MRPL41

Chr 9

mitochondrial ribosomal protein L41

Also known as: BMRP, MRP-L27, MRPL27, PIG3, RPML27, mL41

This protein is a component of the mitochondrial ribosome large subunit and is involved in mitochondrial protein synthesis, while also playing roles in apoptosis and cell cycle regulation by enhancing p53 stability and promoting cell cycle arrest. Mutations in MRPL41 cause autosomal recessive mitochondrial disease with features including developmental delay, seizures, and metabolic dysfunction. The gene shows moderate constraint against loss-of-function variants, consistent with its essential role in mitochondrial function.

OMIMResearchSummary from RefSeq, UniProt
DNmechanismLOEUF 1.17
Clinical SummaryMRPL41
Population Constraint (gnomAD)
Moderately constrained gene (pLI 0.56) — some intolerance to loss-of-function variants.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Moderate LoF intolerance
LoF Constraint
1.17LOEUF
pLI 0.555
Z-score 1.45
OE 0.00 (0.001.17)
Moderately constrained

Highly tolerant — LoF variants common in population

Missense Constraint
0.42Z-score
OE missense 0.86 (0.701.06)
60 obs / 69.8 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.00 (0.001.17)
00.351.4
Missense OE0.86 (0.701.06)
00.61.4
Synonymous OE1.15
01.21.6
LoF obs/exp: 0 / 2.4Missense obs/exp: 60 / 69.8Syn Z: -0.64
DN
0.6455th %ile
GOF
0.5072th %ile
LOF
0.4038th %ile

The highest-scoring mechanism for this gene is dominant-negative.

DNprediction above median

Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

MRPL41 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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