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Does Anyone Know What The Chemical Bonds Of The Molecule Alanine Are?

suggestions for additions[edit]

  • toxic effects of alanine overdose
  • anticodon information
  • expansion of protein proportion to cover all Kingdoms
  • method for mass production (industrial scale)

Courtland 18:08, July 31, 2005 (UTC)

I would also add the Isoelectric and pKa's which has been already included in far lesser developed Wikipedias such as the Spanish Wikipedia. Heathmoor (talk) 23:59, 1 October 2009 (UTC)

      • The pictures of alanine represent what is wrong with science education in the USA. While trying to educate and inform, we take short-cuts making further understanding even harder. There is no pH that would allow that caboxylic acid group to have its hydrogen while still denying the amino group of ITS hydrogen.(Not sure where to put this comment, sorry if I did it wrong.) — Preceding unsigned comment added by (talk) 15:55, 17 January 2013 (UTC)

wording of 1st sentence[edit]

Alanine is one of the 20 most common natural amino acids sounds misleading to me.

I'm assuming the intended meaning is "Alanine is one of the most common natural amino acids, of which there are 20" (biochem textbook states 7.8% occurence, ranked #2 behind Leucine at 9.1%). The way it is worded though, it seems to mean "Alanine is one of a group of 20 natural amino acids, of which there are many more but this group of 20 is collectively the most common." Though this statement is probably correct (assuming natural a.a.s are more common than synthetic ones), it does not convey the meaning that among natural amino acids, it is one of the most common.

-- Bubbachuck 16:13, 21 August 2005 (UTC)

For example, the present statement would be analogous to saying "The lion is one of the 5 most common large cats" when the meaning should be "The lion is one of the most common large cats, of which there are 5". The difference is that the first sentence is saying that there are more than 5 large cats, but the lion is one of the most common among them.

I'm not sure what you're saying it means or should mean. There are more than 20 amino acids that qualify as "natural". In any case, I've changed the first sentence in a way that makes this irrelevant. Josh Cherry 16:29, 21 August 2005 (UTC)

Structural formula[edit]

Have I gone cross-eyed, or is that D-alanine in the structural formula?

No you haven't, it is D-alanine. All the common L-amino acids have been drawn the wrong way - both on the Amino acid page and on there individual pages. I'll address this issue to WikiProject Chemicals. Tnanks for spotting the mistake. You might as well get an user account and join the community. -- Boris 13:37, 10 January 2006 (UTC)
The 2-D structure dosn't clarify if this article on ALANINE deals with L-alanine, D-alanine or DL-alanine. On the other hand, the 3D structure shows (S)-alanine [L-alanine]. Both, L-alanine and D-alanine are natural products! Thus, IMO the structures are not consistent with each other. Best regards from Germany -- (talk) 21:38, 12 June 2009 (UTC)

*EPR* is used to measure concentration of Alanine radicals[edit]

I think concentration of alanine radicals is usually determined via EPR (Electron Paramagnetic Resonance), not via NMR (nuclear magnetic resonance, as claimed in the final paragraph of current alanine entry).

See, for example, ( Alanine Radicals, Part IV: Relative amounts of radical species in alanine dosimeters (E. Malinen et al.) in


  1. ^ Radiat Res. 2003 Feb;159(2):p149-53