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Investigating Protein Sequence-structure-dynamics Relationships with Bio3D-web
Published on: July 16, 2017
Protein structure databases with new web services for structural biology and biomedical research
Daron M Standley1, Akira R Kinjo, Kengo Kinoshita
1Institute for Protein Research, Osaka University, Suita, Osaka 565-0871, Japan.
Briefings in Bioinformatics
|April 24, 2008
Summary
Protein Data Bank Japan (PDBj) enhances protein structural data with functional and experimental details. Developed tools aid in recognizing protein homologies and assigning functions for structural genomics.
Area of Science:
- Structural biology
- Biochemistry
- Bioinformatics
Background:
- Protein Data Bank Japan (PDBj) is a key member of the worldwide Protein Data Bank (wwPDB).
- PDBj processes a significant portion (25-30%) of global protein structural data.
- Structural data is enriched with biological, biochemical, and experimental information.
Purpose of the Study:
- To present the applications developed at PDBj for structural biology and biomedical research.
- To showcase the utility of these tools in analyzing protein structures and functions.
Main Methods:
- Development of a Java-based molecular graphics viewer (jV).
- Implementation of electron density map visualization for quality assessment.
- Creation of eF-site (database of molecular surfaces) and eF-seek (similarity search service).
- Development of Protein Globe for accessing protein folds and linked applications.
- Identification of sequence and structural neighbors.
Main Results:
- Demonstration of tools for recognizing remote homologies between protein structures.
- Application of tools for assigning putative biochemical functions to new protein targets from structural genomics.
- Enhanced data curation and distribution by PDBj.
Conclusions:
- PDBj's developed applications are valuable resources for structural biology and biomedical studies.
- These tools facilitate the understanding of protein structure-function relationships.
- PDBj significantly contributes to the advancement of structural genomics research.
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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.
The primary structure of a protein is its amino acid sequence.
Protein Organization
Overview
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.
The primary structure of a protein is its amino acid sequence.
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...
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...
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Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein families usually occur because of gene duplication, where an additional copy of a gene is inserted into the genome of an organism. Mutations that change the amino acids but still allow the protein to be properly synthesized, will lead to new protein family members. If these new proteins contain similar amino acids in key locations, protein...
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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.
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