Example of structural proteins?
Structural proteins are fibrous. Some examples of these are: skin, fur, hair, wool, claws, nails, hooves, horns, scales, beaks and feathers.
Structural proteins provide a means of support for cells and is the basis of the shape of organelles in a cell. For example, why people have curly or straight hair is based on the type of a structural protein. Whether the insoluble fiber is an alpha (straight alignment) or beta (curved alignment) allows for the different type of hair.
Proteins present all over cell. Nucleus contains proteins that regulates gene expression and coiling of DNA. Cytosol are rich in enzymes and structural proteins that make up the cell and body. In addition secreted enzymes and proteins are circulating in blood throughout the body (Hemoglobin as a good example to carry oxygen)
There are various class of proteins, here are a few example. structural proteins that build the body such as actin, myosin. Enzymes that catalyse biochemical reactions such as lipase, protease, galatosidase, APOBEC3C. Hormones that regulate the bodily functions such as insulin, glucogon.carrier proteins such as Hb. Immunity-IgGs or antibodies etc.
No, it most be carefully note that all enzymes are mostly proteins and not all proteins are enzymes. Enzymes carry out the catalysis of biochemical reactions in and out of the cells. there are different non enzymatic structural and functional proteins they do have important roles such as hormones, structural proteins such as collagen etc.
Proteins have a wide variety of uses. Proteins in the cellular membrane can transport materials into and out of the cell, Hydrogen pump ATPase proteins use ATP to actively transport hydrogen ions through its membrane, these proteins are almost exclusively found in the lysosomes in mammalian cells. Proteins also are used for structural support int he cytosol, for example actin is used for the cytoskeleton.
Some other types of proteins are enzymes, haemoglobin, antibodies, plasma casein in milk, eeg albumin and the albumins and globulins of blood. The five types of proteins are structural, storage, hormonal, enzyme, and immunoglobulins. All proteins are complex molecules and structural proteins make up the largest class of proteins.