Transformation of TXA2 to exTXA2 by PGT

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Prostaglandin Transporter


Rate equation

R110.PNG

Transport Parameters

Kms

Literature values
Value Units Species Notes Weight Reference
0.0054 mM Human Eye Vector: HEK-OATP2A1 or HEK-OATP2B1 and the respective vector controls

Substrate: Latanoprost, a prostaglandin F2a analogue pH: 7.5 Temp: 37 °C

2048 [1]
0.000331 ± 0.000131 mM Transfected Human embryonic kidney cells (HEK293) Substrate: PGE2

pH: unknown Temp: 37 °C

512 [2]
0.007202 ± 0.000595 mM Transfected Human embryonic kidney cells (HEK293) Substrate: PGE3

pH: unknown Temp: 37 °C

512 [2]
0.000376 ± 3.4e-5 mM PGT-expressing Madin-Darby Canine Kidney Epithelial Cells (MDCK) cells Substrate: PGH2

pH: unknown Temp: unknown

192 [3]
9.40E-05 mM Human Substrate: PGE2

Species: Human Vector: HeLa Cell Line pH: 7 Temperature: 27

1024 [4]
0.000423 mM Human Substrate: TXB2

Species: Human Vector: HeLa Cell Line pH: 7 Temperature: 27

1024 [4]
0.007569 mM Human Substrate: 6-Keto-PGF1a

Species: Human Vector: HeLa Cell Line pH: 7 Temperature: 27

1024 [4]
4.87E-05 mM Human Substrate: PGE2

Species: Human Vector: HeLa Cell Line pH: 7 Temperature: 27

1024 [5]
Description of the PGT concentration distribution
Mode (mM) Confidence Interval Location parameter (µ) Scale parameter (σ)
1.73E+01 4.72E+00 3.90E+00 1.02E+00
The estimated probability distribution for PGT concentration. The value and weight of the literature values used to define the distribution are indicated by an orange dashed line. The x axis is plotted on a log-scale.

References

  1. ↑ M. Kraft The prostaglandin transporter OATP2A1 is expressed in human ocular tissues and transports the antiglaucoma prostanoid latanoprost. Invest Ophthalmol Vis Sci. 2010 May;51(5):2504-11. doi: 10.1167/iovs.09-4290. Epub 2009 Dec 17.
  2. ↑ 2.0 2.1 Gose T. Prostaglandin transporter (OATP2A1/SLCO2A1) contributes to local disposition of eicosapentaenoic acid-derived PGE3. Prostaglandins Other Lipid Mediat. 2016 Jan;122:10-7. doi: 10.1016/j.prostaglandins.2015.12.003. Epub 2015 Dec 10.
  3. ↑ Chi Y. The prostaglandin transporter PGT transports PGH2 Biochemical and Biophysical Research Communications, Volume 395, Issue 2, 30 April 2010, Pages 168–172
  4. ↑ 4.0 4.1 4.2 [http://science.sciencemag.org/content/sci/268/5212/866.full.pdf Kanai N. Identification and Characterization of a Prostaglandin Transporter Science 12 May 1995:Vol. 268, Issue 5212, pp. 866-869, DOI: 10.1126/science.7754369]
  5. ↑ Shigekazu I. Structural Determinants of Substrates for the Prostaglandin Transporter PGT Molecular Pharmacology October 1996, 50 (4) 736-742; DOI: https://doi.org/10.1124/mol.50.4.736
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