| Name | prohibitin 1 |
| Description | This gene is evolutionarily conserved, and its product is proposed to play a role in human cellular senescence and tumor suppression. Antiproliferative activity is reported to be localized to the 3' UTR, which is proposed to function as a trans-acting regulatory RNA. Several pseudogenes of this gene have been identified. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013] |
| Summary |
{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nProhibitin 1 (PHB1) is a multifunctional protein that exerts critical regulatory roles in the nucleus, where it modulates gene transcription, cell‐cycle progression, and tumor suppression. In several cancer models, PHB1 interacts directly with key transcription factors and tumor suppressors—including E2F family members, p53, and nuclear hormone receptors—to repress or activate target gene transcription, thereby controlling proliferation and apoptosis. In addition, PHB1 is subject to post‐transcriptional regulation via microRNAs (for example, miR‑27a in gastric and prostate cancers) and its activity can be modulated through interactions with chromatin remodeling complexes. Collectively, these nuclear functions position PHB1 as a central node in pathways governing cell growth and differentiation."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "15"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn the mitochondria, PHB1 functions as a chaperone and structural scaffold that is essential for maintaining mitochondrial integrity, regulating the organization and copy number of mitochondrial DNA, and modulating reactive oxygen species production. These roles are critical for cellular stress responses, as evidenced by PHB1’s ability to promote senescence, protect against oxidative injury in neurons and retinal pigment epithelial cells, and modulate autophagy and inflammatory signaling in the gastrointestinal tract. Through these mechanisms, PHB1 contributes to the preservation of mitochondrial function under both physiological and stress conditions."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "16", "end_ref": "25"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nAt the plasma membrane and in the cytosol, PHB1 is a versatile mediator of key signaling cascades and cellular responses. It is indispensable for Ras‐induced activation of the Raf–MEK–ERK pathway, thereby promoting cell migration and proliferation in oncogenic settings. PHB1 also functions as a cell-surface receptor or cofactor for viral proteins—playing roles in SARS‑CoV, chikungunya virus, HIV‑1, and EV71 infections—and its altered localization has been implicated in chemoresistance (e.g., to paclitaxel) and metastasis. Moreover, PHB1 modulates hormonal and metabolic signaling by repressing androgen receptor activity, regulating adipocyte differentiation through miRNA-mediated mechanisms, and interacting with signaling lipids such as PIP3 to influence insulin responses. These diverse extra-mitochondrial roles underscore its importance in inflammation, immune cell activation, and tumor progression in breast, prostate, ovarian, and liver cancers, and highlight its potential as a therapeutic target."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "26", "end_ref": "47"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Tao Liu, Hua Tang, Yuanyuan Lang, et al. 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"}, {"type": "b", "children": [{"type": "t", "text": "Japanese encephalitis virus induces human neural stem/progenitor cell death by elevating GRP78, PHB and hnRNPC through ER stress."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Cell Death Dis (2017)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1038/cddis.2016.394"}], "href": "https://doi.org/10.1038/cddis.2016.394"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "28102850"}], "href": "https://pubmed.ncbi.nlm.nih.gov/28102850"}]}]}]}
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| NCBI Gene ID | 5245 |
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| Predicted Functions |
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| Co-expressed Genes |
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| Expression in Tissues and Cell Lines |
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PHB1 has 2,989 functional associations with biological entities spanning 5 categories (chemical, functional term, phrase or reference, disease, phenotype or trait, cell line, cell type or tissue, gene, protein or microRNA) extracted from 33 datasets.
Click the + buttons to view associations for PHB1 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 PHB1 gene relative to other tissue samples from the Allen Brain Atlas Aging Dementia and Traumatic Brain Injury Tissue Sample Gene Expression Profiles dataset. | |
| Carcinogenome Chemical Perturbation Carcinogenicity Signatures | small molecule perturbations changing expression of PHB1 gene from the Carcinogenome Chemical Perturbation Carcinogenicity Signatures dataset. | |
| CM4AI KOLF21J CRISPRi Gene Perturbation Atlas | gene perturbations changing expression of PHB1 gene from the CM4AI KOLF21J CRISPRi Gene Perturbation Atlas dataset. | |
| COMPARTMENTS Curated Protein Localization Evidence Scores 2025 | cellular components containing PHB1 protein from the COMPARTMENTS Curated Protein Localization Evidence Scores 2025 dataset. | |
| COMPARTMENTS Experimental Protein Localization Evidence Scores 2025 | cellular components containing PHB1 protein in low- or high-throughput protein localization assays from the COMPARTMENTS Experimental Protein Localization Evidence Scores 2025 dataset. | |
| COMPARTMENTS Text-mining Protein Localization Evidence Scores 2025 | cellular components co-occuring with PHB1 protein in abstracts of biomedical publications from the COMPARTMENTS Text-mining Protein Localization Evidence Scores 2025 dataset. | |
| GO Biological Process Annotations 2025 | biological processes involving PHB1 gene from the curated GO Biological Process Annotations2025 dataset. | |
| GO Cellular Component Annotations 2025 | cellular components containing PHB1 protein from the curated GO Cellular Component Annotations 2025 dataset. | |
| GO Molecular Function Annotations 2025 | molecular functions performed by PHB1 gene from the curated GO Molecular Function Annotations 2025 dataset. | |
| GTEx Tissue Gene Expression Profiles 2023 | tissues with high or low expression of PHB1 gene relative to other tissues from the GTEx Tissue Gene Expression Profiles 2023 dataset. | |
| GTEx Tissue-Specific Aging Signatures | tissue samples with high or low expression of PHB1 gene relative to other tissue samples from the GTEx Tissue-Specific Aging Signatures dataset. | |
| GWAS Catalog SNP-Phenotype Associations 2025 | phenotypes associated with PHB1 gene in GWAS datasets from the GWAS Catalog SNP-Phenotype Associations 2025 dataset. | |
| HuBMAP Azimuth Cell Type Annotations | cell types associated with PHB1 gene from the HuBMAP Azimuth Cell Type Annotations dataset. | |
| JASPAR Predicted Human Transcription Factor Targets 2025 | transcription factors regulating expression of PHB1 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 PHB1 gene predicted using known transcription factor binding site motifs from the JASPAR Predicted Mouse Transcription Factor Targets 2025 dataset. | |
| KEGG Pathways 2026 | pathways involving PHB1 protein from the KEGG Pathways 2026 dataset. | |
| LINCS L1000 CMAP Chemical Perturbation Consensus Signatures | small molecule perturbations changing expression of PHB1 gene from the LINCS L1000 CMAP Chemical Perturbations Consensus Signatures dataset. | |
| MoTrPAC Rat Endurance Exercise Training | tissue samples with high or low expression of PHB1 gene relative to other tissue samples from the MoTrPAC Rat Endurance Exercise Training dataset. | |
| PFOCR Pathway Figure Associations 2024 | pathways involving PHB1 protein from the Wikipathways PFOCR 2024 dataset. | |
| Reactome Pathways 2024 | pathways involving PHB1 protein from the Reactome Pathways 2024 dataset. | |
| Replogle et al., Cell, 2022 K562 Essential Perturb-seq Gene Perturbation Signatures | gene perturbations changing expression of PHB1 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 PHB1 gene from the Replogle et al., Cell, 2022 K562 Genome-wide Perturb-seq Gene Perturbation Signatures dataset. | |
| Replogle et al., Cell, 2022 RPE1 Essential Perturb-seq Gene Perturbation Signatures | gene perturbations changing expression of PHB1 gene from the Replogle et al., Cell, 2022 RPE1 Essential Perturb-seq Gene Perturbation Signatures dataset. | |
| Rummagene Transcription Factor Associations 2026 | transcription factors regulating expression of PHB1 gene from the Rummagene Transcription Factor Associations 2026 dataset. | |
| RummaGEO Drug Perturbation Signatures | drug perturbations changing expression of PHB1 gene from the RummaGEO Drug Perturbation Signatures dataset. | |
| RummaGEO Gene Perturbation Signatures | gene perturbations changing expression of PHB1 gene from the RummaGEO Gene Perturbation Signatures dataset. | |
| Sci-Plex Drug Perturbation Signatures | drug perturbations changing expression of PHB1 gene from the Sci-Plex Drug Perturbation Signatures dataset. | |
| SynGO Synaptic Gene Annotations | synaptic terms associated with PHB1 gene from the SynGO Synaptic Gene Annotations dataset. | |
| Tahoe Therapeutics Tahoe 100M Perturbation Atlas | drug perturbations changing expression of PHB1 gene from the Tahoe Therapeutics Tahoe 100M Perturbation Atlas dataset. | |
| TISSUES Curated Tissue Protein Expression Evidence Scores 2025 | tissues with high expression of PHB1 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 PHB1 protein in proteomics datasets from the TISSUES Experimental Tissue Protein Expression Evidence Scores 2025 dataset. | |
| TISSUES Text-mining Tissue Protein Expression Evidence Scores 2025 | tissues co-occuring with PHB1 protein in abstracts of biomedical publications from the TISSUES Text-mining Tissue Protein Expression Evidence Scores 2025 dataset. | |
| WikiPathways Pathways 2024 | pathways involving PHB1 protein from the WikiPathways Pathways 2024 dataset. | |