Structure
Calmodulin is a small, highly conserved protein approximately 148 amino acids long (16706 Daltons). It contains four EF-hand motifs, each of which binds a Ca2+ ion. The protein has two approximately symmetrical globular domains (the N- and C-domain), separated by a flexible linker region. Calcium participates in an intracellular signalling system by acting as a diffusible second messenger to the initial stimuli.
Read more about this topic: Calmodulin
Famous quotes containing the word structure:
“... the structure of a page of good prose is, analyzed logically, not something frozen but the vibrating of a bridge, which changes with every step one takes on it.”
—Robert Musil (1880–1942)
“Slumism is the pent-up anger of people living on the outside of affluence. Slumism is decay of structure and deterioration of the human spirit. Slumism is a virus which spreads through the body politic. As other “isms,” it breeds disorder and demagoguery and hate.”
—Hubert H. Humphrey (1911–1978)
“Each structure and institution here was so primitive that you could at once refer it to its source; but our buildings commonly suggest neither their origin nor their purpose.”
—Henry David Thoreau (1817–1862)