Seroatlas · Human Serome Atlas

MRPL49

Large ribosomal subunit protein mL49

Also known as: C11orf4, L49mt, NOF, NOF1, RM49_HUMAN

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
Q13405
Gene
MRPL49
Ensembl
ENSG00000149792
Chromosome
11
Canonical length
166 aa
Protein class
Plasma proteins, Predicted intracellular proteins, Ribosomal proteins

OverviewNCBI Gene

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. Pseudogenes corresponding to this gene are found on chromosomes 5q and 8p. [provided by RefSeq, May 2011]

Canonical amino-acid sequenceUniProt

166 residues, UniProt reviewed canonical sequence.

>Q13405|MRPL49
     1  MAATMFRATL RGWRTGVQRG CGLRLLSQTQ GPPDYPRFVE SVDEYQFVER LLPATRIPDP
    61  PKHEHYPTPS GWQPPRDPPP NLPYFVRRSR MHNIPVYKDI THGNRQMTVI RKVEGDIWAL
   121  QKDVEDFLSP LLGKTPVTQV NEVTGTLRIK GYFDQELKAW LLEKGF

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against MRPL49 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.

Antibody reachability
Intracellular
Secreted
No
Transmembrane segments
0
Mean surface accessibility (rSASA)
0.46
Highest tissue expression
83 nTPM

Expression across tissuesHPA

Tissue

  • adrenal gland: 83 nTPM
  • kidney: 51 nTPM
  • liver: 48 nTPM
  • choroid plexus: 47 nTPM
  • thyroid gland: 43 nTPM
  • ovary: 43 nTPM

Single-cell type

  • syncytiotrophoblasts: 142 nCPM
  • esophageal apical cells: 119 nCPM
  • migrating cytotrophoblasts: 73 nCPM
  • cytotrophoblasts: 72 nCPM
  • esophageal suprabasal cells: 59 nCPM
  • esophageal basal cells: 57 nCPM

Immune cell

  • basophil: 134 nTPM
  • total PBMC: 96 nTPM
  • NK-cell: 96 nTPM
  • memory CD8 T-cell: 84 nTPM
  • naive CD4 T-cell: 81 nTPM
  • eosinophil: 79 nTPM

Brain region

  • choroid plexus: 33 nTPM
  • hypothalamus: 33 nTPM
  • thalamus: 28 nTPM
  • pons: 27 nTPM
  • cerebral cortex: 27 nTPM
  • basal ganglia: 27 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about MRPL49.

Disease | AllUniProt

Conditions MRPL49 is implicated in, by any mechanism.

Disease | GeneticClinVar

7 pathogenic / likely-pathogenic of 48 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

Genetic constraint and essentialitygnomAD · DepMap

Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.

gnomAD LOEUF (loss-of-function intolerance)
1.5
gnomAD pLI
0
gnomAD missense Z
0.28
DepMap mean gene effect
-0.71
DepMap dependency class
common

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 6% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).

OntologyGO

Biological processes

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

  • Large ribosomal subunit protein mL49
  • Mitochondrial large subunit ribosomal protein (Img2)

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of MRPL49 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads MRPL49 as an antibody target. Whether an autoantibody or antibody against MRPL49 could matter depends on whether native MRPL49 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

MRPL49 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.

Annotation status

The present source text does not explicitly label MRPL49 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/MRPL49. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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