Ribosomal RNA-processing protein 12 (RRP12) is a member of pre-ribosome-associated HEAT repeats-containing proteins [1-3]. RRP12 is required for nuclear export of both pre-40S and pre-60S ribosomal subunits, and it is also required for the late maturation of the 18S and 5.8S rRNA of the pre-40S ribosomes and for maturation of the 25S and 5.8S rRNA of the pre-60S ribosomes [2,3]. This entry represents a conserved domain of RRP12, which consists of HEAT repeats.

1: Insights into the evolution of the nucleolus by an analysis of its protein domain repertoire. Staub E, Fiziev P, Rosenthal A, Hinzmann B; Bioessays 2004;26:567-581. PMID:15112237

2: A pre-ribosome-associated HEAT-repeat protein is required for export of both ribosomal subunits. Oeffinger M, Dlakic M, Tollervey D; Genes Dev. 2004;18:196-209. PMID:14729571

3: Visualizing late states of human 40S ribosomal subunit maturation. Ameismeier M, Cheng J, Berninghausen O, Beckmann R; Nature. 2018;558:249-253. PMID:29875412