|WikiProject Chemicals||(Rated Start-class, Low-importance)|
I'm redirecting this to Vitamin B6; anyone feel free to expand it into an article if you have something to say about apart from what's covered in Vitamin B6. — Knowledge Seeker দ 7 July 2005 06:44 (UTC)
Percentage of vitamine B6 activity
The article reads that PLP is a prosthetic group but I think it is rather a cofactor. The difference is, that prosthetic groups are permanently bound to the enzyme and cofactors are not. — Preceding unsigned comment added by 22.214.171.124 (talk) 22:45, 13 March 2012 (UTC)
The molecular forumla or the ball and stick model seems wrong. C8 H10 N O6 P - 2 too many H or the model needs 2 more H. Or have I missed something? This 3D model shows 2 more H 
The ball and stick model seems fine, though it is at physiological protonation states so the phosphate group is dianionic, which is what you meant about 2 more H. The convention with molecular formulas is to write them as neutral compounds, so the phosphate group is fully protonated, despite its low pKa. Louisa.star (talk 03:21, 11 April 2013 (UTC)
Catalytic mechanism (Scheme)
The IUPAC name is listed as '[(4-formyl-5-hydroxy-6-methylpyridin-3-yl)methoxy]phosphonic acid', which (obviously) seems wrong to me, and according to the structure depicted. Said structure clearly depicts an X-methyl phosphate and not an X-methoxy phosphonic acid, since it does not contain any C-P bond. Please note, I am no expert on the topical biochemistry. I am, however, certain about the chemical nomenclature, even though  agrees with the given name. Sadly.
If "the L in PLP does not indicate a levorotatory chiral center", then what DOES it stand for? The given information is almost as useless as saying nothing, isn't it?. I've looked it up on the web but couldn't get a proper answer... Thanks.
PLP stands for pyridoxal 5' phosphate and PMP stands for pyridoxamine 5' phosphate. Consequently, the L in PLP does not indicate a levorotatory chiral center.
The common names pyridoxamine (aminomethyl group at position 4), pyroxidal (carbaldehyde group) and pyridoxine (alkaloid, has hydroxymethyl) derive from pyridine + oxy + a IUPAC suffix.Pyridine, in turn, comes from the Greek πῦρ, πυρός (pyr, fire) + -ide + -ine. It should be noted that the oxy infix in pyridoxine is not based on Hantzsch–Widman nomenclature (the heterocyclic ring is simply a modified pyridine) and the pyr- root does not indicate it to be a dimeric acid anhydride (unlike pyrophosphate).
Note: What does it means by the term "transaldiminated"? What is the formal definition for the term "transaldimination"? One of the few journals that used the term "transaldimination" is from NCBI by Moore PS, Dominici P and Voltattorni CB (https://www.ncbi.nlm.nih.gov/pubmed/8789463). Another more recent publication from the Russian Journal of General Chemistry by F. V. Pishchugin (http://link.springer.com/article/10.1134/S1070363213060121). If the term "transaldimination" indeed acceptable, can a clear definition and a page be made about it? Are there any alternative terms that can explain this concept clearly and precisely? — Preceding unsigned comment added by Zyvov (talk • contribs) 02:54, 21 October 2016 (UTC)