| Name | XK, Kell blood group complex subunit-related family, member 3 |
| Description | XKRX (MIM 300684) and XKR3 are homologs of the Kell blood group precursor XK (MIM 314850), which is a putative membrane transporter and a component of the XK/Kell complex of the Kell blood group system (Calenda et al., 2006 [PubMed 16431037]).[supplied by OMIM, Mar 2008] |
| Summary |
{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nMembers of the XK protein family—including the putative membrane transporter XKR3—are integral to the Kell blood group complex and are thought to play a role in maintaining normal red blood cell morphology and function. Studies have characterized the prototype XK protein, whose absence is linked to the McLeod phenotype marked by red cell acanthocytosis and neurological complications. Cloning efforts have of other homologous family members (such as XPLAC and XTES) have revealed that while these proteins share a similar overall topology and a conserved ced-8 domain, they differ in molecular size, genomic organization, and tissue‐specific expression (e.g., placenta, adrenal gland, or testis). Although the precise substrate and function of these transporters—including XKR3—remain to be fully elucidated, their evolutionary conservation suggests an important role in membrane transport and possibly phospholipid scrambling, with significant clinical implications when disrupted."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn parallel, advances in high‐throughput and multiparametric blood group genotyping have underscored the clinical significance of proteins associated with the Kell system. Modern automated assays, designed to evaluate single‐nucleotide polymorphisms linked to major blood group antigens, help ensure transfusion compatibility by accurately determining antigenic profiles. Although these genotyping studies do not directly assay XKR3, the integration of molecular data on Kell system components lends further indirect support to the importance of characterizing XK family proteins—including XKR3—to better understand their potential contribution to blood group antigen expression and transfusion medicine."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": ""}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Giulia Calenda, Jianbin Peng, Colvin M Redman, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Identification of two new members, XPLAC and XTES, of the XK family."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Gene (2006)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.gene.2005.10.037"}], "href": "https://doi.org/10.1016/j.gene.2005.10.037"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "16431037"}], "href": "https://pubmed.ncbi.nlm.nih.gov/16431037"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Gaelle C Le Goff, Jean-Charles Brès, Dominique Rigal, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Robust, high-throughput solution for blood group genotyping."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Anal Chem (2010)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1021/ac101008d"}], "href": "https://doi.org/10.1021/ac101008d"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "20560530"}], "href": "https://pubmed.ncbi.nlm.nih.gov/20560530"}]}]}]}
|
| Synonyms | XTES, XRG3 |
| Proteins | XKR3_HUMAN |
| NCBI Gene ID | 150165 |
| 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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XKR3 has 2,140 functional associations with biological entities spanning 8 categories (molecular profile, 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 54 datasets.
Click the + buttons to view associations for XKR3 from the datasets below.
If available, associations are ranked by standardized value
| Dataset | Summary | |
|---|---|---|
| Allen Brain Atlas Aging Dementia and Traumatic Brain Injury Tissue Sample Gene Expression Profiles | tissue samples with high or low expression of XKR3 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 XKR3 gene relative to other tissue samples from the Allen Brain Atlas Developing Human Brain Tissue Gene Expression Profiles by Microarray dataset. | |
| BioGPS Human Cell Type and Tissue Gene Expression Profiles | cell types and tissues with high or low expression of XKR3 gene relative to other cell types and tissues from the BioGPS Human Cell Type and Tissue Gene Expression Profiles dataset. | |
| CCLE Cell Line Gene CNV Profiles | cell lines with high or low copy number of XKR3 gene relative to other cell lines from the CCLE Cell Line Gene CNV Profiles dataset. | |
| ChEA Transcription Factor Binding Site Profiles | transcription factor binding site profiles with transcription factor binding evidence at the promoter of XKR3 gene from the CHEA Transcription Factor Binding Site Profiles dataset. | |
| ChEA Transcription Factor Targets | transcription factors binding the promoter of XKR3 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 XKR3 gene in low- or high-throughput transcription factor functional studies from the CHEA Transcription Factor Targets 2022 dataset. | |
| CM4AI KOLF21J CRISPRi Gene Perturbation Atlas | gene perturbations changing expression of XKR3 gene from the CM4AI KOLF21J CRISPRi Gene Perturbation Atlas dataset. | |
| COMPARTMENTS Curated Protein Localization Evidence Scores | cellular components containing XKR3 protein from the COMPARTMENTS Curated Protein Localization Evidence Scores dataset. | |
| COMPARTMENTS Text-mining Protein Localization Evidence Scores 2025 | cellular components co-occuring with XKR3 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 XKR3 gene relative to other cell lines from the COSMIC Cell Line Gene CNV Profiles dataset. | |
| COSMIC Cell Line Gene Mutation Profiles | cell lines with XKR3 gene mutations from the COSMIC Cell Line Gene Mutation Profiles dataset. | |
| DepMap CRISPR Gene Dependency | cell lines with fitness changed by XKR3 gene knockdown relative to other cell lines from the DepMap CRISPR Gene Dependency dataset. | |
| DISEASES Text-mining Gene-Disease Association Evidence Scores | diseases co-occuring with XKR3 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 XKR3 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 XKR3 gene in GWAS and other genetic association datasets from the DisGeNET Gene-Disease Associations dataset. | |
| ENCODE Histone Modification Site Profiles | histone modification site profiles with high histone modification abundance at XKR3 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 XKR3 gene from the ENCODE Transcription Factor Binding Site Profiles dataset. | |
| ENCODE Transcription Factor Targets | transcription factors binding the promoter of XKR3 gene in ChIP-seq datasets from the ENCODE Transcription Factor Targets dataset. | |
| GeneRIF Biological Term Annotations | biological terms co-occuring with XKR3 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 XKR3 from the GeneSigDB Published Gene Signatures dataset. | |
| GEO Signatures of Differentially Expressed Genes for Gene Perturbations | gene perturbations changing expression of XKR3 gene from the GEO Signatures of Differentially Expressed Genes for Gene Perturbations dataset. | |
| GEO Signatures of Differentially Expressed Genes for Small Molecules | small molecule perturbations changing expression of XKR3 gene from the GEO Signatures of Differentially Expressed Genes for Small Molecules dataset. | |
| GO Cellular Component Annotations 2015 | cellular components containing XKR3 protein from the curated GO Cellular Component Annotations 2015 dataset. | |
| GTEx eQTL 2025 | SNPs regulating expression of XKR3 gene from the GTEx eQTL 2025 dataset. | |
| GTEx Tissue Gene Expression Profiles | tissues with high or low expression of XKR3 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 XKR3 gene relative to other tissues from the GTEx Tissue Gene Expression Profiles 2023 dataset. | |
| GWAS Catalog SNP-Phenotype Associations 2025 | phenotypes associated with XKR3 gene in GWAS datasets from the GWAS Catalog SNP-Phenotype Associations 2025 dataset. | |
| GWASdb SNP-Disease Associations | diseases associated with XKR3 gene in GWAS and other genetic association datasets from the GWASdb SNP-Disease Associations dataset. | |
| GWASdb SNP-Phenotype Associations | phenotypes associated with XKR3 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 XKR3 gene relative to other cell lines from the Heiser et al., PNAS, 2011 Cell Line Gene Expression Profiles dataset. | |
| HPA Tissue Protein Expression Profiles | tissues with high or low expression of XKR3 protein relative to other tissues from the HPA Tissue Protein Expression Profiles dataset. | |
| InterPro Predicted Protein Domain Annotations | protein domains predicted for XKR3 protein from the InterPro Predicted Protein Domain Annotations dataset. | |
| JASPAR Predicted Human Transcription Factor Targets 2025 | transcription factors regulating expression of XKR3 gene predicted using known transcription factor binding site motifs from the JASPAR Predicted Human Transcription Factor Targets dataset. | |
| JASPAR Predicted Transcription Factor Targets | transcription factors regulating expression of XKR3 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 XKR3 gene relative to other cell lines from the Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles dataset. | |
| KnockTF Gene Expression Profiles with Transcription Factor Perturbations | transcription factor perturbations changing expression of XKR3 gene from the KnockTF Gene Expression Profiles with Transcription Factor Perturbations dataset. | |
| LOCATE Predicted Protein Localization Annotations | cellular components predicted to contain XKR3 protein from the LOCATE Predicted Protein Localization Annotations dataset. | |
| NIBR DRUG-seq U2OS MoA Box Gene Expression Profiles | drug perturbations changing expression of XKR3 gene from the NIBR DRUG-seq U2OS MoA Box dataset. | |
| PerturbAtlas Signatures of Differentially Expressed Genes for Gene Perturbations | gene perturbations changing expression of XKR3 gene from the PerturbAtlas Signatures of Differentially Expressed Genes for Gene Perturbations dataset. | |
| Replogle et al., Cell, 2022 K562 Essential Perturb-seq Gene Perturbation Signatures | gene perturbations changing expression of XKR3 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 XKR3 gene from the Replogle et al., Cell, 2022 K562 Genome-wide Perturb-seq Gene Perturbation Signatures dataset. | |
| Roadmap Epigenomics Histone Modification Site Profiles | histone modification site profiles with high histone modification abundance at XKR3 gene from the Roadmap Epigenomics Histone Modification Site Profiles dataset. | |
| Rummagene Transcription Factor Associations 2026 | transcription factors regulating expression of XKR3 gene from the Rummagene Transcription Factor Associations 2026 dataset. | |
| RummaGEO Drug Perturbation Signatures | drug perturbations changing expression of XKR3 gene from the RummaGEO Drug Perturbation Signatures dataset. | |
| RummaGEO Gene Perturbation Signatures | gene perturbations changing expression of XKR3 gene from the RummaGEO Gene Perturbation Signatures dataset. | |
| Sci-Plex Drug Perturbation Signatures | drug perturbations changing expression of XKR3 gene from the Sci-Plex Drug Perturbation Signatures dataset. | |
| TargetScan Predicted Nonconserved microRNA Targets | microRNAs regulating expression of XKR3 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 XKR3 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 XKR3 protein from the TISSUES Curated Tissue Protein Expression Evidence Scores dataset. | |
| TISSUES Curated Tissue Protein Expression Evidence Scores 2025 | tissues with high expression of XKR3 protein from the TISSUES Curated Tissue Protein Expression Evidence Scores 2025 dataset. | |
| TISSUES Experimental Tissue Protein Expression Evidence Scores 2025 | tissues with high expression of XKR3 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 XKR3 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 XKR3 protein in abstracts of biomedical publications from the TISSUES Text-mining Tissue Protein Expression Evidence Scores 2025 dataset. | |