Homology modeling predicts the three-dimensional structure of a protein using the experimentally determined structure of a related protein. Learn about template selection, sequence alignment, model building, refinement, validation and applications.
Protein structure prediction uses amino acid sequences and evolutionary information to estimate three-dimensional protein structures. Learn about homology modeling, threading, AlphaFold, structural confidence and applications in biology and genetics.
Protein structure connects amino acid sequence with biological function. Learn how primary, secondary, tertiary and quaternary structures, domains, motifs and 3D functional sites determine how proteins work.
Protein signatures and conserved motifs are short sequence patterns that provide important clues about protein function, evolution, catalytic activity, binding sites, and regulation. Learn how motif and signature analysis complements protein domains, families, and Profile HMMs.
Protein sequence alignment is a fundamental bioinformatics method for comparing proteins, identifying conserved regions, detecting homologues, studying protein families and investigating evolutionary relationships.
Protein families are groups of evolutionarily related proteins that share conserved sequence, structural, and functional characteristics. Learn how bioinformatics tools identify and classify protein families.
Protein motifs and protein domains are related but distinct features of proteins. Learn how they differ in size, structure, function, evolutionary conservation, and bioinformatics identification.
Hsp70 co-chaperones regulate the activity and specificity of Hsp70 molecular chaperones. Discover how Hsp40/J-domain proteins, nucleotide exchange factors, BAG proteins, Hsp110, and other co-chaperones control protein folding, substrate binding, quality control, and degradation.
Dietary protein is an essential macronutrient involved in muscle maintenance, tissue repair, immune function, enzymes, hormones, and many other processes. Explore the basics of protein sources, amino acids, protein quality, requirements, supplements, and its role in health and nutrition.
Protein is an essential macronutrient that supports muscle growth, tissue repair, immunity, enzymes, hormones, and overall health. Discover protein sources, amino acids, daily requirements, supplements, and its role in a balanced diet.
Hsp70 nucleotide exchange factors regulate the transition from ADP-bound to ATP-bound Hsp70, resetting the chaperone cycle and controlling substrate release. Learn how NEFs such as BAG proteins, Hsp110, HspBP1, and GrpE regulate Hsp70 activity and protein quality control.
Hsp70 (heat shock protein 70) is a major molecular chaperone that helps maintain cellular protein homeostasis. Discover its structure, ATPase cycle, protein-folding functions, co-chaperones, stress response, disease associations, and therapeutic potential.
GroEL is a bacterial Hsp60 chaperonin that assists protein folding through ATP-dependent structural changes. Learn how its equatorial, intermediate, and apical domains, double-ring architecture, oligomerization, and interaction with GroES create a dynamic protein-folding machine.
GroEL-GroES binding is a central step in the bacterial chaperonin protein-folding cycle. Learn how ATP-dependent conformational changes, GroES mobile loops, apical-domain interactions, allostery, and chamber closure work together to support protein folding.
The GroES mobile loop is a flexible structural element that interacts with GroEL apical domains during ATP-dependent chaperonin assembly. Learn how this interaction stabilizes chamber closure, supports substrate encapsulation, and enables protein folding inside the GroEL-GroES complex.
