thyroxine
glycine
serine
glutamine
2006-08-24 01:48:08 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
All amino acids are used in protein synthesis. That is, there are no amino acids that are not in any proteins. Many amino acids, however, are metabolized - glutamine, for example, is often used as energy source (similar to glucose).
By the way, thryoxine is not an amino acid.
2006-08-24 14:19:12 · answer #1 · answered by Anonymous · 0⤊ 0⤋
actually, all of the amino acids have to be present for the synthesis to be possible, though some acids are only there for chemical support, and do not actually become part of the synthesized cells.
2006-08-24 08:51:09 · answer #2 · answered by grumpy 4 · 0⤊ 0⤋
I'm not sure but I don't think any amino acid is excluded from any and all protein synthesis.
2006-08-24 08:54:53 · answer #3 · answered by Michael B 5 · 0⤊ 0⤋
Thyroxine is a hormone that regulates metabolic pathways, I don't think it is actually incorporated into human proteins. I know for a fact that glycine, serine and glutamine ARE included in proteins, so if it HAS to be one, its thyroxine.
2006-08-24 09:02:27 · answer #4 · answered by Duluth06ChE 3 · 0⤊ 0⤋