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Related Concept Videos

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 Organization01:13

Protein Organization

Overview
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 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...
Protein and Protein Structures02:15

Protein and Protein Structures

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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Related Experiment Video

Updated: Jun 6, 2026

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

PSS-SQL: protein secondary structure - structured query language.

Dariusz Mrozek1, Dominika Wieczorek, Bozena Malysiak-Mrozek

  • 1Institute of Informatics, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland. Dariusz.Mrozek@polsl.pl

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|November 25, 2010
PubMed
Summary
This summary is machine-generated.

We developed PSS-SQL, a new language for searching protein databases based on secondary structure similarity. This allows direct querying of protein shape and construction within the database.

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Area of Science:

  • Bioinformatics
  • Structural Biology
  • Database Management

Background:

  • Protein secondary structure is crucial for understanding protein construction and shape.
  • Current database systems lack integrated methods for biological data exploration, especially at the SQL level.
  • Protein structural similarity searching typically relies on external, non-integrated tools.

Purpose of the Study:

  • To introduce PSS-SQL, a novel declarative language for protein structure similarity searching.
  • To enable direct database querying for proteins with user-specified secondary structures.
  • To simplify and integrate protein structure similarity analysis.

Main Methods:

  • Development of the PSS-SQL language.
  • Integration of secondary structure querying capabilities into a database management context.
  • Utilizing SQL-level querying for structural similarity.

Main Results:

  • PSS-SQL allows users to search databases for proteins based on secondary structure similarity.
  • The language provides a simple and declarative approach to this type of search.
  • Eliminates the need for external tools for basic secondary structure similarity searches.

Conclusions:

  • PSS-SQL offers an integrated solution for protein secondary structure similarity searching.
  • The developed language simplifies complex structural queries.
  • This approach enhances the exploration of biological data within database systems.