YAP5 / YIR018W Overview
- Standard Name
- YAP5 1
- Systematic Name
- YIR018W
- SGD ID
- SGD:S000001457
- Feature Type
- ORF , Verified
- Description
- Basic leucine zipper (bZIP) iron-sensing transcription factor; senses high-iron conditions via two Fe/S clusters bound to its activator domain; involved in diauxic shift; YAP5 has a paralog, YAP7, that arose from the whole genome duplication 1 2 3 4 5
- Name Description
- Yeast AP-1 1
- Paralog
- YAP7 3
- 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
- YAP5/YIR018W is located on the right arm of chromosome IX between MET28 bZIP transcriptional activator and FLO11; coding sequence is 738 nucleotides long with 16 SNPs, 7 of which cause amino acid polymorphisms; YAP5 has a paralog, YAP7, 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 | CGD Synteny Browser
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
- Yap5p is 245 amino acids long, extremely low in abundance; contains a disordered region; phosphorylated on T54 and S199
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 YAP5 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
- Sequence-specific DNA binding transcription factor involved in the regulation of transcription by RNA polymerase II in response to iron; also involved in the regulation of telomeric chromatin silencing
View computational annotations
Molecular Function
- Manually Curated
Biological Process
- Manually Curated
- involved in cellular response to iron ion (IMP)
- involved in negative regulation of transcription by RNA polymerase II (IMP)
- involved in positive regulation of transcription by RNA polymerase II (IMP, IDA)
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
- YAP5/YIR018W is a non-essential gene in reference strain S288C; null mutants exhibit increased fitness and resistance to antimalarial quinine, abnormal vacuolar morphology, impaired filamentous growth and use of various nitrogen sources; homozygous diploid nulls are sensitive to preservative sorbate and heat shock; heterozygous diploid nulls are haploinsufficient; overexpression increases filamentous growth
Classical Genetics
- null
- competitive fitness: increased
- filamentous growth: decreased
- haploinsufficient
- innate thermotolerance: decreased
- invasive growth: absent
- resistance to chemicals: decreased
- resistance to chemicals: increased
- sporulation: abnormal
- utilization of nitrogen source: decreased rate
- vacuolar morphology: abnormal
- 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.
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.
- Summary
- YAP5 encodes an AP-1 type transcription factor which contains a basic leucine zipper domain (bZIP), and binds to a consensus cis-acting Yap recognition element (YRE; 5'-TTAC/GTAA-3'). Yap5p is the only member of the Yap family that regulates the expression of vacuolar iron transport in response to cytosolic iron, and is responsible for the high-iron induction of CCC1, which encodes a vacuolar iron transporter. Yap5p is constitutively localized to the nucleus even in the absense of iron, and binding of Yap5p to the CCC1 promoter is iron independent, but transcriptional activation does require iron. Yap5p regulates the expression of glutaredoxin GRX4 in a similar manner; binding to its promoter is iron-independent, while activation of transcription is iron-dependent. Yap5p also mediates induction of TYW1, a gene that encodes an iron-sulfur cluster enzyme that participates in the synthesis of wybutosine modified tRNA, thereby providing cellular protection from high iron toxicity by the consumption of free cytosolic iron through the formation of protein-bound iron-sulfur clusters. A limited number of other genes have also been identified as Yap5p targets: CUP1, YHB1, PHO3, and GDH1.
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: 2025-08-13
All Curated Literature
All manually curated literature for the specified gene, shown as a count of references by year of publication followed by the most recent papers. Click "Literature Details" or "See all" to view all literature information for this locus, organized into topics according to their relevance to the gene (Primary Literature, Additional Literature, or Review).
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