Table 1.

Academic use of amino acids in the literature as observed on the Internet

Amino Acid	Use	Amino Acid	Use	Amino Acid	Use
Tyrosine, Y	4,690	Proline, P	1,410	Histidine, H	912
Glutamate, E*	4,288	Methionine, M	1,330	Phenylalanine, F	772
Glycine, G	2,900	Tryptophan, W	1,330	Threonine, T	574
Cysteine, C**	2,633	Aspartate, D***	1,206	Valine, V	266
Arginine, R	2,210	Alanine, A	1,090	Asparagine, N	184
Serine, S	2,040	Glutamine, Q	1,020	Isoleucine, I	148
Lysine, K	1,950	Leucine, L	948	Stop, #	76

Limits: Google Scholar search engine, articles and patents, title, full amino acid name, since 2010 to 05/28/12.

Notes:

^*Sum of Glutamate: 3,670 + “Glutamic Acid”: 618 = 4,288;

^**Sum of Cysteine: 2,390 + Cystine: 243 = 2,633;

^***Sum of Aspartate: 918 + “Aspartic Acid”: 288 = 1,206;

^#Sum of “Stop Codons”: 18 + “Stop Codon”: 52 + “Nonsense Codons”: 4 + “Nonsense Codon”: 2 = 76; for comparison with the normal Stops, “Nonsense Mutation”: 135 + “Nonsense Mutations”: 54 + “Stop Mutation”: 10 = 199, locating these mutations with 15 hits above N [05/28/2012].