Question

what is the formula of protein??​

Answer 1

(NH2)COOH

Although amino acids may have other formulas, those in protein invariably have the general formula RCH(NH2)COOH, where C is carbon, H is hydrogen, N is nitrogen, O is oxygen, and R is a group, varying in composition and structure, called a side chain.

Answer 2

Proteins

Proteins are naturally occurring polypeptides. They:

contribute to the mechanical structure of animals, including humans, e.g. keratin in hair and fingernails, and fibrous proteins such as collagen in tendons

enable animals to move, e.g. myosin in muscle

facilitate transport of smaller molecules around animals' bodies, e.g. haemoglobin

control the types and rates of chemical reactions in living things; then they are called enzymes, e.g. amylase

are important components of the human immune system, e.g. immunoglobins

Proteins make up about 15% of our body mass. They are the most abundant 'solid' substances in our bodies. Amino acids have the general structural molecular formula -NH2CHRCOOH.

They have two important functional groups (a functional group means a group of atoms in a molecule that have characteristic chemical reactions regardless of the rest of the molecule):

carboxylic acid group

-COOH

amine group

-NH2