PRH2 Gene

Name proline-rich protein HaeIII subfamily 2
Description This gene encodes a member of the heterogeneous family of proline-rich salivary glycoproteins. The encoded preproprotein undergoes proteolytic processing to generate one or more mature isoforms before secretion from the parotid and submandibular/sublingual glands. In western population this locus is commonly biallelic and encodes proline-rich protein (PRP) isoforms, PRP-1 and PRP-2. The reference genome encodes the PRP-1 allele. Certain alleles of this gene are associated with susceptibility to dental caries. This gene is located in a cluster of closely related salivary proline-rich proteins on chromosome 12. [provided by RefSeq, Oct 2015]
Summary
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This critical “inside‐out” activation event initiates cell adhesion and is essential in diverse physiological settings such as development, immune cell trafficking, and platelet function."}, {"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": "\nOther studies emphasize how talin not only promotes integrin activation but also functions as a mechanosensor and force buffer. Under mechanical load, talin’s rod domains undergo force-induced unfolding and refolding transitions that expose cryptic binding sites for partners such as vinculin and RIAM. These dynamic structural changes provide a means to stably link integrins to the actin cytoskeleton, thereby reinforcing focal adhesions and coordinating downstream signaling events. The precise control of these processes—via force-dependent unfolding, lipid binding, and competition between autoinhibitory and activating interactions—ensures that cells can sense and respond to their extracellular environment."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "5", "end_ref": "13"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nAdditional research has delineated the context‐specific roles of talin in various cell types. In platelets, leukocytes, endothelial cells, and muscle cells, regulated recruitment and activation of talin are essential not only for integrin “inside‐out” activation but also for subsequent “outside‐in” signaling that drives cell spreading, migration, and tissue maintenance. Post‐translational modifications—including phosphorylation and calpain‐mediated proteolysis—as well as competitive binding by regulatory proteins like kindlin, RIAM, and vinculin, fine-tune talin’s activity and localization. These studies therefore underscore how precise control over talin’s conformation and its interactions with integrins and the actin cytoskeleton is critical for sustaining adhesion dynamics and mechanotransduction in both normal and pathological states."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "14", "end_ref": "29"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn summary, while PRH2 is not directly addressed in these abstracts, the extensive characterization of talin reveals that its ability to orchestrate integrin activation, mediate force-dependent adhesion reinforcement, and integrate diverse signaling inputs is critical for numerous cellular functions. By analogy, if PRH2 shares similarities in modular architecture or regulatory interactions with talin, it too might contribute to the fine regulation of adhesion dynamics and mechanotransduction. This integrated view—spanning from molecular interactions and force sensing to cell behavior and tissue homeostasis—provides an essential context for exploring the function of adhesion‐regulated proteins like PRH2 in both physiological and disease settings.\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Kate L Wegener, Anthony W Partridge, Jaewon Han, et al. 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"}, {"type": "b", "children": [{"type": "t", "text": "RIAM and vinculin binding to talin are mutually exclusive and regulate adhesion assembly and turnover."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Biol Chem (2013)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1074/jbc.M112.438119"}], "href": "https://doi.org/10.1074/jbc.M112.438119"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "23389036"}], "href": "https://pubmed.ncbi.nlm.nih.gov/23389036"}]}, {"type": "r", "ref": 13, "children": [{"type": "t", "text": "Merry Gunawan, Nandini Venkatesan, Jia Tong Loh, et al. 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"}, {"type": "b", "children": [{"type": "t", "text": "Clustering of alpha(5)beta(1) integrins determines adhesion strength whereas alpha(v)beta(3) and talin enable mechanotransduction."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Proc Natl Acad Sci U S A (2009)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1073/pnas.0902818106"}], "href": "https://doi.org/10.1073/pnas.0902818106"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "19805288"}], "href": "https://pubmed.ncbi.nlm.nih.gov/19805288"}]}, {"type": "r", "ref": 16, "children": [{"type": "t", "text": "Brian G Petrich, Patrizia Marchese, Zaverio M Ruggeri, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Talin is required for integrin-mediated platelet function in hemostasis and thrombosis."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Exp Med (2007)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1084/jem.20071800"}], "href": "https://doi.org/10.1084/jem.20071800"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "18086863"}], "href": "https://pubmed.ncbi.nlm.nih.gov/18086863"}]}, {"type": "r", "ref": 17, "children": [{"type": "t", "text": "Bernhard Nieswandt, Markus Moser, Irina Pleines, et al. 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Synonyms PRP-1/PRP-2, PR1/PR2, PIF-S, DB-S
NCBI Gene ID 5555
API
Download Associations
Predicted Functions View PRH2's ARCHS4 Predicted Functions.
Co-expressed Genes View PRH2's ARCHS4 Predicted Functions.
Expression in Tissues and Cell Lines View PRH2's ARCHS4 Predicted Functions.

Functional Associations

PRH2 has 3,077 functional associations with biological entities spanning 7 categories (molecular profile, functional term, phrase or reference, disease, phenotype or trait, chemical, cell line, cell type or tissue, gene, protein or microRNA, sequence feature) extracted from 58 datasets.

Click the + buttons to view associations for PRH2 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 PRH2 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 PRH2 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 PRH2 gene relative to other tissue samples from the Allen Brain Atlas Developing Human Brain Tissue Gene Expression Profiles by Microarray dataset.
Allen Brain Atlas Prenatal Human Brain Tissue Gene Expression Profiles tissues with high or low expression of PRH2 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 PRH2 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 PRH2 gene from the CHEA Transcription Factor Binding Site Profiles dataset.
ChEA Transcription Factor Targets transcription factors binding the promoter of PRH2 gene in low- or high-throughput transcription factor functional studies from the CHEA Transcription Factor Targets dataset.
CM4AI KOLF21J CRISPRi Gene Perturbation Atlas gene perturbations changing expression of PRH2 gene from the CM4AI KOLF21J CRISPRi Gene Perturbation Atlas dataset.
COMPARTMENTS Curated Protein Localization Evidence Scores cellular components containing PRH2 protein from the COMPARTMENTS Curated Protein Localization Evidence Scores dataset.
COMPARTMENTS Curated Protein Localization Evidence Scores 2025 cellular components containing PRH2 protein from the COMPARTMENTS Curated Protein Localization Evidence Scores 2025 dataset.
COMPARTMENTS Text-mining Protein Localization Evidence Scores cellular components co-occuring with PRH2 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 PRH2 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 PRH2 gene relative to other cell lines from the COSMIC Cell Line Gene CNV Profiles dataset.
COSMIC Cell Line Gene Mutation Profiles cell lines with PRH2 gene mutations from the COSMIC Cell Line Gene Mutation Profiles dataset.
DISEASES Text-mining Gene-Disease Association Evidence Scores diseases co-occuring with PRH2 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 PRH2 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 PRH2 gene in GWAS and other genetic association datasets from the DisGeNET Gene-Disease Associations dataset.
DisGeNET Gene-Phenotype Associations phenotypes associated with PRH2 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 PRH2 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 PRH2 gene from the ENCODE Transcription Factor Binding Site Profiles dataset.
ENCODE Transcription Factor Targets transcription factors binding the promoter of PRH2 gene in ChIP-seq datasets from the ENCODE Transcription Factor Targets dataset.
GeneSigDB Published Gene Signatures PubMedIDs of publications reporting gene signatures containing PRH2 from the GeneSigDB Published Gene Signatures dataset.
GEO Signatures of Differentially Expressed Genes for Gene Perturbations gene perturbations changing expression of PRH2 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 PRH2 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 PRH2 gene from the GEO Signatures of Differentially Expressed Genes for Small Molecules dataset.
GTEx eQTL 2025 SNPs regulating expression of PRH2 gene from the GTEx eQTL 2025 dataset.
GTEx Tissue Gene Expression Profiles tissues with high or low expression of PRH2 gene relative to other tissues from the GTEx Tissue Gene Expression Profiles dataset.
GTEx Tissue Sample Gene Expression Profiles tissue samples with high or low expression of PRH2 gene relative to other tissue samples from the GTEx Tissue Sample Gene Expression Profiles dataset.
HPA Cell Line Gene Expression Profiles cell lines with high or low expression of PRH2 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 PRH2 gene relative to other tissues from the HPA Tissue Gene Expression Profiles dataset.
HPA Tissue Sample Gene Expression Profiles tissue samples with high or low expression of PRH2 gene relative to other tissue samples from the HPA Tissue Sample Gene Expression Profiles dataset.
Hub Proteins Protein-Protein Interactions interacting hub proteins for PRH2 from the curated Hub Proteins Protein-Protein Interactions dataset.
JASPAR Predicted Human Transcription Factor Targets 2025 transcription factors regulating expression of PRH2 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 PRH2 gene predicted using known transcription factor binding site motifs from the JASPAR Predicted Transcription Factor Targets dataset.
KEA Substrates of Kinases kinases that phosphorylate PRH2 protein from the curated KEA Substrates of Kinases dataset.
KEGG Pathways 2026 pathways involving PRH2 protein from the KEGG Pathways 2026 dataset.
Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles cell lines with high or low copy number of PRH2 gene relative to other cell lines from the Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles dataset.
LOCATE Predicted Protein Localization Annotations cellular components predicted to contain PRH2 protein from the LOCATE Predicted Protein Localization Annotations dataset.
MiRTarBase microRNA Targets microRNAs targeting PRH2 gene in low- or high-throughput microRNA targeting studies from the MiRTarBase microRNA Targets dataset.
MSigDB Signatures of Differentially Expressed Genes for Cancer Gene Perturbations gene perturbations changing expression of PRH2 gene from the MSigDB Signatures of Differentially Expressed Genes for Cancer Gene Perturbations dataset.
NURSA Protein Complexes protein complexs containing PRH2 protein recovered by IP-MS from the NURSA Protein Complexes dataset.
Pathway Commons Protein-Protein Interactions interacting proteins for PRH2 from the Pathway Commons Protein-Protein Interactions dataset.
PFOCR Pathway Figure Associations 2023 pathways involving PRH2 protein from the PFOCR Pathway Figure Associations 2023 dataset.
PFOCR Pathway Figure Associations 2024 pathways involving PRH2 protein from the Wikipathways PFOCR 2024 dataset.
Phosphosite Textmining Biological Term Annotations biological terms co-occuring with PRH2 protein in abstracts of publications describing phosphosites from the Phosphosite Textmining Biological Term Annotations dataset.
Roadmap Epigenomics Cell and Tissue Gene Expression Profiles cell types and tissues with high or low expression of PRH2 gene relative to other cell types and tissues from the Roadmap Epigenomics Cell and Tissue Gene Expression Profiles dataset.
Rummagene Transcription Factor Associations 2026 transcription factors regulating expression of PRH2 gene from the Rummagene Transcription Factor Associations 2026 dataset.
RummaGEO Drug Perturbation Signatures drug perturbations changing expression of PRH2 gene from the RummaGEO Drug Perturbation Signatures dataset.
RummaGEO Gene Perturbation Signatures gene perturbations changing expression of PRH2 gene from the RummaGEO Gene Perturbation Signatures dataset.
TargetScan Predicted Conserved microRNA Targets microRNAs regulating expression of PRH2 gene predicted using conserved miRNA seed sequences from the TargetScan Predicted Conserved microRNA Targets dataset.
TargetScan Predicted Nonconserved microRNA Targets microRNAs regulating expression of PRH2 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 PRH2 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 PRH2 protein from the TISSUES Curated Tissue Protein Expression Evidence Scores dataset.
TISSUES Curated Tissue Protein Expression Evidence Scores 2025 tissues with high expression of PRH2 protein from the TISSUES Curated Tissue Protein Expression Evidence Scores 2025 dataset.
TISSUES Experimental Tissue Protein Expression Evidence Scores tissues with high expression of PRH2 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 PRH2 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 PRH2 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 PRH2 protein in abstracts of biomedical publications from the TISSUES Text-mining Tissue Protein Expression Evidence Scores 2025 dataset.