research
The Cell's Ribosome Factory Has Rooms Within Rooms
St. Jude researchers found spontaneous sub-compartments that hold late-stage building blocks together inside the nucleolus.
Summary
St. Jude researchers found spontaneous sub-compartments that hold late-stage building blocks together inside the nucleolus.
The nucleolus is a liquid-like organelle where cells assemble ribosomes, but its internal organization is more layered than the familiar three-compartment model. St. Jude researchers found smaller sub-compartments inside the granular component, where RNA and assembly proteins concentrate with SURF6 and NPM1 to keep late-stage ribosome parts in place. The structures form spontaneously through molecular interactions rather than membranes. Mapping that organization may help explain diseases marked by excessive ribosome production, including some cancers, though the study itself identifies cell biology rather than a therapeutic target ready for use.
Why it matters
St. Jude researchers found spontaneous sub-compartments that hold late-stage building blocks together inside the nucleolus.
Limits and context
No additional limitation was separately recorded.
Key claims
St. Jude researchers found spontaneous sub-compartments that hold late-stage building blocks together inside the nucleolus.
Evidence: source-2026-07-16-012
Sources
- St. Jude via Newswise: Nucleolus sub-compartments drive ribosome assemblySt. Jude via Newswise · secondary reporting
Corrections
No corrections have been recorded for this story.