{"gene":"MRPL51","run_date":"2026-06-10T02:59:51","timeline":{"discoveries":[{"year":2010,"finding":"The C-terminal tail of human mitochondrial inner membrane protein Oxa1L (Oxa1L-CTT) physically cross-links to MRPL51 (as well as MRPL48 and MRPL49) on the mammalian mitochondrial large ribosomal subunit, consistent with a role for MRPL51 at the ribosome–membrane interface during co-translational insertion of mitochondria-synthesized proteins into the inner membrane.","method":"Chemical cross-linking of Oxa1L-CTT to mitochondrial ribosomes followed by identification of cross-linked partners; binding stoichiometry and affinity determined by thermodynamic analysis (Kd = 0.3–0.8 µM)","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct cross-linking experiment with biochemical characterization in a single lab; two orthogonal methods (cross-linking + thermodynamic binding assay), but no mutagenesis or structural validation of the MRPL51 interaction site","pmids":["20601428"],"is_preprint":false},{"year":2019,"finding":"Yeast MRPL51 (ortholog of human MRPL51) is required for mitochondrial DNA (mtDNA) stability; deletion of MRPL51 causes loss of mtDNA and loss of respiratory growth. The mechanism of mtDNA maintenance by Mrpl51 is Mhr1-dependent: Mrpl51 physically interacts with Mhr1, a protein that also regulates mtDNA repair.","method":"Reverse genetics (single-gene deletion by an alternative approach to avoid overlap effects), respiratory growth assays, mtDNA maintenance assays, physical interaction shown by co-immunoprecipitation/pulldown with Mhr1","journal":"FEMS yeast research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — clean single-gene deletion with defined phenotypic readout (mtDNA loss, respiratory growth) plus physical interaction data; single lab, yeast ortholog","pmids":["31374566"],"is_preprint":false},{"year":2019,"finding":"Yeast MRPL51 localizes to mitochondria, consistent with its role as a large-subunit mitochondrial ribosomal protein; its deletion abolishes mitochondrial fusion in addition to respiratory growth and mtDNA maintenance.","method":"Subcellular localization by fluorescence microscopy of tagged protein; phenotypic analysis of deletion strains","journal":"FEMS yeast research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct localization experiment with functional consequence (loss of mitochondrial fusion and respiratory growth upon deletion); single lab, yeast ortholog","pmids":["31374566"],"is_preprint":false},{"year":2020,"finding":"Knockdown of MRPL51 in SK-N-BE(2) neuronal cells increased cell viability and attenuated apoptosis induced by oxygen-glucose deprivation/reperfusion (OGDR), indicating that MRPL51 contributes to OGDR-induced cell death. OGDR also down-regulated endogenous MRPL51 protein expression.","method":"siRNA knockdown of MRPL51 followed by cell viability assay and apoptosis measurement after OGDR insult; western blot for protein expression","journal":"Journal of cellular and molecular medicine","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — loss-of-function (knockdown) with defined cellular phenotypic readout (viability, apoptosis) and protein expression measurement; single lab, two methods","pmids":["32618081"],"is_preprint":false},{"year":2023,"finding":"FOXM1 transcription factor binds to the MRPL51 gene promoter and activates its transcription in lung adenocarcinoma (LUAD) cells. MRPL51 knockdown in LUAD cells suppressed EMT (decreased N-cadherin and vimentin, increased E-cadherin), reduced cell proliferation, induced G1 phase arrest, and decreased cell invasion.","method":"Chromatin immunoprecipitation-qPCR (ChIP-qPCR) to show FOXM1 binding to MRPL51 promoter; dual-luciferase reporter assay for transcriptional activation; siRNA knockdown followed by western blotting, Transwell invasion assay, and cell cycle analysis","journal":"Oncology letters","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP-qPCR and luciferase assay establish FOXM1 as transcriptional activator; knockdown phenotype validated by multiple orthogonal assays (invasion, proliferation, cell cycle, EMT markers); single lab","pmids":["37323822"],"is_preprint":false}],"current_model":"MRPL51 is a large-subunit (39S) mitochondrial ribosomal protein that physically contacts the Oxa1L C-terminal tail at the ribosome–inner membrane interface, is required for mtDNA stability (via interaction with the Mhr1 repair factor) and respiratory growth in yeast, contributes to oxygen-glucose deprivation/reperfusion-induced apoptosis in neuronal cells, and is transcriptionally activated by FOXM1 to promote EMT, cell cycle progression, and invasion in lung adenocarcinoma cells."},"narrative":{"mechanistic_narrative":"MRPL51 is a large-subunit (39S) mitochondrial ribosomal protein that functions at the interface between the mitochondrial ribosome and the inner membrane during co-translational protein insertion [PMID:20601428]. The C-terminal tail of the inner membrane insertase Oxa1L cross-links directly to MRPL51 (alongside MRPL48 and MRPL49) on the mammalian large ribosomal subunit with micromolar affinity, positioning MRPL51 to couple mitochondrial translation to membrane insertion of newly synthesized respiratory chain subunits [PMID:20601428]. In yeast, the MRPL51 ortholog is required for mitochondrial DNA stability and respiratory growth, acting through a physical interaction with the mtDNA repair factor Mhr1; its deletion causes mtDNA loss and abolishes mitochondrial fusion [PMID:31374566]. Beyond its mitochondrial housekeeping role, MRPL51 contributes to oxygen-glucose deprivation/reperfusion-induced apoptosis in neuronal cells, where its knockdown improves viability [PMID:32618081], and it is a direct transcriptional target of FOXM1 in lung adenocarcinoma, where it promotes epithelial-mesenchymal transition, proliferation, and invasion [PMID:37323822].","teleology":[{"year":2010,"claim":"Whether MRPL51 occupies a defined position relative to the inner membrane insertion machinery was unknown; mapping its physical contact with Oxa1L established that it sits at the ribosome-membrane interface where nascent mitochondrial proteins are inserted.","evidence":"Chemical cross-linking of Oxa1L C-terminal tail to mammalian mitochondrial ribosomes plus thermodynamic binding analysis (Kd = 0.3-0.8 µM)","pmids":["20601428"],"confidence":"Medium","gaps":["No mutagenesis or structural validation of the MRPL51-Oxa1L contact site","Functional consequence of disrupting the interaction not tested","Whether MRPL51 is essential for co-translational insertion in vivo not addressed"]},{"year":2019,"claim":"It was unclear whether MRPL51 has roles beyond ribosome structure; deletion of the yeast ortholog revealed a requirement for mtDNA stability and respiratory growth, linked mechanistically to a physical interaction with the repair factor Mhr1.","evidence":"Single-gene deletion, respiratory growth and mtDNA maintenance assays, fluorescence localization, and co-immunoprecipitation with Mhr1 in yeast","pmids":["31374566"],"confidence":"Medium","gaps":["Single lab, yeast ortholog; human MRPL51 role in mtDNA maintenance not directly tested","Mechanism connecting ribosomal protein to mtDNA repair via Mhr1 not resolved","Whether loss of fusion is a direct effect or secondary to mtDNA loss unclear"]},{"year":2020,"claim":"The relevance of MRPL51 to cell death was unknown; knockdown in neuronal cells showed it contributes to ischemia-like injury, defining a pro-apoptotic role under oxygen-glucose deprivation/reperfusion.","evidence":"siRNA knockdown in SK-N-BE(2) cells with viability and apoptosis readouts and western blot after OGDR insult","pmids":["32618081"],"confidence":"Medium","gaps":["Molecular pathway linking MRPL51 to apoptosis not defined","Single cell line and single lab","Whether the effect requires mitochondrial translation function not tested"]},{"year":2023,"claim":"The transcriptional control and cancer relevance of MRPL51 were unknown; in lung adenocarcinoma it was shown to be a direct FOXM1 target driving EMT, proliferation, and invasion.","evidence":"ChIP-qPCR and dual-luciferase reporter for FOXM1 binding/activation, plus siRNA knockdown with EMT marker western blots, Transwell invasion, and cell cycle analysis in LUAD cells","pmids":["37323822"],"confidence":"Medium","gaps":["Mechanism by which a mitochondrial ribosomal protein promotes EMT and invasion not established","Single lab; no in vivo tumor model","Whether the oncogenic role depends on mitochondrial translation versus a moonlighting function unknown"]},{"year":null,"claim":"How MRPL51's core role as a mitochondrial ribosomal protein mechanistically connects to its disparate downstream phenotypes (mtDNA maintenance, apoptosis, EMT/invasion) remains unresolved.","evidence":"","pmids":[],"confidence":"Medium","gaps":["No structural model of MRPL51 within the human mitoribosome large subunit in the corpus","No unifying mechanism linking translation function to cancer or cell-death phenotypes","Direct substrates or translated targets dependent on MRPL51 not identified"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0005198","term_label":"structural molecule activity","supporting_discovery_ids":[0]}],"localization":[{"term_id":"GO:0005739","term_label":"mitochondrion","supporting_discovery_ids":[2]},{"term_id":"GO:0005840","term_label":"ribosome","supporting_discovery_ids":[0]}],"pathway":[{"term_id":"R-HSA-8953854","term_label":"Metabolism of RNA","supporting_discovery_ids":[0]},{"term_id":"R-HSA-392499","term_label":"Metabolism of proteins","supporting_discovery_ids":[0]}],"complexes":["mitochondrial large ribosomal subunit (39S)"],"partners":["OXA1L","MHR1"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"Q4U2R6","full_name":"Large ribosomal subunit protein mL51","aliases":["39S ribosomal protein L51, mitochondrial","L51mt","MRP-L51","bMRP-64","bMRP64"],"length_aa":128,"mass_kda":15.1,"function":"","subcellular_location":"Mitochondrion","url":"https://www.uniprot.org/uniprotkb/Q4U2R6/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/MRPL51","classification":"Not Classified","n_dependent_lines":426,"n_total_lines":1208,"dependency_fraction":0.3526490066225166},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[{"gene":"PSME3","stoichiometry":0.2}],"url":"https://opencell.sf.czbiohub.org/search/MRPL51","total_profiled":1310},"omim":[{"mim_id":"611855","title":"MITOCHONDRIAL RIBOSOMAL PROTEIN L51; MRPL51","url":"https://www.omim.org/entry/611855"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Supported","locations":[{"location":"Mitochondria","reliability":"Supported"},{"location":"Nucleoli","reliability":"Additional"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/MRPL51"},"hgnc":{"alias_symbol":["CDA09","HSPC241","bMRP64","mL51"],"prev_symbol":["MRP64"]},"alphafold":{"accession":"Q4U2R6","domains":[],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q4U2R6","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q4U2R6-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q4U2R6-F1-predicted_aligned_error_v6.png","plddt_mean":85.88},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=MRPL51","jax_strain_url":"https://www.jax.org/strain/search?query=MRPL51"},"sequence":{"accession":"Q4U2R6","fasta_url":"https://rest.uniprot.org/uniprotkb/Q4U2R6.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q4U2R6/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q4U2R6"}},"corpus_meta":[{"pmid":"30478411","id":"PMC_30478411","title":"Systematic Analysis and Biomarker Study for Alzheimer's Disease.","date":"2018","source":"Scientific reports","url":"https://pubmed.ncbi.nlm.nih.gov/30478411","citation_count":60,"is_preprint":false},{"pmid":"21072409","id":"PMC_21072409","title":"Systems biology of ovine intestinal parasite resistance: disease gene modules and biomarkers.","date":"2010","source":"Molecular bioSystems","url":"https://pubmed.ncbi.nlm.nih.gov/21072409","citation_count":50,"is_preprint":false},{"pmid":"20601428","id":"PMC_20601428","title":"Properties of the C-terminal tail of human mitochondrial inner membrane protein Oxa1L and its interactions with mammalian mitochondrial ribosomes.","date":"2010","source":"The Journal of biological chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/20601428","citation_count":41,"is_preprint":false},{"pmid":"32576585","id":"PMC_32576585","title":"Microarray-based Analysis of Genes, Transcription Factors, and Epigenetic Modifications in Lung Cancer Exposed to Nitric Oxide.","date":"2020","source":"Cancer genomics & proteomics","url":"https://pubmed.ncbi.nlm.nih.gov/32576585","citation_count":19,"is_preprint":false},{"pmid":"32618081","id":"PMC_32618081","title":"CRISPR/Cas9-mediated whole genomic wide knockout screening identifies mitochondrial ribosomal proteins involving in oxygen-glucose deprivation/reperfusion resistance.","date":"2020","source":"Journal of cellular and molecular medicine","url":"https://pubmed.ncbi.nlm.nih.gov/32618081","citation_count":9,"is_preprint":false},{"pmid":"21730110","id":"PMC_21730110","title":"Altered expression of Armet and Mrlp51 in the oocyte, preimplantation embryo, and brain of mice following oocyte in vitro maturation but postnatal brain development and cognitive function are normal.","date":"2011","source":"Reproduction (Cambridge, England)","url":"https://pubmed.ncbi.nlm.nih.gov/21730110","citation_count":9,"is_preprint":false},{"pmid":"36067173","id":"PMC_36067173","title":"Aberrant mitochondrial homeostasis at the crossroad of musculoskeletal ageing and non-small cell lung cancer.","date":"2022","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/36067173","citation_count":9,"is_preprint":false},{"pmid":"37323822","id":"PMC_37323822","title":"MRPL51 is a downstream target of FOXM1 in promoting the malignant behaviors of lung adenocarcinoma.","date":"2023","source":"Oncology letters","url":"https://pubmed.ncbi.nlm.nih.gov/37323822","citation_count":8,"is_preprint":false},{"pmid":"31374566","id":"PMC_31374566","title":"Reverse genetic analysis of yeast YPR099C/MRPL51 reveals a critical role of both overlapping ORFs in respiratory growth and MRPL51 in mitochondrial DNA maintenance.","date":"2019","source":"FEMS yeast research","url":"https://pubmed.ncbi.nlm.nih.gov/31374566","citation_count":4,"is_preprint":false},{"pmid":"39538254","id":"PMC_39538254","title":"MicroRNAome profiling of breast cancer unveils hsa-miR-5683 as a tumor suppressor microRNA predicting favorable clinical outcome.","date":"2024","source":"Cancer cell international","url":"https://pubmed.ncbi.nlm.nih.gov/39538254","citation_count":4,"is_preprint":false}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":7879,"output_tokens":1466,"usd":0.022814,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":8262,"output_tokens":2182,"usd":0.04793,"stage2_stop_reason":"end_turn"},"total_usd":0.070744,"stage1_batch_id":"msgbatch_01BbTCMyrRPyhtEq6b1MdwCN","stage2_batch_id":"msgbatch_011dEed5bbxYvTAaQWKJevxu","note":"batch pricing = 50% of standard"},"stage1_raw":"```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 2010,\n      \"finding\": \"The C-terminal tail of human mitochondrial inner membrane protein Oxa1L (Oxa1L-CTT) physically cross-links to MRPL51 (as well as MRPL48 and MRPL49) on the mammalian mitochondrial large ribosomal subunit, consistent with a role for MRPL51 at the ribosome–membrane interface during co-translational insertion of mitochondria-synthesized proteins into the inner membrane.\",\n      \"method\": \"Chemical cross-linking of Oxa1L-CTT to mitochondrial ribosomes followed by identification of cross-linked partners; binding stoichiometry and affinity determined by thermodynamic analysis (Kd = 0.3–0.8 µM)\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct cross-linking experiment with biochemical characterization in a single lab; two orthogonal methods (cross-linking + thermodynamic binding assay), but no mutagenesis or structural validation of the MRPL51 interaction site\",\n      \"pmids\": [\"20601428\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"Yeast MRPL51 (ortholog of human MRPL51) is required for mitochondrial DNA (mtDNA) stability; deletion of MRPL51 causes loss of mtDNA and loss of respiratory growth. The mechanism of mtDNA maintenance by Mrpl51 is Mhr1-dependent: Mrpl51 physically interacts with Mhr1, a protein that also regulates mtDNA repair.\",\n      \"method\": \"Reverse genetics (single-gene deletion by an alternative approach to avoid overlap effects), respiratory growth assays, mtDNA maintenance assays, physical interaction shown by co-immunoprecipitation/pulldown with Mhr1\",\n      \"journal\": \"FEMS yeast research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — clean single-gene deletion with defined phenotypic readout (mtDNA loss, respiratory growth) plus physical interaction data; single lab, yeast ortholog\",\n      \"pmids\": [\"31374566\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"Yeast MRPL51 localizes to mitochondria, consistent with its role as a large-subunit mitochondrial ribosomal protein; its deletion abolishes mitochondrial fusion in addition to respiratory growth and mtDNA maintenance.\",\n      \"method\": \"Subcellular localization by fluorescence microscopy of tagged protein; phenotypic analysis of deletion strains\",\n      \"journal\": \"FEMS yeast research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct localization experiment with functional consequence (loss of mitochondrial fusion and respiratory growth upon deletion); single lab, yeast ortholog\",\n      \"pmids\": [\"31374566\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"Knockdown of MRPL51 in SK-N-BE(2) neuronal cells increased cell viability and attenuated apoptosis induced by oxygen-glucose deprivation/reperfusion (OGDR), indicating that MRPL51 contributes to OGDR-induced cell death. OGDR also down-regulated endogenous MRPL51 protein expression.\",\n      \"method\": \"siRNA knockdown of MRPL51 followed by cell viability assay and apoptosis measurement after OGDR insult; western blot for protein expression\",\n      \"journal\": \"Journal of cellular and molecular medicine\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — loss-of-function (knockdown) with defined cellular phenotypic readout (viability, apoptosis) and protein expression measurement; single lab, two methods\",\n      \"pmids\": [\"32618081\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"FOXM1 transcription factor binds to the MRPL51 gene promoter and activates its transcription in lung adenocarcinoma (LUAD) cells. MRPL51 knockdown in LUAD cells suppressed EMT (decreased N-cadherin and vimentin, increased E-cadherin), reduced cell proliferation, induced G1 phase arrest, and decreased cell invasion.\",\n      \"method\": \"Chromatin immunoprecipitation-qPCR (ChIP-qPCR) to show FOXM1 binding to MRPL51 promoter; dual-luciferase reporter assay for transcriptional activation; siRNA knockdown followed by western blotting, Transwell invasion assay, and cell cycle analysis\",\n      \"journal\": \"Oncology letters\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP-qPCR and luciferase assay establish FOXM1 as transcriptional activator; knockdown phenotype validated by multiple orthogonal assays (invasion, proliferation, cell cycle, EMT markers); single lab\",\n      \"pmids\": [\"37323822\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"MRPL51 is a large-subunit (39S) mitochondrial ribosomal protein that physically contacts the Oxa1L C-terminal tail at the ribosome–inner membrane interface, is required for mtDNA stability (via interaction with the Mhr1 repair factor) and respiratory growth in yeast, contributes to oxygen-glucose deprivation/reperfusion-induced apoptosis in neuronal cells, and is transcriptionally activated by FOXM1 to promote EMT, cell cycle progression, and invasion in lung adenocarcinoma cells.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"MRPL51 is a large-subunit (39S) mitochondrial ribosomal protein that functions at the interface between the mitochondrial ribosome and the inner membrane during co-translational protein insertion [#0]. The C-terminal tail of the inner membrane insertase Oxa1L cross-links directly to MRPL51 (alongside MRPL48 and MRPL49) on the mammalian large ribosomal subunit with micromolar affinity, positioning MRPL51 to couple mitochondrial translation to membrane insertion of newly synthesized respiratory chain subunits [#0]. In yeast, the MRPL51 ortholog is required for mitochondrial DNA stability and respiratory growth, acting through a physical interaction with the mtDNA repair factor Mhr1; its deletion causes mtDNA loss and abolishes mitochondrial fusion [#1, #2]. Beyond its mitochondrial housekeeping role, MRPL51 contributes to oxygen-glucose deprivation/reperfusion-induced apoptosis in neuronal cells, where its knockdown improves viability [#3], and it is a direct transcriptional target of FOXM1 in lung adenocarcinoma, where it promotes epithelial-mesenchymal transition, proliferation, and invasion [#4].\",\n  \"teleology\": [\n    {\n      \"year\": 2010,\n      \"claim\": \"Whether MRPL51 occupies a defined position relative to the inner membrane insertion machinery was unknown; mapping its physical contact with Oxa1L established that it sits at the ribosome-membrane interface where nascent mitochondrial proteins are inserted.\",\n      \"evidence\": \"Chemical cross-linking of Oxa1L C-terminal tail to mammalian mitochondrial ribosomes plus thermodynamic binding analysis (Kd = 0.3-0.8 µM)\",\n      \"pmids\": [\"20601428\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"No mutagenesis or structural validation of the MRPL51-Oxa1L contact site\",\n        \"Functional consequence of disrupting the interaction not tested\",\n        \"Whether MRPL51 is essential for co-translational insertion in vivo not addressed\"\n      ]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"It was unclear whether MRPL51 has roles beyond ribosome structure; deletion of the yeast ortholog revealed a requirement for mtDNA stability and respiratory growth, linked mechanistically to a physical interaction with the repair factor Mhr1.\",\n      \"evidence\": \"Single-gene deletion, respiratory growth and mtDNA maintenance assays, fluorescence localization, and co-immunoprecipitation with Mhr1 in yeast\",\n      \"pmids\": [\"31374566\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Single lab, yeast ortholog; human MRPL51 role in mtDNA maintenance not directly tested\",\n        \"Mechanism connecting ribosomal protein to mtDNA repair via Mhr1 not resolved\",\n        \"Whether loss of fusion is a direct effect or secondary to mtDNA loss unclear\"\n      ]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"The relevance of MRPL51 to cell death was unknown; knockdown in neuronal cells showed it contributes to ischemia-like injury, defining a pro-apoptotic role under oxygen-glucose deprivation/reperfusion.\",\n      \"evidence\": \"siRNA knockdown in SK-N-BE(2) cells with viability and apoptosis readouts and western blot after OGDR insult\",\n      \"pmids\": [\"32618081\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Molecular pathway linking MRPL51 to apoptosis not defined\",\n        \"Single cell line and single lab\",\n        \"Whether the effect requires mitochondrial translation function not tested\"\n      ]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"The transcriptional control and cancer relevance of MRPL51 were unknown; in lung adenocarcinoma it was shown to be a direct FOXM1 target driving EMT, proliferation, and invasion.\",\n      \"evidence\": \"ChIP-qPCR and dual-luciferase reporter for FOXM1 binding/activation, plus siRNA knockdown with EMT marker western blots, Transwell invasion, and cell cycle analysis in LUAD cells\",\n      \"pmids\": [\"37323822\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Mechanism by which a mitochondrial ribosomal protein promotes EMT and invasion not established\",\n        \"Single lab; no in vivo tumor model\",\n        \"Whether the oncogenic role depends on mitochondrial translation versus a moonlighting function unknown\"\n      ]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How MRPL51's core role as a mitochondrial ribosomal protein mechanistically connects to its disparate downstream phenotypes (mtDNA maintenance, apoptosis, EMT/invasion) remains unresolved.\",\n      \"evidence\": null,\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"No structural model of MRPL51 within the human mitoribosome large subunit in the corpus\",\n        \"No unifying mechanism linking translation function to cancer or cell-death phenotypes\",\n        \"Direct substrates or translated targets dependent on MRPL51 not identified\"\n      ]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0005198\", \"supporting_discovery_ids\": [0]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005739\", \"supporting_discovery_ids\": [2]},\n      {\"term_id\": \"GO:0005840\", \"supporting_discovery_ids\": [0]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-8953854\", \"supporting_discovery_ids\": [0]},\n      {\"term_id\": \"R-HSA-392499\", \"supporting_discovery_ids\": [0]}\n    ],\n    \"complexes\": [\"mitochondrial large ribosomal subunit (39S)\"],\n    \"partners\": [\"OXA1L\", \"MHR1\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"faith_supported":4,"faith_total":4,"faith_pct":100.0}}