GAL1 / YBR020W Overview
- Standard Name
- GAL1 1 2
- Systematic Name
- YBR020W
- SGD ID
- SGD:S000000224
- Feature Type
- ORF , Verified
- Description
- Galactokinase; phosphorylates alpha-D-galactose to alpha-D-galactose-1-phosphate in the first step of galactose catabolism; expression regulated by Gal4p; human homolog GALK2 complements yeast null mutant; GAL1 has a paralog, GAL3, that arose from the whole genome duplication 3 4 5 6
- Name Description
- GALactose metabolism
- Paralog
- GAL3 5
- 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
- GAL1 is located on the right arm of chromosome II near the centromere and between GAL10 UDP-glucose-4-epimerase and FUR4 uracil permease; GAL10-ncRNA fully overlaps GAL1 on same strand; coding sequence is 1587 nucleotides long with 17 SNPs, 5 of which lead to amino acid polymorphisms; GAL1 has a paralog, GAL3, 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
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
- Gal1p is 528 amino acids long with 4 galactokinase signature domains; phosphorylated on 11 residues, succinylated on K99
- Length (a.a.)
- 528
- Mol. Weight (Da)
- 57940.9
- Isoelectric Point
- 6.72
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 GAL1 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
- Galactokinase involved galactose catabolism and regulation of transcription in response to galactose; localized to the cytoplasm
View computational annotations
Molecular Function
- Manually Curated
- enables galactokinase activity (IMP, IDA)
Biological Process
- Manually Curated
- involved in carbohydrate phosphorylation (IDA)
- involved in galactose catabolic process via UDP-galactose (IMP, IDA)
- involved in positive regulation of transcription by galactose (IGI)
Complex
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.
Pathways
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
- Non-essential gene; null mutant defective in utilizing galactose as a carbon source
Classical Genetics
- null
- chemical compound accumulation: abnormal
- chemical compound accumulation: increased
- chronological lifespan: decreased
- competitive fitness: decreased
- competitive fitness: increased
- endocytosis: decreased
- hyperosmotic stress resistance: decreased
- oxidative stress resistance: decreased
- protein activity: increased
- resistance to chemicals: decreased
- resistance to chemicals: increased
- respiratory growth: absent
- utilization of carbon source: decreased
- utilization of carbon 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.
- Summary
- The gal1 null mutant is viable; the null mutant of paralog gal3 is viable; the gal1 gal3 double mutant displays a variety of genetic interactions; interacts physically with proteins involved in transcription, interacts genetically with genes involved in transcription and carbohydrate metabolism
113 total interactions for 92 unique genes
Physical Interactions
- Affinity Capture-MS: 7
- Affinity Capture-RNA: 5
- Affinity Capture-Western: 2
- Co-purification: 1
- PCA: 2
- Reconstituted Complex: 2
- Two-hybrid: 2
Genetic Interactions
- Dosage Lethality: 1
- Dosage Rescue: 2
- Negative Genetic: 55
- Phenotypic Enhancement: 3
- Phenotypic Suppression: 5
- Positive Genetic: 18
- Synthetic Growth Defect: 4
- Synthetic Rescue: 4
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
- 9
- Targets
- 0
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: 2006-10-12
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.