Neutrophil cytosolic factor 4

Source: Wikipedia, the free encyclopedia.
NCF4
Gene ontology
Molecular function
Cellular component
Biological process
Sources:Amigo / QuickGO
Ensembl
UniProt
RefSeq (mRNA)

NM_000631
NM_013416

NM_008677

RefSeq (protein)

NP_000622
NP_038202

NP_032703

Location (UCSC)Chr 22: 36.86 – 36.88 MbChr 15: 78.13 – 78.15 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Neutrophil cytosol factor 4 is a protein that in humans is encoded by the NCF4 gene.[5][6]

Function

The protein encoded by this gene is a cytosolic regulatory component of the superoxide-producing phagocyte NADPH-oxidase, a multicomponent enzyme system important for host defense. This protein is preferentially expressed in cells of myeloid lineage. It interacts primarily with neutrophil cytosolic factor 2 (NCF2/p67-phox) to form a complex with neutrophil cytosolic factor 1 (NCF1/p47-phox), which further interacts with the small G protein RAC1 and translocates to the membrane upon cell stimulation. This complex then activates flavocytochrome b, the membrane-integrated catalytic core of the enzyme system. The PX domain of this protein can bind phospholipid products of the PI(3) kinase, which suggests its role in PI(3) kinase-mediated signaling events. The phosphorylation of this protein was found to negatively regulate the enzyme activity. Alternatively spliced transcript variants encoding distinct isoforms have been observed.

Clinical significance

GWAS studies showed that Crohn's disease patient with certain SNPs in NCF4 are more susceptible to get Crohn's disease.[7] Crohn's patient with rs4821544 variants showed a decreased reactive oxygen species after stimulation with GM-CSF which is a proinflammtory cytokine.[8]

Interactions

Neutrophil cytosolic factor 4 has been shown to

References

  1. ^ a b c ENSG00000100365 GRCh38: Ensembl release 89: ENSG00000275990, ENSG00000100365Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000071715Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. PMID 8839867
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  6. ^ "Entrez Gene: NCF4 neutrophil cytosolic factor 4, 40kDa".
  7. PMID 21900546
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Further reading