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HMO1 Hmo1p [ Saccharomyces cerevisiae S288C ]

Gene ID: 851754, updated on 18-Sep-2024

Summary

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Official Symbol
HMO1
Official Full Name
Hmo1p
Primary source
SGD:S000002581
Locus tag
YDR174W
See related
AllianceGenome:SGD:S000002581; FungiDB:YDR174W; VEuPathDB:YDR174W
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Saccharomyces cerevisiae S288C (strain: S288C)
Lineage
Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; Saccharomycetales; Saccharomycetaceae; Saccharomyces
Also known as
HSM2
Summary
Enables DNA binding activity, bending; double-stranded DNA binding activity; and four-way junction DNA binding activity. Involved in several processes, including chromosome organization; regulation of transcription, DNA-templated; and transcriptional start site selection at RNA polymerase II promoter. Located in cytosol; nucleolus; and rDNA heterochromatin. Part of small-subunit processome. Colocalizes with chromatin. [provided by Alliance of Genome Resources, Apr 2022]
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Genomic context

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See HMO1 in Genome Data Viewer
Location:
chromosome: IV
Exon count:
1
Sequence:
Chromosome: IV; NC_001136.10 (812110..812850)

Chromosome IV - NC_001136.10Genomic Context describing neighboring genes Neighboring gene translation termination factor GTPase eRF3 Neighboring gene inositol polyphosphate multikinase Neighboring gene mitochondrial 37S ribosomal protein RSM24 Neighboring gene histone acetyltransferase NGG1

Genomic regions, transcripts, and products

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Genomic Sequence:
NC_001136.10

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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Related articles in PubMed

  1. Targeting of Hmo1 to subcompartments of the budding yeast nucleolus. Girke P, et al. Mol Biol Cell, 2023 Mar 1. PMID 36696177, Free PMC Article
  2. In vitro studies on non-canonical DNA binding specificities of KAP6 and HMO1 and mechanistic insights into DNA bound and unbinding dynamics of KAP6. Rajakumara E, et al. Int J Biol Macromol, 2020 Oct 1. PMID 32497665
  3. Yeast HMO1: Linker Histone Reinvented. Panday A, et al. Microbiol Mol Biol Rev, 2017 Mar. PMID 27903656, Free PMC Article
  4. Oligomerization of Hmo1 mediated by box A is essential for DNA binding in vitro and in vivo. Kasahara K, et al. Genes Cells, 2016 Dec. PMID 27860073
  5. Both HMG boxes in Hmo1 are essential for DNA binding in vitro and in vivo. Higashino A, et al. Biosci Biotechnol Biochem, 2015. PMID 25410521

See all (148) citations in PubMed

GeneRIFs: Gene References Into Functions

What's a GeneRIF?
  1. Single-molecule study reveals Hmo1, not Hho1, promotes chromatin assembly in budding yeast.
    Title: Single-molecule study reveals Hmo1, not Hho1, promotes chromatin assembly in budding yeast.
  2. Targeting of Hmo1 to subcompartments of the budding yeast nucleolus.
    Title: Targeting of Hmo1 to subcompartments of the budding yeast nucleolus.
  3. Hmo1 Protein Affects the Nucleosome Structure and Supports the Nucleosome Reorganization Activity of Yeast FACT.
    Title: Hmo1 Protein Affects the Nucleosome Structure and Supports the Nucleosome Reorganization Activity of Yeast FACT.
  4. Interphase chromosome condensation in nutrient-starved conditions requires Cdc14 and Hmo1, but not condensin, in yeast.
    Title: Interphase chromosome condensation in nutrient-starved conditions requires Cdc14 and Hmo1, but not condensin, in yeast.
  5. Physiological function of FKBP12, a primary target of rapamycin/FK506: a newly identified role in transcription of ribosomal protein genes in yeast.
    Title: Physiological function of FKBP12, a primary target of rapamycin/FK506: a newly identified role in transcription of ribosomal protein genes in yeast.
  6. Promotion of Hyperthermic-Induced rDNA Hypercondensation in Saccharomyces cerevisiae.
    Title: Promotion of Hyperthermic-Induced rDNA Hypercondensation in Saccharomyces cerevisiae.
  7. Persistent induction of DNA double-strand breaks or mTORC1 inhibition by rapamycin results in reduced levels of HMO1 mRNA, but only in the presence of Tor1p. This down-regulation is accompanied by eviction of Ifh1p and recruitment of Crf1p, followed by concerted dissociation of Hmo1p and Tor1p.
    Title: DNA damage regulates direct association of TOR kinase with the RNA polymerase II-transcribed HMO1 gene.
  8. HMO1 appears to have evolved a unique linker histone-like function involving the ability to stabilize both conventional nucleosome arrays as well as DNA regions characterized by low nucleosome density or the presence of noncanonical nucleosomes.
    Title: Yeast HMO1: Linker Histone Reinvented.
  9. studied the genome-wide binding patterns of Nhp6, Hmo1 and the SWI/SNF complex, finding that most of gene promoters presenting high occupancy of this complex also display high enrichment of these HMG proteins.
    Title: Role of Nhp6 and Hmo1 in SWI/SNF occupancy and nucleosome landscape at gene regulatory regions.
  10. Hmo1p functions to control DNA end resection, thereby preventing error-prone A-EJ repair and directing repairs towards classical NHEJ. The very low efficiency of DSB repair in kuDeltahmo1Delta cells further suggests that excessive DNA resection is inhibitory for A-EJ.
    Title: Control of DNA end resection by yeast Hmo1p affects efficiency of DNA end-joining.
Submit: New GeneRIF Correction See all GeneRIFs (27)

Interactions

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Products Interactant Other Gene Complex Source Pubs Description

General gene information

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Homology

Gene Ontology Provided by SGD

Function Evidence Code Pubs
enables DNA binding IEA
Inferred from Electronic Annotation
more info
  
enables DNA binding, bending IDA
Inferred from Direct Assay
more info
 PubMed 
enables double-stranded DNA binding IDA
Inferred from Direct Assay
more info
 PubMed 
enables four-way junction DNA binding IDA
Inferred from Direct Assay
more info
 PubMed 
Process Evidence Code Pubs
involved_in DNA topological change IMP
Inferred from Mutant Phenotype
more info
 PubMed 
acts_upstream_of_or_within chromatin organization IDA
Inferred from Direct Assay
more info
 PubMed 
acts_upstream_of_or_within chromatin organization IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in chromatin remodeling IDA
Inferred from Direct Assay
more info
 PubMed 
involved_in chromosome condensation IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in chromosome organization IDA
Inferred from Direct Assay
more info
 PubMed 
involved_in nucleophagy IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in rDNA chromatin condensation IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in regulation of ribosomal protein gene transcription by RNA polymerase II IGI
Inferred from Genetic Interaction
more info
 PubMed 
involved_in regulation of ribosomal protein gene transcription by RNA polymerase II IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in regulation of transcription by RNA polymerase I IGI
Inferred from Genetic Interaction
more info
 PubMed 
involved_in regulation of transcription by RNA polymerase I IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in transcriptional start site selection at RNA polymerase II promoter IMP
Inferred from Mutant Phenotype
more info
 PubMed 
Component Evidence Code Pubs
located_in chromatin IDA
Inferred from Direct Assay
more info
 PubMed 
located_in cytoplasm IDA
Inferred from Direct Assay
more info
 PubMed 
located_in cytosol IDA
Inferred from Direct Assay
more info
 PubMed 
is_active_in nucleolus IDA
Inferred from Direct Assay
more info
 PubMed 
located_in nucleolus IDA
Inferred from Direct Assay
more info
 PubMed 
located_in nucleolus IEA
Inferred from Electronic Annotation
more info
  
located_in nucleus IDA
Inferred from Direct Assay
more info
 PubMed 
located_in nucleus IEA
Inferred from Electronic Annotation
more info
  
located_in rDNA heterochromatin IDA
Inferred from Direct Assay
more info
 PubMed 
part_of small-subunit processome IDA
Inferred from Direct Assay
more info
 PubMed 

General protein information

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Preferred Names
Hmo1p
NP_010459.1
  • Chromatin-associated high mobility group (HMG) family member; role in compacting, bending, bridging and looping DNA; lysine-rich CTD is essential for chromatin assembly, forming condensates with dsDNA; functionally similar to linker histone H1; rDNA-binding component regulates transcription from RNAPI promoters; regulates start site selection of ribosomal protein genes via RNAPII promoters; role in genome maintenance; associates with a 5'-3' DNA helicase and Fpr1p

NCBI Reference Sequences (RefSeq)

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Genome Annotation

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference assembly

Genomic

  1. NC_001136.10 Reference assembly

    Range
    812110..812850
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. NM_001180481.1 → NP_010459.1  TPA: Hmo1p [Saccharomyces cerevisiae S288C]

    See identical proteins and their annotated locations for NP_010459.1

    Status: REVIEWED

    UniProtKB/Swiss-Prot
    D6VSF6, Q03973
    UniProtKB/TrEMBL
    A6ZYD2, B3LGA9, C7GN23, C8Z588, G2WAS2, N1PAE8
    Conserved Domains (1) summary
    COG5648
    Location:36 → 246
    NHP6B; Chromatin-associated proteins containing the HMG domain [Chromatin structure and dynamics]
Nucleotide Protein
Heading Accession and Version
Protein Accession Links
GenPept Link UniProtKB Link
Q03973.1

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