Tubulin
Membrane proteins serve a range of important purposes, such as helping cells to communicate, maintain their shape, carry out changes triggered by chemical messengers, and transport and share material. Hopefully this answered your question!
Round
If a proteins shape is changed it has likely been denatured. This is often a breakdown and rearrangement of the protein.
chaperon protiens
carrier proteins transport glucose into a muscle cell
It has to keep its shape to do its particular job.
DNA helps maintain homeostasis by the proteins and lipids associated with DNA and RNA. These proteins and fats regulated both hormones and growth.
Tritiory proteins are globular proteins. Every enzyme is a globular proteins.
Denaturation
There is no real chemical shape of proteins. These are macromolecules, generally with molecular weights of 50,000g/mol (or daltons). Different proteins have different shapes depending on chemical and steric interactions and all proteins are made of amino acid chains
Helps to maintain the structure, flexibility, and motion of proteins.