THI2 / YBR240C Overview


Standard Name
THI2 1
Systematic Name
YBR240C
SGD ID
SGD:S000000444
Aliases
PHO6 , phoF 7
Feature Type
ORF , Verified
Description
Transcriptional activator of thiamine biosynthetic genes; interacts with regulatory factor Thi3p to control expression of thiamine biosynthetic genes with respect to thiamine availability; acts together with Pdc2p to respond to thiaminediphosphate demand, possibly as related to carbon source availability; zinc finger protein of the Zn(II)2Cys6 type 1 2 3 4 5 6
Name Description
THIamine metabolism
Comparative Info
Sequence Details

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.


Protein Details

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.)
450
Mol. Weight (Da)
51835.4
Isoelectric Point
8.63
Median Abundance (molecules/cell)
1226

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. Click "YeastMine" to view all alleles in YeastMine.


View all THI2 alleles in SGD search | YeastMine

Gene Ontology Details

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 transcription activator involved in thiamine biosynthesis

View computational annotations

Molecular Function

Manually Curated

Cellular Component

Manually Curated
Phenotype Details

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.


Interaction Details

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.


40 total interactions for 35 unique genes

Physical Interactions

  • Affinity Capture-MS: 1
  • Co-localization: 1
  • Co-purification: 1
  • Reconstituted Complex: 1
  • Two-hybrid: 1

Genetic Interactions

  • Dosage Rescue: 3
  • Negative Genetic: 25
  • Positive Genetic: 6
  • Synthetic Lethality: 1
Regulation Details

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
THI2 encodes a transcription factor that is a member of the C6 zinc finger class, containing a DNA binding domain also known as the Zn2Cys6 binuclear zinc cluster or zinc knuckle. Thi2p is required for transcriptional activation of a subset of genes involved in thiamin pyrophosphate (TPP; also known as ThDP) biosynthesis in response to thiamin deprivation. The targets of Thi2p include PHO3, THI4, and THI20. Thi2p can bind independently to target promoters, but its targets are shared with those of the transcription factor Pdc2p, and binding of Thi2p to promoters is enhanced in the presence of Pdc2p and another regulatory protein, Thi3p, that binds both Thi2p and Pdc2p. In the absence of thiamin, Thi3p interaction with Thi2p and Pdc2p allows them to activate transcription, possibly by a conformational change that unmasks their activation domains. In the presence of TPP (i.e., under thiamin-replete conditions), Thi3p binding to TPP releases it from Thi2p and Pdc2p, de-activating them.
Regulators
9
Targets
36
Expression Details

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.


Literature Details

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.


Primary
13
Additional
28
Reviews
10

Resources