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 QQLLocalizationUniProt · 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.
- Protoporphyria, erythropoietic, 1 (EPP1) MIM:177000
Disease | GeneticClinVar
78 pathogenic / likely-pathogenic of 306 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Protoporphyria, erythropoietic, 1
- FECH-related disorder
- Autosomal erythropoietic protoporphyria
- See cases
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
- cellular response to dexamethasone stimulus
- cholesterol metabolic process
- erythrocyte differentiation
- generation of precursor metabolites and energy
- heme A biosynthetic process
- heme B biosynthetic process
- heme biosynthetic process
- multicellular organismal-level iron ion homeostasis
- protoporphyrinogen IX metabolic process
- response to arsenic-containing substance
- response to ethanol
- response to insecticide
- response to lead ion
- response to light stimulus
- response to methylmercury
- response to platinum ion
- response to xenobiotic stimulus
- very-low-density lipoprotein particle assembly
- detection of UV
- regulation of hemoglobin biosynthetic process
Molecular functions
- 2 iron, 2 sulfur cluster binding
- ferrous iron binding
- heme binding
- identical protein binding
- iron-responsive element binding
- protein homodimerization activity
- ferrochelatase activity
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.
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