Cytochrome C Oxidase Subunit IV Isoform 2 (Lung) Proteine (COX4I2)

Bezeichnung:
Cytochrome C Oxidase Subunit IV Isoform 2 (Lung) Proteine (COX4I2)
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Synonyme:
COX4, cox4-2, Cox4b, cox4l2, CoxIV-2, dJ857M17.2, zgc:73355
alle Proteine anzeigen Gen GeneID UniProt
COX4I2 84701 Q96KJ9
Maus COX4I2 COX4I2 84682 Q91W29
Ratte COX4I2 COX4I2 84683 Q91Y94

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Weitere Proteine zu Cytochrome C Oxidase Subunit IV Isoform 2 (Lung) Interaktionspartnern

Mouse (Murine) Cytochrome C Oxidase Subunit IV Isoform 2 (Lung) (COX4I2) Interaktionspartner

  1. Cox4i2 is essential for acute but not chronic pulmonary oxygen sensing by triggering mitochondrial hyperpolarization.

  2. Data (including data from cells of transgenic mouse embryos) suggest Hif1a (hypoxia inducible factor 1 alpha subunit) up-regulates transcription of heart/muscle isoform Cox7a1 (zeige COX7A1 Proteine) under hypoxia; hypoxic induction of isoform Cox4i2 is HIF1a (zeige HIF1A Proteine)-independent.

  3. propose a model in which reduced tissue ATP levels explain protection from airway hyperresponsiveness, i.e., absence of COX4i2 leads to reduced lung COX (zeige CPOX Proteine) activity and ATP levels, which results in impaired airway constriction

  4. the presence of the COX (zeige CPOX Proteine) isoform IV-2 suppresses the sensitivity of COX (zeige CPOX Proteine) to its allosteric regulator ATP and overrules the regulation of COX (zeige CPOX Proteine) by the cellular energy level

  5. Cytochrome c oxidase subunit IV (zeige COX4I1 Proteine) is essential for assembly and respiratory function of the enzyme complex.

  6. Under conditions of reduced oxygen availability, hypoxia-inducible factor 1 (zeige HIF1A Proteine) reciprocally regulates COX4 (zeige COX4I1 Proteine) subunit expression by activating transcription of the genes encoding COX4-2 and LON (zeige LONP1 Proteine), a mitochondrial protease that is required for COX4-1 (zeige COX4I1 Proteine) degradation.

Human Cytochrome C Oxidase Subunit IV Isoform 2 (Lung) (COX4I2) Interaktionspartner

  1. Identification of three transcription factors that bind a conserved responsive element of the COX4I2 gene, namely recombination signal sequence-binding protein Jkappa (RBPJ (zeige RBPJ Proteine)), coiled-coil-helix-coiled-coil-helix domain 2 (CHCHD2) and CXXC finger protein 5 (CXXC5 (zeige CXXC5 Proteine)).

  2. Mutation analysis of COX4I2 is warranted in patients with malabsorption due to exocrine pancreatic insufficiency and in patients with dyserythropoeitic anemia.

  3. COX4I2 is regulated by a novel oxygen sensitive promoter element (5'-GGACGTTCCCACG-3') conserved in mammals. Gene activity is maximal at 4% oxygen. Lung cytochrome c oxidase (COX) is 2.5 fold more active compared to liver COX, which lacks COX4I2.

  4. COX4I2 is expressed in the highly oxygenated lung tissue. It is found in all cell types of the lung.

Cytochrome C Oxidase Subunit IV Isoform 2 (Lung) (COX4I2) Protein Überblick

Protein Überblick

Cytochrome c oxidase (COX), the terminal enzyme of the mitochondrial respiratory chain, catalyzes the electron transfer from reduced cytochrome c to oxygen. It is a heteromeric complex consisting of 3 catalytic subunits encoded by mitochondrial genes and multiple structural subunits encoded by nuclear genes. The mitochondrially-encoded subunits function in electron transfer, and the nuclear-encoded subunits may be involved in the regulation and assembly of the complex. This nuclear gene encodes isoform 2 of subunit IV. Isoform 1 of subunit IV is encoded by a different gene, however, the two genes show a similar structural organization. Subunit IV is the largest nuclear encoded subunit which plays a pivotal role in COX regulation.

Alternative names and synonyms associated with Cytochrome C Oxidase Subunit IV Isoform 2 (Lung) (COX4I2)

  • cytochrome c oxidase subunit IV isoform 2 (lung) (COX4I2)
  • cytochrome c oxidase subunit IV isoform 2 (cox4i2)
  • cytochrome c oxidase subunit IV isoform 2 (lung) (cox4i2)
  • cytochrome c oxidase subunit IV isoform 2 (Cox4i2)
  • cytochrome c oxidase subunit IV isoform 2 (lung) (Cox4i2)
  • COX4 Protein
  • cox4-2 Protein
  • Cox4b Protein
  • cox4l2 Protein
  • CoxIV-2 Protein
  • dJ857M17.2 Protein
  • zgc:73355 Protein

Bezeichner auf Proteinebene für COX4I2

COX IV-2 , cytochrome c oxidase subunit 4 isoform 2, mitochondrial , cytochrome c oxidase subunit IV-like 2 , Cox4-2 , Cox IV-2 , cytochrome c oxidase, subunit IVb , cytochrome c oxidase, subunit 4b

GENE ID SPEZIES
84701 Homo sapiens
393776 Danio rerio
444815 Xenopus laevis
549699 Xenopus (Silurana) tropicalis
713095 Macaca mulatta
84682 Mus musculus
84683 Rattus norvegicus
618339 Bos taurus
Ausgewählte Anbieter für Cytochrome C Oxidase Subunit IV Isoform 2 (Lung) Proteine (COX4I2)
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