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Scp160p interacts with free and membrane-bound polyribosomes that are dependent upon the presence of specific mRNAs and Bfr1p (8, 10). Scp160p associates with specific (as opposed to random) messages, among which are mRNAs derived from the BIK1 (microtubule-associated protein), DHH1 (helicase), NAM8 (snRNP component), YOR338W, and YOL155C (glucosidase) genes (11). Despite its presence on cytosolic polyribosomes, Scp160p is predominantly associated with the nuclear envelope and the endoplasmic reticulum (ER) (6). Accumulation of Scp160p-ribosome complexes at the ER requires the function of microtubules but is independent of the actin cytoskeleton (8).

Scp160p is in close proximity to translation elongation factor 1A and the WD40 (Trp-Asp 40)-repeat containing protein Asc1p at ribosomes. The C-terminus of Scp160p is essential for ribosome binding, and this interaction depends on Asc1p. It has been suggested that Scp160p connects specific mRNAs, ribosomes, and a translation factor with an adaptor for signalling molecules. These interactions might regulate the translation activity of ribosomes programmed with specific mRNAs (2).Scp160p is also an essential component of the mating response pathway and is the first RNA-binding protein to be indentified as a G protein effector. Scp160p binds the Gpa1p GTPase and signaling by activated Gpa1p requires this direct coupling to Scp160p (4).

SCP160 interacts genetically and biochemically with EAP1, whose protein product functions in translation as an eIF4E-binding protein with additional uncharacterized spindle pole body functions, confirming that Scp160p plays a role in translation. Loss of either gene results in significant changes in either the complex associations or subcellular distribution of the other protein (9). Disruption of SCP160 also results in decreased viability, abnormal morphology, and increased DNA content, a complex phenotype that is not reversible by transformation with a plasmid carrying the wild-type gene (1). Further, loss of Scp160p results in changes in both the abundance and distribution between soluble and membrane-associated fractions for some messages (YOR338W), and in a subtle shift from soluble polyribosomes to soluble mRNPs for others (DHH1 and YOR338W) (11).", "date_edited": "2005-03-30"}, "literature_overview": {"primary_count": 39, "additional_count": 33, "review_count": 10, "go_count": 7, "phenotype_count": 6, "disease_count": 0, "interaction_count": 83, "regulation_count": 8, "ptm_count": 14, "funComplement_count": 0, "htp_count": 63, "total_count": 210}, "disease_overview": {"manual_disease_terms": [], "htp_disease_terms": [], "computational_annotation_count": 0, "date_last_reviewed": null}, "ecnumbers": [], "URS_ID": null, "main_strain": "S288C", "regulation_overview": {"regulator_count": 8, "target_count": 0}, "reference_mapping": {"604394": 1, "539927": 2, "537463": 3, "549288": 4, "622406": 5, "629787": 6, "398901": 7, "588648": 8, "546048": 9, "587409": 10, "552795": 11}, "history": [{"category": "Name", "history_type": "LSP", "note": "Name: SCP160", "date_created": "2000-05-19", "references": [{"id": 604394, "display_name": "Wintersberger U, et al. (1995)", "citation": "Wintersberger U, et al. (1995) Scp160p, a new yeast protein associated with the nuclear membrane and the endoplasmic reticulum, is necessary for maintenance of exact ploidy. Yeast 11(10):929-44", "pubmed_id": 8533468, "link": "/reference/S000054401", "year": 1995, "urls": [{"display_name": "DOI full text", "link": "http://dx.doi.org/10.1002/yea.320111004"}, {"display_name": "PubMed", "link": "http://www.ncbi.nlm.nih.gov/pubmed/8533468"}]}]}], "complexes": []}, tabs: {"id": 1285239, "protein_tab": true, "interaction_tab": true, "summary_tab": true, "go_tab": true, "sequence_section": true, "expression_tab": true, "phenotype_tab": true, "literature_tab": true, "wiki_tab": false, "regulation_tab": true, "sequence_tab": true, "history_tab": true, "homology_tab": true, "disease_tab": false} }; SCP160 | SGD

SCP160 / YJL080C Overview


Standard Name
SCP160 1
Systematic Name
YJL080C
SGD ID
SGD:S000003616
Feature Type
ORF , Verified
Description
Essential RNA-binding G protein effector of mating response pathway; ligand-activated RNA-binding protein that delivers RNAs involved in polarization and perpetualizing mating signal to shmoo tip during pheromone signaling; Scp160p-mediated RNA trafficking essential for chemotropism and successful mating; mainly associated with nuclear envelope and ER, interacts in mRNA-dependent manner with translating ribosomes via multiple KH domains, similar to vertebrate vigilins 2 3 4 5 7
Name Description
S. cerevisiae protein involved in the Control of Ploidy 6
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.)
1222
Mol. Weight (Da)
134788.8
Isoelectric Point
5.59
Median Abundance (molecules/cell)
34834 +/- 14088
Half-life (hr)
12.1

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 SCP160 alleles in SGD search

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
mRNA binding protein involved in mRNA localization, chromatin silencing at silent mating type cassette and telomere, chromosome seggregation and pheromone dependent signal transduction; localizes to cytoplasm, endoplasmic reticulum membrane and polysome

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.


346 total interactions for 286 unique genes

Physical Interactions

  • Affinity Capture-MS: 269
  • Affinity Capture-RNA: 23
  • Affinity Capture-Western: 13
  • Biochemical Activity: 4
  • Co-fractionation: 1
  • Co-localization: 1
  • Co-purification: 1
  • Cross-Linking-MS (XL-MS): 1
  • Protein-RNA: 1
  • Proximity Label-MS: 12
  • Reconstituted Complex: 2
  • Two-hybrid: 3

Genetic Interactions

  • Dosage Growth Defect: 1
  • Dosage Lethality: 2
  • Dosage Rescue: 1
  • Phenotypic Suppression: 1
  • Synthetic Growth Defect: 4
  • Synthetic Lethality: 5
  • Synthetic Rescue: 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.


Regulators
8
Targets
0
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.


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: 2005-03-30

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
39
Additional
33
Reviews
10

Resources