the rodlike spatial configuration of many protein molecules in which the polypeptide backbone is stabilized by hydrogen bonds between amino acids in successive helical turns.
(biochem) a helical conformation of a polypeptide chain, found abundantly in the structure of proteins
alpha helix n.
The helical form, turned in a right-handed direction, of many proteins.
A common structure of proteins, characterized by a single, spiral chain of amino acids stabilized by hydrogen bonds. Compare beta sheet, random coil.
- Alpha iron
the magnetic allotrope of iron, stable below 910°C and having a body-centered cubic space lattice. noun a magnetic allotrope of iron that is stable below 910°C; ferrite
- Alpha-ketoglutaric acid
a dibasic keto acid, C 5 H 6 O 5 , that occurs as an intermediate in the Krebs’ cycle and in protein metabolism.
- Alpha male
a male animal having the highest rank in a dominance hierarchy: Studies show that in spite of their high rank, access to females, etc., baboon alpha males experience a great deal of stress. the most dominant, powerful, or assertive man in a particular group: the alpha male of investment bankers. Contemporary Examples Yahoo is merely […]