Definition
noun
(1) An autonomously folding functional unit of a protein.
(2) A part of protein that can fold, function and exist independently of the rest of the protein chain or structure.
Supplement
Protein domains vary in length. Some can consist of about 25 amino acids while others up to 500 amino acids in length. Zinc fingers are an example of small protein domains that can coordinate one or more zinc ions to help stabilize their folds.
Genes are expressed through the process of protein synthesis. This elaborate tutorial provides an in-depth review of the different steps of the biological production of protein starting from the gene up to the process of secretion. Also included are topics on DNA replication during interphase of the cell cycle, DNA mutation and repair mechanisms, gene pool, modification, and diseases...
Proteins have a crucial role in various biological activities. Get to know how proteins are able to perform as enzymes, cofactors, or regulators. In this tutorial, you will also know the common metabolic pathways of biomolecules, such as glucose and other carbohydrates, fats, proteins and amino acids, and essential nutrients...
The endoplasmic reticulum and Golgi apparatus are the organelles involved in the translation step of protein synthesis and the ensuing post-translational steps. Read this tutorial for more info...
Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcript that carries the code for protein synthesis. Read this tutorial for further details...
The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleotides in the expressed DNA strand. For more info on the different types of proteins, read this tutorial...
The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the different components and functions of the human circulatory system dealt with in detail in this tutorial. The lymphatic system is also elucidated elaborately here...