Biochemistry prob?

Question

The solubility of tyrosine is 0.04 g/100g and that of phenylalanine is 2.965.The only difference between the two molecules is the presence of a hyroxyl group on the benzene of tyrosine.Normally we should expect the solubility of tyrosine in water to be much higher than that of phenylalanine coz of the phenol group.Or its nt the case.Can anyone explain to me y tyrosine has a lower solubility than phenylalanine?

Thx 4those hoo ans.

Answer 1

I suppose you have assumed that tyrosine does not possess a phenol group and now you're wondering why less of it is dissolved in water?

Tyrosine and phenylalanine are almost identical in their structure (phenol group included), except that tyrosine has an extra hydroxyl group (i.e. --OH) attached to the benzene ring. Both are nonpolar because of the presence of the benzene ring.