FYW
The nonpolar aromatic AA's have all Y's and two of them got an T.
I remember the aromatics because they spell fwy (the abbreviation for freeway). Once you know that fwy are the aromatics, they should be easier to remember.
T
yrosine
Tryptophan (pronnounced t
wiptophan w/ a slight lisp)
Phenylalanine (pronounced
fenylalanine)
STC
These should be fairly simple. Serine is the only aa that starts with S, cysteine is the only amino acid that starts with C, and threonine is one of the only two that begins with T. (also if you draw out threonine, the side chain makes a t-like structure [although its closer to a y]).
KHR
Histadine is the only aa that starts with H
Lysine begins with lyse which means to
kill
Arginine is pronounced with an
R sound first
DE
NQ
Aspartate is one carbon shorter that glutamate and its abbreviation also comes before glutamate's. The same applies to the amide versions of these amino acids (asparagine and glutamine). I don't have a good way of remembering that DENQ represent the carboxylic acids and their derrivatives, though. (however, I remember N because you are adding a nitrogen-based group [an amine] to aspartate to make asparagine).
As for specifically remembering the grouping, I had to memorize the structures at the same time as all of the abbreviations and such, so all I had to do was remember the structure and it was easy to group the aa's based on the structure.