Seroatlas · Human Serome Atlas

RBMXL2

RNA-binding motif protein, X-linked-like-2

Also known as: HNRNPG-T, HNRPGT, RMXL2_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
O75526
Gene
RBMXL2
Ensembl
ENSG00000170748
Chromosome
11
Canonical length
392 aa
Protein class
Predicted intracellular proteins

OverviewNCBI Gene

This gene belongs to the HNRPG subfamily of ubiquitously expressed heterogeneous nuclear ribonucleoproteins (hnRNPs). The hnRNPs are RNA binding proteins and they complex with heterogeneous nuclear RNA (hnRNA). These proteins are associated with pre-mRNAs in the nucleus and appear to influence pre-mRNA processing and other aspects of mRNA metabolism and transport. While all of the hnRNPs are present in the nucleus, some seem to shuttle between the nucleus and the cytoplasm. The hnRNP proteins have distinct nucleic acid binding properties. The protein encoded by this gene has two RRM domains that bind RNAs. This gene is intronless and is thought to be derived from a processed retroposon. However, unlike many retroposon-derived genes, this gene is not a pseudogene. The encoded protein has similarity to HNRPG and RBMY proteins and it is suggested to replace HNRPG protein function during meiotic prophase or act as a germ cell-specific splicing regulator. It primarily localizes to the nuclei of meiotic spermatocytes. This gene is a candidate for autosomal male infertility. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

392 residues, UniProt reviewed canonical sequence.

>O75526|RBMXL2
     1  MVEADRPGKL FIGGLNLETD EKALEAEFGK YGRIVEVLLM KDRETNKSRG FAFVTFESPA
    61  DAKAAARDMN GKSLDGKAIK VAQATKPAFE SSRRGPPPPR SRGRPRFLRG TRGGGGGPRR
   121  SPSRGGPDDD GGYTADFDLR PSRAPMPMKR GPPPRRVGPP PKRAAPSGPA RSSGGGMRGR
   181  ALAVRGRDGY SGPPRREPLP PRRDPYLGPR DEGYSSRDGY SSRDYREPRG FAPSPGEYTH
   241  RDYGHSSVRD DCPLRGYSDR DGYGGRDRDY GDHLSRGSHR EPFESYGELR GAAPGRGTPP
   301  SYGGGGRYEE YRGYSPDAYS GGRDSYSSSY GRSDRYSRGR HRVGRPDRGL SLSMERGCPP
   361  QRDSYSRSGC RVPRGGGRLG GRLERGGGRS RY

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against RBMXL2 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)
0.66
Highest tissue expression
29 nTPM

Expression across tissuesHPA

Tissue

  • testis: 29 nTPM
  • liver: 0.1 nTPM
  • retina: 0.1 nTPM
  • spinal cord: 0.1 nTPM
  • adipose tissue: 0 nTPM
  • adrenal gland: 0 nTPM

Single-cell type

  • late primary spermatocytes: 317 nCPM
  • late spermatids: 247 nCPM
  • early spermatids: 135 nCPM
  • early primary spermatocytes: 111 nCPM
  • differentiating spermatogonia: 15 nCPM
  • undifferentiated spermatogonia: 8.6 nCPM

Immune cell

  • basophil: 0 nTPM
  • classical monocyte: 0 nTPM
  • eosinophil: 0 nTPM
  • gdT-cell: 0 nTPM
  • intermediate monocyte: 0 nTPM
  • MAIT T-cell: 0 nTPM

Brain region

  • white matter: 0.6 nTPM
  • spinal cord: 0.5 nTPM
  • basal ganglia: 0.4 nTPM
  • cerebral cortex: 0.4 nTPM
  • medulla oblongata: 0.4 nTPM
  • midbrain: 0.4 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)
0.73
gnomAD pLI
0.07
gnomAD missense Z
0.24
DepMap mean gene effect
0.03
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% 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

KeywordsUniProt

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads RBMXL2 as an antibody target. Whether an autoantibody or antibody against RBMXL2 could matter depends on whether native RBMXL2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

RBMXL2 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 RBMXL2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/RBMXL2. 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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