This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basics of amino acids, Subject name: Biochemistry
Which amino acid has maximum tendency to bind phosphate ? 
Select and explain. 
A. Serine, B. Alanine, C. Phenylalanine, D. Tryptophan
A: Serine
Answer: A: Serine 
Explanation: OH containing amino acid has maximum tendency to bind phosphate Eg.Tyrosine, Threonine and Serine.