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MRPL44

Synonyms
COXPD16, L44MT, MRP-L44
External resources
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.

Variant counts

The variants found in rare patients tested by 3billion are classified and counted according to ACMG guidelines. The variants with over 5% variant frequency in population genome databases ( gnomAD, dbSNP, etc) are excluded.

Pathogenic
4
Likely pathogenic
2
VUS
665
Likely benign
405
Benign
0

Patient phenotypes

Proportions of phenotypes among 6 patients carrying pathogenic or likely pathogenic variants on MRPL44 gene are displayed below.

Phenotype class
Patients in 3billion (%)
Abnormality of the cardiovascular system
33.3%
Abnormality of the ear
33.3%
Abnormality of the musculoskeletal system
33.3%
Abnormality of the nervous system
33.3%
Abnormality of head or neck
16.7%
Abnormality of the eye
16.7%
Growth abnormality
16.7%
Abnormal cellular phenotype
0%
Abnormality of blood and blood-forming tissues
0%
Abnormality of limbs
0%
Abnormality of metabolism homeostasis
0%
Abnormality of prenatal development or birth
0%
Abnormality of the breast
0%
Abnormality of the digestive system
0%
Abnormality of the endocrine system
0%
Abnormality of the genitourinary system
0%
Abnormality of the immune system
0%
Abnormality of the integument
0%
Abnormality of the respiratory system
0%
Abnormality of the thoracic cavity
0%
Abnormality of the voice
0%
Constitutional symptom
0%
Neoplasm
0%

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