Protein Domain Biology
Domains are distinct functional and or structural units in a protein.
Protein domain biology. Domains may exist in a variety of biological contexts where similar domains can be found in proteins with different functions. 2 the linc complex in plants. Each domain forms a compact folded three dimensional structure.
Usually they are responsible for a particular function or interaction contributing to the overall role of a protein. Sun domain protein homologues have been discovered in several plant species including rice arabidopsis and maize graumann runions evans 2010. Many proteins consist of several domains.
Like the ph domain above many domains are not unique to the protein products of one gene but instead appear in a variety of proteins. Molecular evolution uses domains as building blocks and these may. A structural domain is an element of the protein s overall structure that is stable and often folds independently of the rest of the protein chain.
A protein domain is a region of the protein s polypeptide chain that is self stabilizing and that folds independently of the rest of the protein s polypeptide chain.