HSPA8/HSC70 chaperone protein: structure, function, and chemical targeting.
François Stricher1, Christophe Macri, Marc Ruff
1CNRS; Institut de Biologie Moléculaire et Cellulaire; Immunopathologie et Chimie Thérapeutique/Laboratory of Excellence Medalis; Strasbourg, France.
Autophagy
|October 15, 2013
Summary
Heat shock protein HSPA8 (HSC70) is a key regulator of autophagy. Understanding HSC70’s structure-function relationship is crucial for developing targeted therapies that modulate autophagy for therapeutic benefit.
Area of Science:
- Molecular Biology
- Cellular Biology
- Biochemistry
Background:
- HSPA8, also known as HSC70, is a constitutively expressed chaperone protein.
- HSC70 belongs to the HSP70 family and plays a central role in various cellular processes.
- HSC70 has a decisive regulatory role in the cellular process of autophagy.
Purpose of the Study:
- To review HSC70 structure-function relationships.
- To emphasize the targeting of HSC70 by small molecules and peptides.
- To explore therapeutic intervention strategies by modulating HSC70 properties.
Main Methods:
- Literature review focusing on HSC70 structure and function.
- Analysis of small molecule and peptide interactions with HSC70.
- Consideration of structure-based drug design principles.
Main Results:
- Detailed examination of HSC70 structure-function dynamics.
- Identification of potential strategies for targeting HSC70.
- Exploration of therapeutic applications for modulating autophagy via HSC70.
Conclusions:
- A comprehensive understanding of HSC70 structure-function is essential for designing effective autophagy-regulating biomolecules.
- Targeting HSC70 offers a promising avenue for developing novel therapeutic interventions.
- Further research into HSC70 modulation can lead to advancements in treating diseases associated with autophagy dysfunction.
Related Concept Videos
Molecular Chaperones and Protein Folding
14.7K
The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
The...
14.7K
Molecular Chaperones and Protein Folding
14.2K
14.2K
Bacterial Protein Maturation
748
Bacterial protein maturation is a tightly regulated process that ensures newly synthesized polypeptides achieve correct functional conformations. This maturation involves a series of modifications, folding events, and quality control steps, often assisted by specialized chaperone proteins.N-Terminal ModificationsThe maturation of bacterial polypeptides begins cotranslationally as the polypeptide exits the ribosome. The first amino acid, N-formylmethionine (fMet), is typically modified at the...
748
Protein Complex Assembly
12.6K
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
12.6K
Directing Proteins to the Rough Endoplasmic Reticulum
12.1K
The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...
12.1K
Energy to Drive Translocation
2.0K
Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
Generally, polypeptides are unfolded by two distinct...
Generally, polypeptides are unfolded by two distinct...
2.0K


