Inclusion Body
Inclusion Body — Dense aggregates of misfolded recombinant protein that form in bacterial expression systems, requiring solubilization and refolding to recover active peptide.
What Is an Inclusion Body?
Inclusion bodies are dense, insoluble aggregates of misfolded recombinant protein/peptide that accumulate in E. coli cytoplasm during overexpression. While inclusion bodies simplify initial recovery (pellet by centrifugation), the peptide must be solubilized in chaotropes and refolded to recover biological activity.
Workflow
- Isolation: Cell lysis, centrifugation, wash inclusion body pellet with detergent
- Solubilization: 6-8 M urea or 6 M guanidinium chloride + reducing agent
- Refolding: Gradual chaotrope removal by dialysis or dilution with redox buffer
- Purification: Chromatographic purification of correctly folded species
Frequently Asked Questions
What is Inclusion Body?
Dense aggregates of misfolded recombinant protein that form in bacterial expression systems, requiring solubilization and refolding to recover active peptide.
Why is Inclusion Body important in peptide research?
Inclusion Body is a fundamental concept in manufacturing as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.
Authority Sources
- Inclusion Body on Wikipedia
- Search Inclusion Body on PubChem (NIH)
- Research articles on ScienceDirect