Text:
What is 20 - ten?

i really like the 3d structure! especially if you work with programs like pymol or the like it is important to know the AA from all angles in 3d : )

would be nice, if the one-letter-code could be entered as solution as well

Name given and structure has to be painted would be nice for studies as well ;)

Good evening
I'd also prefer a 2D structure for studying. I wrote them down like that and you can also find them in all the textbooks / websites ...
But nice page, good idea ;)

Need help, have to find a amino acid as a picture.

The 3d structures are not optimal for recognizing. Maybe it would be possible to have both in parallel or make it selectable how the structures should be displayed.

Just another thing - is it possible to make the name recgonition less sensitive (that you don't have to exactly write the same name)?
It happend a few times to me - for example Glutamninsäure and Valin# was wrong - but, as you can see, I ment the correct thing. Of course this wouldn't happen to me in the exam, but with a keyboard it's a bit different ;-) ...

I would prefer a 2D structure as well ... Because otherwise I can't distinguish between Leucin and Isoleucin. A formula like they have in Wikipedia would be better in my opinion. Besides that a very nice program!! Thanks a lot!

Brilliant website! Especially that there's different pics per aa in the tests. A test for the one letter code would also be very nice.. And isn't R in English "Arginine" rather than "Arginin"? Thank you!!!

I like the 3D-structures! If you learned it like this once, you'll know the Lewis-formulas off pat :)

Nice program - I think it's the only one that is of use and for free. For me it would be more helpful if I'd have the structure in Fischer-projection as well. Would be nice if you could do that.

Hi! Amazing work, really awesome!
Think it would be easier and more comprehensible if it would be the plain form line-formulas :-)

Your Amino Acid portrayal is very helpful.
Is there a convenient way for the discussion to be translated, possibly using a web interface to the google translator
http://www.google.com/ig?hl=en&referrer=ign
A more structural representation of the chemical formula would be helpful:
Asp NH2-CH(CH2-C(-NH2,=O))COOH
There is a recent protein folding modeling tool / competition / game developed to improve the current folding tools available free for download at
www.fold.it

Another vote for the Lewis structure, or also Fischer projection! Apart from that excellent idea and realization.

Thanks a lot!
Has been of great help ...

The idea is nice, just for me the graphical display form is suboptimal for studying compared to the plain display form with lines and characters. I think in an exam they would also use the plain display form. Regards Martin

Very nice program, my compliment.
MBM Flora & Düngemittel GmbH
signed B. Marin

Suuuuuuuch a great program! Helped me a lot! Maybe one thing missing: Sulfur is displayed in yellow, but it's not described at the top. Just for completeness.

Hi!
First: Really nice program!
There is a small detail which catched my eye, that might be not exactly correct:
/ smart ass mode on
The carboxyl group is always protonated here (COOH) whereas the amino group is deprotonated (NH2).
If I'm not totally wrong, this constellation is not occuring in a molecule. With a strong acid pH both groups would be protonated (COOH, NH3+), does the pH rise first the carboxyl group does lose a proton (H+). If the pH is neutral pH=7 we would have COO- and NH3+
/ smart ass mode off
Regards Tobias

Hello!
You might consider offering two more menus: 1-character-code -> 3-character-code and the other way.
I now, this is not that difficult to learn, but would be nice to have it.
Greets, Flo.

Hello!
That would be great, if you'd add the formulas (because if you have to study these little blighters, than it's the formulas ;-))
about the order: It was more refered to the fact, that 7, 8 and 9 are not directly under 1, 2 and 3. Or is this due to my resolution, etc?
Greets, Katy.

Hello!
I don't think the program makes that much sense. I would display the amino acids as formulas. It doesn't look that nice, but is much better for studying, because you don't have to rethink.
Why are the amino acids in the overview ordered that strangely?
Greets, Katy

Hi!
First I want to say that I think your program is nice and good for studying.
Something annoying: -the same amino acid is asked to often (randomize functino seems not to work that well)
Something I like is that you can't immediately see which amino acid is given (some views are kind of twisted), you first have to adapt and and think.
I also think it would be interesting if you'd change the Ball-and-Stick model.

Hi
Maybe the images of the amino acids could be changed. I think they are a bit difficult to discriminate with the current model.
Maybe there could be several models to choose from?
Greets, Tobi