NOP53 Nop53p [Saccharomyces cerevisiae S288C] - Gene

Summary

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Official Symbol: NOP53
Official Full Name: Nop53p
Primary source: SGD:S000006067
Locus tag: YPL146C
See related: AllianceGenome:SGD:S000006067; FungiDB:YPL146C; VEuPathDB:YPL146C
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Saccharomyces cerevisiae S288C (strain: S288C)
Lineage: Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; Saccharomycetales; Saccharomycetaceae; Saccharomyces
Summary: Enables rRNA binding activity. Involved in maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) and ribosomal large subunit export from nucleus. Located in nucleolus. Part of nuclear exosome (RNase complex). Orthologous to human NOP53 (NOP53 ribosome biogenesis factor). [provided by Alliance of Genome Resources, Dec 2024]
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Genomic context

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See NOP53 in Genome Data Viewer

Location:: chromosome: XVI

Exon count:: 1

Sequence:: Chromosome: XVI; NC_001148.4 (276162..277529, complement)

Chromosome XVI - NC_001148.4 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:: NC_001148.4

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

The ribosome assembly factor Nop53 has a structural role in the formation of nuclear pre-60S intermediates, affecting late maturation events.
Title: The ribosome assembly factor Nop53 has a structural role in the formation of nuclear pre-60S intermediates, affecting late maturation events.
the Nop53 is considered the adaptor responsible for recruiting the exosome complex for 7S processing.
Title: The ribosome assembly factor Nop53 controls association of the RNA exosome with pre-60S particles in yeast.
report the 3.2 A resolution crystal structure of S. cerevisiae Mtr4 bound to the interacting region of Nop53, revealing how the KOW domain of the helicase recognizes the AIM sequence of Nop53 with a network of hydrophobic and electrostatic interactions
Title: Structural insights into the interaction of the nuclear exosome helicase Mtr4 with the preribosomal protein Nop53.
Study reports the identification of adaptor proteins that recruit the exosome-associated helicase, Mtr4, to unique RNA substrates. Nop53, the yeast homolog of the tumor suppressor PICT1, targets Mtr4 to pre-ribosomal particles for exosome-mediated processing, while a second adaptor Utp18 recruits Mtr4 to cleaved rRNA fragments destined for degradation by the exosome.
Title: The Exosome Is Recruited to RNA Substrates through Specific Adaptor Proteins.
protein A-tagged Nop53p coprecipitated the 27S and 7S pre-rRNAs, and His-Nop53p also bound directly 5.8S rRNA in vitro, which is consistent with a role for Nop53p in pre-rRNA processing
Title: Nop53p, an essential nucleolar protein that interacts with Nop17p and Nip7p, is required for pre-rRNA processing in Saccharomyces cerevisiae.
Nop53p is a late-acting factor in the nuclear maturation of 60S ribosomal subunits, which is required for normal acquisition of export competence.
Title: Nop53p is required for late 60S ribosome subunit maturation and nuclear export in yeast.
Deletion or mutations within NOP53 cause significant growth defects and display significant 60 S subunit deficiencies, an imbalance in the 40 S:60 S ratio, and defects in progression beyond the 27 S stage of 25 S rRNA maturation during 60 S biogenesis.
Title: Nop53p is a novel nucleolar 60S ribosomal subunit biogenesis protein.

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Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Homology

Orthologs from OrthoDB

Gene Ontology Provided by SGD

Function	Evidence Code	Pubs
enables 5S rRNA binding	IBA Inferred from Biological aspect of Ancestor more info
enables RNA binding	IEA Inferred from Electronic Annotation more info
enables rRNA binding	IDA Inferred from Direct Assay more info	PubMed

Process	Evidence Code	Pubs
involved_in maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA)	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in rRNA processing	IBA Inferred from Biological aspect of Ancestor more info
involved_in rRNA processing	IEA Inferred from Electronic Annotation more info
involved_in rRNA processing	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in ribosomal large subunit assembly	IBA Inferred from Biological aspect of Ancestor more info
involved_in ribosomal large subunit export from nucleus	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in ribosome biogenesis	IEA Inferred from Electronic Annotation more info

Component	Evidence Code	Pubs
part_of nuclear exosome (RNase complex)	IMP Inferred from Mutant Phenotype more info	PubMed
is_active_in nucleolus	IBA Inferred from Biological aspect of Ancestor more info
located_in nucleolus	IDA Inferred from Direct Assay more info	PubMed
located_in nucleolus	IEA Inferred from Electronic Annotation more info
located_in nucleoplasm	IEA Inferred from Electronic Annotation more info
located_in nucleus	HDA more info	PubMed
located_in nucleus	IDA Inferred from Direct Assay more info	PubMed
located_in nucleus	IEA Inferred from Electronic Annotation more info

General protein information

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Preferred Names: Nop53p

NP_015179.1

Nucleolar protein; involved in biogenesis of the 60S subunit of the ribosome; interacts with rRNA processing factors Cbf5p and Nop2p and with the nucleolar proteins Nop17p and Nip7p; null mutant is viable but growth is severely impaired