MARS1

methionyl-tRNA synthetase 1

Relationship to CMT

Candidate — 12q13.3
First described 2024 Candidate gene
Subtype1
SubtypeInheritanceClassOMIMSentinel Publication
SubtypeCMT2U Inheritance— ClassCandidate OMIMn/a Sentinel Publicationnot recorded

ClinVar Variants

Pathogenic and likely pathogenic variants in MARS1, as classified in ClinVar, are read live from NCBI.

Reported in CMT
Reported in Other Diseases

Reported in a disease other than CMT. Listed apart rather than counted as CMT variants.

Variants w/o a Recorded Disease

Pathogenic or likely pathogenic in ClinVar, submitted without a disease recorded.

What the review stars mean

Review stars are ClinVar’s measure of how well a classification is supported: four for a practice guideline, three for an expert panel review, two for agreement among multiple submitters, and one for a single submitter with criteria provided. A record with no criteria provided earns no stars and is not indexed.

Only aggregate germline records are indexed. Uncertain and conflicting classifications are not. Experts in CMT makes no claim to the accuracy of ClinVar data. This index is provided for informational purposes only.

Gene Function

MARS1 catalyzes the specific attachment of L-methionine to its cognate tRNA in a 2 step reaction: the amino acid (AA) is first activated by ATP to form AA-AMP and then transferred to the acceptor end of the tRNA. Plays a role in the synthesis of ribosomal RNA in the nucleolus. In addition, can prevent the misincorporation of homocysteine into tRNA and protein by catalyzing a tRNA-independent hydrolysis of the misactivated homocysteinyl-AMP intermediate. The homocysteinyl-AMP intermediate undergoes an intramolecular cyclization reaction in which the thiolate side chain of homocysteine displaces the AMP group, forming homocysteine-thiolactone and AMP (By similarity) Source: UniProt

Indexed Identifiers

No HGNC Aliases
hgnc_idHGNC:6898
ensembl_gene_idENSG00000166986
coords_grch38chr12:57475445-57517702
coords_grch37chr12:57869228-57911352
entrez_id4141
omim_gene156560
uniprot_idsP56192
refseq_accessionNM_004990
mane_refseqNM_004990.4
mane_ensemblENST00000262027.10

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