Seroatlas · Human Serome Atlas

FECH

Ferrochelatase, mitochondrial

Also known as: HEMH_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
P22830
Gene
FECH
Ensembl
ENSG00000066926
Chromosome
18
Canonical length
423 aa
Protein class
Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Potential drug targets, Predicted intracellular proteins
Quaternary structure
Homotetramer

OverviewNCBI Gene

The protein encoded by this gene is localized to the mitochondrion, where it catalyzes the insertion of the ferrous form of iron into protoporphyrin IX in the heme synthesis pathway. Mutations in this gene are associated with erythropoietic protoporphyria. Two transcript variants encoding different isoforms have been found for this gene. A pseudogene of this gene is found on chromosome 3.[provided by RefSeq, May 2010]

Canonical amino-acid sequenceUniProt

423 residues, UniProt reviewed canonical sequence.

>P22830|FECH
     1  MRSLGANMAA ALRAAGVLLR DPLASSSWRV CQPWRWKSGA AAAAVTTETA QHAQGAKPQV
    61  QPQKRKPKTG ILMLNMGGPE TLGDVHDFLL RLFLDRDLMT LPIQNKLAPF IAKRRTPKIQ
   121  EQYRRIGGGS PIKIWTSKQG EGMVKLLDEL SPNTAPHKYY IGFRYVHPLT EEAIEEMERD
   181  GLERAIAFTQ YPQYSCSTTG SSLNAIYRYY NQVGRKPTMK WSTIDRWPTH HLLIQCFADH
   241  ILKELDHFPL EKRSEVVILF SAHSLPMSVV NRGDPYPQEV SATVQKVMER LEYCNPYRLV
   301  WQSKVGPMPW LGPQTDESIK GLCERGRKNI LLVPIAFTSD HIETLYELDI EYSQVLAKEC
   361  GVENIRRAES LNGNPLFSKA LADLVHSHIQ SNELCSKQLT LSCPLCVNPV CRETKSFFTS
   421  QQL

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against FECH 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
0
Mean surface accessibility (rSASA)
0.31
Highest tissue expression
37 nTPM

Expression across tissuesHPA

Tissue

  • bone marrow: 37 nTPM
  • skeletal muscle: 10 nTPM
  • kidney: 8.3 nTPM
  • tongue: 6.9 nTPM
  • liver: 5.2 nTPM
  • thymus: 4.3 nTPM

Single-cell type

  • erythrocyte progenitors: 241 nCPM
  • erythrocytes: 235 nCPM
  • oligodendrocytes: 54 nCPM
  • cytotrophoblasts: 47 nCPM
  • hofbauer cells: 46 nCPM
  • megakaryocyte-erythroid progenitors: 40 nCPM

Immune cell

  • eosinophil: 8 nTPM
  • NK-cell: 6.8 nTPM
  • myeloid DC: 6.3 nTPM
  • intermediate monocyte: 4.9 nTPM
  • non-classical monocyte: 4.9 nTPM
  • memory CD8 T-cell: 4.7 nTPM

Brain region

  • white matter: 22 nTPM
  • pons: 19 nTPM
  • basal ganglia: 17 nTPM
  • cerebral cortex: 17 nTPM
  • choroid plexus: 16 nTPM
  • medulla oblongata: 16 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about FECH.

Disease | AllUniProt

Conditions FECH is implicated in, by any mechanism.

Disease | GeneticClinVar

78 pathogenic / likely-pathogenic of 306 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

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)
0.62
gnomAD pLI
0
gnomAD missense Z
1.34
DepMap mean gene effect
-0.49
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

  • Ferrochelatase
  • Ferrochelatase, active site
  • Ferrochelatase, C-terminal
  • Ferrochelatase, N-terminal
  • Ferrochelatase

KeywordsUniProt

InteractionsUniProt · HPA

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

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

Canonical record: https://seroatlas.com/gene/FECH. 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).

Loading the interactive Seroatlas protein explorer...