Related Experiment Video
Updated: Sep 8, 2025

16:41
A Protocol for Computer-Based Protein Structure and Function Prediction
Published on: November 3, 2011
68.8K
iProtGly-SS: A Tool to Accurately Predict Protein Glycation Site Using Structural-Based Features
Iman Dehzangi1,2, Alok Sharma3,4,5, Swakkhar Shatabda6
1Department of Computer Science, Rutgers University, Camden, NJ, USA. i.dehzangi@rutgers.edu.
Methods in Molecular Biology (Clifton, N.J.)
|June 13, 2022
Summary
A new machine learning tool, iProtGly-SS, improves the prediction of protein glycation sites. This computational method enhances accuracy for identifying glycation in proteins, aiding research into diseases like Alzheimer's and diabetes.
Area of Science:
- Biochemistry and Molecular Biology
- Computational Biology
- Bioinformatics
Background:
- Posttranslational modifications (PTMs) diversify protein function.
- Glycation is a significant PTM linked to neurological disorders (e.g., Alzheimer's, Parkinson's) and diabetes complications.
- Current computational methods for predicting glycation sites have limited accuracy.
Purpose of the Study:
- To develop an advanced machine learning tool, iProtGly-SS, for accurate prediction of lysine glycation sites.
- To improve upon existing computational approaches for glycation site identification.
Main Methods:
- Developed iProtGly-SS using sequential and structural protein information.
- Employed a Support Vector Machine (SVM) classifier within the iProtGly-SS tool.
- Validated performance on three established benchmark datasets.
Main Results:
- iProtGly-SS achieved high prediction accuracies: 81.61%, 93.62%, and 92.95% on benchmark datasets.
- The tool significantly outperformed previous computational methods for glycation site prediction.
- Demonstrated the effectiveness of integrating sequential and structural data with SVM.
Conclusions:
- iProtGly-SS offers a substantial improvement in predicting protein glycation sites.
- The tool provides a valuable resource for glycation-related disease research.
- iProtGly-SS is available as a publicly accessible web server.
Related Concept Videos
Protein Glycosylation
7.2K
Glycosylation, the most common post-translational modification for proteins, serves diverse functions. Adding sugars to proteins makes the proteins more resistant to proteolytic digestion. Glycosylated proteins can act as markers and receptors to promote cell-cell adhesion. Additionally, they have many essential quality control functions in the cell, such as correct protein folding and facilitating transport of misfolded proteins to the cytosol, which can be degraded.
Glycosylation occurs in...
Glycosylation occurs in...
7.2K
Protein-protein Interfaces
13.2K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
13.2K
Protein Folding Quality Check in the RER
3.8K
ER is the primary site for the maturation and folding of soluble and transmembrane secretory proteins. The calnexin cycle is a specific chaperone system that folds and assesses the confirmation of N-glycosylated proteins before they can exit the ER lumen. The primary players of this quality check pipeline are the lectins, ER-resident chaperones, and a glucosyl transferase enzyme. In case the calnexin system in the lumen fails to salvage a misfolded protein, it is transported to the cytoplasm...
3.8K
Conserved Binding Sites
4.3K
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
4.3K
Oligosaccharide Assembly
3.0K
Protein glycosylation starts in the ER lumen and continues in the Golgi apparatus. Glycosyltransferases catalyze the addition of sugar molecules or glycosylation of proteins. Usually, these enzymes add sugars to the hydroxyl groups of selected serine or threonine residues to form O-linked glycans or the amino groups of asparagine residues to form N-linked glycans. Different positions on the same polypeptide chain can contain differently linked glycans.
Multiple sugar molecules that may or may...
Multiple sugar molecules that may or may...
3.0K
Proteoglycans
4.0K
Glycans, a class of complex heterogeneous molecules, can be covalently attached to proteins to form glycosylated proteins that regulate various physiological and pathological processes. Glycosylated proteins or glycoproteins comprise N-linked and O-linked oligosaccharides. O-glycosylation is the most common type of protein glycosylation. Here, glycans attach to the oxygen atom of the hydroxyl groups of Serine or Threonine residues. O-linked glycosylation occurs later in protein processing,...
4.0K

