Large ribosomal subunit protein uL3

Large ribosomal subunit protein uL3 (RPL3) is a structural and functional component of the large ribosomal subunit, which catalyzes protein synthesis in cells (UniProt: P39023). It is a 46 kDa protein conserved across eukaryotes and functions as part of the larger ribonucleoprotein machinery essential for cellular translation.

RPL3 is ubiquitously expressed across tissues as a core ribosomal constituent. UniProt records no specific disease associations for this protein, and it is not identified in the present dataset as harboring known genetic variants linked to inherited conditions.

In Alzheimer's Disease, RPL3 shows consistent downregulation in post-mortem AD brain tissue compared to age-matched controls (Chaparral AD proteomics), with a mean log2 fold-change of −0.34 across one subcellular fraction. This reduction may reflect compromised translational capacity or ribosomal dysfunction in AD pathology, though the modest magnitude suggests context-dependent effects across cellular compartments. The functional significance of reduced ribosomal protein levels in AD neurodegeneration warrants further investigation.