Difference between revisions of "Transformation of PGF2a to exPGF2a by PGT"

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== Transport Parameters ==
 
== Transport Parameters ==
−
 
+
===K<sub>ms</sub>===
 
{|class="wikitable sortable"  
 
{|class="wikitable sortable"  
−
|+  style="text-align: left;" | Michaelis-Menten Constants
+
|+  style="text-align: left;" | Literature values
 
|-
 
|-
 
! Value
 
! Value
Line 17: Line 17:
 
! Species
 
! Species
 
! Notes
 
! Notes
 +
! Weight
 
! Reference
 
! Reference
 
|-
 
|-
Line 26: Line 27:
 
pH: 7.5
 
pH: 7.5
 
Temp: 37 °C
 
Temp: 37 °C
 +
|2048
 
|<ref name="Kraft2010"> [https://www.ncbi.nlm.nih.gov/pubmed/20019365 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.]</ref>
 
|<ref name="Kraft2010"> [https://www.ncbi.nlm.nih.gov/pubmed/20019365 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.]</ref>
 
|-
 
|-
Line 34: Line 36:
 
pH: unknown
 
pH: unknown
 
Temp: 37 °C
 
Temp: 37 °C
 +
|512
 
|<ref name="Gose2016"> [https://www.ncbi.nlm.nih.gov/pubmed/26692285 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.]</ref>
 
|<ref name="Gose2016"> [https://www.ncbi.nlm.nih.gov/pubmed/26692285 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.]</ref>
 
|-
 
|-
Line 42: Line 45:
 
pH: unknown
 
pH: unknown
 
Temp: 37 °C
 
Temp: 37 °C
 +
|512
 
|<ref name="Gose2016"> [https://www.ncbi.nlm.nih.gov/pubmed/26692285 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.]</ref>
 
|<ref name="Gose2016"> [https://www.ncbi.nlm.nih.gov/pubmed/26692285 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.]</ref>
 
|-
 
|-
Line 50: Line 54:
 
pH: unknown
 
pH: unknown
 
Temp: unknown
 
Temp: unknown
 +
|192
 
|<ref name="Chi2010"> [http://www.sciencedirect.com/science/article/pii/S0006291X10005723 Chi Y. ''The prostaglandin transporter PGT transports PGH2'' Biochemical and Biophysical Research Communications, Volume 395, Issue 2, 30 April 2010, Pages 168–172]</ref>
 
|<ref name="Chi2010"> [http://www.sciencedirect.com/science/article/pii/S0006291X10005723 Chi Y. ''The prostaglandin transporter PGT transports PGH2'' Biochemical and Biophysical Research Communications, Volume 395, Issue 2, 30 April 2010, Pages 168–172]</ref>
 
|-
 
|-
Line 60: Line 65:
 
pH: 7
 
pH: 7
 
Temperature: 27
 
Temperature: 27
 +
|1024
 
|<ref name="Kanai1995"> [http://science.sciencemag.org/content/sci/268/5212/866.full.pdf Kanai N. ''Identification and Characterization of a
 
|<ref name="Kanai1995"> [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]</ref>
 
Prostaglandin Transporter'' Science  12 May 1995:Vol. 268, Issue 5212, pp. 866-869, DOI: 10.1126/science.7754369]</ref>
Line 71: Line 77:
 
pH: 7
 
pH: 7
 
Temperature: 27
 
Temperature: 27
 +
|1024
 
|<ref name="Kanai1995"> [http://science.sciencemag.org/content/sci/268/5212/866.full.pdf Kanai N. ''Identification and Characterization of a
 
|<ref name="Kanai1995"> [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]</ref>
 
Prostaglandin Transporter'' Science  12 May 1995:Vol. 268, Issue 5212, pp. 866-869, DOI: 10.1126/science.7754369]</ref>
Line 82: Line 89:
 
pH: 7
 
pH: 7
 
Temperature: 27
 
Temperature: 27
 +
|1024
 
|<ref name="Kanai1995"> [http://science.sciencemag.org/content/sci/268/5212/866.full.pdf Kanai N. ''Identification and Characterization of a
 
|<ref name="Kanai1995"> [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]</ref>
 
Prostaglandin Transporter'' Science  12 May 1995:Vol. 268, Issue 5212, pp. 866-869, DOI: 10.1126/science.7754369]</ref>
Line 93: Line 101:
 
pH: 7
 
pH: 7
 
Temperature: 27
 
Temperature: 27
 +
|1024
 
|<ref name="SHIGEKAZU1996"> [http://molpharm.aspetjournals.org/content/molpharm/50/4/736.full.pdf 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]</ref>
 
|<ref name="SHIGEKAZU1996"> [http://molpharm.aspetjournals.org/content/molpharm/50/4/736.full.pdf 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]</ref>
 
|-
 
|-
−
|5.02E-05
+
|}
−
|mM
+
 
−
|Human
+
{| class="wikitable"
−
|Substrate: PGF2a
+
|+  style="text-align: left;" | Description of the PGT Kms distribution
−
Species: Human
+
! Mode (mM) !! Confidence Interval  !! Location parameter (µ) !! Scale parameter (σ)
−
Vector: HeLa Cell Line
 
−
pH: 7
 
−
Temperature: 27
 
−
|<ref name="SHIGEKAZU1996"> [http://molpharm.aspetjournals.org/content/molpharm/50/4/736.full.pdf 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]</ref>
 
−
|-
 
−
|0.005
 
−
|mM
 
−
|Human
 
−
|Substrate: 15-Keto-PGE2
 
−
Species: Human
 
−
Vector: HeLa Cell Line
 
−
pH: 7
 
−
Temperature: 27
 
−
|<ref name="SHIGEKAZU1996"> [http://molpharm.aspetjournals.org/content/molpharm/50/4/736.full.pdf 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]</ref>
 
−
|-
 
−
|0.005
 
−
|mM
 
−
|Human
 
−
|Substrate: 13,14-Dihydo-15-Keto-PGE2
 
−
Species: Human
 
−
Vector: HeLa Cell Line
 
−
pH: 7
 
−
Temperature: 27
 
−
|<ref name="SHIGEKAZU1996"> [http://molpharm.aspetjournals.org/content/molpharm/50/4/736.full.pdf 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]</ref>
 
−
|-
 
−
|3.82E-05
 
−
|mM
 
−
|Human
 
−
|Substrate: PGH2
 
−
Species: Human
 
−
Vector: HeLa Cell Line
 
−
pH: 7
 
−
Temperature: 27
 
−
|<ref name="SHIGEKAZU1996"> [http://molpharm.aspetjournals.org/content/molpharm/50/4/736.full.pdf 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]</ref>
 
 
|-
 
|-
 +
| 1.10E-03 || 9.42E+01 || -4.67E+00 || 1.45E+00
 
|}
 
|}
  
 +
[[Image:133.jpg|none|thumb|500px|The estimated probability distribution for PGT Kms. 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.  ]]
  
 +
===k<sub>cat</sub>===
 
No data available on the turnover of PGT/ an organic molecule transporter therefore based upon estimates made by http://book.bionumbers.org/what-are-the-rates-of-membrane-transporters/
 
No data available on the turnover of PGT/ an organic molecule transporter therefore based upon estimates made by http://book.bionumbers.org/what-are-the-rates-of-membrane-transporters/
 
{|class="wikitable sortable"  
 
{|class="wikitable sortable"  
Line 146: Line 124:
 
! Transporter
 
! Transporter
 
! Notes
 
! Notes
 +
! Weight
 
! Reference
 
! Reference
 
|-
 
|-
Line 153: Line 132:
 
|Organism: Bacteria Escherichia coli
 
|Organism: Bacteria Escherichia coli
 
Back of the envelope calculation by BioNumbers: http://bionumbers.hms.harvard.edu/bionumber.aspx?&id=102931
 
Back of the envelope calculation by BioNumbers: http://bionumbers.hms.harvard.edu/bionumber.aspx?&id=102931
 +
|8
 
|<ref name="Waygood1980"> [https://www.ncbi.nlm.nih.gov/pubmed/6992959?dopt=Abstract Waygood EB ''Enzyme I of the phosphoenolpyruvate: sugar phosphotransferase system of Escherichia coli. Purification to homogeneity and some properties.''Can J Biochem. 1980 Jan;58(1):40-8.]</ref>
 
|<ref name="Waygood1980"> [https://www.ncbi.nlm.nih.gov/pubmed/6992959?dopt=Abstract Waygood EB ''Enzyme I of the phosphoenolpyruvate: sugar phosphotransferase system of Escherichia coli. Purification to homogeneity and some properties.''Can J Biochem. 1980 Jan;58(1):40-8.]</ref>
 
|-
 
|-
Line 160: Line 140:
 
|Organism: Bacteria Escherichia coli
 
|Organism: Bacteria Escherichia coli
 
Back of the envelop calculation on bionumbers http://bionumbers.hms.harvard.edu/bionumber.aspx?&id=103159
 
Back of the envelop calculation on bionumbers http://bionumbers.hms.harvard.edu/bionumber.aspx?&id=103159
 +
|8
 
|<ref name="Naftalin2007"> [https://www.ncbi.nlm.nih.gov/pubmed/17325012?dopt=Abstract Naftalin R. J. ''ELactose permease H+-lactose symporter: mechanical switch or Brownian ratchet?''Biophys J. 2007 May 15;92(10):3474-91. Epub 2007 Feb 26.]</ref>
 
|<ref name="Naftalin2007"> [https://www.ncbi.nlm.nih.gov/pubmed/17325012?dopt=Abstract Naftalin R. J. ''ELactose permease H+-lactose symporter: mechanical switch or Brownian ratchet?''Biophys J. 2007 May 15;92(10):3474-91. Epub 2007 Feb 26.]</ref>
 
|-
 
|-
Line 167: Line 148:
 
|Organism: Budding yeast Saccharomyces cerevisiae
 
|Organism: Budding yeast Saccharomyces cerevisiae
 
Back of the envelope calculation http://bionumbers.hms.harvard.edu/bionumber.aspx?&id=101737
 
Back of the envelope calculation http://bionumbers.hms.harvard.edu/bionumber.aspx?&id=101737
 +
|8
 
|<ref name="Ye2001"> [https://www.ncbi.nlm.nih.gov/pubmed/11561293?dopt=Abstract Ye L. ''Expression and activity of the Hxt7 high-affinity hexose transporter of Saccharomyces cerevisiae''Yeast. 2001 Sep 30;18(13):1257-67.]</ref>
 
|<ref name="Ye2001"> [https://www.ncbi.nlm.nih.gov/pubmed/11561293?dopt=Abstract Ye L. ''Expression and activity of the Hxt7 high-affinity hexose transporter of Saccharomyces cerevisiae''Yeast. 2001 Sep 30;18(13):1257-67.]</ref>
 
|-
 
|-
 
|}
 
|}
 +
 +
{| class="wikitable"
 +
|+  style="text-align: left;" | Description of the PGT kcat distribution
 +
! Mode (min-1) !! Confidence Interval  !! Location parameter (µ) !! Scale parameter (σ)
 +
|-
 +
| 1.33E+00 || 7.30E+00 || 9.20E-01 || 8.00E-01
 +
|}
 +
 +
[[Image:132.jpg|none|thumb|500px|The estimated probability distribution for PGT kcat. 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.  ]]
 +
 +
=== Transporter concentration ===
 +
 +
To convert the enzyme concentration from ppm to mM, the following [[Common equations#Enzyme concentration (mM)|equation]] was used.
  
 
{|class="wikitable sortable"  
 
{|class="wikitable sortable"  
Line 178: Line 173:
 
! Species
 
! Species
 
! Notes
 
! Notes
 +
! Weight
 
! Reference
 
! Reference
 
|-
 
|-
Line 187: Line 183:
 
pH: 7.5
 
pH: 7.5
 
Temperature: 37 °C
 
Temperature: 37 °C
 +
|2048
 
|<ref name="Kim2014"> [http://www.nature.com/nature/journal/v509/n7502/pdf/nature13302.pdf M. Kim ''A draft map of the human proteome'' Nature, 2014 509, 575–581]</ref>
 
|<ref name="Kim2014"> [http://www.nature.com/nature/journal/v509/n7502/pdf/nature13302.pdf M. Kim ''A draft map of the human proteome'' Nature, 2014 509, 575–581]</ref>
 
|-
 
|-
Line 196: Line 193:
 
pH: 7.5
 
pH: 7.5
 
Temperature: 37 °C
 
Temperature: 37 °C
 +
|2048
 
|<ref name="Wilhelm2014"> [http://www.nature.com/nature/journal/v509/n7502/pdf/nature13319.pdf M. Wilhelm ''Mass-spectrometry-based draft of the human proteome'' Nature, 2014 509, 582–587]</ref>
 
|<ref name="Wilhelm2014"> [http://www.nature.com/nature/journal/v509/n7502/pdf/nature13319.pdf M. Wilhelm ''Mass-spectrometry-based draft of the human proteome'' Nature, 2014 509, 582–587]</ref>
 
|-
 
|-
Line 205: Line 203:
 
pH: 7.5
 
pH: 7.5
 
Temperature: 37 °C
 
Temperature: 37 °C
 +
|2048
 
|<ref name="Kim2014"> [http://www.nature.com/nature/journal/v509/n7502/pdf/nature13302.pdf M. Kim ''A draft map of the human proteome'' Nature, 2014 509, 575–581]</ref>
 
|<ref name="Kim2014"> [http://www.nature.com/nature/journal/v509/n7502/pdf/nature13302.pdf M. Kim ''A draft map of the human proteome'' Nature, 2014 509, 575–581]</ref>
 
|-
 
|-
 
|}
 
|}
  
 +
{| class="wikitable"
 +
|+  style="text-align: left;" | Description of the PGT concentration distribution
 +
! Mode (ppm) !! Mode (mM) !! Confidence Interval  !! Location parameter (µ) !! Scale parameter (σ)
 +
|-
 +
| 1.73E+01 ||9.57E-05|| 4.72E+00 || 3.90E+00 || 1.02E+00
 +
|}
 +
 +
[[Image:165.jpg|none|thumb|500px|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 ==
 
== References ==
 
<references/>
 
<references/>

Latest revision as of 11:52, 30 May 2019

Return to overview

Prostaglandin Transporter


Rate equation

R101.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 Kms distribution
Mode (mM) Confidence Interval Location parameter (µ) Scale parameter (σ)
1.10E-03 9.42E+01 -4.67E+00 1.45E+00
The estimated probability distribution for PGT Kms. 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.

kcat

No data available on the turnover of PGT/ an organic molecule transporter therefore based upon estimates made by http://book.bionumbers.org/what-are-the-rates-of-membrane-transporters/

Turnover Number
Value Units Transporter Notes Weight Reference
3.5 min-1 Glucose transporter ptsI Organism: Bacteria Escherichia coli

Back of the envelope calculation by BioNumbers: http://bionumbers.hms.harvard.edu/bionumber.aspx?&id=102931

8 [6]
0.33 - 0.83 min-1 Rate of transport of H+/Lactose transporter Organism: Bacteria Escherichia coli

Back of the envelop calculation on bionumbers http://bionumbers.hms.harvard.edu/bionumber.aspx?&id=103159

8 [7]
3.28 min-1 Catalytic Rate of transporter HXT7 Organism: Budding yeast Saccharomyces cerevisiae

Back of the envelope calculation http://bionumbers.hms.harvard.edu/bionumber.aspx?&id=101737

8 [8]
Description of the PGT kcat distribution
Mode (min-1) Confidence Interval Location parameter (µ) Scale parameter (σ)
1.33E+00 7.30E+00 9.20E-01 8.00E-01
The estimated probability distribution for PGT kcat. 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.

Transporter concentration

To convert the enzyme concentration from ppm to mM, the following equation was used.

Abundance
Value Units Species Notes Weight Reference
125 ppm Human Vector:Lung

Enzyme: SLCO2A1 pH: 7.5 Temperature: 37 °C

2048 [9]
17.4 ppm Human Expression Vector: Esophagus

Enzyme: SLCO2A1 pH: 7.5 Temperature: 37 °C

2048 [10]
2.82 ppm Human Vector:Gut

Enzyme: SLCO2A1 pH: 7.5 Temperature: 37 °C

2048 [9]
Description of the PGT concentration distribution
Mode (ppm) Mode (mM) Confidence Interval Location parameter (µ) Scale parameter (σ)
1.73E+01 9.57E-05 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
  6. ↑ Waygood EB Enzyme I of the phosphoenolpyruvate: sugar phosphotransferase system of Escherichia coli. Purification to homogeneity and some properties.Can J Biochem. 1980 Jan;58(1):40-8.
  7. ↑ Naftalin R. J. ELactose permease H+-lactose symporter: mechanical switch or Brownian ratchet?Biophys J. 2007 May 15;92(10):3474-91. Epub 2007 Feb 26.
  8. ↑ Ye L. Expression and activity of the Hxt7 high-affinity hexose transporter of Saccharomyces cerevisiaeYeast. 2001 Sep 30;18(13):1257-67.
  9. ↑ 9.0 9.1 M. Kim A draft map of the human proteome Nature, 2014 509, 575–581
  10. ↑ M. Wilhelm Mass-spectrometry-based draft of the human proteome Nature, 2014 509, 582–587
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