Difference between revisions of "Transformation of PGH2 to PGF2α"

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The isomerisation of PGH2 to PGF2a is performed by PGFS. This reaction results in the formation of two hydroxyl groups at C9 and C11. This reaction takes place in the cytosol of cells and the cofactor is NADPH. PGFS is found to also catalyse the conversion of aldehydes and ketones to PGF2a, for example the conversion of PGD2 to PGF2a.
  
 
PGF2α has been found to be produced by keratinocyte cells in vitro (Rhodes, Gledhill et al. 2009). This species is synthesised from PGH2 via the prostaglandin F synthase (PGFS) or the PGE 9-ketoreductase enzymes. Upon production this species have been associated with pigmentation, inflammation and hair growth in the skin (Scott, Leopardi et al. 2004, Scott, Fricke et al. 2007). The species has various inflammatory roles such as a pro-inflammatory effect upon the system by facilitating pain transmission (Murata, Ushikubi et al. 1997) and also an anti-inflammatory effect by inhibiting lymphocyte and endothelial cell interactions (Della Bella, Molteni et al. 2001).
 
PGF2α has been found to be produced by keratinocyte cells in vitro (Rhodes, Gledhill et al. 2009). This species is synthesised from PGH2 via the prostaglandin F synthase (PGFS) or the PGE 9-ketoreductase enzymes. Upon production this species have been associated with pigmentation, inflammation and hair growth in the skin (Scott, Leopardi et al. 2004, Scott, Fricke et al. 2007). The species has various inflammatory roles such as a pro-inflammatory effect upon the system by facilitating pain transmission (Murata, Ushikubi et al. 1997) and also an anti-inflammatory effect by inhibiting lymphocyte and endothelial cell interactions (Della Bella, Molteni et al. 2001).

Revision as of 16:58, 1 February 2019

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The isomerisation of PGH2 to PGF2a is performed by PGFS. This reaction results in the formation of two hydroxyl groups at C9 and C11. This reaction takes place in the cytosol of cells and the cofactor is NADPH. PGFS is found to also catalyse the conversion of aldehydes and ketones to PGF2a, for example the conversion of PGD2 to PGF2a.

PGF2α has been found to be produced by keratinocyte cells in vitro (Rhodes, Gledhill et al. 2009). This species is synthesised from PGH2 via the prostaglandin F synthase (PGFS) or the PGE 9-ketoreductase enzymes. Upon production this species have been associated with pigmentation, inflammation and hair growth in the skin (Scott, Leopardi et al. 2004, Scott, Fricke et al. 2007). The species has various inflammatory roles such as a pro-inflammatory effect upon the system by facilitating pain transmission (Murata, Ushikubi et al. 1997) and also an anti-inflammatory effect by inhibiting lymphocyte and endothelial cell interactions (Della Bella, Molteni et al. 2001).

Reaction

R3 PGH2 -PGF2A.jpg

Chemical equation

 PGH2 \rightleftharpoons PGF2a

Rate equation

R03.PNG

Parameters

Michaelis-Menten Constants
Value Units Species Notes Reference
1.90E-03 ± 1.5E-03  mM Human Placental Aldose Reductase (AKR1B1) [1]
1.80E-02  mM  Human Lung PGF2a Synthase (AKR1C3) [1]
Enzyme Turnover Numbers
Value Units Species Notes Reference
14.9 per minute Mouse/Swine Prostamide/PGF Synthase Purified

from Swine Brain and of Murine Enzyme Expressed in E. coli

[2]
PGFS Abundance
Value Units Species Notes Reference
105  ppm Human Expression Vector: Platelet

Enzyme: PGFS pH: 7.5 Temperature: 37 °C

[3]
19.9  ppm Human Expression Vector: Lung

Enzyme: PGFS pH: 7.5 Temperature: 37 °C

[4]
40.3  ppm Human Expression Vector: Esophagus

Enzyme: PGFS pH: 7.5 Temperature: 37 °C

[4]
110  ppm Human Expression Vector: Oral Cavity

Enzyme: PGFS pH: 7.5 Temperature: 37 °C

[4]

References


Related Reactions