HCA4 / YJL033W Overview


Standard Name
HCA4 1
Systematic Name
YJL033W
SGD ID
SGD:S000003570
Aliases
DBP4 2 , ECM24
Feature Type
ORF , Verified
EC Number
3.6.4.13
Description
DEAD box RNA helicase; component of the SSU; interacts with Bfr2p and Enp2p; high-copy number suppression of a U14 snoRNA processing mutant suggests an involvement in 18S rRNA synthesis 2 3 4 5
Name Description
Helicase CA 3
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.


Summary
HCA4/YJL033W is located on the left arm of chromosome X between geranylgeranyltransferase subunit BET4 and ER ATPase KAR2; coding sequence is 2313 nucleotides long with 15 synonymous and 4 nonsynonymous SNPs
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.


Summary
Hca4p is 770 amino acids long, low in abundance and slightly shorter-lived; phosphorylated on 9 residues
AlphaFold predicted structure of HCA4
EC Number
3.6.4.13
Length (a.a.)
770
Mol. Weight (Da)
87192.6
Isoelectric Point
7.47
Median Abundance (molecules/cell)
4854 +/- 1760
Half-life (hr)
7.2

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 HCA4 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
RNA helicase involved in rRNA processing; localizes to nucleolus and SSU processome

View computational annotations

Molecular Function

Manually Curated

Biological Process

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.


Summary
Essential gene in reference strain S288C; null mutant is hypersensitive to Calcofluor White and zymolyase treatment; reduction of function mutant displays decreased competitive fitness in minimal medium (relative fitness score: 0.987); heterozygous diploid displays decreased starvation resistance; overexpression causes increased filamentous growth in Sigma1278b and increased resistance to rapamycin
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.


Summary
Hca4p interacts physically with proteins involved in rRNA processing; HCA4 interacts genetically with genes involved in DNA repair

355 total interactions for 272 unique genes

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
HCA4/YJL033W transcription is positively regulated by Znf1p during D-xylose fermentation, and regulated by Nhp6Ap, Spt2p, and Spt6p in response to heat, by Sfp1p in response to stress, and by Fkh2p during maintenance of stationary phase in response to starvation.
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

All Curated Literature

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).


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Resources