Entry
Name
HIF-1 signaling pathway - Ovis aries (sheep)
Description
Hypoxia-inducible factor 1 (HIF-1) is a transcription factor that functions as a master regulator of oxygen homeostasis. It consists of two subunits: an inducibly-expressed HIF-1alpha subunit and a constitutively-expressed HIF-1beta subunit. Under normoxia, HIF-1 alpha undergoes hydroxylation at specific prolyl residues which leads to an immediate ubiquitination and subsequent proteasomal degradation of the subunit. In contrast, under hypoxia, HIF-1 alpha subunit becomes stable and interacts with coactivators such as p300/CBP to modulate its transcriptional activity. Eventually, HIF-1 acts as a master regulator of numerous hypoxia-inducible genes under hypoxic conditions. The target genes of HIF-1 encode proteins that increase O2 delivery and mediate adaptive responses to O2 deprivation. Despite its name, HIF-1 is induced not only in response to reduced oxygen availability but also by other stimulants, such as nitric oxide, or various growth factors.
Class
Environmental Information Processing; Signal transduction
BRITE hierarchy
Pathway map
Ortholog table
Organism
Ovis aries (sheep) [GN:
oas ]
Gene
101103369 IL6R; interleukin-6 receptor subunit alpha isoform X1 [KO:K05055 ]
100294659 STAT3; signal transducer and activator of transcription 3 isoform X10 [KO:K04692 ]
101108228 NFKB1; nuclear factor NF-kappa-B p105 subunit isoform X2 [KO:K02580 ]
443318 IGF1; insulin-like growth factor I precursor [KO:K05459 ]
101109759 PIK3CB; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit beta isoform [KO:K00922 ] [EC:2.7.1.153 ]
101110015 PIK3CA; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform [KO:K00922 ] [EC:2.7.1.153 ]
101117348 PIK3CD; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta isoform isoform X3 [KO:K00922 ] [EC:2.7.1.153 ]
101123247 PIK3R3; phosphatidylinositol 3-kinase regulatory subunit gamma isoform X1 [KO:K02649 ]
101111546 PIK3R2; phosphatidylinositol 3-kinase regulatory subunit beta isoform X2 [KO:K02649 ]
101121455 PIK3R1; phosphatidylinositol 3-kinase regulatory subunit alpha isoform X3 [KO:K02649 ]
101111426 EIF4EBP1; eukaryotic translation initiation factor 4E-binding protein 1 isoform X6 [KO:K07205 ]
101103218 EIF4E2; eukaryotic translation initiation factor 4E type 2 isoform X2 [KO:K03259 ]
101106260 EIF4E1B; eukaryotic translation initiation factor 4E type 1B [KO:K03259 ]
443519 HIF1A; hypoxia-inducible factor 1-alpha isoform X1 [KO:K08268 ]
443285 ARNT; aryl hydrocarbon receptor nuclear translocator [KO:K09097 ]
101103341 PLCG1; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma-1 isoform X1 [KO:K01116 ] [EC:3.1.4.11 ]
101122126 PLCG2; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma-2 isoform X1 [KO:K05859 ] [EC:3.1.4.11 ]
443453 CAMK2A; calcium/calmodulin-dependent protein kinase type II subunit alpha isoform X1 [KO:K04515 ] [EC:2.7.11.17 ]
101113850 CAMK2D; calcium/calmodulin-dependent protein kinase type II subunit delta isoform X4 [KO:K04515 ] [EC:2.7.11.17 ]
101108884 CAMK2G; calcium/calmodulin-dependent protein kinase type II subunit gamma isoform X10 [KO:K04515 ] [EC:2.7.11.17 ]
101118870 CAMK2B; calcium/calmodulin-dependent protein kinase type II subunit beta isoform X1 [KO:K04515 ] [EC:2.7.11.17 ]
443331 TIMP1; metalloproteinase inhibitor 1 precursor [KO:K16451 ]
101114509 LTBR; tumor necrosis factor receptor superfamily member 3 [KO:K03159 ]
443103 VEGFA; vascular endothelial growth factor A precursor [KO:K05448 ]
100381267 SERPINE1; plasminogen activator inhibitor 1 precursor [KO:K03982 ]
443461 SLC2A1; solute carrier family 2, facilitated glucose transporter member 1 [KO:K07299 ]
101113205 PDK1; pyruvate dehydrogenase (acetyl-transferring) kinase isozyme 1, mitochondrial isoform X2 [KO:K12077 ] [EC:2.7.11.2 ]
101103029 pyruvate dehydrogenase E1 component subunit alpha, somatic form, mitochondrial-like [KO:K00161 ] [EC:1.2.4.1 ]
101110118 PDHA1; pyruvate dehydrogenase E1 component subunit alpha, somatic form, mitochondrial [KO:K00161 ] [EC:1.2.4.1 ]
101113677 PDHA2; pyruvate dehydrogenase E1 component subunit alpha, testis-specific form, mitochondrial isoform X1 [KO:K00161 ] [EC:1.2.4.1 ]
Compound
C01245 D-myo-Inositol 1,4,5-trisphosphate
Reference
Authors
Semenza GL
Title
Oxygen homeostasis.
Journal
Reference
Authors
Mole DR, Ratcliffe PJ
Title
Cellular oxygen sensing in health and disease.
Journal
Reference
Authors
Kaelin WG Jr, Ratcliffe PJ
Title
Oxygen sensing by metazoans: the central role of the HIF hydroxylase pathway.
Journal
Reference
Authors
Palazon A, Aragones J, Morales-Kastresana A, de Landazuri MO, Melero I
Title
Molecular pathways: hypoxia response in immune cells fighting or promoting cancer.
Journal
Reference
Authors
Majmundar AJ, Wong WJ, Simon MC
Title
Hypoxia-inducible factors and the response to hypoxic stress.
Journal
Reference
Authors
Greer SN, Metcalf JL, Wang Y, Ohh M
Title
The updated biology of hypoxia-inducible factor.
Journal
Reference
Authors
Zagorska A, Dulak J
Title
HIF-1: the knowns and unknowns of hypoxia sensing.
Journal
Acta Biochim Pol 51:563-85 (2004)
Reference
Authors
Semenza GL
Title
Regulation of oxygen homeostasis by hypoxia-inducible factor 1.
Journal
Reference
Authors
Wenger RH, Stiehl DP, Camenisch G
Title
Integration of oxygen signaling at the consensus HRE.
Journal
Reference
Authors
Lee JW, Bae SH, Jeong JW, Kim SH, Kim KW
Title
Hypoxia-inducible factor (HIF-1)alpha: its protein stability and biological functions.
Journal
Reference
Authors
Weidemann A, Johnson RS
Title
Biology of HIF-1alpha.
Journal
Reference
Authors
Harris AL
Title
Hypoxia--a key regulatory factor in tumour growth.
Journal
Reference
Authors
Knaup KX, Jozefowski K, Schmidt R, Bernhardt WM, Weidemann A, Juergensen JS, Warnecke C, Eckardt KU, Wiesener MS
Title
Mutual regulation of hypoxia-inducible factor and mammalian target of rapamycin as a function of oxygen availability.
Journal
Reference
Authors
Kaluz S, Kaluzova M, Stanbridge EJ
Title
Regulation of gene expression by hypoxia: integration of the HIF-transduced hypoxic signal at the hypoxia-responsive element.
Journal
Reference
Authors
Cadenas S, Aragones J, Landazuri MO
Title
Mitochondrial reprogramming through cardiac oxygen sensors in ischaemic heart disease.
Journal
Reference
Authors
Berchner-Pfannschmidt U, Tug S, Kirsch M, Fandrey J
Title
Oxygen-sensing under the influence of nitric oxide.
Journal
Related pathway
KO pathway
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