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Alanine

Alanine

(Science: amino acid) alanine is a nonessential amino acid that can be manufactured by the body from other sources as needed. Alanine is one of the simplest of the amino acids and is involved in the energy-producing breakdown of glucose. in conditions of sudden anaerobic energy need, when muscle proteins are broken down for energy, alanine acts as a carrier molecule to take the nitrogen-containing amino group to the liver to be changed to the less toxic urea, thus preventing buildup of toxic products in the muscle cells when extra energy is needed. Because the body easily constructs alanine from other sources, no deficiency state is known. Alanine is found in a wide variety of foods, but is particularly concentrated in meats. a crystalline amino acid that occurs in many proteins.Alanine is one of twenty amino acids that form a polypeptide Chain (proteins).


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When does gluconeogenesis kick in during physical activity?

... would induce a delay of a couple of minutes... Besides, I think the start of GNG should be determined by the time at which the liver starts using alanine/lactate to make glucose, not the time by which said glucose has reached the recipient cells. This is how I understand it, I may be wrong of ...

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by Aymeric
Fri Dec 13, 2013 12:50 pm
 
Forum: Human Biology
Topic: When does gluconeogenesis kick in during physical activity?
Replies: 12
Views: 6273

Re: When does gluconeogenesis kick in during physical activity?

... is in location . GNG takes place in liver where glucose is synthesised and transported to peripheral tissues where is it utilised. And it uses alanine as the solely amino acid, because it's freely exchangeable with pyruvate and lactate.

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by JackBean
Fri Dec 13, 2013 12:14 pm
 
Forum: Human Biology
Topic: When does gluconeogenesis kick in during physical activity?
Replies: 12
Views: 6273

When does gluconeogenesis kick in during physical activity?

... itself, and that aminoacids are used only as a last resort, even though they specified a few pages before that the main substrate for GNG is alanine (followed by lactate and glycerol). So there HAS to exist some factor that apparently delays GNG other than the aforementionned hormones, otherwise ...

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by Aymeric
Fri Dec 13, 2013 10:35 am
 
Forum: Human Biology
Topic: When does gluconeogenesis kick in during physical activity?
Replies: 12
Views: 6273

Gluconeogenesis

... organ for mammals. Gluconeogenesis from lactate is very easy as the lactate is the end product of anerobic glycolysis. Gluconeogenesis from alanine is realtively difficult as the 'N' must be removed as urea. In gluconeogeneis there is no "net" calorie production but a survival ...

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by balamurugan3
Wed Aug 07, 2013 9:57 pm
 
Forum: Cell Biology
Topic: Gluconeogenesis
Replies: 8
Views: 7100

Re: Sequence allignment questions

No, there are only few amino acids marked with : Trp is also red (W) and is not small amino acid. Are alanine and valine small and hydrophobic?

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by TToe
Sat Nov 24, 2012 4:18 pm
 
Forum: Genetics
Topic: Sequence allignment questions
Replies: 6
Views: 2800
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