Where is glucose-6-phosphatase located?

  • Thread starter Thread starter Matt204823545
  • Start date Start date
  • Tags Tags
    cell
Click For Summary

Discussion Overview

The discussion revolves around the location of glucose-6-phosphatase within human cells, specifically whether it is solely embedded in the endoplasmic reticulum (ER) membrane or if it may exist in other locations as well. Participants explore the implications of enzyme localization and the resources available for further information.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant asserts that glucose-6-phosphatase is "located: embedded in the ER membrane" based on their notes and seeks confirmation and additional resources.
  • Another participant questions the assumption that enzymes are localized in only one place, suggesting that the question pertains to where the chemical reaction occurs within the cell.
  • A participant references the Human Protein Atlas as a resource that indicates glucose-6-phosphatase (specifically the G6PC3 subunit) is localized to the endoplasmic reticulum but notes that this does not confirm it is the only location for the enzyme.
  • It is mentioned that the experimental methods used to determine enzyme localization may only reflect the majority location and that variations could exist in different cell lines.
  • One participant expresses gratitude for the information provided about the Human Protein Atlas, highlighting its usefulness for biology students.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether glucose-6-phosphatase is exclusively located in the ER or if it may also be found in other areas of the cell. Multiple views regarding enzyme localization and the reliability of available data remain present.

Contextual Notes

The discussion highlights limitations in the available data regarding enzyme localization, including the dependency on specific experimental conditions and the small number of cell lines studied.

Matt204823545
Messages
18
Reaction score
5
TL;DR
Where in the cell is this enzyme located?
I have it as "located: embedded in the ER membrane" in my notes. Is this correct? Below is the image I use in my studies. Is this the only place in the cell where this enzyme is located? Is there a website that I can use to find the locations of enzymes in cells? Specifically: the human body only. Wikipedia doesn't really help.

http://127.0.0.1:4051/paste-a4b199645f5e135c8bbc2524e9c2902821c1ef54.jpg
 
Biology news on Phys.org
I do not have much knowledge on cell biology, but I assume your question is restated as "where in the cell the chemical reaction you are watching takes place?" because transportation of enzyme in the cell seems not probable to me.

Wiki Glucose 6-phosphatase :
However, the corresponding residue in glucose 6-phosphatase-α (Lys76) resides within the ER membrane and its function, if any, is currently undetermined. With the exception of Lys76, these residues are all located on the luminal side of the ER membrane.[4]

So I was wrong as for residue storage.
 
Last edited:
The human protein atlas is a good resource to get a general idea of where inside the cell many human proteins reside: https://www.proteinatlas.org/

The site has data for one of the subunits of glucose-6-phosphatase (G6PC3), and it shows that it is indeed localized to the endoplasmic reticulum: https://www.proteinatlas.org/ENSG00000141349-G6PC3/cell

However, this data cannot say that this is the only location that the enzyme is located. The type of experiment used to determine the location of the enzyme only really pinpoints where the majority of the enzyme resides and the experiment was only performed in a small number of cell lines. It is possible that a smaller fraction of the enzyme could be elsewhere inside of the cell, and it's possible that the location could differ in other cell lines.
 
  • Like
  • Informative
  • Love
Likes   Reactions: pinball1970, Matt204823545, jim mcnamara and 1 other person
Ygggdrasil said:
The human protein atlas is a good resource to get a general idea of where inside the cell many human proteins reside: https://www.proteinatlas.org/

The site has data for one of the subunits of glucose-6-phosphatase (G6PC3), and it shows that it is indeed localized to the endoplasmic reticulum: https://www.proteinatlas.org/ENSG00000141349-G6PC3/cell

However, this data cannot say that this is the only location that the enzyme is located. The type of experiment used to determine the location of the enzyme only really pinpoints where the majority of the enzyme resides and the experiment was only performed in a small number of cell lines. It is possible that a smaller fraction of the enzyme could be elsewhere inside of the cell, and it's possible that the location could differ in other cell lines.
Thank you so much. That is EXACTLY what I was looking for and is what every university should provide to its biology students (why the heck don't they!?). I wish I found that website earlier. I can't thank you enough!
 
  • Like
Likes   Reactions: jim mcnamara

Similar threads

  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 31 ·
2
Replies
31
Views
7K
  • · Replies 11 ·
Replies
11
Views
6K
  • · Replies 2 ·
Replies
2
Views
5K
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 5 ·
Replies
5
Views
5K
Replies
16
Views
6K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 14 ·
Replies
14
Views
4K
  • · Replies 4 ·
Replies
4
Views
5K