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10 sources retrieved · Most recent: April 2026 · Index updated 14 days ago
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MRRF
mitochondrial ribosome recycling factor
Chromosome 9 · 9q33.2
NCBI Gene: 92399Ensembl: ENSG00000148187.19HGNC: HGNC:7234UniProt: Q96E11
40PubMed Papers
20Diseases
0Drugs
0Pathogenic Variants
FUNCTIONAL ROLE
Hub Gene
DATA QUALITY
✓ Experimental GO Evidence✓ Swiss-Prot Reviewed
ribosome disassemblyprotein bindingmitochondrionribosomal large subunit bindingneurodegenerative diseaseocular hypotensiondeficiency anemiamyoepithelial tumor
✦AI Summary

MRRF (mitochondrial ribosome recycling factor) is a mitochondrial protein responsible for disassembling ribosomes from messenger RNA at the termination of mitochondrial protein biosynthesis 1. The protein functions collaboratively with GFM2 to promote mitochondrial ribosome recycling by dissolving intersubunit contacts between ribosomal subunits 2. This recycling process is essential for completing the translational cycle and releasing ribosomal components for subsequent rounds of protein synthesis. MRRF operates within the mitochondrial matrix and exhibits protein-binding capacity, binding to ribosomal large subunits during the disassembly process 2. The gene exhibits time-dependent expression patterns in response to cellular signals, as demonstrated in LPA-treated human fibroblasts where MRRF expression showed a characteristic up-and-down profile 3. While insufficient information is provided regarding direct disease associations or clinical significance in the available abstracts, the critical role of MRRF in terminating mitochondrial translation suggests its dysfunction could potentially impair mitochondrial protein synthesis and cellular energy metabolism.

Sources cited
1
MRRF is responsible for disassembly of ribosomes from mRNA at termination of mitochondrial protein biosynthesis
PMID: 19716793
2
MRRF acts in collaboration with GFM2 and promotes mitochondrial ribosome recycling by dissolution of intersubunit contacts
PMID: 33878294
3
MRRF gene expression shows time-dependent up-and-down profile in response to LPA treatment in human diploid fibroblasts
PMID: 19563823
⚠Limited data available — This gene has 3 indexed publications. Summary and analysis may be incomplete.
Disease Associationsⓘ20
neurodegenerative diseaseOpen Targets
0.42Moderate
ocular hypotensionOpen Targets
0.28Weak
deficiency anemiaOpen Targets
0.18Weak
myoepithelial tumorOpen Targets
0.11Weak
lysosomal lipid storage disorderOpen Targets
0.04Suggestive
squamous cell lung carcinomaOpen Targets
0.03Suggestive
alcohol drinkingOpen Targets
0.03Suggestive
intelligenceOpen Targets
0.03Suggestive
mathematical abilityOpen Targets
0.03Suggestive
hypopituitarismOpen Targets
0.02Suggestive
schizophreniaOpen Targets
0.02Suggestive
pyridoxine-dependent epilepsy caused by ALDH7A1 mutantOpen Targets
0.01Suggestive
SepsisOpen Targets
0.01Suggestive
Lyme diseaseOpen Targets
0.01Suggestive
infectionOpen Targets
0.01Suggestive
neoplasmOpen Targets
0.00Suggestive
strokeOpen Targets
0.00Suggestive
Parkinson diseaseOpen Targets
0.00Suggestive
cancerOpen Targets
0.00Suggestive
psychiatric disorderOpen Targets
0.00Suggestive
Pathogenic Variants
No pathogenic variants reported on ClinVar for this gene.
View on ClinVar ↗
Related Genes
MRPL36Protein interaction100%MRPS16Protein interaction100%MRPS11Protein interaction100%MRPS12Protein interaction100%MRPS2Protein interaction100%MRPS5Protein interaction100%
Tissue Expression6 tissues
Liver
100%
Lung
72%
Heart
63%
Ovary
59%
Bone Marrow
55%
Brain
34%
Gene Interaction Network
Click a node to explore
MRRFMRPL36MRPS16MRPS11MRPS12MRPS2MRPS5
PROTEIN STRUCTURE
Preparing viewer…
PDB7L20 · 3.15 Å · EM
View on RCSB ↗
Constraintⓘ
LOEUFⓘ
1.11LoF Tolerant
pLIⓘ
0.00Tolerant
Observed/Expected LoF0.72 [0.48–1.11]
RankingsWhere MRRF stands among ~20K protein-coding genes
  • #10,208of 20,598
    Most Researched40
  • #11,435of 17,882
    Most Constrained (LOEUF)1.11
Genes detectedMRRF
Sources retrieved10 papers
Response time—
📄 Sources
10▼
1
Compliance with lens replacement and the interval between eye examinations.
PMID: 23458980
Optom Vis Sci · 2013
1.00
2
Assessment of human motor unit twitches--a comparison of spike-triggered averaging and intramuscular microstimulation.
PMID: 7512915
Electroencephalogr Clin Neurophysiol · 1994
0.90
3
Compliance with soft contact lens replacement schedules and associated contact lens-related ocular complications: the UCLA Contact Lens Study.
PMID: 21035748
Optometry · 2010
0.80
4
Parameters of human motor unit twitches obtained by intramuscular microstimulation.
PMID: 1483052
Neuromuscul Disord · 1992
0.70
5
The termination of translation.
PMID: 18206363
Curr Opin Struct Biol · 2008
0.60