Amino Acid	Residues/1000	Weight Percent
Aspartic Acid	37	4.7
Glutamic Acid	68	9.7
Hydroxyproline	55	6.8
Serine	63	6.0
Glycine	347	21.8
Histidine	15	2.3
Arginine	62	10.6
Threonine	33	3.7
Alanine	109	8.5
Proline	98	10.5
Tyrosine	3	0.5
Valine*	16	1.7
Methionine*	12	1.7
Cysteine	---	---
Isoleucine*	10	1.2
Leucine*	1.8	2.2
Hydroxylysine	9	1.4
Phenylalanine*	13	2.1
Tryptophan*	---	---
Lysine*	32	4.5
Total	1000	99.9

* Essential amino acids. These are readily available in meat, poultry, eggs, fish, milk and cheese which are part of a balanced diet.