CDC123 / YLR215C Overview


Standard Name
CDC123 1
Systematic Name
YLR215C
SGD ID
SGD:S000004205
Feature Type
ORF , Verified
Description
Assembly factor for the eIF2 translation initiation factor complex; regulates translational initiation; conserved residues of this ATP-Grasp protein that bind to ATP-Mg2+ in the pombe ortholog are required for complex assembly in budding yeast; interaction with eIF2 subunit Gcd11p facilitates complex assembly and activity; required for the START transition and timely progression through G2; regulated by nutrient availability; human ortholog complements the yeast mutant 1 2 3
Name Description
Cell Division Cycle 1
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
CDC123/YLR215C is located near the middle of the right arm of chromosome XII between ferric reductase FRE1 and cyclophilin CPR6; coding sequence is 1083 nucleotides long with 11 SNPs, 5 of which cause amino acid polymorphisms
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
Cdc123p is 360 amino acids long, low in abundance, shorter-lived; phosphorylated on 9 residues
AlphaFold predicted structure of CDC123
Length (a.a.)
360
Mol. Weight (Da)
41825.1
Isoelectric Point
4.39
Median Abundance (molecules/cell)
3142 +/- 1375
Half-life (hr)
8.8

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 CDC123 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
Cytoplasmic protein required for the assembly of translation initiation factor complex, eIF2; regulates translational initiation; proposed to bind ATP-Mg2+ base on structural similarity with the fission yeast ortholog

View computational annotations

Molecular Function

Manually Curated

Biological Process

Manually Curated

Cellular Component

High-Throughput
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
CDC123/YLR215C is an essential gene in reference strain S288C; base-substitution mutants have a G2 delay at permissive temperature, a G1 block at elevated temperatures, and are resistant to cycloheximide; reduced function mutants show decreased competitive fitness; overexpression confers 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
Cdc123p interacts physically with proteins involved in mitotic cell cycle and organelle organization; CDC123 interacts genetically with genes involved in mitotic cell cycle and cytoskeleton organization

235 total interactions for 199 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
CDC123/YLR215C transcription is regulated by Fkh2p, Ino4p, Reb1p, Spn1p, Spt6p, and Xbp1p in response to heat.
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: 2026-08-20

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).


Loading literature…

Resources