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Dictionary » P » Pyruvate

Pyruvate

Definition

noun

The carboxylate anion of pyruvic acid.


Supplement

Pyruvate is the end product of glycolysis, which is converted into acetyl coA that enters the Krebs cycle when there is sufficient oxygen available. When the oxygen is insufficient, pyruvate is broken down anaerobically, creating lactate in animals (including humans) and ethanol in plants.


Word origin: PYR(O)– + Latin ūva, grape (from its being produced by the dry distillation of racemic acid, originally derived from grapes) + -ate.

Related forms: pyruvic (adjective).
Related phrases: phosphoenol pyruvate, pyruvate decarboxylation.

See also: pyruvic acid, cellular respiration, glycolysis.


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Co2 from respiration-Sugars vs Fats

okay I'm obviously a noob :) my understanding: you get 3 CO2 during the process pyruvate-->energy you get 2 CO2 during the process Aceytl-CoA-->energy so C6H12O6 would make 6 CO2 and 36 ATP stearic acid would make 18 CO2 and 120 ATP so 120 ATP of sugar = 20 ...

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by key
Sat Feb 16, 2013 7:41 pm
 
Forum: Human Biology
Topic: Co2 from respiration-Sugars vs Fats
Replies: 12
Views: 788

Co2 from respiration-Sugars vs Fats

lol idk, is the extra co2 just from pyruvate dehydrogenase step? so C18H36O18 vs stearic acid would only give 6 extra co2 since that would be (6) C3H6O3

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by key
Thu Feb 14, 2013 5:04 am
 
Forum: Human Biology
Topic: Co2 from respiration-Sugars vs Fats
Replies: 12
Views: 788

Gluconeogenesis

what do you need to hydrolyse and oxidise in alanine to get pyruvate? :-/

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by JackBean
Thu Nov 15, 2012 9:30 am
 
Forum: Cell Biology
Topic: Gluconeogenesis
Replies: 6
Views: 1117

Re: Gluconeogenesis

I'm not too sure, but it may be because gluconeogenesis from amino acids is less favorable than lactate. The [delta]G of L-Lactate to Pyruvate is 25.1, so it's energetically unfavorable. However, to turn lactate into pyruvate, all you need to do is oxidize the hydroxyl group at the C2 carbon. ...

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by bytesyzechic
Wed Nov 14, 2012 11:07 pm
 
Forum: Cell Biology
Topic: Gluconeogenesis
Replies: 6
Views: 1117

Gluconeogenesis

well Lactate dehydrogenase catalyses lactate to pyruvate buut we haven't been taught about the conversion of alanine to pyruvate so i don't know... is it anything to do with amino acids being used by the body during starvation and lactate produced ...

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by beckyacoles
Tue Nov 13, 2012 5:19 pm
 
Forum: Cell Biology
Topic: Gluconeogenesis
Replies: 6
Views: 1117
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