HHF1 / YBR009C Overview
- Standard Name
- HHF1
- Systematic Name
- YBR009C
- SGD ID
- SGD:S000000213
- Feature Type
- ORF , Verified
- Description
- Histone H4; core histone protein required for chromatin assembly and chromosome function; one of two identical histone proteins (see also HHF2); contributes to telomeric silencing; involved in mRNA multiplexing; N-terminal domain involved in maintaining genomic integrity 1 2 3 4 5 6 7
- Name Description
- Histone H Four
- Paralog
- HHF2
- Comparative Info
-
Sequence
The S. cerevisiae Reference Genome sequence is derived from laboratory strain S288C. Download DNA or protein sequence, view genomic context and coordinates. Click "Sequence Details" to view all sequence information for this locus, including that for other strains.
Analyze Sequence
S288C only
BLASTN | BLASTP | Design Primers | Restriction Fragment Map | Restriction Fragment Sizes | Six-Frame Translation
S288C vs. other species
BLASTN vs. fungi | BLASTP at NCBI | BLASTP at NCBI | BLASTP vs. fungi
S288C vs. other strains
Protein
Basic sequence-derived (length, molecular weight, isoelectric point) and experimentally-determined (median abundance, median absolute deviation) protein information. Click "Protein Details" for further information about the protein such as half-life, abundance, domains, domains shared with other proteins, protein sequence retrieval for various strains, physico-chemical properties, protein modification sites, and external identifiers for the protein.
- Length (a.a.)
- 103
- Mol. Weight (Da)
- 11386.6
- Isoelectric Point
- 11.91
- Median Abundance (molecules/cell)
- 25215 +/- 17144
Alleles
Curated mutant alleles for the specified gene, listed alphabetically. Click on the allele name to open the allele page. Click "SGD search" to view all alleles in search results.
View all HHF1 alleles in SGD search
Gene Ontology
GO Annotations consist of four mandatory components: a gene product, a term from one of the three Gene Ontology (GO) controlled vocabularies (Molecular Function, Biological Process, and Cellular Component), a reference, and an evidence code. SGD has manually curated and high-throughput GO Annotations, both derived from the literature, as well as computational, or predicted, annotations. Click "Gene Ontology Details" to view all GO information and evidence for this locus as well as biological processes it shares with other genes.
- Summary
- DNA-binding subunit of the nuclear nucleosome; involved in chromatin assembly/disassembly, histone H3-K79 methylation, and tRNA gene-mediated chromatin silencing; also involved in sexual sporulation resulting in formation of a cellular spore
View computational annotations
Molecular Function
- Manually Curated
- enables DNA binding (TAS)
Biological Process
- Manually Curated
- involved in chromatin organization (TAS)
Cellular Component
- Manually Curated
- part of nucleosome (TAS)
- part of replication fork protection complex (IDA)
Complex
Macromolecular complex annotations are imported from the Complex Portal. These annotations have been derived from physical molecular interaction evidence extracted from the literature and cross-referenced in the entry, or by curator inference from information on homologs in closely related species or by inference from scientific background.
Phenotype
Phenotype annotations for a gene are curated single mutant phenotypes that require an observable (e.g., "cell shape"), a qualifier (e.g., "abnormal"), a mutant type (e.g., null), strain background, and a reference. In addition, annotations are classified as classical genetics or high-throughput (e.g., large scale survey, systematic mutation set). Whenever possible, allele information and additional details are provided. Click "Phenotype Details" to view all phenotype annotations and evidence for this locus as well as phenotypes it shares with other genes.
- Summary
- Non-essential gene, due to the presence of two identical genes, HHF1 and HHF2; null mutation leads to chromosome instability and decreased telomere length; overexpression causes abnormal budding index and G2 phase progression
Classical Genetics
- overexpression
- null
- reduction of function
- null
- bud morphology: abnormal
- chemical compound accumulation: abnormal
- competitive fitness: decreased
- endoplasmic reticulum morphology: abnormal
- haploproficient
- innate thermotolerance: decreased
- metal resistance: decreased
- protein activity: increased
- resistance to chemicals: decreased
- resistance to chemicals: increased
- silencing: decreased
- sporulation efficiency: increased
- stress resistance: decreased
- utilization of nitrogen source: decreased rate
- viable
- overexpression
Large-scale Survey
Interaction
Interaction annotations are curated by BioGRID and include physical or genetic interactions observed between at least two genes. An interaction annotation is composed of the interaction type, name of the interactor, assay type (e.g., Two-Hybrid), annotation type (e.g., manual or high-throughput), and a reference, as well as other experimental details. Click "Interaction Details" to view all interaction annotations and evidence for this locus, including an interaction visualization.
1566 total interactions for 797 unique genes
Physical Interactions
- Affinity Capture-Luminescence: 3
- Affinity Capture-MS: 669
- Affinity Capture-RNA: 16
- Affinity Capture-Western: 88
- Biochemical Activity: 57
- Co-crystal Structure: 4
- Co-localization: 10
- Co-purification: 13
- Cross-Linking-MS (XL-MS): 2
- Far Western: 2
- FRET: 3
- PCA: 7
- Protein-peptide: 6
- Protein-RNA: 1
- Proximity Label-MS: 3
- Reconstituted Complex: 132
- Two-hybrid: 6
Genetic Interactions
- Dosage Growth Defect: 5
- Dosage Lethality: 14
- Dosage Rescue: 11
- Negative Genetic: 345
- Phenotypic Enhancement: 11
- Phenotypic Suppression: 34
- Positive Genetic: 59
- Synthetic Growth Defect: 27
- Synthetic Lethality: 7
- Synthetic Rescue: 31
Regulation
The number of putative Regulators (genes that regulate it) and Targets (genes it regulates) for the given locus, based on experimental evidence. This evidence includes data generated through high-throughput techniques. Click "Regulation Details" to view all regulation annotations, shared GO enrichment among regulation Targets, and a regulator/target diagram for the locus.
- Regulators
- 32
- Targets
- 0
Expression
Expression data are derived from records contained in the Gene Expression Omnibus (GEO), and are first log2 transformed and normalized. Referenced datasets may contain one or more condition(s), and as a result there may be a greater number of conditions than datasets represented in a single clickable histogram bar. The histogram division at 0.0 separates the down-regulated (green) conditions and datasets from those that are up-regulated (red). Click "Expression Details" to view all expression annotations and details for this locus, including a visualization of genes that share a similar expression pattern.
Summary Paragraph
A summary of the locus, written by SGD Biocurators following a thorough review of the literature. Links to gene names and curated GO terms are included within the Summary Paragraphs.
Last Updated: 2007-05-31
Literature
All manually curated literature for the specified gene, organized into topics according to their relevance to the gene (Primary Literature, Additional Literature, or Review). Click "Literature Details" to view all literature information for this locus, including shared literature between genes.