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Related Concept Videos

Protein Organization01:13

Protein Organization

Overview
Protein Organization01:24

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.
Protein Folding01:22

Protein Folding

Overview
Protein Folding01:22

Protein Folding

Overview
Protein Folding01:25

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 Structure02:15

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 can...

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A Protocol for Computer-Based Protein Structure and Function Prediction
16:41

A Protocol for Computer-Based Protein Structure and Function Prediction

Published on: November 3, 2011

[Protein secondary structure prediction based on maximum entropy model].

Tongliang Zhang1, Yongsheng Ding

  • 1College of Information Sciences and Technology, Donghua University, Shanghai 201620, China.

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi = Journal of Biomedical Engineering = Shengwu Yixue Gongchengxue Zazhi
|July 10, 2008
PubMed
Summary
This summary is machine-generated.

This study introduces a maximum entropy model for protein secondary structure prediction, integrating multiple influential factors. The novel approach achieves higher accuracy than existing methods, demonstrating its practical utility.

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Last Updated: Jul 3, 2026

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Area of Science:

  • Computational biology
  • Bioinformatics
  • Protein structure analysis

Context:

  • Protein secondary structure prediction is crucial for understanding protein function.
  • Accurate prediction remains a challenge due to the complexity of sequence-structure relationships.

Purpose:

  • To develop a more accurate method for protein secondary structure prediction.
  • To integrate multi-source information using a maximum entropy model.

Summary:

  • A maximum entropy model was developed incorporating factors like amino acid charge and residue interactions.
  • Feature functions were designed based on key determinants of secondary structure states.
  • The model integrates multi-source information into a single probabilistic framework.

Impact:

  • The proposed method achieves higher prediction accuracy compared to existing techniques.
  • Demonstrates the practical applicability of the maximum entropy approach for protein analysis.
  • Enhances the potential for accurate protein function prediction through improved structural insights.