Consensus amino acid symbols:

conserved amino acid residues: bold and uppercase letters (such as G); 

aliphatic residues (I, V, L): l 

aromatic residues (Y, H, W, F): @ 

hydrophobic residues (W, F, Y, M, L, I, V, A, C, T, H): h

alcohol residues (S, T): o

polar residues (D, E, H, K, N, Q, R, S, T): p

tiny residues (A, G, C, S): t

small residues (A, G, C, S, V, N, D, T, P): s

bulky residues (E, F, I, K, L, M, Q, R, W, Y): b

positively charged residues (K, R, H): +

negatively charged residues (D, E): -

charged (D, E, K, R, H): c