SKA2 Gene

Name spindle and kinetochore associated complex subunit 2
Description Enables microtubule binding activity. Involved in attachment of mitotic spindle microtubules to kinetochore and regulation of microtubule polymerization or depolymerization. Located in spindle microtubule. Part of SKA complex. [provided by Alliance of Genome Resources, Mar 2025]
Summary
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Structural studies reveal that the Ska complex forms a distinctive, dimeric, coiled‐coil assembly with bipartite microtubule–binding domains, and its function is dynamically modulated by phosphorylation events and transcriptional control (including regulation via intronic miR‐301) as well as by glucocorticoid receptor interactions."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "5"}]}, {"type": "t", "text": "\n\n"}]}, {"type": "t", "text": "\n"}, {"type": "p", "children": [{"type": "t", "text": "\nBeyond its canonical mitotic role, aberrant regulation and epigenetic modification of SKA2 have been implicated in stress‐related and neuropsychiatric conditions. Multiple studies have demonstrated that increased DNA methylation and altered expression of SKA2 in blood and brain samples are associated with suicidal behavior, post‐traumatic stress disorder, and blunted cortisol reactivity. In these contexts, SKA2 epigenetic dysregulation—modulated by genetic polymorphisms and life‐threatening trauma—may serve as a promising biomarker linking hypothalamic–pituitary–adrenal axis dysfunction to psychiatric vulnerability and neuroinflammation."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "6", "end_ref": "15"}]}, {"type": "t", "text": "\n\n"}]}, {"type": "t", "text": "\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn addition, SKA2 plays a multifaceted role in tumorigenesis and other disease processes. Overexpression of SKA2—often in concert with its bidirectional partner PRR11 and under the regulatory influence of factors such as NF‐Y, p53, and CREB—has been linked to enhanced cell proliferation, migration, invasion, and metastatic potential across a range of malignancies including lung, breast, hepatocellular, and renal cancers. Moreover, non‐coding RNAs (for example, lncRNA SPRY4‐IT1) further modulate SKA2 expression to promote oncogenic signaling via pathways such as Wnt/β‐catenin. SKA2’s involvement also extends to other biological processes such as hematopoietic maturation, underscoring its broader significance as both a driver of disease progression and a potential therapeutic target."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "16", "end_ref": "27"}]}, {"type": "t", "text": "\n\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Anja Hanisch, Herman H W Silljé, Erich A Nigg "}, {"type": "b", "children": [{"type": "t", "text": "Timely anaphase onset requires a novel spindle and kinetochore complex comprising Ska1 and Ska2."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "EMBO J (2006)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1038/sj.emboj.7601426"}], "href": "https://doi.org/10.1038/sj.emboj.7601426"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "17093495"}], "href": "https://pubmed.ncbi.nlm.nih.gov/17093495"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Lisa Rice, Charlotte E Waters, Jennifer Eccles, et al. 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"}, {"type": "b", "children": [{"type": "t", "text": "Spindle and kinetochore-associated protein 2 facilitates the proliferation and invasion of hepatocellular carcinoma via the regulation of Wnt/β-catenin signaling."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Exp Cell Res (2020)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.yexcr.2020.112181"}], "href": "https://doi.org/10.1016/j.yexcr.2020.112181"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "32682011"}], "href": "https://pubmed.ncbi.nlm.nih.gov/32682011"}]}, {"type": "r", "ref": 27, "children": [{"type": "t", "text": "Carmel Kalla, Tanya Goltser-Dubner, Dalya Pevzner, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Resting mononuclear cell NR3C1 and SKA2 expression levels predict blunted cortisol reactivity to combat training stress among elite army cadets exposed to childhood adversity."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Mol Psychiatry (2021)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1038/s41380-021-01107-z"}], "href": "https://doi.org/10.1038/s41380-021-01107-z"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "33981010"}], "href": "https://pubmed.ncbi.nlm.nih.gov/33981010"}]}]}]}
Synonyms FAM33A
Proteins SKA2_HUMAN
NCBI Gene ID 348235
API
Download Associations
Predicted Functions View SKA2's ARCHS4 Predicted Functions.
Co-expressed Genes View SKA2's ARCHS4 Predicted Functions.
Expression in Tissues and Cell Lines View SKA2's ARCHS4 Predicted Functions.

Functional Associations

SKA2 has 6,596 functional associations with biological entities spanning 9 categories (molecular profile, organism, functional term, phrase or reference, disease, phenotype or trait, chemical, structural feature, cell line, cell type or tissue, gene, protein or microRNA, sequence feature) extracted from 101 datasets.

Click the + buttons to view associations for SKA2 from the datasets below.

If available, associations are ranked by standardized value

Dataset Summary
Achilles Cell Line Gene Essentiality Profiles cell lines with fitness changed by SKA2 gene knockdown relative to other cell lines from the Achilles Cell Line Gene Essentiality Profiles dataset.
Allen Brain Atlas Adult Human Brain Tissue Gene Expression Profiles tissues with high or low expression of SKA2 gene relative to other tissues from the Allen Brain Atlas Adult Human Brain Tissue Gene Expression Profiles dataset.
Allen Brain Atlas Adult Mouse Brain Tissue Gene Expression Profiles tissues with high or low expression of SKA2 gene relative to other tissues from the Allen Brain Atlas Adult Mouse Brain Tissue Gene Expression Profiles dataset.
Allen Brain Atlas Aging Dementia and Traumatic Brain Injury Tissue Sample Gene Expression Profiles tissue samples with high or low expression of SKA2 gene relative to other tissue samples from the Allen Brain Atlas Aging Dementia and Traumatic Brain Injury Tissue Sample Gene Expression Profiles dataset.
Allen Brain Atlas Developing Human Brain Tissue Gene Expression Profiles by Microarray tissue samples with high or low expression of SKA2 gene relative to other tissue samples from the Allen Brain Atlas Developing Human Brain Tissue Gene Expression Profiles by Microarray dataset.
Allen Brain Atlas Developing Human Brain Tissue Gene Expression Profiles by RNA-seq tissue samples with high or low expression of SKA2 gene relative to other tissue samples from the Allen Brain Atlas Developing Human Brain Tissue Gene Expression Profiles by RNA-seq dataset.
Allen Brain Atlas Prenatal Human Brain Tissue Gene Expression Profiles tissues with high or low expression of SKA2 gene relative to other tissues from the Allen Brain Atlas Prenatal Human Brain Tissue Gene Expression Profiles dataset.
BioGPS Human Cell Type and Tissue Gene Expression Profiles cell types and tissues with high or low expression of SKA2 gene relative to other cell types and tissues from the BioGPS Human Cell Type and Tissue Gene Expression Profiles dataset.
BioGPS Mouse Cell Type and Tissue Gene Expression Profiles cell types and tissues with high or low expression of SKA2 gene relative to other cell types and tissues from the BioGPS Mouse Cell Type and Tissue Gene Expression Profiles dataset.
CCLE Cell Line Gene CNV Profiles cell lines with high or low copy number of SKA2 gene relative to other cell lines from the CCLE Cell Line Gene CNV Profiles dataset.
CCLE Cell Line Gene Expression Profiles cell lines with high or low expression of SKA2 gene relative to other cell lines from the CCLE Cell Line Gene Expression Profiles dataset.
CCLE Cell Line Proteomics Cell lines associated with SKA2 protein from the CCLE Cell Line Proteomics dataset.
CellMarker Gene-Cell Type Associations cell types associated with SKA2 gene from the CellMarker Gene-Cell Type Associations dataset.
ChEA Transcription Factor Binding Site Profiles transcription factor binding site profiles with transcription factor binding evidence at the promoter of SKA2 gene from the CHEA Transcription Factor Binding Site Profiles dataset.
ChEA Transcription Factor Targets transcription factors binding the promoter of SKA2 gene in low- or high-throughput transcription factor functional studies from the CHEA Transcription Factor Targets dataset.
ChEA Transcription Factor Targets 2022 transcription factors binding the promoter of SKA2 gene in low- or high-throughput transcription factor functional studies from the CHEA Transcription Factor Targets 2022 dataset.
COMPARTMENTS Curated Protein Localization Evidence Scores cellular components containing SKA2 protein from the COMPARTMENTS Curated Protein Localization Evidence Scores dataset.
COMPARTMENTS Curated Protein Localization Evidence Scores 2025 cellular components containing SKA2 protein from the COMPARTMENTS Curated Protein Localization Evidence Scores 2025 dataset.
COMPARTMENTS Experimental Protein Localization Evidence Scores cellular components containing SKA2 protein in low- or high-throughput protein localization assays from the COMPARTMENTS Experimental Protein Localization Evidence Scores dataset.
COMPARTMENTS Text-mining Protein Localization Evidence Scores cellular components co-occuring with SKA2 protein in abstracts of biomedical publications from the COMPARTMENTS Text-mining Protein Localization Evidence Scores dataset.
COMPARTMENTS Text-mining Protein Localization Evidence Scores 2025 cellular components co-occuring with SKA2 protein in abstracts of biomedical publications from the COMPARTMENTS Text-mining Protein Localization Evidence Scores 2025 dataset.
COSMIC Cell Line Gene CNV Profiles cell lines with high or low copy number of SKA2 gene relative to other cell lines from the COSMIC Cell Line Gene CNV Profiles dataset.
COSMIC Cell Line Gene Mutation Profiles cell lines with SKA2 gene mutations from the COSMIC Cell Line Gene Mutation Profiles dataset.
CTD Gene-Disease Associations diseases associated with SKA2 gene/protein from the curated CTD Gene-Disease Associations dataset.
DeepCoverMOA Drug Mechanisms of Action small molecule perturbations with high or low expression of SKA2 protein relative to other small molecule perturbations from the DeepCoverMOA Drug Mechanisms of Action dataset.
DISEASES Text-mining Gene-Disease Association Evidence Scores diseases co-occuring with SKA2 gene in abstracts of biomedical publications from the DISEASES Text-mining Gene-Disease Assocation Evidence Scores dataset.
DISEASES Text-mining Gene-Disease Association Evidence Scores 2025 diseases co-occuring with SKA2 gene in abstracts of biomedical publications from the DISEASES Text-mining Gene-Disease Assocation Evidence Scores 2025 dataset.
DisGeNET Gene-Disease Associations diseases associated with SKA2 gene in GWAS and other genetic association datasets from the DisGeNET Gene-Disease Associations dataset.
DisGeNET Gene-Phenotype Associations phenotypes associated with SKA2 gene in GWAS and other genetic association datasets from the DisGeNET Gene-Phenoptype Associations dataset.
ENCODE Histone Modification Site Profiles histone modification site profiles with high histone modification abundance at SKA2 gene from the ENCODE Histone Modification Site Profiles dataset.
ENCODE Transcription Factor Binding Site Profiles transcription factor binding site profiles with transcription factor binding evidence at the promoter of SKA2 gene from the ENCODE Transcription Factor Binding Site Profiles dataset.
ENCODE Transcription Factor Targets transcription factors binding the promoter of SKA2 gene in ChIP-seq datasets from the ENCODE Transcription Factor Targets dataset.
ESCAPE Omics Signatures of Genes and Proteins for Stem Cells PubMedIDs of publications reporting gene signatures containing SKA2 from the ESCAPE Omics Signatures of Genes and Proteins for Stem Cells dataset.
GeneRIF Biological Term Annotations biological terms co-occuring with SKA2 gene in literature-supported statements describing functions of genes from the GeneRIF Biological Term Annotations dataset.
GeneSigDB Published Gene Signatures PubMedIDs of publications reporting gene signatures containing SKA2 from the GeneSigDB Published Gene Signatures dataset.
GEO Signatures of Differentially Expressed Genes for Diseases disease perturbations changing expression of SKA2 gene from the GEO Signatures of Differentially Expressed Genes for Diseases dataset.
GEO Signatures of Differentially Expressed Genes for Gene Perturbations gene perturbations changing expression of SKA2 gene from the GEO Signatures of Differentially Expressed Genes for Gene Perturbations dataset.
GEO Signatures of Differentially Expressed Genes for Kinase Perturbations kinase perturbations changing expression of SKA2 gene from the GEO Signatures of Differentially Expressed Genes for Kinase Perturbations dataset.
GEO Signatures of Differentially Expressed Genes for Small Molecules small molecule perturbations changing expression of SKA2 gene from the GEO Signatures of Differentially Expressed Genes for Small Molecules dataset.
GEO Signatures of Differentially Expressed Genes for Transcription Factor Perturbations transcription factor perturbations changing expression of SKA2 gene from the GEO Signatures of Differentially Expressed Genes for Transcription Factor Perturbations dataset.
GEO Signatures of Differentially Expressed Genes for Viral Infections virus perturbations changing expression of SKA2 gene from the GEO Signatures of Differentially Expressed Genes for Viral Infections dataset.
GO Biological Process Annotations 2015 biological processes involving SKA2 gene from the curated GO Biological Process Annotations 2015 dataset.
GO Biological Process Annotations 2023 biological processes involving SKA2 gene from the curated GO Biological Process Annotations 2023 dataset.
GO Biological Process Annotations 2025 biological processes involving SKA2 gene from the curated GO Biological Process Annotations2025 dataset.
GO Cellular Component Annotations 2015 cellular components containing SKA2 protein from the curated GO Cellular Component Annotations 2015 dataset.
GO Cellular Component Annotations 2023 cellular components containing SKA2 protein from the curated GO Cellular Component Annotations 2023 dataset.
GO Cellular Component Annotations 2025 cellular components containing SKA2 protein from the curated GO Cellular Component Annotations 2025 dataset.
GO Molecular Function Annotations 2015 molecular functions performed by SKA2 gene from the curated GO Molecular Function Annotations 2015 dataset.
GO Molecular Function Annotations 2023 molecular functions performed by SKA2 gene from the curated GO Molecular Function Annotations 2023 dataset.
GO Molecular Function Annotations 2025 molecular functions performed by SKA2 gene from the curated GO Molecular Function Annotations 2025 dataset.
GTEx eQTL 2025 SNPs regulating expression of SKA2 gene from the GTEx eQTL 2025 dataset.
GTEx Tissue Gene Expression Profiles tissues with high or low expression of SKA2 gene relative to other tissues from the GTEx Tissue Gene Expression Profiles dataset.
GTEx Tissue Gene Expression Profiles 2023 tissues with high or low expression of SKA2 gene relative to other tissues from the GTEx Tissue Gene Expression Profiles 2023 dataset.
GTEx Tissue Sample Gene Expression Profiles tissue samples with high or low expression of SKA2 gene relative to other tissue samples from the GTEx Tissue Sample Gene Expression Profiles dataset.
GWAS Catalog SNP-Phenotype Associations 2025 phenotypes associated with SKA2 gene in GWAS datasets from the GWAS Catalog SNP-Phenotype Associations 2025 dataset.
GWASdb SNP-Disease Associations diseases associated with SKA2 gene in GWAS and other genetic association datasets from the GWASdb SNP-Disease Associations dataset.
GWASdb SNP-Phenotype Associations phenotypes associated with SKA2 gene in GWAS datasets from the GWASdb SNP-Phenotype Associations dataset.
HPA Cell Line Gene Expression Profiles cell lines with high or low expression of SKA2 gene relative to other cell lines from the HPA Cell Line Gene Expression Profiles dataset.
HPA Tissue Gene Expression Profiles tissues with high or low expression of SKA2 gene relative to other tissues from the HPA Tissue Gene Expression Profiles dataset.
HPA Tissue Protein Expression Profiles tissues with high or low expression of SKA2 protein relative to other tissues from the HPA Tissue Protein Expression Profiles dataset.
HPA Tissue Sample Gene Expression Profiles tissue samples with high or low expression of SKA2 gene relative to other tissue samples from the HPA Tissue Sample Gene Expression Profiles dataset.
IMPC Knockout Mouse Phenotypes phenotypes of mice caused by SKA2 gene knockout from the IMPC Knockout Mouse Phenotypes dataset.
InterPro Predicted Protein Domain Annotations protein domains predicted for SKA2 protein from the InterPro Predicted Protein Domain Annotations dataset.
JASPAR Predicted Human Transcription Factor Targets 2025 transcription factors regulating expression of SKA2 gene predicted using known transcription factor binding site motifs from the JASPAR Predicted Human Transcription Factor Targets dataset.
JASPAR Predicted Mouse Transcription Factor Targets 2025 transcription factors regulating expression of SKA2 gene predicted using known transcription factor binding site motifs from the JASPAR Predicted Mouse Transcription Factor Targets 2025 dataset.
JASPAR Predicted Transcription Factor Targets transcription factors regulating expression of SKA2 gene predicted using known transcription factor binding site motifs from the JASPAR Predicted Transcription Factor Targets dataset.
Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles cell lines with high or low copy number of SKA2 gene relative to other cell lines from the Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles dataset.
Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene Expression Profiles cell lines with high or low expression of SKA2 gene relative to other cell lines from the Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene Expression Profiles dataset.
Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene Mutation Profiles cell lines with SKA2 gene mutations from the Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene Mutation Profiles dataset.
KnockTF Gene Expression Profiles with Transcription Factor Perturbations transcription factor perturbations changing expression of SKA2 gene from the KnockTF Gene Expression Profiles with Transcription Factor Perturbations dataset.
LOCATE Predicted Protein Localization Annotations cellular components predicted to contain SKA2 protein from the LOCATE Predicted Protein Localization Annotations dataset.
MGI Mouse Phenotype Associations 2023 phenotypes of transgenic mice caused by SKA2 gene mutations from the MGI Mouse Phenotype Associations 2023 dataset.
MiRTarBase microRNA Targets microRNAs targeting SKA2 gene in low- or high-throughput microRNA targeting studies from the MiRTarBase microRNA Targets dataset.
NIBR DRUG-seq U2OS MoA Box Gene Expression Profiles drug perturbations changing expression of SKA2 gene from the NIBR DRUG-seq U2OS MoA Box dataset.
NURSA Protein Complexes protein complexs containing SKA2 protein recovered by IP-MS from the NURSA Protein Complexes dataset.
Pathway Commons Protein-Protein Interactions interacting proteins for SKA2 from the Pathway Commons Protein-Protein Interactions dataset.
PerturbAtlas Signatures of Differentially Expressed Genes for Gene Perturbations gene perturbations changing expression of SKA2 gene from the PerturbAtlas Signatures of Differentially Expressed Genes for Gene Perturbations dataset.
PerturbAtlas Signatures of Differentially Expressed Genes for Mouse Gene Perturbations gene perturbations changing expression of SKA2 gene from the PerturbAtlas Signatures of Differentially Expressed Genes for Gene Perturbations dataset.
PFOCR Pathway Figure Associations 2023 pathways involving SKA2 protein from the PFOCR Pathway Figure Associations 2023 dataset.
PFOCR Pathway Figure Associations 2024 pathways involving SKA2 protein from the Wikipathways PFOCR 2024 dataset.
Reactome Pathways 2014 pathways involving SKA2 protein from the Reactome Pathways dataset.
Reactome Pathways 2024 pathways involving SKA2 protein from the Reactome Pathways 2024 dataset.
Replogle et al., Cell, 2022 K562 Essential Perturb-seq Gene Perturbation Signatures gene perturbations changing expression of SKA2 gene from the Replogle et al., Cell, 2022 K562 Essential Perturb-seq Gene Perturbation Signatures dataset.
Replogle et al., Cell, 2022 K562 Genome-wide Perturb-seq Gene Perturbation Signatures gene perturbations changing expression of SKA2 gene from the Replogle et al., Cell, 2022 K562 Genome-wide Perturb-seq Gene Perturbation Signatures dataset.
Roadmap Epigenomics Cell and Tissue DNA Methylation Profiles cell types and tissues with high or low DNA methylation of SKA2 gene relative to other cell types and tissues from the Roadmap Epigenomics Cell and Tissue DNA Methylation Profiles dataset.
Roadmap Epigenomics Cell and Tissue Gene Expression Profiles cell types and tissues with high or low expression of SKA2 gene relative to other cell types and tissues from the Roadmap Epigenomics Cell and Tissue Gene Expression Profiles dataset.
Roadmap Epigenomics Histone Modification Site Profiles histone modification site profiles with high histone modification abundance at SKA2 gene from the Roadmap Epigenomics Histone Modification Site Profiles dataset.
RummaGEO Drug Perturbation Signatures drug perturbations changing expression of SKA2 gene from the RummaGEO Drug Perturbation Signatures dataset.
RummaGEO Gene Perturbation Signatures gene perturbations changing expression of SKA2 gene from the RummaGEO Gene Perturbation Signatures dataset.
Sanger Dependency Map Cancer Cell Line Proteomics cell lines associated with SKA2 protein from the Sanger Dependency Map Cancer Cell Line Proteomics dataset.
Sci-Plex Drug Perturbation Signatures drug perturbations changing expression of SKA2 gene from the Sci-Plex Drug Perturbation Signatures dataset.
Tahoe Therapeutics Tahoe 100M Perturbation Atlas drug perturbations changing expression of SKA2 gene from the Tahoe Therapeutics Tahoe 100M Perturbation Atlas dataset.
TargetScan Predicted Conserved microRNA Targets microRNAs regulating expression of SKA2 gene predicted using conserved miRNA seed sequences from the TargetScan Predicted Conserved microRNA Targets dataset.
TargetScan Predicted Nonconserved microRNA Targets microRNAs regulating expression of SKA2 gene predicted using nonconserved miRNA seed sequences from the TargetScan Predicted Nonconserved microRNA Targets dataset.
TCGA Signatures of Differentially Expressed Genes for Tumors tissue samples with high or low expression of SKA2 gene relative to other tissue samples from the TCGA Signatures of Differentially Expressed Genes for Tumors dataset.
TISSUES Curated Tissue Protein Expression Evidence Scores tissues with high expression of SKA2 protein from the TISSUES Curated Tissue Protein Expression Evidence Scores dataset.
TISSUES Curated Tissue Protein Expression Evidence Scores 2025 tissues with high expression of SKA2 protein from the TISSUES Curated Tissue Protein Expression Evidence Scores 2025 dataset.
TISSUES Experimental Tissue Protein Expression Evidence Scores tissues with high expression of SKA2 protein in proteomics datasets from the TISSUES Experimental Tissue Protein Expression Evidence Scores dataset.
TISSUES Experimental Tissue Protein Expression Evidence Scores 2025 tissues with high expression of SKA2 protein in proteomics datasets from the TISSUES Experimental Tissue Protein Expression Evidence Scores 2025 dataset.
TISSUES Text-mining Tissue Protein Expression Evidence Scores tissues co-occuring with SKA2 protein in abstracts of biomedical publications from the TISSUES Text-mining Tissue Protein Expression Evidence Scores dataset.
TISSUES Text-mining Tissue Protein Expression Evidence Scores 2025 tissues co-occuring with SKA2 protein in abstracts of biomedical publications from the TISSUES Text-mining Tissue Protein Expression Evidence Scores 2025 dataset.