Subunit of the RNA polymerase II mediator complex; associates with core polymerase subunits to form the RNA polymerase II holoenzyme; essential for transcriptional regulation; protein abundance increases in response to DNA replication stress
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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
MED6/YHR058C is located on the right arm of chromosome VIII between peptidyl-prolyl cis-trans isomerase CPR2 and uncharacterized protein FYV4; coding sequence is 888 nucleotides long with 9 synonymous and 3 nonsynonymous SNPs
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
Med6p is 295 amino acids long, low in abundance and average half-life; phosphorylated on 8 residues; protein abundance increases in response to DNA replication stress
Length (a.a.)
295
Mol. Weight (Da)
32814.3
Isoelectric Point
4.96
Median Abundance (molecules/cell)
3345 +/- 1396
Half-life (hr)
9.7
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.
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
Subunit of the core mediator complex, which acts as a bridge between transcription factors and RNA Pol II; has transcription coactivator activity and is involved in assembly of the RNA Pol II preinitiation complex and positive regulation of Pol II transcription
Functional Networks display how gene products work together in biological systems. The Shared Annotations
network shows genes with similar GO annotations, suggesting functional relationships. GO-CAMs (Gene
Ontology Causal Activity Models) are manually curated pathway models that illustrate how molecular
activities of multiple gene products connect through causal relationships to carry out biological
processes. GO-CAMs integrate Molecular Function, Biological Process, and Cellular Component information
into unified pathway representations based on published experimental evidence. Click "View GO-CAM at Gene
Ontology" to explore the interactive model at AmiGO.
Click on a gene or Biological Process GO term name to go to its specific page within SGD; drag any of the gene or GO
term name objects around within the visualization for easier viewing; click “Reset” to automatically redraw the
diagram; filter the genes that share GO Biological Process terms with the given gene by the number of terms they
share by clicking anywhere on the slider bar or dragging the tab to the desired filter number.
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 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
Essential gene in reference strain S288C; reduction-of-function and repressible alleles show chromosome instability with increased chromosomal rearrangements and chromosome loss; conditional mutants show heat sensitivity with decreased nucleolus size at restrictive temperature and altered drug responses including decreased resistance to camptothecin, acivicin, and K28 killer toxin but increased resistance to micafungin and Aβ42; is haploinsufficient and shows abnormal silencing when overexpressed
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
Med6p interacts physically with proteins involved in transcription by RNA polymerase II; MED6 interacts genetically with genes involved in transcription by RNA polymerase II
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
MED6 encodes a component of the head module of the Mediator transcriptional regulation complex. The Mediator complex is highly conserved from yeast to human, and is a central player in the transcriptional regulation of protein-coding genes, being required for nearly all transcription by RNA polymerase II (RNAPII). Mediator bridges activators and the general transcription machinery. The core Mediator complex contains three distinct head, middle, and tail modules. Other subunits of the head module are encoded by MED8, MED11, SRB2/MED20, SRB4/MED17, SRB5/MED18, SRB6/MED22, and ROX3/MED19. The head module binds weakly to a minimal preinitiation complex (PIC) consisting of RNAPII, general initiation factors TFIIF, TFIIB and TBP, and promoter DNA to stimulate basal transcription. Mediator interacts physically with diverse DNA-binding transactivators to communicate transcription signals to RNAPII and general initiation factors to turn transcription on or off. Mediator also has important functions in post-initiation steps, such as recruiting and coordinating the activities of RNAPII elongation factors.
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.
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).