SSB1 / YDL229W Overview
- Standard Name
- SSB1 1
- Systematic Name
- YDL229W
- SGD ID
- SGD:S000002388
- Aliases
- YG101 20
- Feature Type
- ORF , Verified
- Description
- Cytoplasmic ATPase that is a ribosome-associated molecular chaperone; functions with J-protein partner Zuo1p; may be involved in folding of newly-made polypeptide chains; member of the HSP70 family; interacts with phosphatase subunit Reg1p; SSB1 has a paralog, SSB2, that arose from the whole genome duplication 1 2 3 4 5 6 7 8
- Name Description
- Stress-Seventy subfamily B 1
- Paralog
- SSB2 8
- 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.
- Summary
- SSB1 is located on the left arm of chromosome IV near the telomere and between PTP1 phosphotyrosine-specific protein phosphatase and replication origin ARS404; coding sequence is 1842 nucleotides long with 39 synonymous SNPs; SSB1 has a paralog, SSB2, that arose from the whole genome duplication
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 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.
- Summary
- Ssb1p is 613 amino acids long, of moderate half-life, high in abundance; contains 9 70kDa heat shock protein signature domains; carbamoylated on C54, N-glycosylated on N504, ubiquitinylated on 20 lysines, succinylated on 18 lysines, sumoylated on 5 lysines, phosphorylated on 31 residues
- Length (a.a.)
- 613
- Mol. Weight (Da)
- 66590.2
- Isoelectric Point
- 5.08
- Median Abundance (molecules/cell)
- 22452 +/- 15599
- Half-life (hr)
- 9.6
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 SSB1 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
- ATPase involved in protein folding, export of ribosomal subunit from nucleus, regulation of translation fidelity, rRNA processing; associated with polysomes and localized in the cytoplasm
View computational annotations
Molecular Function
- Manually Curated
- enables ATP hydrolysis activity (IDA)
- enables calmodulin binding (IDA)
- enables unfolded protein binding (IDA)
Biological Process
- Manually Curated
- involved in 'de novo' cotranslational protein folding (IDA)
- involved in cytoplasmic translation (IPI, IMP)
- involved in regulation of translational fidelity (IMP)
- involved in ribosomal subunit export from nucleus (IGI)
- involved in rRNA processing (IGI)
- involved in translational frameshifting (IMP)
- involved in translational termination (IMP)
Cellular Component
- Manually Curated
- located in cytoplasm (IDA)
- located in plasma membrane (HDA)
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; null is petite-negative, displays small defect in vacuolar fragmentation, decreased competitive fitness, sensitivity to Congo Red, streptomycin; null petite displays increased growth rate
Classical Genetics
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.
- Summary
- Ssb1p interacts physically with proteins involved in transcription; SSB1 interacts genetically with genes involved in protein catabolism; the ssb1 null mutant is viable, the null mutant of paralog ssb2 is viable, the ssb1 ssb2 double mutant displays a synthetic growth defect
1391 total interactions for 857 unique genes
Physical Interactions
- Affinity Capture-MS: 1168
- Affinity Capture-RNA: 12
- Affinity Capture-Western: 38
- Co-fractionation: 1
- Co-localization: 1
- Co-purification: 3
- PCA: 5
- Proximity Label-MS: 3
- Reconstituted Complex: 8
- Two-hybrid: 2
Genetic Interactions
- Dosage Lethality: 2
- Dosage Rescue: 30
- Negative Genetic: 82
- Phenotypic Enhancement: 4
- Phenotypic Suppression: 6
- Positive Genetic: 7
- Synthetic Growth Defect: 13
- Synthetic Lethality: 3
- Synthetic Rescue: 3
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
- 7
- 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: 2006-02-07
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.