What proteins are essential to children, so essential they could die without it?

Question

What proteins are essential to children, so essential they could die without it?

Answer 1

All essential amino acids are essential for children and adults. ( Isoleucine, Leucine. Lysine, Methionine, Phenylalanine, Threonine, Thryptophan, Valine; Arginine and Histidine, also Cysteine and Tyrosine are semi-essential, they can`t be synthesized by children. )

http://en.wikipedia.org/wiki/Amino_acid

Arginine :

Infants and young children cannot produce arginine and since arginine is essential for the production and release of the growth hormone, they must receive the amino acid in dietary intake.

Histidine:

http://www.innvista.com/health/nutrition...

Why Histidine is Essential During Infancy

http://www.diet-and-health.net/Nutrients...

The amounts required depend on the age and health of the individual, so it is hard to make general statements about the dietary requirement for some amino acids.

Children would not die without these:

Cysteine:

http://en.wikipedia.org/wiki/Cysteine

Tyrisine:

http://en.wikipedia.org/wiki/Tyrosine