Seroatlas · Human Serome Atlas

NARF

Nuclear prelamin A recognition factor

Also known as: DKFZp434G0420, FLJ10067, IOP2, NARF_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
Q9UHQ1
Gene
NARF
Ensembl
ENSG00000141562
Chromosome
17
Canonical length
456 aa
Protein class
Predicted intracellular proteins
Subcellular location
Nucleoplasm,Nucleoli

OverviewNCBI Gene

Several proteins have been found to be prenylated and methylated at their carboxyl-terminal ends. Prenylation was initially believed to be important only for membrane attachment. However, another role for prenylation appears to be its importance in protein-protein interactions. The only nuclear proteins known to be prenylated in mammalian cells are prelamin A- and B-type lamins. Prelamin A is farnesylated and carboxymethylated on the cysteine residue of a carboxyl-terminal CaaX motif. This post-translationally modified cysteine residue is removed from prelamin A when it is endoproteolytically processed into mature lamin A. The protein encoded by this gene binds to the prenylated prelamin A carboxyl-terminal tail domain. It may be a component of a prelamin A endoprotease complex. The encoded protein is located in the nucleus, where it partially colocalizes with the nuclear lamina. It shares limited sequence similarity with iron-only bacterial hydrogenases. Alternatively spliced transcript variants encoding different isoforms have been identified for this gene, including one with a novel exon that is generated by RNA editing. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

456 residues, UniProt reviewed canonical sequence.

>Q9UHQ1|NARF
     1  MKCEHCTRKE CSKKTKTDDQ ENVSADAPSP AQENGEKGEF HKLADAKIFL SDCLACDSCM
    61  TAEEGVQLSQ QNAKDFFRVL NLNKKCDTSK HKVLVVSVCP QSLPYFAAKF NLSVTDASRR
   121  LCGFLKSLGV HYVFDTTIAA DFSILESQKE FVRRYRQHSE EERTLPMLTS ACPGWVRYAE
   181  RVLGRPITAH LCTAKSPQQV MGSLVKDYFA RQQNLSPEKI FHVIVAPCYD KKLEALQESL
   241  PPALHGSRGA DCVLTSGEIA QIMEQGDLSV RDAAVDTLFG DLKEDKVTRH DGASSDGHLA
   301  HIFRHAAKEL FNEDVEEVTY RALRNKDFQE VTLEKNGEVV LRFAAAYGFR NIQNMILKLK
   361  KGKFPFHFVE VLACAGGCLN GRGQAQTPDG HADKALLRQM EGIYADIPVR RPESSAHVQE
   421  LYQEWLEGIN SPKAREVLHT TYQSQERGTH SLDIKW

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against NARF 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)
0.28
Highest tissue expression
55 nTPM

Expression across tissuesHPA

Tissue

  • testis: 55 nTPM
  • skeletal muscle: 44 nTPM
  • heart muscle: 35 nTPM
  • bone marrow: 31 nTPM
  • cerebellum: 27 nTPM
  • spleen: 25 nTPM

Single-cell type

  • late spermatids: 781 nCPM
  • neutrophils: 207 nCPM
  • early spermatids: 185 nCPM
  • oocytes: 184 nCPM
  • late primary spermatocytes: 183 nCPM
  • erythrocyte progenitors: 182 nCPM

Immune cell

  • neutrophil: 154 nTPM
  • basophil: 96 nTPM
  • eosinophil: 96 nTPM
  • NK-cell: 53 nTPM
  • T-reg: 44 nTPM
  • naive B-cell: 40 nTPM

Brain region

  • cerebral cortex: 33 nTPM
  • cerebellum: 28 nTPM
  • white matter: 26 nTPM
  • basal ganglia: 25 nTPM
  • pons: 25 nTPM
  • amygdala: 24 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)
1.29
gnomAD pLI
0
gnomAD missense Z
-0.04
DepMap mean gene effect
-0.02
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 7% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).

OntologyGO

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

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

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

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