| Name | stromal antigen 1 |
| Description | This gene is a member of the SCC3 family and is expressed in the nucleus. It encodes a component of cohesin, a multisubunit protein complex that provides sister chromatid cohesion along the length of a chromosome from DNA replication through prophase and prometaphase, after which it is dissociated in preparation for segregation during anaphase. [provided by RefSeq, Jul 2008] |
| Summary |
{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nSTAG1, also known as SA1, is a core subunit of the cohesin complex that ensures proper sister chromatid cohesion and contributes actively to genome organization. It interacts with key regulatory proteins, such as CTCF, to mediate insulator function and organize chromatin domains, as evidenced by its allele‐specific binding at imprinted gene loci and association with insulator elements (e.g., c‐myc) that are critical for gene regulation."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "4"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn its role within the cohesin complex, STAG1 contributes to the stabilization of chromosomal architecture through physical interactions with other subunits—such as RAD21, Smc1, and Smc3—and is important for the proper establishment and maintenance of telomere cohesion. Detailed mapping of SA-binding motifs in cohesin components has revealed that STAG1 helps mediate higher‐order cohesion and chromatin looping, a function that becomes particularly critical in cells harboring mutations in its paralog STAG2. In several cancer models, loss of STAG2 induces a synthetic lethal dependency on STAG1 by compromising sister chromatid cohesion and triggering mitotic failures, emphasizing STAG1’s indispensable role in maintaining genome integrity."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "5", "end_ref": "12"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nBeyond its fundamental role in chromosomal cohesion, STAG1 is also implicated in the regulation of transcription and cellular stress responses. Elevated expression of STAG1, for instance, has been linked to a p53-mediated apoptotic response under genotoxic stress, suggesting that it can function as a transcriptional target that modulates programmed cell death."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "13"}]}, {"type": "t", "text": " In parallel, genetic association studies have identified the STAG1 locus as being linked to metabolic traits, and differential expression analyses in various cancers (including acute myeloid leukemia and oral squamous cell carcinoma) underscore its clinical relevance."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "14", "end_ref": "19"}]}, {"type": "t", "text": " Comprehensive reviews further highlight the distinct roles of cohesin complexes containing STAG1 compared with those containing STAG2, particularly in the context of 3D genome organization, transcriptional regulation, and tumor suppression."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "20", "end_ref": "23"}]}, {"type": "t", "text": " Moreover, high-resolution studies have demonstrated that STAG1 enhances the residence time of cohesin at CTCF-bound sites, thereby reinforcing chromatin boundaries and facilitating proper gene expression programs."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "24"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Eric D Rubio, David J Reiss, Piri L Welcsh, et al. 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"}, {"type": "b", "children": [{"type": "t", "text": "Single-molecule imaging reveals a direct role of CTCF's zinc fingers in SA interaction and cluster-dependent RNA recruitment."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Nucleic Acids Res (2024)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1093/nar/gkae391"}], "href": "https://doi.org/10.1093/nar/gkae391"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "38742641"}], "href": "https://pubmed.ncbi.nlm.nih.gov/38742641"}]}]}]}
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| Synonyms | SA1, MRD47, SCC3A |
| Proteins | STAG1_HUMAN |
| NCBI Gene ID | 10274 |
| API | |
| Download Associations | |
| Predicted Functions |
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| Co-expressed Genes |
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| Expression in Tissues and Cell Lines |
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STAG1 has 6,495 functional associations with biological entities spanning 8 categories (molecular profile, organism, chemical, functional term, phrase or reference, disease, phenotype or trait, structural feature, cell line, cell type or tissue, gene, protein or microRNA) extracted from 102 datasets.
Click the + buttons to view associations for STAG1 from the datasets below.
If available, associations are ranked by standardized value
| Dataset | Summary | |
|---|---|---|
| Allen Brain Atlas Adult Human Brain Tissue Gene Expression Profiles | tissues with high or low expression of STAG1 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 STAG1 gene relative to other tissues from the Allen Brain Atlas Adult Mouse Brain Tissue Gene Expression Profiles dataset. | |
| Allen Brain Atlas Developing Human Brain Tissue Gene Expression Profiles by Microarray | tissue samples with high or low expression of STAG1 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 STAG1 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 STAG1 gene relative to other tissues from the Allen Brain Atlas Prenatal Human Brain Tissue Gene Expression Profiles dataset. | |
| BioGPS Cell Line Gene Expression Profiles | cell lines with high or low expression of STAG1 gene relative to other cell lines from the BioGPS Cell Line Gene Expression Profiles dataset. | |
| BioGPS Human Cell Type and Tissue Gene Expression Profiles | cell types and tissues with high or low expression of STAG1 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 STAG1 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 STAG1 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 STAG1 gene relative to other cell lines from the CCLE Cell Line Gene Expression Profiles dataset. | |
| CCLE Cell Line Proteomics | Cell lines associated with STAG1 protein from the CCLE Cell Line Proteomics dataset. | |
| ChEA Transcription Factor Binding Site Profiles | transcription factor binding site profiles with transcription factor binding evidence at the promoter of STAG1 gene from the CHEA Transcription Factor Binding Site Profiles dataset. | |
| ChEA Transcription Factor Targets | transcription factors binding the promoter of STAG1 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 STAG1 gene in low- or high-throughput transcription factor functional studies from the CHEA Transcription Factor Targets 2022 dataset. | |
| CMAP Signatures of Differentially Expressed Genes for Small Molecules | small molecule perturbations changing expression of STAG1 gene from the CMAP Signatures of Differentially Expressed Genes for Small Molecules dataset. | |
| COMPARTMENTS Curated Protein Localization Evidence Scores | cellular components containing STAG1 protein from the COMPARTMENTS Curated Protein Localization Evidence Scores dataset. | |
| COMPARTMENTS Experimental Protein Localization Evidence Scores | cellular components containing STAG1 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 STAG1 protein in abstracts of biomedical publications from the COMPARTMENTS Text-mining Protein Localization Evidence Scores dataset. | |
| CORUM Protein Complexes | protein complexs containing STAG1 protein from the CORUM Protein Complexes dataset. | |
| COSMIC Cell Line Gene CNV Profiles | cell lines with high or low copy number of STAG1 gene relative to other cell lines from the COSMIC Cell Line Gene CNV Profiles dataset. | |
| COSMIC Cell Line Gene Mutation Profiles | cell lines with STAG1 gene mutations from the COSMIC Cell Line Gene Mutation Profiles dataset. | |
| CTD Gene-Chemical Interactions | chemicals interacting with STAG1 gene/protein from the curated CTD Gene-Chemical Interactions dataset. | |
| CTD Gene-Disease Associations | diseases associated with STAG1 gene/protein from the curated CTD Gene-Disease Associations dataset. | |
| DeepCoverMOA Drug Mechanisms of Action | small molecule perturbations with high or low expression of STAG1 protein relative to other small molecule perturbations from the DeepCoverMOA Drug Mechanisms of Action dataset. | |
| DepMap CRISPR Gene Dependency | cell lines with fitness changed by STAG1 gene knockdown relative to other cell lines from the DepMap CRISPR Gene Dependency dataset. | |
| DISEASES Experimental Gene-Disease Association Evidence Scores 2025 | diseases associated with STAG1 gene in GWAS datasets from the DISEASES Experimental Gene-Disease Assocation Evidence Scores 2025 dataset. | |
| DISEASES Text-mining Gene-Disease Association Evidence Scores | diseases co-occuring with STAG1 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 STAG1 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 STAG1 gene in GWAS and other genetic association datasets from the DisGeNET Gene-Disease Associations dataset. | |
| DisGeNET Gene-Phenotype Associations | phenotypes associated with STAG1 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 STAG1 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 STAG1 gene from the ENCODE Transcription Factor Binding Site Profiles dataset. | |
| ENCODE Transcription Factor Targets | transcription factors binding the promoter of STAG1 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 STAG1 from the ESCAPE Omics Signatures of Genes and Proteins for Stem Cells dataset. | |
| GAD Gene-Disease Associations | diseases associated with STAG1 gene in GWAS and other genetic association datasets from the GAD Gene-Disease Associations dataset. | |
| GAD High Level Gene-Disease Associations | diseases associated with STAG1 gene in GWAS and other genetic association datasets from the GAD High Level Gene-Disease Associations dataset. | |
| GDSC Cell Line Gene Expression Profiles | cell lines with high or low expression of STAG1 gene relative to other cell lines from the GDSC Cell Line Gene Expression Profiles dataset. | |
| GeneRIF Biological Term Annotations | biological terms co-occuring with STAG1 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 STAG1 from the GeneSigDB Published Gene Signatures dataset. | |
| GEO Signatures of Differentially Expressed Genes for Diseases | disease perturbations changing expression of STAG1 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 STAG1 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 STAG1 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 STAG1 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 STAG1 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 STAG1 gene from the GEO Signatures of Differentially Expressed Genes for Viral Infections dataset. | |
| GO Biological Process Annotations 2015 | biological processes involving STAG1 gene from the curated GO Biological Process Annotations 2015 dataset. | |
| GO Biological Process Annotations 2023 | biological processes involving STAG1 gene from the curated GO Biological Process Annotations 2023 dataset. | |
| GO Cellular Component Annotations 2015 | cellular components containing STAG1 protein from the curated GO Cellular Component Annotations 2015 dataset. | |
| GO Cellular Component Annotations 2023 | cellular components containing STAG1 protein from the curated GO Cellular Component Annotations 2023 dataset. | |
| GO Molecular Function Annotations 2015 | molecular functions performed by STAG1 gene from the curated GO Molecular Function Annotations 2015 dataset. | |
| GTEx Tissue Gene Expression Profiles | tissues with high or low expression of STAG1 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 STAG1 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 STAG1 gene relative to other tissue samples from the GTEx Tissue Sample Gene Expression Profiles dataset. | |
| GTEx Tissue-Specific Aging Signatures | tissue samples with high or low expression of STAG1 gene relative to other tissue samples from the GTEx Tissue-Specific Aging Signatures dataset. | |
| GWAS Catalog SNP-Phenotype Associations | phenotypes associated with STAG1 gene in GWAS datasets from the GWAS Catalog SNP-Phenotype Associations dataset. | |
| GWASdb SNP-Disease Associations | diseases associated with STAG1 gene in GWAS and other genetic association datasets from the GWASdb SNP-Disease Associations dataset. | |
| GWASdb SNP-Phenotype Associations | phenotypes associated with STAG1 gene in GWAS datasets from the GWASdb SNP-Phenotype Associations dataset. | |
| Heiser et al., PNAS, 2011 Cell Line Gene Expression Profiles | cell lines with high or low expression of STAG1 gene relative to other cell lines from the Heiser et al., PNAS, 2011 Cell Line Gene Expression Profiles dataset. | |
| HPA Cell Line Gene Expression Profiles | cell lines with high or low expression of STAG1 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 STAG1 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 STAG1 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 STAG1 gene relative to other tissue samples from the HPA Tissue Sample Gene Expression Profiles dataset. | |
| Hub Proteins Protein-Protein Interactions | interacting hub proteins for STAG1 from the curated Hub Proteins Protein-Protein Interactions dataset. | |
| HuGE Navigator Gene-Phenotype Associations | phenotypes associated with STAG1 gene by text-mining GWAS publications from the HuGE Navigator Gene-Phenotype Associations dataset. | |
| IMPC Knockout Mouse Phenotypes | phenotypes of mice caused by STAG1 gene knockout from the IMPC Knockout Mouse Phenotypes dataset. | |
| InterPro Predicted Protein Domain Annotations | protein domains predicted for STAG1 protein from the InterPro Predicted Protein Domain Annotations dataset. | |
| JASPAR Predicted Transcription Factor Targets | transcription factors regulating expression of STAG1 gene predicted using known transcription factor binding site motifs from the JASPAR Predicted Transcription Factor Targets dataset. | |
| Kinase Library Serine Threonine Kinome Atlas | kinases that phosphorylate STAG1 protein from the Kinase Library Serine Threonine Atlas dataset. | |
| Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles | cell lines with high or low copy number of STAG1 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 STAG1 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 STAG1 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 STAG1 gene from the KnockTF Gene Expression Profiles with Transcription Factor Perturbations dataset. | |
| LINCS L1000 CMAP Chemical Perturbation Consensus Signatures | small molecule perturbations changing expression of STAG1 gene from the LINCS L1000 CMAP Chemical Perturbations Consensus Signatures dataset. | |
| LINCS L1000 CMAP CRISPR Knockout Consensus Signatures | gene perturbations changing expression of STAG1 gene from the LINCS L1000 CMAP CRISPR Knockout Consensus Signatures dataset. | |
| LINCS L1000 CMAP Signatures of Differentially Expressed Genes for Small Molecules | small molecule perturbations changing expression of STAG1 gene from the LINCS L1000 CMAP Signatures of Differentially Expressed Genes for Small Molecules dataset. | |
| LOCATE Curated Protein Localization Annotations | cellular components containing STAG1 protein in low- or high-throughput protein localization assays from the LOCATE Curated Protein Localization Annotations dataset. | |
| LOCATE Predicted Protein Localization Annotations | cellular components predicted to contain STAG1 protein from the LOCATE Predicted Protein Localization Annotations dataset. | |
| MGI Mouse Phenotype Associations 2023 | phenotypes of transgenic mice caused by STAG1 gene mutations from the MGI Mouse Phenotype Associations 2023 dataset. | |
| MiRTarBase microRNA Targets | microRNAs targeting STAG1 gene in low- or high-throughput microRNA targeting studies from the MiRTarBase microRNA Targets dataset. | |
| MotifMap Predicted Transcription Factor Targets | transcription factors regulating expression of STAG1 gene predicted using known transcription factor binding site motifs from the MotifMap Predicted Transcription Factor Targets dataset. | |
| MPO Gene-Phenotype Associations | phenotypes of transgenic mice caused by STAG1 gene mutations from the MPO Gene-Phenotype Associations dataset. | |
| MSigDB Cancer Gene Co-expression Modules | co-expressed genes for STAG1 from the MSigDB Cancer Gene Co-expression Modules dataset. | |
| MSigDB Signatures of Differentially Expressed Genes for Cancer Gene Perturbations | gene perturbations changing expression of STAG1 gene from the MSigDB Signatures of Differentially Expressed Genes for Cancer Gene Perturbations dataset. | |
| NURSA Protein Complexes | protein complexs containing STAG1 protein recovered by IP-MS from the NURSA Protein Complexes dataset. | |
| Pathway Commons Protein-Protein Interactions | interacting proteins for STAG1 from the Pathway Commons Protein-Protein Interactions dataset. | |
| PerturbAtlas Signatures of Differentially Expressed Genes for Gene Perturbations | gene perturbations changing expression of STAG1 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 STAG1 gene from the PerturbAtlas Signatures of Differentially Expressed Genes for Gene Perturbations dataset. | |
| PFOCR Pathway Figure Associations 2023 | pathways involving STAG1 protein from the PFOCR Pathway Figure Associations 2023 dataset. | |
| PFOCR Pathway Figure Associations 2024 | pathways involving STAG1 protein from the Wikipathways PFOCR 2024 dataset. | |
| Reactome Pathways 2014 | pathways involving STAG1 protein from the Reactome Pathways dataset. | |
| Reactome Pathways 2024 | pathways involving STAG1 protein from the Reactome Pathways 2024 dataset. | |
| Roadmap Epigenomics Cell and Tissue DNA Methylation Profiles | cell types and tissues with high or low DNA methylation of STAG1 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 STAG1 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 STAG1 gene from the Roadmap Epigenomics Histone Modification Site Profiles dataset. | |
| Sanger Dependency Map Cancer Cell Line Proteomics | cell lines associated with STAG1 protein from the Sanger Dependency Map Cancer Cell Line Proteomics dataset. | |
| TargetScan Predicted Conserved microRNA Targets | microRNAs regulating expression of STAG1 gene predicted using conserved miRNA seed sequences from the TargetScan Predicted Conserved microRNA Targets dataset. | |
| TargetScan Predicted Nonconserved microRNA Targets | microRNAs regulating expression of STAG1 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 STAG1 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 STAG1 protein from the TISSUES Curated Tissue Protein Expression Evidence Scores dataset. | |
| TISSUES Experimental Tissue Protein Expression Evidence Scores | tissues with high expression of STAG1 protein in proteomics datasets from the TISSUES Experimental Tissue Protein Expression Evidence Scores dataset. | |
| TISSUES Text-mining Tissue Protein Expression Evidence Scores | tissues co-occuring with STAG1 protein in abstracts of biomedical publications from the TISSUES Text-mining Tissue Protein Expression Evidence Scores dataset. | |
| WikiPathways Pathways 2024 | pathways involving STAG1 protein from the WikiPathways Pathways 2024 dataset. | |