The abstract is read at the publisher; the summary is JClub's.
Maize NOB1 paralogs ZmNOB1a and ZmNOB1b are required for proper pre-40S cytoplasmic maturation, with their combined disruption severely reducing kernel development and translational capacity.
- Why it matters: NOB1-mediated 20S pre-rRNA cleavage is a key quality-control step, but its developmental role in crop seed formation and translation during kernel development is unclear.
- What they did: The study identified ZmNOB1a and ZmNOB1b, tested redundancy via genetic disruption, and used molecular assays to assess pre-rRNA maturation, ribosome assembly, and translation output, including co-sedimentation with eIF4A.
- The result: Simultaneous loss of ZmNOB1 activity caused defective D-site cleavage, fewer 80S monosomes and polysomes, elevated free ribosomal subunits, and reduced starch and storage protein accumulation, linking ZmNOB1 processing to translational competence and seed filling.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.