RPF1 (ribosome production factor 1 homolog) is a nucleolar protein essential for early-stage ribosome biogenesis, particularly 60S ribosomal subunit maturation. RPF1 functions in pre-rRNA processing by facilitating the conformational changes of precursor rRNA that promote cleavage, rather than performing direct catalytic cleavage itself 1. The protein operates as part of the WDR74 module, a pre-ribosomal subcomplex that coordinates early pre-rRNA cleavage within internal transcribed spacer sequences and late processing of 5.8S rRNA maturation 2. RPF1 physically interacts with binding partners including MAK16, a protein containing a redox-sensitive [4Fe-4S] iron-sulfur cluster whose stability is critical for maintaining the RPF1-MAK16 complex and 25S rRNA production 3. Beyond its canonical ribosomal function, RPF1 has been identified as a hub gene involved in ribosome biogenesis pathways relevant to type 2 diabetes pathogenesis 4 and emerges as a prognostic biomarker in ischemic stroke where ribosomal biogenesis genes correlate with disease severity and immune responses 5. While RPF1's housekeeping role in ribosome assembly is well-established, its potential involvement in disease states suggests broader cellular significance beyond protein synthesis.