SIP3 / YNL257C Overview
- Standard Name
- SIP3 1 2
- Systematic Name
- YNL257C
- SGD ID
- SGD:S000005201
- Aliases
- LAM3 4
- Feature Type
- ORF , Verified
- Description
- Putative sterol transfer protein; has a probable role in retrograde transport of sterols from the plasma membrane to the ER; co-localizes to puncta in the cortical ER with Ysp2p; contains GRAM, StART-like (VASt) and two PH-like domains; one of 6 StART-like domain-containing proteins in yeast that may be involved in sterol transfer between intracellular membranes; conserved across eukaryotes; previously identified as a transcription cofactor that interacts with DNA-bound Snf1p 2 3 4
- Name Description
- SNF1-Interacting Protein 1
- Paralog
- LAM1
- 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.
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.
- Length (a.a.)
- 1229
- Mol. Weight (Da)
- 142839.1
- Isoelectric Point
- 8.89
- Median Abundance (molecules/cell)
- 1367 +/- 1057
- Half-life (hr)
- 19.8
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 SIP3 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
- Protein identified as having a role both in transcription and in intracellular sterol transport; localizes to the cortical ER
View computational annotations
Molecular Function
- Manually Curated
- enables transcription coregulator activity (IDA)
Biological Process
- Manually Curated
- involved in intracellular sterol transport (IMP)
- involved in positive regulation of transcription by RNA polymerase II (IDA)
Cellular Component
- Manually Curated
- located in cortical endoplasmic reticulum (IDA)
- located in cytoplasm (HDA)
- located in endoplasmic reticulum (HDA)
- 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.
Classical Genetics
- null
- chromosome/plasmid maintenance: abnormal
- competitive fitness: decreased
- competitive fitness: increased
- desiccation resistance: decreased
- heat sensitivity: increased
- mitotic recombination: decreased
- protein activity: increased
- resistance to chemicals: decreased
- resistance to chemicals: increased
- stress resistance: decreased
- vegetative growth: decreased
- viable
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.
- Summary
- The sip3 null mutant is viable; the null mutant of paralog lam1 is viable; the sip3 lam1 double mutant has not been annotated for phenotype.
81 total interactions for 78 unique genes
Physical Interactions
- Affinity Capture-MS: 14
- Affinity Capture-RNA: 1
- Biochemical Activity: 1
- Two-hybrid: 2
Genetic Interactions
- Negative Genetic: 54
- Phenotypic Enhancement: 2
- Phenotypic Suppression: 2
- Positive Genetic: 1
- Synthetic Growth Defect: 2
- Synthetic Rescue: 2
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
- SIP3 encodes a transcription cofactor that contains a pleckstrin homology domain, a coiled-coil, and two transmembrane domains. Sip3p also contains a leuclne repeat motif in its C-terminus, through which it interacts with DNA-bound Snf1p to activate transcription. While Sip3p appears to play a role in the SNF1 kinase pathway, little is known about its function.
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
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.