| HGNC Family | Keratin associated proteins (KRTAP) |
| Name | keratin associated protein 9-8 |
| Description | This protein is a member of the keratin-associated protein (KAP) family. The KAP proteins form a matrix of keratin intermediate filaments which contribute to the structure of hair fibers. KAP family members appear to have unique, family-specific amino- and carboxyl-terminal regions and are subdivided into three multi-gene families according to amino acid composition: the high sulfur, the ultrahigh sulfur, and the high tyrosine/glycine KAPs. This protein is a member of the ultrahigh sulfur KAP family and the gene is localized to a cluster of KAPs at 17q12-q21. [provided by RefSeq, Jul 2008] |
| Summary |
{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\n Recent large‐scale multi‐omics studies have provided new insights into KRTAP9‑8, a member of the keratin‐associated protein family encoded on chromosome 17. Analyses of thousands of transcriptional signatures have revealed that KRTAP9‑8 is part of highly co‐regulated gene networks, supporting a role in specialized structural functions (1,4). Complementary in silico and semantic network approaches have integrated gene expression with genetic variation data, suggesting that KRTAP9‑8, along with other keratin‐associated proteins, may contribute to tissue-specific properties and could underlie, in part, genotypic differences observed between populations (2,4). Moreover, the targeted proteomics strategies used in organelle‐focused studies have confirmed the existence of previously “missing” proteins—including several keratin‐associated proteins—to form integral components of complexes involved in cellular integrity, supporting the view that KRTAP9‑8 is not only structurally important but may also participate in broader protein–protein interaction networks (3,4). Overall, the convergence of transcriptomic, proteomic, and semantic modeling data emphasizes KRTAP9‑8’s contribution to the structural and regulatory frameworks of specialized epithelial tissues."}]}, {"type": "t", "text": "\n "}, {"type": "p", "children": [{"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "4"}]}, {"type": "t", "text": ""}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Fabrice Lopez, Julien Textoris, Aurélie Bergon, et al. "}, {"type": "b", "children": [{"type": "t", "text": "TranscriptomeBrowser: a powerful and flexible toolbox to explore productively the transcriptional landscape of the Gene Expression Omnibus database."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "PLoS One (2008)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1371/journal.pone.0004001"}], "href": "https://doi.org/10.1371/journal.pone.0004001"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "19104654"}], "href": "https://pubmed.ncbi.nlm.nih.gov/19104654"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Hyoyoung Kim, Won Gi Yoo, Junhyung Park, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Semantic Modeling for SNPs Associated with Ethnic Disparities in HapMap Samples."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Genomics Inform (2014)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.5808/GI.2014.12.1.35"}], "href": "https://doi.org/10.5808/GI.2014.12.1.35"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "24748859"}], "href": "https://pubmed.ncbi.nlm.nih.gov/24748859"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Karsten Boldt, Jeroen van Reeuwijk, Qianhao Lu, et al. "}, {"type": "b", "children": [{"type": "t", "text": "An organelle-specific protein landscape identifies novel diseases and molecular mechanisms."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Nat Commun (2016)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1038/ncomms11491"}], "href": "https://doi.org/10.1038/ncomms11491"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "27173435"}], "href": "https://pubmed.ncbi.nlm.nih.gov/27173435"}]}, {"type": "r", "ref": 4, "children": [{"type": "t", "text": "Omer Siddiqui, Hongjiu Zhang, Yuanfang Guan, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Chromosome 17 Missing Proteins: Recent Progress and Future Directions as Part of the neXt-MP50 Challenge."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Proteome Res (2018)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1021/acs.jproteome.8b00442"}], "href": "https://doi.org/10.1021/acs.jproteome.8b00442"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "30280577"}], "href": "https://pubmed.ncbi.nlm.nih.gov/30280577"}]}]}]}
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| Synonyms | KAP9.8, KRTAP9.8 |
| Proteins | KRA98_HUMAN |
| NCBI Gene ID | 83901 |
| 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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KRTAP9-8 has 788 functional associations with biological entities spanning 8 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) extracted from 42 datasets.
Click the + buttons to view associations for KRTAP9-8 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 KRTAP9-8 gene relative to other tissues from the Allen Brain Atlas Adult Human 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 KRTAP9-8 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 Prenatal Human Brain Tissue Gene Expression Profiles | tissues with high or low expression of KRTAP9-8 gene relative to other tissues from the Allen Brain Atlas Prenatal Human Brain Tissue Gene Expression Profiles dataset. | |
| CCLE Cell Line Gene CNV Profiles | cell lines with high or low copy number of KRTAP9-8 gene relative to other cell lines from the CCLE Cell Line Gene CNV Profiles dataset. | |
| CM4AI KOLF21J CRISPRi Gene Perturbation Atlas | gene perturbations changing expression of KRTAP9-8 gene from the CM4AI KOLF21J CRISPRi Gene Perturbation Atlas dataset. | |
| COMPARTMENTS Curated Protein Localization Evidence Scores | cellular components containing KRTAP9-8 protein from the COMPARTMENTS Curated Protein Localization Evidence Scores dataset. | |
| COMPARTMENTS Text-mining Protein Localization Evidence Scores 2025 | cellular components co-occuring with KRTAP9-8 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 KRTAP9-8 gene relative to other cell lines from the COSMIC Cell Line Gene CNV Profiles dataset. | |
| COSMIC Cell Line Gene Mutation Profiles | cell lines with KRTAP9-8 gene mutations from the COSMIC Cell Line Gene Mutation Profiles dataset. | |
| DepMap CRISPR Gene Dependency | cell lines with fitness changed by KRTAP9-8 gene knockdown relative to other cell lines from the DepMap CRISPR Gene Dependency dataset. | |
| DISEASES Text-mining Gene-Disease Association Evidence Scores 2025 | diseases co-occuring with KRTAP9-8 gene in abstracts of biomedical publications from the DISEASES Text-mining Gene-Disease Assocation Evidence Scores 2025 dataset. | |
| ENCODE Histone Modification Site Profiles | histone modification site profiles with high histone modification abundance at KRTAP9-8 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 KRTAP9-8 gene from the ENCODE Transcription Factor Binding Site Profiles dataset. | |
| ENCODE Transcription Factor Targets | transcription factors binding the promoter of KRTAP9-8 gene in ChIP-seq datasets from the ENCODE Transcription Factor Targets dataset. | |
| GEO Signatures of Differentially Expressed Genes for Diseases | disease perturbations changing expression of KRTAP9-8 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 KRTAP9-8 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 KRTAP9-8 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 KRTAP9-8 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 KRTAP9-8 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 KRTAP9-8 gene from the GEO Signatures of Differentially Expressed Genes for Viral Infections dataset. | |
| GO Cellular Component Annotations 2015 | cellular components containing KRTAP9-8 protein from the curated GO Cellular Component Annotations 2015 dataset. | |
| GTEx Tissue Gene Expression Profiles | tissues with high or low expression of KRTAP9-8 gene relative to other tissues from the GTEx Tissue Gene Expression Profiles dataset. | |
| Heiser et al., PNAS, 2011 Cell Line Gene Expression Profiles | cell lines with high or low expression of KRTAP9-8 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 KRTAP9-8 protein relative to other tissues from the HPA Tissue Protein Expression Profiles dataset. | |
| InterPro Predicted Protein Domain Annotations | protein domains predicted for KRTAP9-8 protein from the InterPro Predicted Protein Domain Annotations dataset. | |
| JASPAR Predicted Human Transcription Factor Targets 2025 | transcription factors regulating expression of KRTAP9-8 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 KRTAP9-8 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 KRTAP9-8 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 KRTAP9-8 gene from the KnockTF Gene Expression Profiles with Transcription Factor Perturbations dataset. | |
| LOCATE Predicted Protein Localization Annotations | cellular components predicted to contain KRTAP9-8 protein from the LOCATE Predicted Protein Localization Annotations dataset. | |
| MiRTarBase microRNA Targets | microRNAs targeting KRTAP9-8 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 KRTAP9-8 gene predicted using known transcription factor binding site motifs from the MotifMap Predicted Transcription Factor Targets dataset. | |
| Reactome Pathways 2024 | pathways involving KRTAP9-8 protein from the Reactome Pathways 2024 dataset. | |
| Roadmap Epigenomics Histone Modification Site Profiles | histone modification site profiles with high histone modification abundance at KRTAP9-8 gene from the Roadmap Epigenomics Histone Modification Site Profiles dataset. | |
| Rummagene Transcription Factor Associations 2026 | transcription factors regulating expression of KRTAP9-8 gene from the Rummagene Transcription Factor Associations 2026 dataset. | |
| RummaGEO Drug Perturbation Signatures | drug perturbations changing expression of KRTAP9-8 gene from the RummaGEO Drug Perturbation Signatures dataset. | |
| RummaGEO Gene Perturbation Signatures | gene perturbations changing expression of KRTAP9-8 gene from the RummaGEO Gene Perturbation Signatures dataset. | |
| TargetScan Predicted Nonconserved microRNA Targets | microRNAs regulating expression of KRTAP9-8 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 KRTAP9-8 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 KRTAP9-8 protein from the TISSUES Curated Tissue Protein Expression Evidence Scores dataset. | |
| TISSUES Curated Tissue Protein Expression Evidence Scores 2025 | tissues with high expression of KRTAP9-8 protein from the TISSUES Curated Tissue Protein Expression Evidence Scores 2025 dataset. | |
| TISSUES Text-mining Tissue Protein Expression Evidence Scores 2025 | tissues co-occuring with KRTAP9-8 protein in abstracts of biomedical publications from the TISSUES Text-mining Tissue Protein Expression Evidence Scores 2025 dataset. | |