Seroatlas · Human Serome Atlas

MRPL47

Large ribosomal subunit protein uL29m

Also known as: CGI-204, NCM1, RM47_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
Q9HD33
Gene
MRPL47
Ensembl
ENSG00000136522
Chromosome
3
Canonical length
250 aa
Protein class
Plasma proteins, Predicted intracellular proteins, Ribosomal proteins
Subcellular location
Mitochondria

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. This gene encodes a 39S subunit protein. This gene is immediately adjacent to the gene for BAF complex 53 kDa subunit protein a (BAF53a), in a tail-to-tail orientation. Two transcript variants encoding different protein isoforms have been identified. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

250 residues, UniProt reviewed canonical sequence.

>Q9HD33|MRPL47
     1  MAAAGLALLC RRVSSALKSS RSLITPQVPA CTGFFLSLLP KSTPNVTSFH QYRLLHTTLS
    61  RKGLEEFFDD PKNWGQEKVK SGAAWTCQQL RNKSNEDLHK LWYVLLKERN MLLTLEQEAK
   121  RQRLPMPSPE RLDKVVDSMD ALDKVVQERE DALRLLQTGQ ERARPGAWRR DIFGRIIWHK
   181  FKQWVIPWHL NKRYNRKRFF ALPYVDHFLR LEREKRARIK ARKENLERKK AKILLKKFPH
   241  LAEAQKSSLV

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against MRPL47 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)
0.5
Highest tissue expression
62 nTPM

Expression across tissuesHPA

Tissue

  • choroid plexus: 62 nTPM
  • tongue: 53 nTPM
  • heart muscle: 52 nTPM
  • testis: 51 nTPM
  • skeletal muscle: 50 nTPM
  • bone marrow: 46 nTPM

Single-cell type

  • late primary spermatocytes: 729 nCPM
  • early spermatids: 353 nCPM
  • gastric progenitor cells: 288 nCPM
  • parietal cells: 180 nCPM
  • oocytes: 166 nCPM
  • esophageal basal cells: 152 nCPM

Immune cell

  • non-classical monocyte: 55 nTPM
  • T-reg: 49 nTPM
  • myeloid DC: 49 nTPM
  • eosinophil: 44 nTPM
  • intermediate monocyte: 44 nTPM
  • plasmacytoid DC: 42 nTPM

Brain region

  • hypothalamus: 32 nTPM
  • choroid plexus: 31 nTPM
  • cerebellum: 31 nTPM
  • white matter: 30 nTPM
  • spinal cord: 29 nTPM
  • medulla oblongata: 28 nTPM

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)
0.89
gnomAD pLI
0
gnomAD missense Z
-0.22
DepMap mean gene effect
-0.34
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 13% 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 uL29m, mitochondrial
  • MRP-L47 superfamily, mitochondrial
  • Mitochondrial 39-S ribosomal protein L47 (MRP-L47)

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of MRPL47 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 MRPL47 as an antibody target. Whether an autoantibody or antibody against MRPL47 could matter depends on whether native MRPL47 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

MRPL47 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 MRPL47 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/MRPL47. 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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