BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Serine and tyrosine can form hydrogen bonding. The molecule of tyrosine has three bonds of hydrogen. Also, serine has hydroxyl groups in their side chain. Hence, they both can form hydrogen bonding.

Detailed explanation-2: -A Tyrosine molecule can potentially form three hydrogen bonds. This is because it has two hydrogen bon donors (-OH) and one hydrogen bond acceptor (CO). Structure of tyrosine: Blue are Nitrogens and red are oxygens.

Detailed explanation-3: -Hydroxyl groups are simple structures consisting of an oxygen atom with two lone pairs bonded to a hydrogen atom. They readily participate in hydrogen bonding, generating either a net positively or negatively charged ion.

Detailed explanation-4: -Role in function: Unlike the very similar Phenylalanine, Tyrosine contains a reactive hydroxyl group, thus making it much more likely to be involved in interactions with non protein atoms.

Detailed explanation-5: -The tyrosine oxygen is expected to form a covalent bond with the sulfur atom of the compound displacing the fluorine atom in a substitution reaction (Fig. 1A).