what function??????

Question

do proteins perform in the body.

Answer 1

Debatably, their main function is as enzymes speeding up metabolic reactions.

Answer 2

Proteins are found in each and every cell of out human body.

Proteins are the chief actors within the cell, said to be carrying out the duties specified by the information encoded in genes. With the exception of certain types of RNA, most other biological molecules are relatively inert elements upon which proteins act. Proteins make up half the dry weight of an E. coli cell, while other macromolecules such as DNA and RNA make up only 3% and 20% respectively. The total complement of proteins expressed in a particular cell or cell type at a given time point or experimental condition is known as its proteome.

The chief characteristic of proteins that enables them to carry out their diverse cellular functions is their ability to bind other molecules specifically and tightly. The region of the protein responsible for binding another molecule is known as the binding site and is often a depression or "pocket" on the molecular surface. This binding ability is mediated by the tertiary structure of the protein, which defines the binding site pocket, and by the chemical properties of the surrounding amino acids' side chains. Protein binding can be extraordinarily tight and specific; for example, the ribonuclease inhibitor protein binds to human angiogenin with a sub-femtomolar dissociation constant (<10-15 M) but does not bind at all to its amphibian homolog onconase (>1 M). Extremely minor chemical changes such as the addition of a single methyl group to a binding partner can sometimes suffice to nearly eliminate binding; for example, the aminoacyl tRNA synthetase specific to the amino acid valine discriminates against the very similar side chain of the amino acid isoleucine.

Proteins can bind to other proteins as well as to small-molecule substrates. When proteins bind specifically to other copies of the same molecule, they can oligomerize to form fibrils; this process occurs often in structural proteins that consist of globular monomers that self-associate to form rigid fibers. Protein-protein interactions also regulate enzymatic activity, control progression through the cell cycle, and allow the assembly of large protein complexes that carry out many closely related reactions with a common biological function. Proteins can also bind to, or even be integrated into, cell membranes. The ability of binding partners to induce conformational changes in proteins allows the construction of enormously complex signaling networks.



Moreover, All Enzymes are globular proteins. And you may are aware of the function of enzymes in our body. I am tired of typing so touching the main points now.

Cell signalling.
Ligand Transport
Nails and hairs are proteins.

and much much more.....

Answer 3

-- proteins are important building materials that make up microtubules, microfilaments, and centrioles, spindles, cilia, flagella on the cellular level
-- proteins are parts of the plasma membrane that move molecules across the membrane during active and passive transport, as well as making part of the cell's outer "uniform" to be recognized as one of the body's own cells, and making attachment points for the cytoskeleton on the inner surface of the membrane
-- proteins build parts of living things like hair and fingernails
-- proteins carry oxygen
-- proteins are important in the immune system
-- and, yes, enzymes are proteins that help reactions happen

Answer 4

Most protiens serve as enzymes the speed up metabolic processes.Protiens are essentially known for repairing body tissue.