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 NDVPSLocalizationUniProt · 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
- central nervous system development
- endoplasmic reticulum mannose trimming
- ERAD pathway
- protein ubiquitination
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Zinc finger, RING-type
- Zinc finger, RING/FYVE/PHD-type
- Ring finger domain
- E3 ubiquitin-protein ligase RNF103
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.
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