Seroatlas · Human Serome Atlas

RNF103

E3 ubiquitin-protein ligase RNF103

Also known as: hkf-1, KF1, RN103_HUMAN, ZFP103

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

Protein identityUniProt · HPA

UniProt accession
O00237
Gene
RNF103
Ensembl
ENSG00000239305
Chromosome
2
Canonical length
685 aa
Protein class
Enzymes, Metabolic proteins, Predicted membrane proteins

OverviewNCBI Gene

The protein encoded by this gene contains a RING-H2 finger, a motif known to be involved in protein-protein and protein-DNA interactions. This gene is highly expressed in normal cerebellum, but not in the cerebral cortex. The expression of the rat counterpart in the frontal cortex and hippocampus was shown to be induced by elctroconvulsive treatment (ECT) as well as chronic antidepressant treatment, suggesting that this gene may be a molecular target for ECT and antidepressants. The protein is a ubiquitin ligase that functions in the endoplasmic reticulum-associated degradation pathway. Alternative splicing of this gene results in multiple transcript variants. Read-through transcription also exists between this gene and the downstream CHMP3 (charged multivesicular body protein 3) gene. [provided by RefSeq, Oct 2011]

Canonical amino-acid sequenceUniProt

685 residues, UniProt reviewed canonical sequence.

>O00237|RNF103
     1  MWLKLFFLLL YFLVLFVLAR FFEAIVWYET GIFATQLVDP VALSFKKLKT ILECRGLGYS
    61  GLPEKKDVRE LVEKSGDLME GELYSALKEE EASESVSSTN FSGEMHFYEL VEDTKDGIWL
   121  VQVIANDRSP LVGKIHWEKM VKKVSRFGIR TGTFNCSSDP RYCRRRGWVR STLIMSVPQT
   181  STSKGKVMLK EYSGRKIEVE HIFKWITAHA ASRIKTIYNA EHLKEEWNKS DQYWLKIYLF
   241  ANLDQPPAFF SALSIKFTGR VEFIFVNVEN WDNKSYMTDI GIYNMPSYIL RTPEGIYRYG
   301  NHTGEFISLQ AMDSFLRSLQ PEVNDLFVLS LVLVNLMAWM DLFITQGATI KRFVVLISTL
   361  GTYNSLLIIS WLPVLGFLQL PYLDSFYEYS LKLLRYSNTT TLASWVRADW MFYSSHPALF
   421  LSTYLGHGLL IDYFEKKRRR NNNNDEVNAN NLEWLSSLWD WYTSYLFHPI ASFQNFPVES
   481  DWDEDPDLFL ERLAFPDLWL HPLIPTDYIK NLPMWRFKCL GVQSEEEMSE GSQDTENDSE
   541  SENTDTLSSE KEVFEDKQSV LHNSPGTASH CDAEACSCAN KYCQTSPCER KGRSYGSYNT
   601  NEDMEPDWLT WPADMLHCTE CVVCLENFEN GCLLMGLPCG HVFHQNCIVM WLAGGRHCCP
   661  VCRWPSYKKK QPYAQHQPLS NDVPS

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against RNF103 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
Other membrane
Secreted
No
Transmembrane segments
4
Mean surface accessibility (rSASA)
0.38
Highest tissue expression
51 nTPM

Expression across tissuesHPA

Tissue

  • liver: 51 nTPM
  • cerebellum: 46 nTPM
  • epididymis: 43 nTPM
  • heart muscle: 35 nTPM
  • spinal cord: 28 nTPM
  • basal ganglia: 25 nTPM

Single-cell type

  • brain excitatory neurons: 58 nCPM
  • oligodendrocytes: 56 nCPM
  • brain inhibitory neurons: 45 nCPM
  • other brain neurons: 39 nCPM
  • oligodendrocyte progenitor cells: 38 nCPM
  • astrocytes: 35 nCPM

Immune cell

  • eosinophil: 7.3 nTPM
  • basophil: 4.6 nTPM
  • T-reg: 2.5 nTPM
  • NK-cell: 2.3 nTPM
  • memory CD8 T-cell: 1.6 nTPM
  • naive CD4 T-cell: 1.3 nTPM

Brain region

  • cerebellum: 54 nTPM
  • white matter: 43 nTPM
  • basal ganglia: 40 nTPM
  • spinal cord: 37 nTPM
  • midbrain: 36 nTPM
  • medulla oblongata: 36 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)
0.36
gnomAD pLI
0.9
gnomAD missense Z
0.84
DepMap mean gene effect
-0.16
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% 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

InteractionsUniProt · HPA

Protein binding partners of RNF103 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 RNF103 as an antibody target. Whether an autoantibody or antibody against RNF103 could matter depends on whether native RNF103 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

RNF103 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 RNF103 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/RNF103. 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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