organization

Protein Organization

Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence....

Globular and Fibrous Proteins

Globular and Fibrous Proteins

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...

Cytoplasm

Cytoplasm

The cytoplasm consists of organelles and a framework of protein scaffolds called the cytoskeleton suspended in an aqueous solution, the cytosol. The cytosol is a rich broth of water, ions, salts, and various organic molecules.
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The cytoplasm is the location for several cellular processes, including protein synthesis and folding. The aqueous nature of the cytosol promotes protein folding such that the hydrophobic amino acid side chains are buried in the protein...

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Related Experiment Video

Updated: May 20, 2025

Identification of Post-translational Modifications of Plant Protein Complexes

Identification of Post-translational Modifications of Plant Protein Complexes

Published on: February 22, 2014

Unlocking the secrets: Structure-function dynamics of plant proteins.

Tanweer Haider¹, Wasim Akram², Ramakant Joshi²

¹Gyan Vihar School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Jaipur, Rajasthan 302017, India.

Colloids and Surfaces. B, Biointerfaces

|May 18, 2025

Summary

Plant proteins are vital for sustainable food and medicine. Understanding their structure-function links, influenced by processing and computational modeling, unlocks new applications in drug delivery and materials science.

Keywords:

Drug encapsulation Plant proteins Protein modification Structure-function relationship Targeted drug delivery

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Last Updated: May 20, 2025

Identification of Post-translational Modifications of Plant Protein Complexes

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Published on: February 22, 2014

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Published on: December 12, 2015

Area of Science:

Biotechnology and Materials Science
Food Science and Nutrition
Pharmaceutical Sciences

Background:

Plant-based proteins are increasingly important for sustainable food systems, pharmaceuticals, and functional materials.
Their complex structure-function relationships dictate their behavior and applications.
Understanding these relationships is key to optimizing their use.

Purpose of the Study:

To review the structure-function relationships of plant proteins.
To explore how external factors and processing techniques influence protein structure and functionality.
To highlight emerging applications, particularly in targeted drug delivery.

Main Methods:

Analysis of primary, secondary, tertiary, and quaternary protein structures.
Examination of the impact of environmental factors (pH, ionic strength, temperature).
Review of advanced processing techniques (extrusion, enzymatic, high-pressure, non-thermal) and computational modeling (molecular dynamics, AI).

Main Results:

Protein structure is profoundly affected by amino acid sequence and external factors.
Processing techniques can modify protein structure and function.
Computational modeling offers a powerful tool for predicting and enhancing structure-function relationships.
Plant proteins show promise for targeted drug delivery due to their structural characteristics.

Conclusions:

Harnessing plant protein potential requires strategic approaches to structure-function manipulation.
Advanced processing and computational tools are crucial for innovation.
Plant proteins are poised to be at the forefront of advancements in food science, biotechnology, and drug delivery.