1. Arginine, who are you? Why so important?

2. Release 2015_01 of 07-Jan-15 of UniProtKB/Swiss-Prot contains 547357 sequence entries, comprising 194874700 amino acids Ala (A) 8.26 Gln (Q) 3.93 Leu (L) 9.66 Ser (S) 6.58 Arg (R) 5.53 Glu (E) 6.74 Lys (K) 5.83 Thr (T) 5.34 Asn (N) 4.05 Gly (G) 7.08 Met (M) 2.41 Trp (W) 1.09 Asp (D) 5.46 His (H) 2.27 Phe (F) 3.86 Tyr (Y) 2.92 Cys (C) 1.37 Ile (I) 5.94 Pro (P) 4.71 Val (V) 6.87

3. 252 structures were randomly selected fromthis set for the present analysis