MRPL33
protein-codingmitochondrial ribosomal protein L33, the group of Large subunit mitochondrial ribosomal proteins|Mitochondrial ribosomal proteins
Gene summary
Mammalian mitochondrial ribosomal proteins are encoded by nuclear genes and help in protein synthesis within the mitochondrion. Mitochondrial ribosomes (mitoribosomes) consist of a small 28S subunit and a large 39S subunit. They have an estimated 75% protein to rRNA composition compared to prokaryotic ribosomes, where this ratio is reversed. Another difference between mammalian mitoribosomes and prokaryotic ribosomes is that the latter contain a 5S rRNA. Among different species, the proteins comprising the mitoribosome differ greatly in sequence, and sometimes in biochemical properties, which prevents easy recognition by sequence homology. This gene encodes a 39S subunit protein. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]
- C2orf1
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~216.4 kbGenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
No GenCC data available for this gene.
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to MRPL33 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_004891.4. Only rare variants are included.
We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.
Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.
| Effect | PathogenicP | Likely pathogenicLP | VUS | Likely benignLB | BenignB | Sum |
|---|---|---|---|---|---|---|
| synonymous | 1 | 1 | ||||
| missense | 10 | 10 | ||||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 4 | 4 | ||||
| Total | 0 | 0 | 14 | 1 | 0 | 15 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_004882.1 | 4 | MANE Select | |
| Ensembl | ENSP00000296102.3 | 4 | MANE Select | |
| RefSeq | NP_663303.1 | 3 | Standard | |
| Ensembl | ENSP00000368988.3 | 3 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Ribosome - Homo sapiens (human)
- Mitochondrial translation initiation
- Translation
- Metabolism of proteins
- Mitochondrial translation elongation
Biological Process
- mitochondrial translational elongation
- mitochondrial translational termination
Molecular Function
- structural constituent of ribosome
Cellular Component
- mitochondrion
- mitochondrial inner membrane
- mitochondrial large ribosomal subunit
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000296102
- Coding exons
- 4
- Length
- 216371
- Individuals with no LoFs
- 125738
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 6
- Defined
- 125744
- p
- 0.0000239
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 0.373 | 30 | 36.3 | 0.826 | 0.00000213 | 416 |
| Missense (PolyPhen) | 7 | 11.113 | 0.62989 | 141 | ||
| Synonymous | -0.422 | 15 | 13.1 | 1.15 | 7.30e-7 | 120 |
| Loss of Function | 1.58 | 1 | 4.68 | 0.214 | 2.83e-7 | 53 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0 | 0.0 | absent |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0.00016 | 0.00016 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.000018 | 0.000018 | rare |
| South Asian | 0.000033 | 0.000033 | rare |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
Recessive Scores
- pRec
- 0.0665
Intolerance Scores
- LoFtool
- 0.245
- RVIS EVS
- -0.01
- RVIS percentile EVS
- 52.85
Essentials
- Essential (CRISPR)
- E
- Essential (CRISPR2)
- S
- Essential (gene trap)
- E
- Indispensability pred.
- N
- Indispensability score
- 0.231