2 public questions tagged with this topic.
Inclusion bodies store reserve materials in prokaryotic cells. They are not surrounded by a membrane and lie freely in the cytoplasm; examples include phosphate, cyanophycean and glycogen granules.
Ref: NCERT Class 11 Biology Chapter 8: Cell: The Unit of Life Prokaryotic Cell - Structure and Components
Inclusion bodies represent dense, insoluble cytoplasmic aggregates of misfolded recombinant protein accumulating in Escherichia coli during overexpression. High synthesis rates under strong promoters saturate GroEL, DnaK chaperone pathways, exposing hydrophobic patches that promote intermolecular association. Insufficient time for proper folding, absence of eukaryotic folding catalysts, and reducing environment preventing disulfide formation further exacerbate aggregation. Aggregates are refractile, biologically inactive, and require chaotropic agents for solubilization. Their formation reflects protein quality control failure rather than growth rate, protease action, or DNA recombination deficiency alone.
Ref: NCERT Biology Class XII Principles on Klenow fill-in labeling, Lehninger Chapter 9 DNA cloning techniques, and Molecular Cloning by Sambrook Chapter 10 documenting end-labeling of cohesive termini.
