Category: Lab Notes: Protein Science

RING E3 Ligase Complexes & Adaptor Proteins

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RING E3 ligase complexes use adaptor proteins and substrate receptors to coordinate E2 recruitment, substrate recognition, ubiquitin transfer, cellular localization, and pathway-specific regulation.

RING E3 Ligase Oligomerization

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RING E3 ligase oligomerization enables the formation of dimers, multimers, and higher-order complexes that regulate E2 recruitment, substrate recognition, ubiquitin transfer, autoubiquitination, and cellular signaling.

RING E3 Ligase Autoubiquitination

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RING E3 ligase autoubiquitination provides an important mechanism for regulating E3 stability, activity, localization, and protein turnover through dynamic ubiquitin signaling.

RING E3 Ligase Substrate Recognition

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RING E3 ligases selectively recognize protein substrates through degrons, adaptor proteins, post-translational modifications, localization, and structural interactions that control ubiquitination.

Spatial Omics and Spatial Biology

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Spatial omics and spatial biology preserve the location of molecular information within tissues, connecting genomics, transcriptomics, proteomics and metabolomics with cellular organization, tissue architecture and biological function.

Systems Biology and Pathway Analysis

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Systems biology integrates genes, proteins, metabolites, pathways and molecular networks to understand how biological systems function and respond to perturbations. Learn how pathway analysis and multi-omics reveal complex biological mechanisms.

Drug-Target Interactions and Polypharmacology

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Drug-target interactions describe how drugs bind and modulate biological targets, while polypharmacology examines how a single drug can affect multiple proteins and pathways. Explore molecular binding, target selectivity, off-target effects and computational approaches to drug discovery.

Binding Free-Energy Calculations: Quantifying Protein-Ligand Binding Affinity

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Binding free-energy calculations use thermodynamic and molecular simulation methods to estimate how strongly ligands bind proteins. Learn about MM-GBSA, MM-PBSA, FEP, thermodynamic integration, sampling, validation and applications in drug discovery.

Molecular Dynamics Simulation

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Molecular dynamics simulations use computational models to study how proteins, ligands, water and other molecules move over time. Learn how molecular dynamics reveals protein flexibility, binding-site dynamics, molecular interactions, allostery and drug-binding behavior.

Molecular Docking

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Molecular docking uses computational methods to predict how ligands bind to protein binding sites. Learn about docking poses, scoring functions, protein flexibility, virtual screening, validation, and drug discovery.

Protein-Ligand Interaction

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Protein-ligand interactions are fundamental to enzyme activity, signaling, transport, and drug action. Explore binding pockets, active sites, molecular recognition, allosteric regulation, docking, and structure-based drug discovery.

Structure-Based Functional Annotation Protein

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Structure-based functional annotation uses three-dimensional protein structures to infer molecular function, identify conserved domains, active sites, binding pockets and interaction surfaces, and characterize unannotated proteins.

Protein Structure Visualization

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Protein structure visualization converts three-dimensional structural data into interactive molecular models that reveal protein domains, motifs, active sites, binding pockets, molecular interactions, mutations and conformational changes.

Structural Alignment: Comparing Protein Structures

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Structural alignment compares protein structures in three dimensions to identify conserved folds, domains, functional sites and evolutionary relationships. Learn how RMSD, TM-score and structural comparison tools reveal similarities and differences between proteins.

Protein Structure Database

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Protein structure databases organize experimental and predicted protein structures and provide resources for structural comparison, visualization, functional analysis, and structural bioinformatics.