I don't! We never had to learn them all, we just learned about them and the primary, secondary (pleated sheet/helix), tertiary, etc. shapes, peptide bonds, enzymes, and stuff like that. Do you have to learn the 20 types?
Here's an essential amino acid mneumonic I found:
Essential Amino Acids
PriVaTe TIM HALL (you can abbreviate PVT.)
Phe, Val, Thr, Trp, Ile, Met, His, Arg, Leu, Lys
"PVT. TIM HALL always arg
ues, never tir
- Always argues: the A is for Arg, not Asp.
- 'Never tires': T is not Tyr, but is both Thr and Trp.
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