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| L-Amino Acid StructuresNotes: 1) loading of all molecules may take some time; 2) molecules are not all shown at the same scaleBackbones are oriented amino (left) to carboxy (right)  R-group sidechains project upward from the backbone alpha carbonExcept for the alpha carbon, the CPK atom coloring scheme is used: C, H, N, O, P, SName colors indicate: hydrophobic, polar (non-charged), polar (charged-basic), polar (charged-acidic) | 
| alanine (ala = A)  
          
	  
           | valine 
        (val = V) rotate 360o | leucine 
        (leu = L) rotate 360o | isoleucine 
        (ile = I) rotate 360o | methionine 
        (met = M) rotate 360o | 
|  
        proline (pro = P) rotate 360o | phenylalanine 
        (phe = F) rotate 360o |  
        tryptophan (trp = W) rotate 360o | glycine 
        (gly = G) rotate 360o | serine 
        (ser = S) rotate 360o | 
| threonine 
        (thr = T) rotate 360o | glutamine 
        (gln = Q) rotate 360o | asparagine 
        (asn = N) rotate 360o | cysteine 
        (cys = C) rotate 360o | tyrosine 
        (tyr = Y) rotate 360o | 
| glutamic 
        acid (glu = E) rotate 360o | aspartic 
        acid (asp = D) rotate 360o | arginine 
        (arg = R) rotate 360o | lysine 
        (lys = K) rotate 360o | histidine 
        (his = H) rotate 360o |