MRD1 RNA-binding ribosome biosynthesis protein MRD1 [Saccharomyces cerevisiae S288C] - Gene

Summary

Official Symbol: MRD1
Official Full Name: RNA-binding ribosome biosynthesis protein MRD1
Primary source: SGD:S000006316
Locus tag: YPR112C
See related: AllianceGenome:SGD:S000006316; FungiDB:YPR112C; VEuPathDB:YPR112C
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 primary transcript binding activity. Involved in ribosomal small subunit biogenesis. Located in nucleolus. Part of 90S preribosome. Orthologous to human RBM19 (RNA binding motif protein 19). [provided by Alliance of Genome Resources, Dec 2024]
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Chromosome XVI - NC_001148.4 Genomic Context describing neighboring genes

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We propose that the dynamic U3 snoRNA interactions and Mrd1 are essential for establishing the structure of the central core of 18S rRNA that is required for processing and 40S subunit function.
Title: Maturation of the 90S pre-ribosome requires Mrd1 dependent U3 snoRNA and 35S pre-rRNA structural rearrangements.
conclude that Linker 2 has an essential role for Mrd1p beyond just providing a defined length between RBD2 and RBD3
Title: Linker 2 of the eukaryotic pre-ribosomal processing factor Mrd1p is an essential interdomain functionally coupled to upstream RNA Binding Domain 2 (RBD2).
Mrd1p coordinates key events in biosynthesis of small ribosome subunits.
Title: Mrd1p is required for release of base-paired U3 snoRNA within the preribosomal complex.
Mrd1p is required for establishing productive structures within the 90S preribosomal complex.
Title: Mrd1p binds to pre-rRNA early during transcription independent of U3 snoRNA and is required for compaction of the pre-rRNA into small subunit processomes.

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

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

Process	Evidence Code	Pubs
involved_in endonucleolytic cleavage in 5'-ETS of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA)	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA)	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA)	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in nuclear mRNA surveillance	IBA Inferred from Biological aspect of Ancestor more info
involved_in poly(A)+ mRNA export from nucleus	IBA Inferred from Biological aspect of Ancestor more info
involved_in rRNA processing	IEA Inferred from Electronic Annotation more info
involved_in small-subunit processome assembly	IMP Inferred from Mutant Phenotype more info	PubMed

Component	Evidence Code	Pubs
part_of 90S preribosome	HDA more info	PubMed
part_of 90S preribosome	IDA Inferred from Direct Assay more info	PubMed
is_active_in cytoplasm	IBA Inferred from Biological aspect of Ancestor more info
located_in nucleolus	IDA Inferred from Direct Assay more info	PubMed
is_active_in nucleus	IBA Inferred from Biological aspect of Ancestor more info
located_in nucleus	IEA Inferred from Electronic Annotation more info
part_of ribonucleoprotein complex	IBA Inferred from Biological aspect of Ancestor more info
part_of ribonucleoprotein complex	IEA Inferred from Electronic Annotation more info

NP_015437.1

Essential conserved small ribosomal subunit (40s) synthesis factor; component of the 90S preribosome; required for production of 18S rRNA and small ribosomal subunit; contains five consensus RNA-binding domains and binds to the pre-rRNA at two sites within the 18S region

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